Device for detecting sulfur dioxide in air

Abstract

The invention relates to the technical field of gas detection, in particular to a detection device for sulfur dioxide in air, which comprises a detection machine body, an active suction mechanism, a warning replacement mechanism and a suspension fixing mechanism, the active suction mechanism is arranged on the detection machine body, the warning replacement mechanism is arranged between a feeding shell and an air suction assembly, and the suspension fixing mechanism is arranged on the detection machine body. The suspension fixing mechanism is arranged between the threaded sleeve and the air suction assembly. According to the sulfur dioxide detection device, the suction fan is controlled to operate, so that the suction fan can generate suction force, the suction force can suck air through the suction nozzle, the air can flow into the inner side of the detection machine body through the suction nozzle, the filter screen, the connecting sleeve, the filter cotton piece and the threaded sleeve, and the detection machine body can detect sulfur dioxide in the air; and air can be quickly sucked by setting active suction, so that the detection efficiency of the detection machine body can be improved.

Description

Technical Field

[0001] This invention relates to the field of gas detection technology, specifically to a device for detecting sulfur dioxide in the air. Background Technology

[0002] A sulfur dioxide detection device in the air is an instrument specifically designed to measure and monitor the concentration of sulfur dioxide gas in ambient air or industrial waste gas.

[0003] Chinese patent CN222318909U discloses a gas detection device for environmental monitoring, including a handheld gas detection device. A gas detection head and an operation button are mounted on the outer side of the handheld gas detection device. The patent incorporates a stabilization protection device to ensure the stability of the transparent protective cover's shielding structure on the outer display screen of the handheld gas detection device, preventing scratches and wear on the display screen, extending the device's lifespan, and facilitating gas detection. The patent also includes a positioning device where a reset spring inside the housing provides elastic force to push a metal moving pad, and a positioning rod is movably inserted into the corresponding sliding block to lock it in place. This simplifies locking the metal moving pad after movement and ensures the sliding plate remains stable and does not loosen after movement.

[0004] However, the above-mentioned patents have the following shortcomings: the detection process relies on natural airflow or passive inhalation, resulting in low sampling efficiency and difficulty in achieving rapid and continuous detection. Furthermore, the filter structure is prone to clogging due to dust and particulate matter, requiring frequent manual cleaning or replacement, which affects the continuity and accuracy of the detection. At the same time, there is a lack of automatic warning and replacement mechanism for filter material clogging. The equipment installation and fixing methods are relatively simple and difficult to adapt to the usage needs of different scenarios, especially in terms of installation and adjustment in high-altitude, pipeline, or complex environments.

[0005] Therefore, the present invention provides a device for detecting sulfur dioxide in the air. Summary of the Invention

[0006] The purpose of this invention is to provide a device for detecting sulfur dioxide in the air, so as to solve the problems mentioned in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a detection device for sulfur dioxide in the air, including a detection body, an active intake mechanism, a warning replacement mechanism and a suspension and fixing mechanism; An active suction mechanism is disposed on the detection machine body. The active suction mechanism includes a threaded sleeve threadedly mounted on the detection machine body, a feeding shell fixedly mounted on the threaded sleeve, a connecting sleeve fixedly mounted on the feeding shell, a suction component disposed on the connecting sleeve, and a self-cleaning component disposed on the suction component. The warning replacement mechanism is located between the feeding shell and the suction assembly. The warning replacement mechanism includes an abutting component on the feeding shell, a positioning component on the feeding shell, two mounting shells slidably installed on the inner side of the feeding shell, each mounting shell having a symmetrical slot, and a filter cotton sheet placed on the inner side of each mounting shell. The suction assembly has an air collection component, and a pushing component is provided between the connecting sleeve and the air collection component. A suspension fixing mechanism is disposed between the threaded sleeve and the suction assembly. The suspension fixing mechanism includes a protective component disposed between the threaded sleeve and the suction assembly, and the protective component is provided with a rotation adjustment component.

[0008] Furthermore, the suction assembly includes a dust collection shell fixedly installed on the connecting sleeve, a suction nozzle fixedly installed on the dust collection shell, a filter screen fixedly installed on the inner wall of the connecting sleeve, and a suction fan provided on the inner wall of the connecting sleeve.

[0009] Furthermore, the self-cleaning component includes a rotating rod fixedly installed on the fan blades of the suction fan. The rotating rod is rotatably connected to the filter screen. A mounting screw is threaded onto the rotating rod. A scraper that fits against the filter screen is clamped and fixed between the mounting screw and the rotating rod.

[0010] Furthermore, the abutting assembly includes a first spring connected to the upper material shell, the end of the first spring being connected to a support frame slidably connected to the upper material shell, an abutting ring being fixedly installed on the support frame, the abutting ring being located inside the upper material shell and abutting against one of the mounting shells.

[0011] Furthermore, the positioning component includes two symmetrically fixed side sleeves mounted on the loading shell, and a second spring is connected to the inner wall of each side sleeve. The end of the second spring is connected to a first locking block that is adapted to the locking slot.

[0012] Furthermore, the air collection assembly includes a delivery pipe fixedly installed on the nozzle, an air inlet check valve fixedly installed on the delivery pipe, an air collection shell fixedly installed on the air inlet check valve, a first piston rod slidably installed on the inner side of the air collection shell, a first threaded block fixedly installed at the end of the first piston rod, a reciprocating bolt threaded on the inner side of the first threaded block, a limiting shell slidably connected to the first threaded block fixedly installed on the nozzle, a transmission rod fixedly installed on the reciprocating bolt, the transmission rod being fixed to the nozzle via a bearing, a first conical tooth fixedly installed at the end of the transmission rod, and two brackets symmetrically fixedly installed on the rotating rod, with a second conical tooth meshing with the first conical tooth fixedly installed on both brackets.

[0013] Furthermore, the actuating assembly includes a safety valve fixedly mounted on the air collecting shell, a connecting hose connected to the safety valve, a threaded interface fixedly mounted on the connecting hose, two support sleeves symmetrically fixedly mounted on the connecting sleeve, a third spring connected to the inner wall of each support sleeve, and a telescopic frame slidably connected to the support sleeve at the ends of the two third springs. A push plate and a pushing frame are fixedly mounted on the telescopic frame, and a first piston cylinder fixed to the air collecting shell is slidably mounted on the pushing frame. A rotating shell threadedly connected to the threaded interface is rotatably mounted on the first piston cylinder.

[0014] Furthermore, an air outlet is provided on the air collecting shell, a second piston cylinder is fixedly installed on the suction nozzle, the suction nozzle and the second piston cylinder are connected, a second piston rod is slidably installed on the inner side of the second piston cylinder, a fourth spring connected to the inner wall of the second piston cylinder is connected to the second piston rod, and a marking and sealing shell that is slidably connected to the air collecting shell is fixedly installed at the end of the second piston rod.

[0015] Furthermore, the protective assembly includes a fixed housing fixedly installed between the threaded sleeve and the suction nozzle, a protective cover slidably installed on the fixed housing, two side blocks symmetrically fixedly installed on the protective cover, a fifth spring connected to each side block, a locking plate slidably connected to the end of the fifth spring, two locking shells that engage with the locking plate symmetrically fixedly installed on the fixed housing, and a vent opening on the protective cover.

[0016] Furthermore, the rotation adjustment assembly includes two symmetrically fixed positioning blocks mounted on the protective cover. Each positioning block is connected to two sixth springs. The end of each sixth spring is connected to a second locking block that is slidably connected to the positioning block. A rotating frame is rotatably mounted on the positioning block. The inner wall of the rotating frame has multiple locking holes that engage with the second locking blocks. A hook plate is fixedly mounted between the two rotating frames. A second threaded block is fixedly mounted on the hook plate. A fastening bolt is threaded onto the second threaded block. A clamping plate that is slidably connected to the hook plate is rotatably mounted on the fastening bolt.

[0017] The beneficial effects of this invention are: In this invention, by controlling the operation of the suction fan, the suction fan generates suction force, which draws air through the nozzle. The air then flows into the inner side of the detection unit through the nozzle, filter screen, connecting sleeve, filter cotton sheet, and threaded sleeve, enabling the detection unit to detect sulfur dioxide in the air. The active suction system allows for rapid air intake, thereby improving the detection efficiency of the unit. During the active air intake process, the filter screen intercepts larger particulate impurities in the air, performing preliminary filtration and preventing larger particulate impurities from entering the internal structure of the detection unit and causing damage.

[0018] (2) In this invention, by controlling the operation of the suction fan, the fan blades of the suction fan can drive the rotating rod to rotate, and the rotating rod can drive the scraper to rotate through the mounting screw, so that the scraper can perform self-cleaning work on the filter screen. The cleaned particles and impurities are retained in the dust collection shell under the guidance of suction. When the detection work is completed, the suction fan is controlled to stop running, and the detection body is inverted so that the particles and impurities in the dust collection shell are removed through the suction nozzle under the action of gravity, which is convenient for cleaning.

[0019] (3) In this invention, when the filter cotton sheet intercepts enough dust, the air drawn in is difficult to pass through the filter cotton sheet and enter the interior of the detection machine. At this time, part of the air drawn in flows into the inner side of the air collecting shell through the delivery pipe and the air inlet one-way valve. At the same time, part of the air drawn in enters the inner side of the second piston cylinder. Under the action of air pressure, the air inside the second piston cylinder can push the second piston rod to move along the inner side of the second piston cylinder, so that the second piston rod can drive the marking sealing shell to move to the air outlet, so that the marking sealing shell can seal the air outlet and prevent the air inside the air collecting shell from leaking out. The rotating rod drives the second conical tooth to rotate through the bracket, so that the second conical tooth can drive the transmission rod to rotate through meshing with the first conical tooth, so that the transmission rod can drive the reciprocating bolt to rotate, so that the reciprocating bolt can utilize the thread action with the first threaded block. The first piston rod can be moved along the inner side of the air collecting shell, which can compress the air in the air collecting shell and increase the air pressure in the air collecting shell. When the air pressure in the air collecting shell is higher than the air pressure threshold set by the safety valve, the safety valve opens, allowing the high-pressure air in the air collecting shell to quickly enter the inner side of the first piston cylinder through the connecting hose, threaded interface and rotating shell. The high-pressure air can compress the push frame to move along the inner side of the first piston cylinder, which can drive the push plate to move through the telescopic frame. The push plate can push the two mounting shells inside the feeding shell, allowing the blocked filter cotton sheet to be moved away from the suction channel. The second spring can support the first locking block, which can use the locking block to position the mounting shell by engaging with the locking groove, so that the new filter cotton sheet can be fixed on the suction channel, thereby facilitating the filtration work of the filter cotton sheet.

[0020] (4) In this invention, by setting a fixed shell and a protective cover, all the internal components can be protected. The marking of the closed shell at the air outlet can be observed through the vent, so that the filter cotton sheet that has been automatically replaced can be known. The sixth spring can support the second locking block. By tightening the fastening bolt, the fastening bolt can drive the clamping plate to move under the action of the thread of the second threaded block, so that the clamping plate opens along the hook plate and moves the hook plate and clamping plate to the position where they can be clamped and fixed. Tightening the fastening bolt in the opposite direction, the hook plate and clamping plate can cooperate with each other to clamp the position where they can be clamped and fixed, so that the detection machine body can be fixed. By moving the detection machine body, the detection machine body can drive the protective cover to rotate around the positioning block through the threaded sleeve, the suction nozzle, and the fixed shell. The second locking block is used to lock and position the rotating frame, so that the detection machine body can be adjusted to a suitable tilt angle for fixing, thus facilitating operation. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic cross-sectional view of the protective cover of the present invention; Figure 3 This is a schematic cross-sectional view of the card plate structure of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the air collecting shell of the present invention; Figure 5 This is a schematic cross-sectional view of the suction nozzle of the present invention; Figure 6 This is a schematic cross-sectional view of the feeding shell structure of the present invention; Figure 7 This is a three-dimensional structural diagram of the support frame of the present invention; Figure 8 This is a schematic cross-sectional view of the connecting sleeve of the present invention; Figure 9 This is a schematic diagram of the telescopic frame structure of the present invention; Figure 10 This is a schematic diagram of the three-dimensional structure of the filter screen of the present invention; Figure 11 This is a schematic cross-sectional view of the second piston cylinder of the present invention; Figure 12 This is a cross-sectional view of the positioning block of the present invention.

[0023] In the diagram: 1. Detector body; 2. Threaded sleeve; 3. Feeding shell; 4. Connecting sleeve; 5. Dust collection shell; 6. Suction nozzle; 7. Filter screen; 8. Fan; 9. Rotating rod; 10. Mounting screw; 11. Scraper; 12. First spring; 13. Support frame; 14. Abutment ring; 15. Side sleeve; 16. Second spring; 17. First locking block; 18. Locking groove; 19. Mounting shell; 20. Filter cotton sheet; 21. Conveying pipe; 22. Inlet one-way valve; 23. Air collection shell; 24. First piston rod; 25. First threaded block; 26. Reciprocating bolt; 261. Limiting shell; 27. Transmission rod; 28. First conical tooth; 29. ​​Bracket; 30. Second conical tooth 31. Gear; 32. Safety valve; 33. Connecting hose; 34. Threaded interface; 35. Support sleeve; 36. Third spring; 37. Telescopic frame; 38. Push plate; 39. Push frame; 40. First piston cylinder; 41. Rotating shell; 42. Air outlet; 43. Second piston cylinder; 44. Second piston rod; 45. Fourth spring; 46. Marking and sealing shell; 47. Fixed shell; 48. Protective cover; 49. Side block; 50. Fifth spring; 51. Clamping plate; 52. Clamping case; 53. Vent; 54. Positioning block; 55. Sixth spring; 56. Second clamping block; 57. Rotating frame; 58. Hook plate; 59. Second threaded block; 50. Fastening bolt; 51. Clamping plate. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0025] like Figures 1-12 As shown, the present invention discloses a detection device for sulfur dioxide in the air, comprising a detection body 1, an active suction mechanism, a warning replacement mechanism, and a suspension fixing mechanism. The active suction mechanism is disposed on the detection body 1 and includes a threaded sleeve 2 threadedly mounted on the detection body 1. A feeding shell 3 is fixedly mounted on the threaded sleeve 2, and a connecting sleeve 4 is fixedly mounted on the feeding shell 3. A suction assembly is disposed on the connecting sleeve 4, and a self-cleaning component is disposed on the suction assembly. The suction assembly includes a dust collection shell 5 fixedly mounted on the connecting sleeve 4, a suction nozzle 6 fixedly mounted on the dust collection shell 5, a filter screen 7 fixedly mounted on the inner wall of the connecting sleeve 4, and a suction fan 8 fixedly mounted on the inner wall of the connecting sleeve 4.

[0026] Specifically, by controlling the operation of the suction fan 8, the suction fan 8 generates suction, which draws air through the suction nozzle 6. The air then flows into the inside of the detection unit 1 through the suction nozzle 6, filter screen 7, connecting sleeve 4, filter cotton sheet 20, and threaded sleeve 2, enabling the detection unit 1 to detect sulfur dioxide in the air. The active suction system allows for rapid air intake, thereby improving the detection efficiency of the detection unit 1. During the active air intake process, the filter screen 7 intercepts larger particulate impurities in the air, performing preliminary filtration and preventing larger particulate impurities from entering the interior of the detection unit 1 and causing damage.

[0027] In this embodiment, the self-cleaning component includes a rotating rod 9 fixedly installed on the fan blades of the suction fan 8. The rotating rod 9 is rotatably connected to the filter screen 7. A mounting screw 10 is threaded onto the rotating rod 9. A scraper 11 that is in contact with the filter screen 7 is clamped and fixed between the mounting screw 10 and the rotating rod 9.

[0028] Specifically, by controlling the operation of the suction fan 8, the fan blades of the suction fan 8 can drive the rotating rod 9 to rotate, and the rotating rod 9 can drive the scraper 11 to rotate through the mounting screw 10. The scraper 11 can perform self-cleaning work on the filter screen 7, and the cleaned particles and debris are retained in the dust collection shell 5 under the guidance of suction. When the detection work is completed, the suction fan 8 is controlled to stop operating, and the detection body 1 is inverted, so that the particles and impurities in the dust collection shell 5 are removed through the suction nozzle 6 under the action of gravity, which is convenient for cleaning.

[0029] In this embodiment, the warning replacement mechanism is located between the feeding shell 3 and the suction assembly. The warning replacement mechanism includes an abutment component on the feeding shell 3. The feeding shell 3 is provided with a positioning component. Two mounting shells 19 are slidably installed on the inner side of the feeding shell 3. Each mounting shell 19 has a symmetrically provided slot 18. Filter cotton sheets 20 are placed on the inner side of each mounting shell 19. An air collection component is provided on the suction assembly. A pushing component is provided between the connecting sleeve 4 and the air collection component. The abutment component includes a first spring 12 connected to the feeding shell 3. The end of the first spring 12 is connected to a support frame 13 that is slidably connected to the feeding shell 3. An abutment ring 14 is fixedly installed on the support frame 13. The abutment ring 14 is located inside the feeding shell 3. The positioning assembly includes two symmetrically fixedly mounted side sleeves 15 on the feeding shell 3. Each side sleeve 15 has a second spring 16 connected to its inner wall. The end of the second spring 16 is connected to a first locking block 17 adapted to the locking groove 18. The air collection assembly includes a conveying pipe 21 fixedly mounted on the suction nozzle 6. An air inlet check valve 22 is fixedly mounted on the conveying pipe 21. An air collecting shell 23 is fixedly mounted on the air inlet check valve 22. A first piston rod 24 is slidably mounted on the inner side of the air collecting shell 23. A first threaded block 25 is fixedly mounted at the end of the first piston rod 24. A reciprocating bolt 26 is threaded on the inner side of the first threaded block 25. A reciprocating bolt 26 is fixedly mounted on the suction nozzle 6 and slides against the first threaded block 25. The limit shell 261 of the moving connection has a transmission rod 27 fixedly installed on the reciprocating bolt 26. The transmission rod 27 is fixed to the suction nozzle 6 through a bearing. The end of the transmission rod 27 is fixedly installed with a first conical tooth 28. Two brackets 29 are symmetrically fixedly installed on the rotating rod 9. The two brackets 29 are fixedly installed with a second conical tooth 30 that meshes with the first conical tooth 28. The pushing assembly includes a safety valve 31 fixedly installed on the air collecting shell 23. A connecting hose 32 is connected to the safety valve 31. A threaded interface 33 is fixedly installed on the connecting hose 32. Two support sleeves 34 are symmetrically fixedly installed on the connecting sleeve 4. A third spring 35 is connected to the inner wall of each support sleeve 34. The ends of the two third springs 35 are connected to the connecting sleeve 4. A telescopic frame 36 is slidably connected to the support sleeve 34. A push plate 37 and a push frame 38 are fixedly installed on the telescopic frame 36. A first piston cylinder 39, which is fixed to the air collecting shell 23, is slidably installed on the push frame 38. A rotating shell 40, which is threadedly connected to the threaded interface 33, is rotatably installed on the first piston cylinder 39. An air outlet 41 is opened on the air collecting shell 23. A second piston cylinder 42 is fixedly installed on the suction nozzle 6. The suction nozzle 6 and the second piston cylinder 42 are connected. A second piston rod 43 is slidably installed on the inner side of the second piston cylinder 42. A fourth spring 431, which is connected to the inner wall of the second piston cylinder 42, is connected to the second piston rod 43. A marking and sealing shell 44, which is slidably connected to the air collecting shell 23, is fixedly installed at the end of the second piston rod 43.

[0030] Specifically, when the filter cotton sheet 20 intercepts enough dust, the intake air has difficulty passing through the filter cotton sheet 20 to enter the interior of the detection body 1. At this time, part of the intake air flows into the inner side of the air collecting shell 23 through the delivery pipe 21 and the air inlet one-way valve 22. At the same time, part of the intake air enters the inner side of the second piston cylinder 42. Under the action of air pressure, the air inside the second piston cylinder 42 can push the second piston rod 43 to move along the inner side of the second piston cylinder 42, so that the second piston rod 43 can drive the marking sealing shell 44 to move to the air outlet 41, so that the marking sealing shell 44 can seal the air outlet 41, so that the air inside the air collecting shell 23 no longer leaks. The rotating rod 9 drives the second conical tooth 30 to rotate through the bracket 29, so that the second conical tooth 30 can drive the transmission rod 27 to rotate by meshing with the first conical tooth 28, so that the transmission rod 27 can drive the reciprocating bolt 26 to rotate, so that the reciprocating bolt 26 can drive the first threaded block 25 by the thread action of the thread. The piston rod 24 moves along the inner side of the air collecting shell 23, allowing the first piston rod 24 to compress the air inside the air collecting shell 23, increasing the air pressure inside the air collecting shell 23. When the air pressure inside the air collecting shell 23 exceeds the air pressure threshold set by the safety valve 31, the safety valve 31 opens, allowing the high-pressure air inside the air collecting shell 23 to quickly enter the inner side of the first piston cylinder 39 through the connecting hose 32, threaded interface 33, and rotating shell 40, so that the high-pressure air can compress the pusher 38 along the first piston cylinder 39. The inner side moves, so that the pusher 38 can drive the pusher plate 37 to move through the telescopic frame 36, so that the pusher plate 37 can push the two mounting shells 19 inside the feeding shell 3, so that the blocked filter cotton sheet 20 can be moved away from the suction channel. The second spring 16 can support the first locking block 17, so that the first locking block 17 can be positioned by engaging with the locking groove 18, so that the new filter cotton sheet 20 can be fixed on the suction channel, thereby facilitating the filtration work of the filter cotton sheet 20. After replacement, the intake air can enter the testing body 1 through the filter cotton sheet 20. At this time, the air pressure is insufficient to push the second piston rod 43 to move, so the fourth spring 431 can use its own elasticity to drive the second piston rod 43 to reset along the inner side of the second piston cylinder 42. This causes the second piston rod 43 to move the marking sealing shell 44 away from the air outlet 41, allowing the air generated in the air collecting shell 23 to flow out through the air outlet 41. This prevents the air from pushing the push frame 38, allowing the third spring 35 to use its own elasticity to drive the extension... The retractable frame 36 is reset, allowing the telescopic frame 36 to drive the push plate 37 to reset, so that the first spring 12 uses its own elastic force to drive the abutment ring 14 to move through the support frame 13. After the inspection is completed, the mounting shell 19 containing the clogged filter cotton 20 is moved out of the inner side of the feeding shell 3. By opening the protective cover 46 and pulling the support frame 13, the mounting shell 19 containing the new filter cotton 20 is moved into the inner side of the feeding shell 3. The support frame 13 is released, so that the abutment ring 14 abuts against the mounting shell 19 under the support of the first spring 12.

[0031] In this embodiment, the suspension fixing mechanism is disposed between the threaded sleeve 2 and the suction assembly. The suspension fixing mechanism includes a protective component disposed between the threaded sleeve 2 and the suction assembly. The protective component is provided with a rotation adjustment component. The protective component includes a fixed shell 45 fixedly installed between the threaded sleeve 2 and the suction nozzle 6. A protective cover 46 is slidably installed on the fixed shell 45. Two side blocks 47 are symmetrically fixedly installed on the protective cover 46. A fifth spring 48 is connected to each side block 47. The end of the fifth spring 48 is connected to a locking plate 49 that is slidably connected to the side block 47. Two locking shells 50 that are locked to the locking plate 49 are symmetrically fixedly installed on the fixed shell 45. A vent 51 is provided on the protective cover 46.

[0032] Specifically, by pressing the card plate 49, the card plate 49 is moved by squeezing the fifth spring 48, so that the card plate 49 is no longer locked to the card case 50. By moving the protective cover 46, the protective cover 46 moves the card plate 49 away from the inside of the card case 50 through the side block 47, so as to facilitate the disassembly of the protective cover 46 and thus facilitate the replenishment of the filter cotton sheet 20.

[0033] In this embodiment, the rotation adjustment assembly includes two positioning blocks 52 symmetrically fixedly mounted on the protective cover 46. Each positioning block 52 is connected to two sixth springs 53. The end of the sixth spring 53 is connected to a second locking block 54 that is slidably connected to the positioning block 52. A rotating frame 55 is rotatably mounted on the positioning block 52. The inner wall of the rotating frame 55 has multiple locking holes that engage with the second locking blocks 54. A hook plate 56 is fixedly mounted between the two rotating frames 55. A second threaded block 57 is fixedly mounted on the hook plate 56. A fastening bolt 58 is threaded onto the second threaded block 57. A clamping plate 59 that is slidably connected to the hook plate 56 is rotatably mounted on the fastening bolt 58.

[0034] Specifically, by setting the fixed shell 45 and the protective cover 46, all internal components can be protected. The marked closed shell 44 can be observed at the air outlet 41 through the vent 51, thus indicating that the automatically replaced filter cotton sheet 20 has been identified. The sixth spring 53 supports the second locking block 54. By tightening the fastening bolt 58, the fastening bolt 58, under the action of the threads of the second threaded block 57, can drive the clamping plate 59 to move, causing the clamping plate 59 to open along the hook plate 56, moving the hook plate 56 and clamping plate 59 to a position where... The clamping and fixing position is fixed by turning the fastening bolt 58 in the opposite direction, so that the hook plate 56 and the clamping plate 59 can cooperate to clamp the fixed position, thus fixing the detection machine body 1. By moving the detection machine body 1, the detection machine body 1 can drive the protective cover 46 to rotate around the positioning block 52 through the threaded sleeve 2, the suction nozzle 6, and the fixing shell 45. The second locking block 54 is used to lock and position the rotating frame 55, so that the detection machine body 1 can be adjusted to a suitable tilt angle for fixing, thus facilitating operation.

[0035] Working principle: By tightening the fastening bolt 58, the operator moves the clamping plate 59 under the action of the threaded second threaded block 57. This causes the clamping plate 59 to open along the hook plate 56, moving the hook plate 56 and clamping plate 59 to a clamping and fixing position. Tightening the fastening bolt 58 in the opposite direction allows the hook plate 56 and clamping plate 59 to cooperate and clamp the machine body 1, thus fixing it in place. By moving the machine body 1, the protective cover 46 rotates around the positioning block 52 via the threaded sleeve 2, suction nozzle 6, and fixing shell 45. The second locking block 54 engages with the rotating frame 55 for positioning, adjusting the machine body 1 to a suitable tilt angle for fixing. By controlling the operation of the suction fan 8, the suction fan 8 generates suction, which draws air through the suction nozzle 6, allowing the air to be... Sulfur dioxide in the air flows into the inner side of the detection unit 1 through the suction nozzle 6, filter screen 7, connecting sleeve 4, filter cotton sheet 20, and threaded sleeve 2, enabling the detection unit 1 to detect sulfur dioxide in the air. The active suction system quickly draws in air. During this active suction process, the filter screen 7 intercepts larger particles, performing preliminary filtration. The suction fan 8 is controlled to operate, causing its blades to drive the rotating rod 9, which in turn drives the scraper 11 via the mounting screw 10. This scraper 11 performs self-cleaning of the filter screen 7, and the cleaned particles are retained in the dust collection shell 5 under the guidance of suction. After the detection is completed, the suction fan 8 is stopped, and the detection unit 1 is inverted, allowing the particles in the dust collection shell 5 to be removed through the suction nozzle 6 by gravity. When the filter cotton sheet 20 intercepts enough dust, the intake air has difficulty passing through the filter cotton sheet 20 to enter the interior of the detection body 1. At this time, part of the intake air flows into the inner side of the air collecting shell 23 through the delivery pipe 21 and the air intake one-way valve 22. At the same time, part of the intake air enters the inner side of the second piston cylinder 42. Under the action of air pressure, the air inside the second piston cylinder 42 can push the second piston rod 43 to move along the inner side of the second piston cylinder 42, so that the second piston rod 43 can drive the marking sealing shell 44 to move to the air outlet 41, so that the marking sealing shell 44 can seal the air outlet 41, so that the air inside the air collecting shell 23 no longer leaks. The rotating rod 9 drives the second conical tooth 30 to rotate through the bracket 29, so that the second conical tooth 30 can drive the transmission rod 27 to rotate by meshing with the first conical tooth 28, so that the transmission rod 27 can drive the reciprocating bolt 26 to rotate, so that the reciprocating bolt 26 can drive the first threaded block 25 by the thread action of the thread. The piston rod 24 moves along the inner side of the air collecting shell 23, allowing the first piston rod 24 to compress the air inside the air collecting shell 23 and increase the air pressure inside the air collecting shell 23. When the air pressure inside the air collecting shell 23 is higher than the air pressure threshold set by the safety valve 31, the safety valve 31 opens, allowing the high-pressure air inside the air collecting shell 23 to quickly enter the inner side of the first piston cylinder 39 through the connecting hose 32, threaded interface 33 and rotating shell 40. This high-pressure air compresses the pusher 38 to move along the inner side of the first piston cylinder 39, allowing the pusher 38 to move the pusher plate 37 through the telescopic frame 36. This allows the pusher plate 37 to push the two mounting shells 19 inside the feeding shell 3, allowing the clogged filter cotton sheet 20 to be moved away from the suction channel. The second spring 16 supports the first locking block 17, allowing the first locking block 17 to position the mounting shell 19 by engaging with the locking groove 18, so that the new filter cotton sheet 20 can be fixed on the suction channel for filtration.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The descriptions in the above embodiments and specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting sulfur dioxide in air, comprising a detection body (1), characterized in that: It also includes an active inhalation mechanism, a warning replacement mechanism, and a suspension and fixing mechanism; An active suction mechanism is provided on the detection body (1). The active suction mechanism includes a threaded sleeve (2) threaded on the detection body (1), a feeding shell (3) fixedly installed on the threaded sleeve (2), a connecting sleeve (4) fixedly installed on the feeding shell (3), a suction component on the connecting sleeve (4), and a self-cleaning component on the suction component. The warning replacement mechanism is located between the feeding shell (3) and the suction assembly. The warning replacement mechanism includes an abutting component on the feeding shell (3), a positioning component on the feeding shell (3), two mounting shells (19) slidingly installed on the inner side of the feeding shell (3), each mounting shell (19) having a symmetrical slot (18), and a filter cotton sheet (20) placed on the inner side of each mounting shell (19). The suction assembly has an air collection component, and a pushing component is provided between the connecting sleeve (4) and the air collection component. The suspension fixing mechanism is disposed between the threaded sleeve (2) and the suction assembly. The suspension fixing mechanism includes a protective component disposed between the threaded sleeve (2) and the suction assembly. The protective component is provided with a rotation adjustment component.

2. The device for detecting sulfur dioxide in air according to claim 1, characterized in that: The suction assembly includes a dust collection shell (5) fixedly installed on the connecting sleeve (4), a suction nozzle (6) fixedly installed on the dust collection shell (5), a filter screen (7) fixedly installed on the inner wall of the connecting sleeve (4), and a suction fan (8) provided on the inner wall of the connecting sleeve (4).

3. The device for detecting sulfur dioxide in air according to claim 2, characterized in that: The self-cleaning component includes a rotating rod (9) fixedly installed on the fan blades of the suction fan (8). The rotating rod (9) is rotatably connected to the filter screen (7). A mounting screw (10) is threaded on the rotating rod (9). A scraper (11) that fits against the filter screen (7) is clamped and fixed between the mounting screw (10) and the rotating rod (9).

4. The device for detecting sulfur dioxide in air according to claim 3, characterized in that: The abutting assembly includes a first spring (12) connected to the upper shell (3), the end of the first spring (12) is connected to a support frame (13) that is slidably connected to the upper shell (3), and an abutting ring (14) is fixedly installed on the support frame (13). The abutting ring (14) is located inside the upper shell (3) and abuts against one of the mounting shells (19).

5. The device for detecting sulfur dioxide in air according to claim 4, characterized in that: The positioning assembly includes two symmetrically fixed side sleeves (15) on the feed shell (3). The inner wall of each side sleeve (15) is connected to a second spring (16), and the end of the second spring (16) is connected to a first locking block (17) that is adapted to the locking groove (18).

6. The device for detecting sulfur dioxide in air according to claim 5, characterized in that: The air collection assembly includes a delivery pipe (21) fixedly mounted on the suction nozzle (6), an air inlet check valve (22) fixedly mounted on the delivery pipe (21), an air collection shell (23) fixedly mounted on the air inlet check valve (22), a first piston rod (24) slidably mounted on the inner side of the air collection shell (23), a first threaded block (25) fixedly mounted on the end of the first piston rod (24), and a reciprocating bolt (26) threaded on the inner side of the first threaded block (25). The suction nozzle (6) is... A limiting shell (261) is fixedly installed and slidably connected to the first threaded block (25). A transmission rod (27) is fixedly installed on the reciprocating bolt (26). The transmission rod (27) is fixed to the suction nozzle (6) through a bearing. A first conical tooth (28) is fixedly installed at the end of the transmission rod (27). Two brackets (29) are symmetrically fixedly installed on the rotating rod (9). A second conical tooth (30) that meshes with the first conical tooth (28) is fixedly installed on both brackets (29).

7. The device for detecting sulfur dioxide in air according to claim 6, characterized in that: The actuation assembly includes a safety valve (31) fixedly installed on the air collecting shell (23), a connecting hose (32) connected to the safety valve (31), a threaded interface (33) fixedly installed on the connecting hose (32), two support sleeves (34) symmetrically fixedly installed on the connecting sleeve (4), a third spring (35) connected to the inner wall of each support sleeve (34), the ends of the two third springs (35) are connected to a telescopic frame (36) slidably connected to the support sleeve (34), a push plate (37) and a push frame (38) fixedly installed on the telescopic frame (36), a first piston cylinder (39) fixed to the air collecting shell (23) slidably installed on the push frame (38), and a rotating shell (40) rotatably installed on the first piston cylinder (39) and threadedly connected to the threaded interface (33).

8. A device for detecting sulfur dioxide in air according to any one of claims 1-7, characterized in that: An air outlet (41) is provided on the air collecting shell (23). A second piston cylinder (42) is fixedly installed on the suction nozzle (6). The suction nozzle (6) and the second piston cylinder (42) are connected. A second piston rod (43) is slidably installed on the inner side of the second piston cylinder (42). A fourth spring (431) connected to the inner wall of the second piston cylinder (42) is connected to the second piston rod (43). A marking and sealing shell (44) that is slidably connected to the air collecting shell (23) is fixedly installed at the end of the second piston rod (43).

9. The device for detecting sulfur dioxide in air according to claim 6, characterized in that: The protective assembly includes a fixed housing (45) fixedly installed between the threaded sleeve (2) and the suction nozzle (6). A protective cover (46) is slidably installed on the fixed housing (45). Two side blocks (47) are symmetrically fixedly installed on the protective cover (46). A fifth spring (48) is connected to each side block (47). The end of the fifth spring (48) is connected to a locking plate (49) that is slidably connected to the side block (47). Two locking shells (50) that are locked to the locking plate (49) are symmetrically fixedly installed on the fixed housing (45). A vent (51) is provided on the protective cover (46).

10. The device for detecting sulfur dioxide in air according to claim 9, characterized in that: The rotation adjustment assembly includes two symmetrically fixed positioning blocks (52) on the protective cover (46). Each positioning block (52) is connected to two sixth springs (53). The end of each sixth spring (53) is connected to a second locking block (54) that is slidably connected to the positioning block (52). A rotating frame (55) is rotatably mounted on the positioning block (52). The inner wall of the rotating frame (55) is provided with multiple locking holes that engage with the second locking blocks (54). A hook plate (56) is fixedly mounted between the two rotating frames (55). A second threaded block (57) is fixedly mounted on the hook plate (56). A fastening bolt (58) is threaded onto the second threaded block (57). A clamping plate (59) that is slidably connected to the hook plate (56) is rotatably mounted on the fastening bolt (58).

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