Airtight room air sampling detection device

Abstract

The invention discloses a closed room air sampling detection device, and belongs to the technical field of air sampling detection equipment, the closed room air sampling detection device comprises a supporting mechanism, an air storage tank, a light transmittance detection mechanism, a humidity detection mechanism and a pH value detection mechanism, the supporting mechanism comprises an upper layer plate and a mounting assembly, the mounting assembly is mounted on the upper layer plate, and the air storage tank is connected with the mounting assembly; the light transmittance detection mechanism comprises a first sliding block, a light source, an illumination sensor and a lifting assembly; the lifting assembly is mounted on the upper-layer plate; the humidity detection mechanism comprises a motor, a transmission cylinder, a transmission assembly and a humidity detection assembly, the motor is connected with the lifting assembly and the transmission assembly, the transmission assembly is connected with the humidity detection assembly, the humidity detection assembly is connected with the transmission cylinder, and the transmission cylinder is communicated with the gas storage tank; and the pH value detection mechanism comprises a detection cylinder, a top shaft, an extraction assembly and a pH value detection assembly. According to the device, detected gas is sealed, so that the surrounding environment is prevented from being polluted due to gas leakage.

Description

Technical Field

[0001] The invention relates to the technical field of air sampling detection equipment, and in particular discloses an air sampling detection device for a closed room. Background Art

[0002] Indoor air quality has an important impact on human health and quality of life. In order to ensure the health and safety of the indoor environment, a closed room air sampling and detection device came into being. Traditional indoor air quality testing usually requires manual collection of samples and sending them back to the laboratory for analysis. This method has problems such as time delay, limited sampling locations and human interference. In order to solve these problems, a closed room air sampling and detection device was developed.

[0003] As people pay more attention to indoor environmental health and the air quality detection technology continues to improve, the air sampling and detection device for closed rooms will continue to be optimized and upgraded to meet the needs of indoor air quality monitoring of different types and scales. This will further promote the development of indoor environmental health management and improve people's quality of life and health level. At the same time, the research and development and application of this device also provide important technical support and innovation power for the field of domestic air quality monitoring.

[0004] The patent with publication number CN221612801U discloses an air sampling detection device. The technical solution of this patent is: it includes a base and a support frame, the top of the base is hinged with a support plate, and the outer walls of the support plate are hinged with each other, the top of the support plate is hinged with a mounting platform, and the inner walls of the mounting platform and the base are both provided with movable grooves, a lifting mechanism for adjusting the height of the mounting platform is arranged inside the base, a support frame is installed at the top of the mounting platform, and a fan is installed at the top of the support frame, an exhaust duct passing through the fan is installed at the output end of the fan, a detection sensor is arranged inside the support frame, an air suction duct passing through the support frame is installed at the input end of the fan, and a filter is arranged on the outer wall of the air suction duct, but this patent cannot realize the detection of light transmittance in the air, and therefore, an air sampling detection device for a closed room is invented to address this defect. Summary of the invention

[0005] In view of the above technical problems, the technical solution adopted by the present invention is: it includes an air storage tank, a supporting mechanism, a transmittance detection mechanism, a humidity detection mechanism and a pH detection mechanism, the supporting mechanism includes an upper plate and a mounting assembly, the mounting assembly is installed on the upper plate, the air storage tank is connected to the mounting assembly, the transmittance detection mechanism includes a first slider, a light source, a light sensor and a lifting assembly, the lifting assembly is installed on the upper plate, the lifting assembly is connected to the first slider, the first slider is slidably installed on the outer surface of the air storage tank, the light source is installed on the first slider, and the light sensor is fixedly installed on the first slider.

[0006] The humidity detection mechanism includes a motor, a transfer cylinder, a transmission assembly and a humidity detection assembly. The motor is connected to the lifting assembly, the motor is connected to the transmission assembly, the transmission assembly is connected to the humidity detection assembly, the humidity detection assembly is connected to the transfer cylinder, and the transfer cylinder is connected to the air storage tank.

[0007] The pH detection mechanism includes a detection cylinder, a top shaft, an extraction component and a pH detection component. A side block is fixedly installed on the side of the detection cylinder, the side block is fixedly installed on the side of the upper plate, the detection cylinder is connected to the pH detection component, the pH detection component is connected to the top shaft, the top shaft is connected to the extraction component, and the extraction component is connected to the lifting component.

[0008] Furthermore, the mounting assembly includes two support columns, which are symmetrically fixedly mounted on the lower side of the upper plate. A second mounting hole is provided on the upper plate, and the gas storage tank is fixedly mounted on the inner wall of the second mounting hole.

[0009] Furthermore, the lifting assembly includes a first vertical rod, a first vertical groove is arranged on the side of the first vertical rod, a second slider is slidably installed on the inner wall of the first vertical groove, the second slider is fixedly connected to the light source, a shading sleeve is fixedly installed on the outer surface of the first slider, the shading sleeve is fixedly connected to the light source, and the shading sleeve is made of shading material.

[0010] Furthermore, a second vertical rod is fixedly installed on the upper plate, a second installation groove is provided on the side of the second vertical rod, a first vertical axis is fixedly installed on the inner wall of the second installation groove, a driving block is slidably installed on the outer surface of the first vertical axis, a right-angle rod is fixedly installed on the side of the driving block, the right-angle rod is fixedly connected to the second slider, a handle is fixedly installed on the side of the right-angle rod, a first spring is wound around the outer surface of the first vertical axis, one end of the first spring is fixedly installed on the outer surface of the first vertical axis, and the other end of the first spring is fixedly installed on the lower side of the driving block.

[0011] Furthermore, the motor is fixedly mounted on the side of the first vertical rod, and the transmission assembly includes a turntable, which is fixedly mounted on the output end of the motor, a first connecting shaft is fixedly mounted on the side of the turntable, a driving groove is slidably mounted on the side of the turntable, a horizontal rod is provided on the side of the driving groove, the first connecting shaft is slidably mounted on the inner wall of the horizontal rod, a lifting rod is fixedly mounted on the lower side of the horizontal rod, the lifting rod is slidably connected to the upper plate, and the sliding direction is vertical, a driving rod is fixedly mounted on the side of the lifting rod, a connecting rod is fixedly mounted on the side of the driving rod, a second connecting shaft is fixedly mounted on the side of the connecting rod, and the second connecting shaft is slidably mounted on the side of the second vertical rod.

[0012] Furthermore, a second connecting shaft is fixedly installed on the side of the moving block, a first connecting rod is rotatably installed on the outer surface of the second connecting shaft, a first mounting groove is arranged on the upper plate, and the humidity detection assembly includes a third slider, the third slider is slidably installed on the inner wall of the first mounting groove, a lower block is fixedly installed on the lower side of the third slider, a third connecting shaft is fixedly installed on the side of the lower block, and the third connecting shaft is rotatably connected to the first connecting rod.

[0013] Furthermore, a first side shaft is fixedly installed on the side of the third slider, a second connecting rod is fixedly installed on the side of the first side shaft, a second side shaft is fixedly installed on the side of the second connecting rod, the second side shaft is coaxial with the transfer cylinder, the interior of the transfer cylinder is hollow, the transfer cylinder is connected to the interior of the air storage tank, a sleeve is fixedly installed on the inner wall of the transfer cylinder, the diameter of the inner wall of the sleeve is equal to the diameter of the second side shaft, an air intake pipe is fixedly installed on the outer surface of the transfer cylinder, the air intake pipe is located between the sleeve and the air storage tank, a lower tube is also fixedly installed on the outer surface of the transfer cylinder, the lower tube is located between the sleeve and the second connecting rod, a first mounting hole is also provided on the upper plate, a collecting tank is fixedly installed on the inner wall of the first mounting hole, the collecting tank is connected to the lower tube, and a humidity detector is fixedly installed on one end of the second side shaft facing the air storage tank.

[0014] Furthermore, a connecting pipe is installed at the lower part of the gas storage tank, the connecting pipe is connected with the detection cylinder, a second vertical shaft is fixedly installed at the lower side of the driving rod, a part of the second vertical shaft extends into the detection cylinder, a piston is fixedly installed at the end of the second vertical shaft extending into the detection cylinder, the piston is slidably installed on the inner wall of the detection cylinder, a transmission rod is fixedly installed on the outer surface of the second vertical shaft, a third vertical shaft is fixedly installed on the side of the transmission rod, a horizontal shaft is fixedly installed at the lower part of the third vertical shaft, and a top shaft is fixedly installed on the horizontal shaft. The upper part of the top shaft is hemispherical, and a plurality of grooves are arranged on the outer surface of the top shaft.

[0015] Furthermore, a sealing plate is fixedly installed at the lower part of the gas storage tank, and a circular through hole is arranged on the sealing plate. The circular through hole on the sealing plate is coaxial with the top shaft and has equal diameter. A plurality of fourth vertical shafts are slidably installed on the sealing plate, and a section of second spring is respectively wound on the outer surface of each fourth vertical shaft, and one end of each second spring is respectively fixedly installed on the outer surface of each fourth vertical shaft, and the other end of each second spring is respectively fixedly installed on the lower side of the sealing plate. The pH detection mechanism also includes a cover plate, which is coaxial with the top shaft, and the top shaft is fixedly installed on the upper ends of the four fourth vertical shafts. The cover plate is located inside the gas storage tank, and the lower end surface of the cover plate is tangent to the hemispherical part of the top shaft.

[0016] Compared with the prior art, the present invention has the following advantages: (1) the present invention seals the detected gas to avoid gas leakage and pollution of the surrounding environment; (2) the present invention detects the humidity and pH of the gas at the same time, thereby improving the detection efficiency; (3) the present invention detects multiple gas values, thereby improving the detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the supporting mechanism structure of the present invention.

[0019] Figure 3 for Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0020] Figure 4 It is a structural schematic diagram of the transmittance detection mechanism of the present invention.

[0021] Figure 5 for Figure 4 Schematic diagram of the local enlarged structure at point B in the middle.

[0022] Figure 6 for Figure 4 Schematic diagram of the partial enlarged structure at point C in the middle.

[0023] Figure 7 It is a schematic diagram of the position of the second mounting hole of the present invention.

[0024] Figure 8 It is a schematic diagram of the internal structure of the transfer tube of the present invention.

[0025] Fig. 9 It is a schematic diagram of the structure of the pH detection mechanism of the present invention.

[0026] Fig.10 for Fig. 9 Schematic diagram of the local enlarged structure at point D in the middle.

[0027] Fig.11 for Fig. 9 Schematic diagram of the local enlarged structure at point E in the middle.

[0028] Fig.12 It is a schematic diagram of the position relationship between the sealing plate and the cover plate of the present invention.

[0029] Figure numerals: 1-support mechanism; 2-gas storage tank; 3-transmittance detection mechanism; 4-humidity detection mechanism; 5-pH detection mechanism; 101-upper plate; 102-support column; 103-first mounting hole; 104-first mounting slot; 105-second mounting hole; 301-first slider; 302-light shielding sleeve; 303-light source; 304-first vertical rod; 305-second slider; 306-right angle rod; 307-second vertical rod; 308-handle; 309-driving block; 310-first vertical axis; 311-first spring; 312-second mounting slot; 313-light sensor; 314-first vertical slot; 401-motor; 402-turntable; 403-first connecting shaft; 404-horizontal rod; 40 5-driving groove; 406-lifting rod; 407-driving rod; 408-connecting rod; 409-moving block; 410-second connecting shaft; 411-first connecting rod; 412-third sliding block; 413-lower block; 414-third connecting shaft; 415-first side shaft; 416-second connecting rod; 417-second side shaft; 418-transfer cylinder; 419-intake pipe; 420-sleeve; 421-lower pipe; 422-collecting tank; 501-side block; 502-detection cylinder; 503-connecting pipe; 504-second vertical shaft; 505-transfer rod; 506-third vertical shaft; 507-horizontal shaft; 508-top shaft; 509-fourth vertical shaft; 510-second spring; 511-sealing plate; 512-cover plate. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further explained below in combination with and through specific implementation methods.

[0031] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0032] As attached Figure 1 ~Attached Fig.12As shown, the support mechanism 1 includes an upper plate 101 and a mounting assembly, the mounting assembly is mounted on the upper plate 101, the gas storage tank 2 is connected to the mounting assembly, the transmittance detection mechanism 3 includes a first slider 301, a light source 303, a light sensor 313 and a lifting assembly, the lifting assembly is mounted on the upper plate 101, the lifting assembly is connected to the first slider 301, the first slider 301 is slidably mounted on the outer surface of the gas storage tank 2, the light source 303 is mounted on the first slider 301, and the light sensor 313 is fixedly mounted on the first slider 301; the humidity detection mechanism 4 includes a motor 401, a transmission cylinder 418, a transmission assembly and a humidity detection The detection cylinder 502 is fixedly provided with a side block 501, and the side block 501 is fixedly installed on the side of the upper plate 101, the detection cylinder 502 is connected to the pH detection assembly, the pH detection assembly is connected to the top shaft 508, the top shaft 508 is connected to the extraction assembly, and the extraction assembly is connected to the lifting assembly.

[0033] As attached Figure 2 ~Attached Figure 5 As shown, the installation assembly includes two support columns 102, which are symmetrically fixedly installed on the lower side of the upper plate 101. A second installation hole 105 is provided on the upper plate 101, and the gas storage tank 2 is fixedly installed on the inner wall of the second installation hole 105.

[0034] As attached Figure 3 ~Attached Fig.11 As shown, the lifting assembly includes a first vertical rod 304, a first vertical groove 314 is arranged on the side of the first vertical rod 304, a second slider 305 is slidably mounted on the inner wall of the first vertical groove 314, the second slider 305 is fixedly connected to the light source 303, a light shielding sleeve 302 is fixedly mounted on the outer surface of the first slider 301, the light shielding sleeve 302 is fixedly connected to the light source 303, and the light shielding sleeve 302 is made of light shielding material; a second vertical rod 307 is also fixedly mounted on the upper plate 101, and a second mounting groove 312 is arranged on the side of the second vertical rod 307, A first vertical shaft 310 is fixedly installed on the inner wall of the second installation groove 312, a driving block 309 is slidably installed on the outer surface of the first vertical shaft 310, a right-angle rod 306 is fixedly installed on the side of the driving block 309, the right-angle rod 306 is fixedly connected to the second slider 305, a handle 308 is fixedly installed on the side of the right-angle rod 306, a first spring 311 is wound around the outer surface of the first vertical shaft 310, one end of the first spring 311 is fixedly installed on the outer surface of the first vertical shaft 310, and the other end of the first spring 311 is fixedly installed on the lower side of the driving block 309.

[0035] As attached Figure 4 ~Attached Fig.10 As shown, the motor 401 is fixedly mounted on the side of the first vertical rod 304, the transmission assembly includes a turntable 402, the turntable 402 is fixedly mounted on the output end of the motor 401, a first connecting shaft 403 is fixedly mounted on the side of the turntable 402, a driving groove 405 is slidably mounted on the side of the turntable 402, a horizontal rod 404 is arranged on the side of the driving groove 405, the first connecting shaft 403 is slidably mounted on the inner wall of the horizontal rod 404, a lifting rod 406 is fixedly mounted on the lower side of the horizontal rod 404, the lifting rod 406 is slidably connected to the upper plate 101, and the sliding direction is vertical, and the side of the lifting rod 406 is fixed A driving rod 407 is fixedly installed, a connecting rod 408 is fixedly installed on the side of the driving rod 407, a second connecting shaft 410 is fixedly installed on the side of the connecting rod 408, and the second connecting shaft 410 is slidably installed on the side of the second vertical rod 307; a second connecting shaft 410 is fixedly installed on the side of the moving block 409, and a first connecting rod 411 is rotatably installed on the outer surface of the second connecting shaft 410, a first mounting groove 104 is provided on the upper plate 101, and the humidity detection component includes a third slider 412, the third slider 412 is slidably installed on the inner wall of the first mounting groove 104, and the lower side of the third slider 412 is fixed A lower block 413 is installed, and a third connecting shaft 414 is fixedly installed on the side of the lower block 413, and the third connecting shaft 414 is rotatably connected to the first connecting rod 411; a first side shaft 415 is fixedly installed on the side of the third sliding block 412, and a second connecting rod 416 is fixedly installed on the side of the first side shaft 415, and a second side shaft 417 is fixedly installed on the side of the second connecting rod 416, and the second side shaft 417 is coaxial with the transmission cylinder 418, and the transmission cylinder 418 is hollow inside, and the transmission cylinder 418 is connected to the inside of the gas storage tank 2, and a sleeve 420 is fixedly installed on the inner wall of the transmission cylinder 418, and the sleeve 420 The inner wall diameter is equal to the diameter of the second side shaft 417, an air intake pipe 419 is fixedly installed on the outer surface of the transfer cylinder 418, and the air intake pipe 419 is located between the sleeve 420 and the gas storage tank 2. A lower tube 421 is also fixedly installed on the outer surface of the transfer cylinder 418, and the lower tube 421 is located between the sleeve 420 and the second connecting rod 416. A first mounting hole 103 is also provided on the upper plate 101, and a collecting tank 422 is fixedly installed on the inner wall of the first mounting hole 103, and the collecting tank 422 is connected to the lower tube 421. A humidity detector is fixedly installed on one end of the second side shaft 417 facing the gas storage tank 2.

[0036] As attached Figure 5 ~Attached Fig.12As shown, a connecting pipe 503 is installed at the lower part of the gas storage tank 2, and the gas storage tank 2 is made of glass. The connecting pipe 503 is connected to the detection cylinder 502, and a second vertical shaft 504 is fixedly installed on the lower side of the driving rod 407. A part of the second vertical shaft 504 extends into the detection cylinder 502, and a piston is fixedly installed at the end of the second vertical shaft 504 extending into the detection cylinder 502. The piston is slidably installed on the inner wall of the detection cylinder 502, and a transfer rod 505 is fixedly installed on the outer surface of the second vertical shaft 504. A third vertical shaft 506 is fixedly installed on the side of the transfer rod 505, and a horizontal shaft 507 is fixedly installed at the lower part of the third vertical shaft 506, and a top shaft 508 is fixedly installed on the horizontal shaft 507. The upper part of the top shaft 508 is hemispherical, and a plurality of grooves are arranged on the outer surface of the top shaft 508; a sealing plate 511 is fixedly installed at the lower part of the gas storage tank 2, and a circular through hole is arranged on the sealing plate 511. The circular through hole on the sealing plate 511 is coaxial with the top shaft 508 and has the same diameter, and a plurality of fourth vertical shafts 509 are slidably installed on the sealing plate 511, and a section of the second spring 510 is respectively wound on the outer surface of each fourth vertical shaft 509, and one end of each second spring 510 is respectively fixedly installed It is installed on the outer surface of each fourth vertical shaft 509, and the other end of each second spring 510 is fixedly installed on the lower side of the sealing plate 511. The pH detection mechanism 5 also includes a cover plate 512, which is coaxial with the top shaft 508. The top shaft 508 is fixedly installed on the upper ends of the four fourth vertical shafts 509. The cover plate 512 is located inside the gas storage tank 2, and the lower end surface of the cover plate 512 is tangent to the hemispherical part of the top shaft 508. The diameter of the cover plate 512 is larger than the diameter of the top shaft 508.

[0037] The working principle of the present invention is as follows.

[0038] (i) Before operation, the gas is sent into the transfer tube 418 through the air inlet pipe 419 by the exhaust fan, and then sent into the gas storage tank 2 through the transfer tube 418. After that, the exhaust fan stops working and the air inlet pipe 419 is closed, and then a moist pH test paper is placed in the groove of the top shaft 508.

[0039] (ii) Then, the handle 308 is moved to drive the right-angle rod 306 to move. The right-angle rod 306 drives the light source 303 to slide along the first vertical rod 304 through the second slider 305, and the gas in the gas storage tank 2 is irradiated by the light source 303, and the light sensor 313 detects the light transmitted therethrough, thereby detecting the light transmittance of the gas in the gas storage tank 2.

[0040] (III) The motor 401 is started, and the motor 401 drives the first connecting shaft 403 to move through the turntable 402. The first connecting shaft 403 drives the lifting rod 406 to move up and down through the horizontal rod 404. The lifting rod 406 drives the connecting rod 408 to move through the driving rod 407. The connecting rod 408 drives the second connecting shaft 410 to move through the moving block 409. The second connecting shaft 410 drives the third connecting shaft 414 to move through the first connecting rod 411. The third connecting shaft 414 drives the third sliding block 412 to slide along the first mounting groove 104 through the lower block 413, and then drives each second side shaft 417 to extend into the gas storage tank 2 through the first side shaft 415. The humidity of the gas in the gas storage tank 2 is detected by the humidity detector on the second side shaft 417, and the gas leaked due to poor air tightness is collected through the lower tube 421 and the collecting tank 422.

[0041] (iv) When the driving rod 407 moves, the piston in the detection cylinder 502 is driven to move through the second vertical shaft 504, and then a part of the gas in the gas storage tank 2 is drawn into the detection cylinder 502 through the connecting tube 503. The rise of the second vertical shaft 504 drives the third vertical shaft 506 to rise through the transfer rod 505. The third vertical shaft 506 drives the top shaft 508 to rise through the horizontal shaft 507, and then drives the top shaft 508 to lift the cover plate 512. At this time, the top shaft 508 extends into the gas storage tank 2, and the pH value of the gas in the gas storage tank 2 is detected by the moist pH in the groove of the top shaft 508.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention, and any reference numerals in the claims should not be considered as limiting the claims involved.

Claims

1. A closed room air sampling and detection device, comprising an air storage tank (2), characterized in that: The air sampling detection device for a closed room further comprises a support mechanism (1), a light transmittance detection mechanism (3), a humidity detection mechanism (4) and a pH detection mechanism (5); the support mechanism (1) comprises an upper plate (101) and a mounting assembly, the mounting assembly being mounted on the upper plate (101), the air storage tank (2) being connected to the mounting assembly, the light transmittance detection mechanism (3) comprising a first slider (301), a light source (303), a light sensor (313) and a lifting assembly, the lifting assembly being mounted on the upper plate (101), the lifting assembly being connected to the first slider (301), the first slider (301) being slidably mounted on the outer surface of the air storage tank (2), the light source (303) being mounted on the first slider (301), and the light sensor (313) being fixedly mounted on the first slider (301); The humidity detection mechanism (4) comprises a motor (401), a transmission cylinder (418), a transmission assembly and a humidity detection assembly, wherein the motor (401) is connected to the lifting assembly, the motor (401) is connected to the transmission assembly, the transmission assembly is connected to the humidity detection assembly, the humidity detection assembly is connected to the transmission cylinder (418), and the transmission cylinder (418) is connected to the air storage tank (2); The pH detection mechanism (5) comprises a detection cylinder (502), a top shaft (508), an extraction component and a pH detection component. A side block (501) is fixedly mounted on the side of the detection cylinder (502), the side block (501) is fixedly mounted on the side of the upper plate (101), the detection cylinder (502) is connected to the pH detection component, the pH detection component is connected to the top shaft (508), the top shaft (508) is connected to the extraction component, and the extraction component is connected to the lifting component.

2. The air sampling and detection device for a closed room according to claim 1, characterized in that: The mounting assembly comprises two support columns (102), the two support columns (102) being symmetrically fixedly mounted on the lower side of the upper plate (101), the upper plate (101) being provided with a second mounting hole (105), and the gas storage tank (2) being fixedly mounted on the inner wall of the second mounting hole (105).

3. The air sampling and detection device for a closed room according to claim 2, characterized in that: The lifting assembly comprises a first vertical rod (304), a first vertical groove (314) is arranged on the side of the first vertical rod (304), a second slider (305) is slidably mounted on the inner wall of the first vertical groove (314), the second slider (305) is fixedly connected to the light source (303), a light shielding sleeve (302) is fixedly mounted on the outer surface of the first slider (301), the light shielding sleeve (302) is fixedly connected to the light source (303), and the light shielding sleeve (302) is made of a light shielding material.

4. The air sampling and detection device for a closed room according to claim 3, characterized in that: A second vertical rod (307) is also fixedly mounted on the upper plate (101); a second mounting groove (312) is provided on the side of the second vertical rod (307); a first vertical shaft (310) is fixedly mounted on the inner wall of the second mounting groove (312); a driving block (309) is slidably mounted on the outer surface of the first vertical shaft (310); a right-angle rod (306) is fixedly mounted on the side of the driving block (309); the right-angle rod (306) is fixedly connected to the second sliding block (305); a handle (308) is fixedly mounted on the side of the right-angle rod (306); a first spring (311) is wound around the outer surface of the first vertical shaft (310); one end of the first spring (311) is fixedly mounted on the outer surface of the first vertical shaft (310); and the other end of the first spring (311) is fixedly mounted on the lower side of the driving block (309).

5. The air sampling and detection device for a closed room according to claim 3, characterized in that: The motor (401) is fixedly mounted on the side of the first vertical rod (304), and the transmission assembly comprises a rotating disk (402), the rotating disk (402) is fixedly mounted on the output end of the motor (401), a first connecting shaft (403) is fixedly mounted on the side of the rotating disk (402), a driving groove (405) is slidably mounted on the side of the rotating disk (402), a horizontal rod (404) is arranged on the side of the driving groove (405), and the first connecting shaft (403) is slidably mounted on the inner wall of the horizontal rod (404). A lifting rod (406) is fixedly installed on the lower side of the horizontal rod (404), the lifting rod (406) is slidably connected to the upper plate (101) and the sliding direction is the vertical direction, a driving rod (407) is fixedly installed on the side of the lifting rod (406), a connecting rod (408) is fixedly installed on the side of the driving rod (407), a second connecting shaft (410) is fixedly installed on the side of the connecting rod (408), and the second connecting shaft (410) is slidably installed on the side of the second vertical rod (307).

6. The air sampling and detection device for a closed room according to claim 5, characterized in that: A second connecting shaft (410) is fixedly mounted on the side of the moving block (409), a first connecting rod (411) is rotatably mounted on the outer surface of the second connecting shaft (410), a first mounting groove (104) is provided on the upper plate (101), and the humidity detection component comprises a third slider (412), the third slider (412) is slidably mounted on the inner wall of the first mounting groove (104), a lower block (413) is fixedly mounted on the lower side of the third slider (412), a third connecting shaft (414) is fixedly mounted on the side of the lower block (413), and the third connecting shaft (414) is rotatably connected to the first connecting rod (411).

7. The air sampling and detection device for a closed room according to claim 6, characterized in that: A first side shaft (415) is fixedly mounted on the side of the third slider (412), a second connecting rod (416) is fixedly mounted on the side of the first side shaft (415), a second side shaft (417) is fixedly mounted on the side of the second connecting rod (416), the second side shaft (417) is coaxial with the transmission tube (418), the transmission tube (418) is hollow inside, the transmission tube (418) is connected to the inside of the gas storage tank (2), a sleeve (420) is fixedly mounted on the inner wall of the transmission tube (418), the inner wall diameter of the sleeve (420) is equal to the diameter of the second side shaft (417), and the outer surface of the transmission tube (418) is An air intake pipe (419) is fixedly installed, and the air intake pipe (419) is located between the sleeve (420) and the air storage tank (2). A lower pipe (421) is also fixedly installed on the outer surface of the transfer cylinder (418), and the lower pipe (421) is located between the sleeve (420) and the second connecting rod (416). A first mounting hole (103) is also provided on the upper plate (101), and a collecting tank (422) is fixedly installed on the inner wall of the first mounting hole (103), and the collecting tank (422) is connected to the lower pipe (421). A humidity detector is fixedly installed on one end of the second side shaft (417) facing the air storage tank (2).

8. The air sampling and detection device for a closed room according to claim 5, characterized in that: A connecting pipe (503) is installed at the lower part of the gas storage tank (2), and the connecting pipe (503) is connected to the detection cylinder (502). A second vertical shaft (504) is fixedly installed at the lower side of the driving rod (407). A portion of the second vertical shaft (504) extends into the detection cylinder (502), and a piston is fixedly installed at the end of the second vertical shaft (504) extending into the detection cylinder (502). The piston is slidably installed on the inner wall of the detection cylinder (502). A transmission rod (505) is fixedly installed on the outer surface of the second vertical shaft (504), and a third vertical shaft (506) is fixedly installed on the side of the transmission rod (505). A horizontal shaft (507) is fixedly installed at the lower part of the third vertical shaft (506), and a top shaft (508) is fixedly installed on the horizontal shaft (507). The upper part of the top shaft (508) is hemispherical, and a plurality of grooves are arranged on the outer surface of the top shaft (508).

9. The air sampling and detection device for a closed room according to claim 8, characterized in that: A sealing plate (511) is fixedly installed at the lower part of the gas storage tank (2), and a circular through hole is arranged on the sealing plate (511). The circular through hole on the sealing plate (511) is coaxial with the top shaft (508) and has the same diameter. A plurality of fourth vertical shafts (509) are slidably installed on the sealing plate (511), and a second spring (510) is respectively wound around the outer surface of each fourth vertical shaft (509), and one end of each second spring (510) is respectively fixedly installed on each fourth vertical shaft. (509), the other end of each second spring (510) is fixedly mounted on the lower side of the sealing plate (511), the pH detection mechanism (5) further comprises a cover plate (512), the cover plate (512) is coaxial with the top shaft (508), the top shaft (508) is fixedly mounted on the upper ends of four fourth vertical shafts (509), the cover plate (512) is located inside the gas storage tank (2), and the lower end surface of the cover plate (512) is tangent to the hemispherical portion of the top shaft (508).

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