Waste gas concentration detection mechanism, device and method

Abstract

The invention relates to the technical field of waste gas concentration detection, and provides a waste gas concentration detection mechanism, device and method, a sampling barrel is adopted for sampling, separation of various waste gases is realized under the action of centrifugal force, the waste gases are annularly distributed inside and outside, and respective detection operation is formed on a plurality of annularly distributed areas. The waste gas concentration detection device is used for improving the comprehensiveness and reliability of waste gas detection and forming comprehensive evaluation of various waste gases in a certain space, is more practical and comprises a plurality of waste gas concentration detectors, a detection sampling mechanism and a detection operation device, the detection sampling mechanism comprises a sampling barrel, a plurality of fan-shaped notches are formed in the bottom end of the sampling barrel, and a lifting barrel is slidably connected to the outside of the sampling barrel; a plurality of sector-shaped notches are formed in the lifting cylinder, a plurality of sector-shaped plates are arranged in the lifting cylinder, the sector-shaped plates are matched with the sector-shaped notches respectively, the sector-shaped plates are fixedly connected with reset springs, the reset springs are fixedly connected into the sampling cylinder, the top end of the sampling cylinder is fixedly connected with a clamping driving shaft, and the detection operation device comprises a main body frame.

Description

Technical Field

[0001] The present invention relates to the technical field of exhaust gas concentration detection, and in particular to an exhaust gas concentration detection mechanism, device and method. Background Art

[0002] As we all know, exhaust gas concentration detection plays a vital role in environmental protection and industrial production. Through accurate exhaust gas concentration detection, the emission of harmful substances can be effectively monitored and controlled, reducing the harm to the environment and human health. To facilitate exhaust gas concentration detection, we propose an exhaust gas concentration detection mechanism, device and method.

[0003] After searching, the Chinese patent publication number CN216792168U discloses an exhaust gas concentration detection device, which is roughly described as including a base, a connecting seat fixedly connected to the middle of the top of the base, a detection device is arranged above the connecting seat, a lifting mechanism is arranged inside the base, and a moving mechanism is arranged at the bottom of the base. The lifting mechanism includes a motor, a rotating shaft, a first gear, a gear chain, a second gear, a connecting shaft, a threaded rod and a lifting rod. The motor is fixedly connected to the right side of the top of the base. When in use, the equipment is moved to the detection location through the universal wheels and the pusher of the moving mechanism, and then the feet at the four corners of the bottom of the base are raised by the hydraulic cylinder, so that the equipment is stood firmly as a whole, and the detection device is sent into the air through the lifting mechanism. Specifically, the motor drives the first gear to rotate through the rotating shaft, thereby driving the meshing second gear to rotate through the gear chain, so that the threaded rod fixedly connected through the connecting shaft rotates, and since the top of the threaded rod is threadedly connected to the bottom end of the lifting rod, the lifting rod is lifted. The detection device is lifted into the sky, and then the high-altitude exhaust gas can be detected. The Chinese patent announcement number CN214794677U discloses an organic waste gas concentration detection device for environmental waste gas treatment, which is roughly described as comprising a first box body, a second box body and an exhaust gas concentration detector. One end of the first box body is fixedly connected to the second box body, and the lower part of the first box body away from the end of the second box body is fixedly connected to a mounting plate for installing an exhaust fan. The exhaust fan is connected to the first box body through an exhaust pipe. Two relatively parallel activated carbon filter plates are arranged in the first box body. The top of the second box body is fixedly connected to the exhaust gas concentration detector, and one end of the exhaust gas concentration detector is fixedly connected to a detection tube. The end of the detection tube away from the exhaust gas concentration detector passes through the top of the second box body and is located inside the second box body. A sponge board is arranged in the second box body, and an adsorbent is embedded in the sponge board. When in use, the exhaust gas concentration detector can detect the exhaust gas entering the second box body through the detection tube.

[0004] Although the above-mentioned existing technical solutions can realize the exhaust gas concentration detection, considering the influence of different gas densities and gas fluidity, different regions usually have different gas distributions, and the same region may also have different gas contents in different time periods. Therefore, during the actual exhaust gas detection operation, there will usually be large deviations in the flow state and exhaust gas detection distributed in different regions, and the detection reliability and reference of the detection data are poor. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides an exhaust gas concentration detection mechanism, device and method, which adopts a sampling tube for sampling, and separates various exhaust gases through the action of centrifugal force, so that the exhaust gas presents different annular distributions inside and outside, and forms separate detection operations for multiple annular distribution areas, so as to improve the comprehensiveness and reliability of exhaust gas detection, form a comprehensive evaluation of various exhaust gases in a certain space, and is more practical.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an exhaust gas concentration detection mechanism and device, including multiple exhaust gas concentration detectors, and also including a detection sampling mechanism and a detection operation device. The detection sampling mechanism includes a sampling cylinder, and the bottom end of the sampling cylinder is provided with multiple fan-shaped notches. The sampling cylinder is slidably connected to a lifting cylinder outside, and multiple fan-shaped plates are provided inside the lifting cylinder. The multiple fan-shaped plates are respectively matched with the multiple fan-shaped notches, and the multiple fan-shaped plates are fixedly connected to reset springs. The multiple reset springs are fixedly connected in the sampling cylinder, and the top end of the sampling cylinder is fixedly connected to a clamping drive shaft The detection operation device includes a main frame, a lifting structure is installed on the main frame, the lifting structure matches the clamping drive shaft, a lifting frame is slidably connected in the main frame, the bottom end of the lifting frame is connected to an electric adjustment rod, the electric adjustment rod is hinged in the main frame, a rotating table is rotatably connected to the lifting frame, a lifting ring is slidably connected on the rotating table, a plurality of lifting springs are fixedly connected to the bottom end of the lifting ring, a plurality of lifting springs are fixedly connected in the rotating table, a plurality of exhaust gas concentration detectors are installed in the rotating table, and a plurality of contact reaction detectors are installed in the rotating table.

[0007] Preferably, a plurality of mounting cavities are provided at the top of the rotating table, and a rotating shaft is rotatably connected in each of the plurality of mounting cavities, and a detection mounting plate is fixedly connected to each of the plurality of rotating shafts. A plurality of exhaust gas concentration detectors are respectively mounted on one end of the plurality of detection mounting plates, and a plurality of contact reaction detectors are respectively mounted on the other end of the plurality of detection mounting plates. A plurality of interlocking gears are rotatably connected in the rotating table, and a plurality of the interlocking gears are meshed with a driving rack and a transmission rack, a plurality of driving racks are fixedly connected to the lifting ring, a plurality of transmission racks are slidably connected in the rotating table, a plurality of transmission racks are meshed with a transmission gear, and a plurality of transmission gears are respectively fixedly connected to a plurality of rotating shafts.

[0008] Preferably, the distances between the plurality of installation cavities and the axis of the rotating table are in a gradually increasing gradient state, the plurality of rotating shafts are in a gradient structure of different lengths, and the plurality of fan-shaped plates are made of light-transmitting glass.

[0009] Preferably, a primary step opening and a secondary step opening are provided at the top of the lifting ring, and the primary step opening and the secondary step opening are matched with the lifting cylinder and the sampling cylinder respectively.

[0010] Preferably, the lifting structure includes a moving frame, a semi-enclosed groove is opened on the main frame, the moving frame is slidably connected in the semi-enclosed groove, the main frame is equipped with an electric adjustment rod, the electric adjustment rod is connected to the moving frame, the electric adjustment rod is used for adjusting and driving the position of the moving frame relative to the main frame, two active rods and two auxiliary rods are rotatably connected to the moving frame, and a synchronous drive structure is installed on the moving frame, the synchronous drive structure is used for synchronous rotation drive and control of the two active rods, an adjustment frame is rotatably connected between the two active rods, the two auxiliary rods are rotatably connected to the adjustment frame, a rotating clamping frame is rotatably connected to the adjustment frame, the rotating clamping frame is used for clamping and positioning the clamping drive shaft, and two first servo motors are installed on the adjustment frame, the two first servo motors are used for rotation drive of the rotating clamping frame.

[0011] Preferably, the rotating clamping frame includes a crescent ring frame, a ring track is fixedly connected to the adjusting frame, the crescent ring frame is rotatably connected to the ring track, and a gear ring is fixedly connected to the crescent ring frame, a driving gear is installed on the output shafts of the two first servo motors, and the two driving gears are meshed with the gear ring, and a first mounting groove, a second mounting groove and a third mounting groove are provided in the crescent ring frame, and a clamping arc rod is rotatably connected in the first mounting groove, the second mounting groove and the third mounting groove, and the clamping drive shaft matches the clamping arc rod, and three magnetic structures are provided in the crescent ring frame, and the three magnetic structures are respectively used for the rotational drive of the three clamping arc rods.

[0012] Preferably, the three magnetic structures all include a conductor column and a spiral rod, three vertical mounting grooves are provided on the crescent ring frame, the three conductor columns are respectively provided in the three vertical mounting grooves, spiral wires are wound on the three conductor columns, the three spiral rods are respectively slidably connected in the three vertical mounting grooves, and permanent magnets are fixedly connected to the three spiral rods. By energizing the spiral wires and controlling the direction and strength of the currents in the multiple spiral wires, the control of the electromagnetic field formed by the spiral wires and the conductor columns, as well as the control and adjustment of the magnetic force and direction of the electromagnetic field acting on the permanent magnet can be achieved. The three clamping arc rods are all provided with vertical openings, and vertical cylinders are fixedly connected in the three vertical openings. The three spiral rods are all fixedly connected with driving rods, and the three vertical cylinders are provided with spiral grooves matching the driving rods.

[0013] Preferably, the synchronous drive structure includes a second servo motor and a synchronous shaft, the second servo motor is mounted on the moving frame, the synchronous shaft is rotatably connected within the moving frame, the two active rods are fixedly connected to the synchronous shaft, a driven bevel gear is mounted on the synchronous shaft, the driven bevel gear is meshed with a driving bevel gear, and the driving bevel gear is mounted on the output shaft of the second servo motor.

[0014] Preferably, two mounting openings are provided on the adjustment frame, and the two driving gears are respectively located in the two mounting openings, and the three clamping arc rods are each provided with a clamping round head, and the bottom ends of the three clamping arc rods are each fixedly connected with an extended auxiliary supporting rod, and the left and right ends of the movable frame are each fixedly connected with a limiting rod, and the two limiting rods are respectively matched with the two active rods.

[0015] A method for detecting exhaust gas concentration comprises the following steps: S1. When in use, the sampling tube and the lifting tube are used to form a structure to sample the gas in the target space. After the sampling is completed, the lifting tube is installed relative to the main frame through the operation of the lifting structure, so that the lifting tube corresponds to the lifting ring up and down; S2, then start the electric adjustment rod to make the lifting frame rise in the main frame until the lifting ring and the lifting cylinder are in contact with each other and a contact seal is formed between the two; S3, then the hoisting structure operates to realize the rotational drive of the sampling tube by clamping the driving shaft, until the sampling tube enters the detection speed and maintains the detection speed at a constant speed, so that the collected exhaust gas sample is also subjected to the centrifugal effect to form an internal and external flow, presenting an internal and external layered form; S4. Subsequently, a plurality of exhaust gas concentration detectors and a plurality of contact reaction detectors (14) are used to respectively perform corresponding detections on different rotating surrounding layers to achieve exhaust gas detection.

[0016] Compared with the prior art, the present invention provides an exhaust gas concentration detection mechanism, device and method, which have the following beneficial effects: (1) In the present invention, the exhaust gas concentration detection mechanism and the sampling function unit in the device are formed through the design of the detection sampling mechanism, which is convenient for sampling the exhaust gas in the detected space. At the same time, it can also cooperate with the subsequent detection operation device to form light sensing detection and contact reaction detection, which is more practical.

[0017] (2) In the present invention, through the design of the hoisting structure, the matching detection and sampling mechanism forms a grasping and hoisting, which can form a rotational drive for the detection and sampling mechanism in the hoisted state, and the matching detection and sampling mechanism makes it enter a centrifugal state, so as to facilitate the detection of the exhaust gas in the sampling mechanism to present different annular distributions inside and outside.

[0018] (3) In the present invention, through the design of the detection operation device, it is possible to form separate detection operations for multiple annular distribution areas, so as to improve the comprehensiveness and reliability of exhaust gas detection and form a comprehensive evaluation of multiple exhaust gases in a certain space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle; Figure 3 For the present invention Figure 1 A schematic diagram of the local enlarged structure at B in the middle; Figure 4 It is a schematic diagram of the three-dimensional structure of the movable frame, the adjustment frame and the crescent ring frame of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the local enlarged structure at C in the middle; Figure 6 It is a partially cutaway three-dimensional structural schematic diagram of the main frame, lifting frame and lifting ring of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the local enlarged structure at D in the middle; Figure 8 It is a schematic diagram of the exploded three-dimensional structure of the sampling tube, the lifting tube and the fan-shaped plate of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the crescent ring frame and the gear ring of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the adjustment frame, the crescent ring frame and the driven bevel gear of the present invention; Fig.11 It is a bottom-up three-dimensional structural schematic diagram of the adjustment frame, the crescent ring frame and the driven bevel gear of the present invention; Fig.12 It is a schematic diagram of the exploded three-dimensional structure of the clamping arc rod, the spiral rod and the driving rod of the present invention; Fig.13 It is a schematic diagram of the overall three-dimensional structure of the present invention when viewed from above; Fig.14 It is a schematic diagram of a three-dimensional structure of the sampling tube, the lifting tube and the fan-shaped plate of the present invention, which is viewed from above; Fig.15 It is a schematic diagram of the three-dimensional structure of the lifting ring, the rotating shaft and the detection installation plate of the present invention; Fig.16 It is a bottom-up schematic diagram of the three-dimensional structure of the lifting ring, the rotating shaft and the detection mounting plate of the present invention.

[0020] In the figure: 1. Exhaust gas concentration detector; 2. Sampling tube; 3. Fan-shaped gap; 4. Lifting tube; 5. Fan-shaped plate; 6. Reset spring; 7. Clamping drive shaft; 8. Main frame; 9. Lifting frame; 10. Electric adjustment rod; 11. Turntable; 12. Lifting ring; 13. Lifting spring; 14. Contact reaction detector; 15. Installation cavity; 16. Rotating shaft; 17. Detection installation plate; 18. Linkage gear; 19. Drive rack; 20. Transmission rack; 21. Transmission gear; 22. First-level step opening; 23. Second-level step opening; 24. Moving frame; 25. Half package 1. groove; 26. electric adjustment rod; 27. active rod; 28. auxiliary rod; 29. ​​adjustment frame; 30. first servo motor; 31. crescent ring frame; 32. ring track; 33. gear ring; 34. driving gear; 35. clamping arc rod; 36. conductor column; 37. spiral rod; 38. spiral wire; 39. permanent magnet; 40. vertical cylinder; 41. driving rod; 42. second servo motor; 43. synchronous shaft; 44. driven bevel gear; 45. driving bevel gear; 46. installation port; 47. clamping round head; 48. extended auxiliary supporting rod; 49. limit rod. DETAILED DESCRIPTION

[0021] 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.

[0022] For examples, see Figure 1-Figure 16, an exhaust gas concentration detection mechanism and device, including multiple exhaust gas concentration detectors 1, and also including a detection sampling mechanism and a detection operation device. The detection sampling mechanism includes a sampling tube 2, and the bottom end of the sampling tube 2 is provided with multiple fan-shaped notches 3. The sampling tube 2 is slidably connected to the outside with a lifting tube 4, and the lifting tube 4 is provided with multiple fan-shaped plates 5. The multiple fan-shaped plates 5 are respectively matched with the multiple fan-shaped notches 3. The multiple fan-shaped plates 5 are fixedly connected with reset springs 6, and the multiple reset springs 6 are fixedly connected in the sampling tube 2. The top of the sampling tube 2 is fixedly connected with a clamping drive shaft 7. Through the design of the detection sampling mechanism, a sampling function unit in the exhaust gas concentration detection mechanism and device is formed, which is convenient for the detected space The sampling of exhaust gas can also cooperate with the subsequent detection operation device to form light sensing detection and contact reaction detection, which is more practical. The detection operation device includes a main frame 8, a lifting frame 9 is slidably connected in the main frame 8, and the bottom end of the lifting frame 9 is connected to an electric adjustment rod 10, which is hinged in the main frame 8. A rotating table 11 is rotatably connected to the lifting frame 9, and a lifting ring 12 is slidably connected to the rotating table 11. The bottom end of the lifting ring 12 is fixedly connected to a plurality of lifting springs 13, and the plurality of lifting springs 13 are all fixedly connected in the rotating table 11. A plurality of exhaust gas concentration detectors 1 are installed in the rotating table 11, and a plurality of contact reaction detectors 1 are installed in the rotating table 11. 4. A plurality of mounting cavities 15 are provided at the top of the rotating table 11. A rotating shaft 16 is rotatably connected in each of the plurality of mounting cavities 15. A detection mounting plate 17 is fixedly connected to each of the plurality of rotating shafts 16. A plurality of exhaust gas concentration detectors 1 are respectively mounted on one end of the plurality of detection mounting plates 17. A plurality of contact reaction detectors 14 are respectively mounted on the other end of the plurality of detection mounting plates 17. A plurality of linkage gears 18 are rotatably connected in the rotating table 11. A plurality of linkage gears 18 are meshed with a driving rack 19 and a transmission rack 20. A plurality of driving racks 19 are fixedly connected to the lifting ring 12. A plurality of transmission racks 20 are slidably connected in the rotating table 11. A plurality of transmission racks 20 are meshed with There is a transmission gear 21, and multiple transmission gears 21 are respectively fixedly connected to multiple rotating shafts 16. The distance between the multiple installation cavities 15 and the axis of the rotating table 11 is gradually increasing. The multiple rotating shafts 16 are gradual structures of different lengths. The multiple fan-shaped plates 5 are all made of translucent glass. The top of the lifting ring 12 is provided with a primary step opening 22 and a secondary step opening 23. The primary step opening 22 and the secondary step opening 23 are matched with the lifting tube 4 and the sampling tube 2 respectively. Through the design of the detection operation device, separate detection operations can be formed for multiple annular distribution areas to improve the comprehensiveness and reliability of exhaust gas detection and form a comprehensive evaluation of multiple exhaust gases in a certain space.

[0023] It should be further explained that a lifting structure is installed on the main frame 8, and the lifting structure matches the clamping drive shaft 7. The lifting structure includes a moving frame 24. A semi-enclosed groove 25 is opened on the main frame 8, and the moving frame 24 is slidably connected in the semi-enclosed groove 25. The main frame 8 is installed with an electric adjustment rod 26, and the electric adjustment rod 26 is connected to the moving frame 24. The electric adjustment rod 26 is used for adjusting the position of the moving frame 24 relative to the main frame 8. The moving frame 24 is rotatably connected to two active rods 27 and two auxiliary rods 28, and a synchronous drive structure is installed on the moving frame 24. The synchronous drive structure is used for synchronous rotation drive and control of the two active rods 27. An adjustment frame 29 is rotatably connected between the two active rods 27, and the two auxiliary rods 28 are both rotatable with the adjustment frame 29 The adjusting frame 29 is rotatably connected with a rotating clamping frame, which is used for clamping and positioning the driving shaft 7, and two first servo motors 30 are installed on the adjusting frame 29, and the two first servo motors 30 are used for rotational drive of the rotating clamping frame, and the rotating clamping frame includes a crescent ring frame 31, and a ring track 32 is fixedly connected in the adjusting frame 29, and the crescent ring frame 31 is rotatably connected in the ring track 32, and a gear ring 33 is fixedly connected to the crescent ring frame 31, and a driving gear 34 is installed on the output shafts of the two first servo motors 30, and the two driving gears 34 are meshed with the gear ring 33, and two mounting ports 46 are provided on the adjusting frame 29, and the two driving gears 34 are respectively located in the two mounting ports 46, and a first mounting groove is provided in the crescent ring frame 31, The second installation groove and the third installation groove, the first installation groove, the second installation groove and the third installation groove are all rotatably connected with the clamping arc rod 35, the clamping drive shaft 7 is matched with the clamping arc rod 35, three magnetic structures are arranged in the crescent ring frame 31, the three magnetic structures are respectively used for the rotation drive of the three clamping arc rods 35, the three magnetic structures all include a conductor column 36 and a spiral rod 37, three vertical installation grooves are arranged on the crescent ring frame 31, three conductor columns 36 are respectively arranged in the three vertical installation grooves, spiral wires 38 are wound on the three conductor columns 36, three spiral rods 37 are respectively slidably connected in the three vertical installation grooves, and permanent magnets 39 are fixedly connected to the three spiral rods 37, by energizing the spiral wires 38 and controlling the current in the plurality of spiral wires 38 The direction and strength can realize the control of the electromagnetic field formed by the spiral wire 38 and the conductor column 36, as well as the control and adjustment of the magnetic force size and direction of the electromagnetic field acting on the permanent magnet 39. The three clamping arc rods 35 are each provided with a vertical opening, and the three vertical openings are each fixedly connected with a vertical cylinder 40. The three spiral rods 37 are each fixedly connected with a driving rod 41, and the three vertical cylinders 40 are each provided with a spiral groove matching the driving rod 41. The synchronous drive structure includes a second servo motor 42 and a synchronous shaft 43. The second servo motor 42 is installed on the moving frame 24, and the synchronous shaft 43 is rotatably connected in the moving frame 24. The two active rods 27 are both fixedly connected to the synchronous shaft 43, and a driven bevel gear 44 is installed on the synchronous shaft 43. The driven bevel gear 44 is meshed with a driving bevel gear 45.The driving bevel gear 45 is installed on the output shaft of the second servo motor 42. Through the design of the hoisting structure, the matching detection sampling mechanism forms the grasping and hoisting, which can form the rotation drive for the detection sampling mechanism in the hoisting state. The matching detection sampling mechanism makes it enter the centrifugal state, so as to facilitate the detection of the exhaust gas in the sampling mechanism to present different annular distribution inside and outside. The three clamping arc rods 35 are all provided with clamping round heads 47, and the bottom ends of the three clamping arc rods 35 are fixedly connected with the extended auxiliary supporting rods 48. The left and right ends of the moving frame 24 are fixedly connected with the limit rods 49, and the two limit rods 49 are matched with the two active rods 27 respectively.

[0024] The electric adjustment rod 10, the electric adjustment rod 26, the first servo motor 30, the second servo motor 42, the exhaust gas concentration detector 1 and the contact reaction detector 14 in this embodiment are all conventional equipment purchased on the market and known to those skilled in the art. In the present invention, we only use them and do not improve their structure and function. For those skilled in the art, their setting method, installation method and electrical connection method only need to be debugged and operated according to the requirements of their instruction manual, and will not be described in detail here.

[0025] In summary, the working process of the exhaust gas concentration detection mechanism and device is as follows: before use, the exhaust gas concentration detection mechanism and device are first placed at the desired location, and the electric adjustment rod 10, the electric adjustment rod 26, the first servo motor 30 and the second servo motor 42 are connected to the corresponding control circuit according to the instructions, and the spiral wire 38 is equipped with a controller for current adjustment and current direction control, and the detection signal formed by the exhaust gas concentration detector 1 and the contact reaction detector 14 is connected to the information of the external storage computer. When in use, the gas in the target space is first sampled through the structure formed by the sampling tube 2 and the lifting tube 4. When sampling, the elastic force of the reset spring 6 is overcome, and the lifting tube 4 is pushed relative to the sampling tube 2 to expose the fan-shaped notch 3. After that, the inside and outside of the sampling tube 2 are connected through the fan-shaped notch 3. In order to assist the exhaust gas in the sampling space to enter the sampling tube 2, in order to facilitate the smooth sampling of the sampling tube 2, before sampling, the sampling tube 2 is pre-filled with liquid, and then the liquid in the sampling tube 2 is emptied in the sampling space to realize the introduction of exhaust gas in the sampling space for sampling. It should be noted that the filling liquid needs to be made of a material that does not react with the exhaust gas and is difficult to dissolve in the exhaust gas. After the sampling is completed, the auxiliary driving force acting on the lifting cylinder 4 is released. Under the elastic reset action of the reset spring 6, the lifting cylinder 4 is reset relative to the sampling cylinder 2, and the fan-shaped plate 5 is also reset relative to the fan-shaped notch 3 to cover the fan-shaped notch 3. In this state, the area enclosed by the sampling cylinder 2, the lifting cylinder 4 and the fan-shaped plate 5 is relatively sealed and independent from the outside world. After that, the sampling cylinder 2 is installed relative to the main frame 8 through the operation of the lifting structure, so that the lifting cylinder 4 and the lifting ring 12 correspond to each other up and down.

[0026] Further, the sampling tube 2 to be tested is placed at the front end of the main frame 8, and then the electric adjustment rod 26 and the second servo motor 42 form a cooperative work to achieve the position adjustment of the rotating clamping frame relative to the sampling tube 2. The electric adjustment rod 26 works to realize the front and rear position movement adjustment of the moving frame 24 relative to the main frame 8. The second servo motor 42 works under the meshing transmission action of the driving bevel gear ring 33 and the driven bevel gear ring 33 to realize the rotation drive of the synchronization shaft 43. The rotation of the synchronization shaft 43 drives the two active rods 27 to form a synchronous movement. The two active rods 27 move synchronously to realize the height adjustment of the adjustment frame 29. Under the coordinated action of the auxiliary rods 28, the adjustment frame 29 can adjust its own position during the movement. The rotating clamping frame will cooperate with the adjusting frame 29 to form a synchronous displacement change and form a position relative to the sampling tube 2, so that the clamping drive shaft 7 enters the enclosed area formed by the three clamping arc rods 35. Then, the multiple spiral wires 38 are powered on, so that the multiple spiral wires 38 are respectively coordinated with the multiple conductor columns 36 to form multiple electromagnetic fields, and the multiple electromagnetic fields are used to form relative magnetic forces with the multiple permanent magnets 39 to achieve the rotation drive of the three clamping arc rods 35. The three clamping arc rods 35 rotate synchronously to clamp the round head 47 contacts the clamping drive shaft 7 and forms a certain clamping force, so that the relative friction between the clamping arc rod 35 and the sampling tube 2 formed by the clamping force can overcome the self-weight of the sampling tube 2. In this state, when the second servo motor 42 works to realize the lifting of the adjustment frame 29 relative to the main frame 8, the synchronous lifting of the sampling tube 2 can be achieved. The sampling tube 2 is lifted and moved to the main frame 8 through the cooperation of the second servo motor 42 and the electric adjustment rod 26. When the active rod 27 is rotated and limited by the limit rod 49, the sampling tube 2 just corresponds to the lifting ring 12 up and down, and the multiple sector plates 5 at the bottom of the sampling tube 2 are checked. The positions of the multiple installation cavities 15 are respectively adjusted to make the multiple installation cavities 15 located directly below the multiple sector plates 5. If necessary, the rotating table 11 is assisted to rotate so that the multiple installation cavities 15 correspond to the upper and lower parts of the multiple sector plates 5. Then, the second servo motor 42 and the electric adjustment rod 26 enter the parking state, and the electric adjustment rod 10 is started to raise the lifting frame 9 in the main frame 8 until the lifting ring 12 contacts the lifting cylinder 4 up and down, and a contact seal is formed between the two. At this time, the lifting cylinder 4 is inserted into the primary step opening 22, and the bottom ring surface of the lifting cylinder 4 is in tight contact with the inner bottom surface of the primary step opening 22.

[0027] Furthermore, the hoisting structure then operates to realize the rotational drive of the sampling tube 2 by clamping the driving shaft 7 until the sampling tube 2 enters the detection speed and maintains the detection speed at a uniform speed, so that the collected exhaust gas sample is also subjected to the centrifugal effect to form internal and external flow, presenting an internal and external stratified form, that is, the first servo motor 30 works, and the two driving gears 34 cooperate with the gear ring 33 to form a rotational drive of the crescent ring frame 31. The crescent ring frame 31 rotates to form a corresponding drive of the sampling tube 2 clamped by the three clamping arc rods 35. After the sampling tube 2 rotates, due to the action of the rotational centrifugal force, the exhaust gas in the sampling tube 2 will form a follow-up rotational motion. Since the densities of different types of exhaust gases are different, the centrifugal forces they bear are also different, so gas stratification can be finally achieved. Then, corresponding detection is formed on the exhaust gas of different rotating surrounding layers through multiple exhaust gas concentration detectors 1 and multiple contact reaction detectors 14. The exhaust gas concentration detector 1 is an instrument that uses light source to form gas detection. Since the lifting cylinder 4 is inserted into the lifting ring 12 and the two are in close contact with each other, under the action of the relative contact friction between the lifting cylinder 4 and the lifting ring 12, the lifting ring 12 will rotate synchronously with the lifting cylinder 4, so that in the rotating state, the multiple exhaust gas concentration detectors 1 are respectively in a state of relative motion and stillness with the multiple fan-shaped plates 5. Therefore, during the detection operation, the exhaust gas concentration detector 1 emits light through the transparent fan-shaped plate 5 to form a detection on the exhaust gas in the sampling cylinder 2, such as using the characteristics of infrared rays to measure the pollutant concentration in the exhaust gas, which has the function of being detected. The light with a wavelength unique to the exhaust gas is absorbed. The higher the exhaust gas concentration, the less the light flux. The contact reaction detector 14 selects the detection principle of the chemical reaction formula. During the detection operation, the electric adjustment rod 10 is controlled to operate to make the lifting frame 9 further rise in the main frame 8. At this time, the lifting ring 12 will overcome the elastic force of the lifting spring 13 and fall relative to the rotating table 11. At the same time, under the action of the relative driving force of the lifting ring 12, the lifting cylinder 4 will also rise relative to the sampling cylinder 2, so that the internal gas of the sampling cylinder 2 contacts the top surface of the rotating table 11. When the lifting ring 12 falls relative to the rotating table 11, it will drive multiple driving racks 19 to fall synchronously. The falling multiple driving racks 19 respectively drive multiple linkage gears 18 to rotate. The rotation of the linkage gears 18 drives the rotation of the multiple transmission gears 21 respectively, and the rotation of the multiple transmission gears 21 drives the rotation of the multiple rotating shafts 16 respectively. The rotation of the multiple rotating shafts 16 will drive the multiple detection mounting plates 17 to flip respectively, so that the contact reaction detector 14 originally at the bottom of the detection mounting plate 17 is adjusted to the upper side and enters the fan-shaped notch 3, so that the contact reaction detector 14 is in contact with the exhaust gas to be detected in the sampling tube 2, so that the contact reaction detector 14 and the exhaust gas are in contact and produce a corresponding reaction, and finally the exhaust gas component detection is determined according to the reaction situation in the contact reaction detector 14. After the detection is completed, the sampling tube 2 is first controlled to slow down until it stops rotating, and then the rotating table 11 is reset relative to the sampling tube 2 by the operation of the electric adjustment rod 10.During this process, the lifting cylinder 4 will fall and reset relative to the sampling cylinder 2, the lifting ring 12 will rise and reset relative to the rotating table 11, and the detection mounting plate 17 will also flip and reset. Since the exhaust gas concentration detector 1 is a reusable device, it does not need to be replaced, and the contact reaction detector 14 is a device that contacts and reacts with the exhaust gas, so it needs to be replaced when it is tested again after the detection is completed. When replacing the contact reaction detector 14, it is only necessary to keep the top of the rotating table 11 in an open state, and then manually press the lifting ring 12 relative to the rotating table 11 to realize the rotation adjustment of the detection mounting plate 17, so that the contact reaction detector 14 can be exposed and replaced. In normal circumstances, the contact reaction detector 14 is located in the space formed by the detection mounting plate 17 and the mounting cavity 15, so the relatively independent space also helps to protect the contact reaction detector 14.

[0028] 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 exhaust gas concentration detection mechanism and device, comprising a plurality of exhaust gas concentration detectors (1), characterized in that: The detection sampling mechanism also includes a detection operation device, wherein the detection sampling mechanism includes a sampling tube (2), wherein a plurality of fan-shaped notches (3) are arranged at the bottom end of the sampling tube (2), a lifting tube (4) is slidably connected to the outside of the sampling tube (2), a plurality of fan-shaped plates (5) are arranged inside the lifting tube (4), the plurality of fan-shaped plates (5) are respectively matched with the plurality of fan-shaped notches (3), the plurality of fan-shaped plates (5) are all fixedly connected to a reset spring (6), the plurality of reset springs (6) are all fixedly connected to the sampling tube (2), the top end of the sampling tube (2) is fixedly connected to a clamping drive shaft (7), and the detection operation device includes a main frame (8), the main frame (8) is provided with a lifting structure, and the lifting structure The mounting structure matches the clamping drive shaft (7), a lifting frame (9) is slidably connected in the main frame (8), the bottom end of the lifting frame (9) is connected to an electric adjustment rod (10), the electric adjustment rod (10) is hinged in the main frame (8), the lifting frame (9) is rotatably connected to a rotating table (11), the rotating table (11) is slidably connected to a lifting ring (12), the bottom end of the lifting ring (12) is fixedly connected to a plurality of lifting springs (13), the plurality of lifting springs (13) are all fixedly connected in the rotating table (11), a plurality of exhaust gas concentration detectors (1) are all installed in the rotating table (11), and a plurality of contact reaction detectors (14) are installed in the rotating table (11).

2. The exhaust gas concentration detection mechanism and device according to claim 1, characterized in that: A plurality of mounting cavities (15) are provided at the top of the rotating table (11), and a rotating shaft (16) is rotatably connected in each of the mounting cavities (15). A detection mounting plate (17) is fixedly connected to each of the rotating shafts (16). A plurality of exhaust gas concentration detectors (1) are respectively mounted on one end of the detection mounting plates (17), and a plurality of contact reaction detectors (14) are respectively mounted on the other end of the detection mounting plates (17). A plurality of linkage gears (18) are rotatably connected in the rotating table (11), and a plurality of linkage gears (18) are meshed with a driving rack (19) and a transmission rack (20). A plurality of driving racks (19) are fixedly connected to the lifting ring (12), and a plurality of transmission racks (20) are slidably connected in the rotating table (11). A plurality of transmission racks (20) are meshed with a transmission gear (21), and a plurality of transmission gears (21) are respectively fixedly connected to a plurality of rotating shafts (16).

3. An exhaust gas concentration detection mechanism and device according to claim 2, characterized in that: The distances between the plurality of mounting cavities (15) and the axis of the rotating platform (11) are in a gradually increasing gradient state, the plurality of rotating shafts (16) are in a gradient structure of varying lengths, and the plurality of fan-shaped plates (5) are all made of light-transmitting glass.

4. The exhaust gas concentration detection mechanism and device according to claim 3, characterized in that: The top end of the lifting ring (12) is provided with a primary step opening (22) and a secondary step opening (23), and the primary step opening (22) and the secondary step opening (23) are matched with the lifting cylinder (4) and the sampling cylinder (2) respectively.

5. The exhaust gas concentration detection mechanism and device according to claim 4, characterized in that: The hoisting structure comprises a moving frame (24), a semi-enclosed groove (25) is provided on the main frame (8), the moving frame (24) is slidably connected in the semi-enclosed groove (25), the main frame (8) is equipped with an electric adjustment rod (26), the electric adjustment rod (26) is connected to the moving frame (24), the electric adjustment rod (26) is used to adjust the position of the moving frame (24) relative to the main frame (8), the moving frame (24) is rotatably connected with two active rods (27) and two auxiliary rods (28), and the moving frame (24) is equipped with A synchronous drive structure, the synchronous drive structure is used for synchronous rotation drive and control of the two active rods (27), an adjustment frame (29) is rotationally connected between the two active rods (27), the two auxiliary rods (28) are rotationally connected to the adjustment frame (29), a rotating clamping frame is rotationally connected to the adjustment frame (29), the rotating clamping frame is used for clamping and positioning the clamping drive shaft (7), and two first servo motors (30) are installed on the adjustment frame (29), and the two first servo motors (30) are used for rotation drive of the rotating clamping frame.

6. The exhaust gas concentration detection mechanism and device according to claim 5, characterized in that: The rotating clamping frame comprises a crescent ring frame (31), a ring track (32) is fixedly connected inside the adjusting frame (29), the crescent ring frame (31) is rotatably connected inside the ring track (32), and a gear ring (33) is fixedly connected to the crescent ring frame (31), a driving gear (34) is mounted on the output shafts of the two first servo motors (30), and the two driving gears (34) are meshed with the gear ring (33), a first mounting groove, a second mounting groove and a third mounting groove are arranged inside the crescent ring frame (31), a clamping arc rod (35) is rotatably connected inside the first mounting groove, the second mounting groove and the third mounting groove, the clamping drive shaft (7) matches the clamping arc rod (35), and three magnetic structures are arranged inside the crescent ring frame (31), and the three magnetic structures are respectively used for rotationally driving the three clamping arc rods (35).

7. An exhaust gas concentration detection mechanism and device according to claim 6, characterized in that: The three magnetic structures each comprise a conductor column (36) and a spiral rod (37); the crescent ring frame (31) is provided with three vertical installation grooves; the three conductor columns (36) are respectively arranged in the three vertical installation grooves; the three conductor columns (36) are each wound with a spiral wire (38); the three spiral rods (37) are respectively slidably connected in the three vertical installation grooves; the three spiral rods (37) are each fixedly connected with a permanent magnet (39); by energizing the spiral wires (38) and controlling the plurality of spiral wires ( The direction and strength of the current in the permanent magnet (39) can realize the control of the electromagnetic field formed by the spiral conductor (38) and the conductor column (36), as well as the control and adjustment of the magnitude and direction of the magnetic force of the electromagnetic field acting on the permanent magnet (39). The three clamping arc rods (35) are each provided with a vertical opening, and the three vertical openings are each fixedly connected to a vertical cylinder (40). The three spiral rods (37) are each fixedly connected to a driving rod (41), and the three vertical cylinders (40) are each provided with a spiral groove matching the driving rod (41).

8. The exhaust gas concentration detection mechanism and device according to claim 7, characterized in that: The synchronous drive structure comprises a second servo motor (42) and a synchronous shaft (43); the second servo motor (42) is mounted on the moving frame (24); the synchronous shaft (43) is rotatably connected in the moving frame (24); the two active rods (27) are fixedly connected to the synchronous shaft (43); a driven bevel gear (44) is mounted on the synchronous shaft (43); the driven bevel gear (44) is meshed with a driving bevel gear (45); and the driving bevel gear (45) is mounted on the output shaft of the second servo motor (42).

9. The exhaust gas concentration detection mechanism and device according to claim 8, characterized in that: The adjustment frame (29) is provided with two mounting openings (46), the two driving gears (34) are respectively located in the two mounting openings (46), the three clamping arc rods (35) are each provided with a clamping round head (47), and the bottom ends of the three clamping arc rods (35) are each fixedly connected to an extended auxiliary supporting rod (48), and the left and right ends of the moving frame (24) are each fixedly connected to a limiting rod (49), and the two limiting rods (49) are respectively matched with the two active rods (27).

10. A method for detecting exhaust gas concentration, characterized in that: An exhaust gas concentration detection mechanism and device according to any one of claims 1 to 9 is used, comprising the following steps: S1. When in use, the sampling of the gas in the target space is first performed by the structure formed by the cooperation of the sampling tube (2) and the lifting tube (4). After the sampling is completed, the sampling tube (2) is installed relative to the main frame (8) through the operation of the lifting structure, so that the lifting tube (4) and the lifting ring (12) correspond to each other up and down; S2, then starting the electric adjustment rod (10) to raise the lifting frame (9) in the main frame (8) until the lifting ring (12) and the lifting cylinder (4) are in contact with each other and a contact seal is formed between the two; S3, the hoisting structure then operates to drive the sampling tube (2) to rotate by clamping the driving shaft (7) until the sampling tube (2) reaches the detection speed and maintains the detection speed at a constant speed, so that the collected exhaust gas sample is also subjected to the centrifugal effect to form an internal and external flow, presenting an internal and external layered form; S4. Subsequently, a plurality of exhaust gas concentration detectors (1) and a plurality of contact reaction detectors (14) are used to respectively perform corresponding detections on different rotating surrounding layers, so as to achieve exhaust gas detection.

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