An exhaust gas concentration detection mechanism, device and method

Abstract

The present invention relates to the technical field of exhaust gas concentration detection, and proposes an exhaust gas concentration detection mechanism, device and method. It uses a sampling cylinder for sampling, and realizes the separation of various exhaust gases through the action of centrifugal force, so that the exhaust gas shows different inner and outer annular distributions, and performs separate detection operations on multiple annular distribution regions to improve the comprehensiveness and reliability of exhaust gas detection, form a comprehensive evaluation of multiple exhaust gases in a certain space, and is more practical. It includes multiple exhaust gas concentration detectors, and also includes a detection sampling mechanism and a detection operation device. The detection sampling mechanism includes a sampling cylinder. The bottom end of the sampling cylinder is provided with a plurality of sector-shaped notches. A lifting cylinder is slidably connected outside the sampling cylinder. A plurality of sector-shaped plates are arranged inside the lifting cylinder. The plurality of sector-shaped plates respectively match the plurality of sector-shaped notches. A plurality of sector-shaped plates are fixedly connected with return springs, and the plurality of return springs are fixedly connected inside the sampling cylinder. The top end of the sampling cylinder is fixedly connected with a clamping drive shaft. The detection operation device includes a main body frame.

Description

Technical Field

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

[0002] As is well known, exhaust gas concentration detection plays a crucial 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 retrieval, the patent with the Chinese patent publication number CN216792168U discloses an exhaust gas concentration detection device, which is generally described as including a base. A connection seat is fixedly connected to the middle of the top of the base. A detection device is arranged above the connection 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 coupling 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 device is moved to the detection location through the universal wheels and the pusher of the moving mechanism, and then the anchor bolts at the four corners of the bottom of the base are lifted by a hydraulic cylinder, so as to make the whole device stand stably. 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, and then drives the engaged second gear to rotate through the gear chain, so that the threaded rod fixedly connected by the coupling shaft rotates. Since the top of the threaded rod is threadedly connected to the bottom end of the lifting rod, the lifting rod rises, so that the detection device rises into the air, and then the exhaust gas at high altitude can be detected. The patent with the Chinese patent publication number CN214794677U discloses an organic exhaust gas concentration detection device for environmental protection exhaust gas treatment, which is generally described as including 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. A mounting plate for installing a suction fan is fixedly connected to the lower part of the end of the first box body far away from the second box body. The suction fan is connected to the first box body through a suction pipe. Two relatively parallel activated carbon filter plates are arranged inside the first box body. An exhaust gas concentration detector is fixedly connected to the top end of the second box body. One end of the exhaust gas concentration detector is fixedly connected to a detection pipe. The end of the detection pipe far away from the exhaust gas concentration detector passes through the top end of the second box body and is located inside the second box body. A sponge plate is arranged inside the second box body, and an adsorbent is embedded in the sponge plate. When in use, the exhaust gas concentration detector can detect the exhaust gas entering the second box body through the detection pipe.

[0004] Although the above-mentioned prior art solutions can all achieve exhaust gas concentration detection, considering the influence of the density of different gases and the fluidity of the gas, different regions usually exhibit different gas distributions, and different gas contents also exist in the same region at different time periods. Therefore, during the actual exhaust gas detection operation, there are usually large deviations in the detection of exhaust gas in a flowing state and different regional distributions, and both the detection reliability and the referenceability of the detection data are poor. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an exhaust gas concentration detection mechanism, device and method. It uses a sampling cylinder for sampling, and realizes the separation of multiple exhaust gases through the action of centrifugal force, making the exhaust gas present an internal and external different annular distribution, and forming separate detection operations on multiple annular distribution regions to improve the comprehensiveness and reliability of exhaust gas detection, form a comprehensive evaluation of multiple exhaust gases in a certain space, and is more practical.

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

[0007] Preferably, a plurality of installation cavities are opened at the top end of the rotating table, a rotating shaft is rotatably connected inside each of the plurality of installation cavities, a detection installation plate is fixedly connected to each of the plurality of rotating shafts, a plurality of exhaust gas concentration detectors are respectively installed at one end of each of the plurality of detection installation plates, and a plurality of contact reaction detectors are respectively installed at the other end of each of the plurality of detection installation plates. A plurality of linkage gears are rotatably connected inside the rotating table, each of the plurality of linkage gears meshes with a driving rack and a transmission rack, each of the plurality of driving racks is fixedly connected to the lifting ring, each of the plurality of transmission racks is slidably connected inside the rotating table, each of the plurality of transmission racks meshes with a transmission gear, and the plurality of transmission gears are respectively fixedly connected to the plurality of rotating shafts.

[0008] Preferably, the distances of the plurality of installation cavities from the axis of the turntable are in a gradually increasing gradient state, the plurality of rotating shafts are of a gradient structure with different lengths, and the plurality of sector plates are all made of light-transmitting glass.

[0009] Preferably, a first stepped opening and a second stepped opening are provided at the top of the lifting ring, and the first stepped opening and the second stepped opening are respectively matched with the lifting cylinder and the sampling cylinder.

[0010] Preferably, the hoisting structure includes a moving frame, a semi-enclosed groove is formed in the main body frame, the moving frame is slidably connected in the semi-enclosed groove, an electric adjustment rod is installed on the main body frame, the electric adjustment rod is connected to the moving frame, and the electric adjustment rod is used for driving the position adjustment of the moving frame relative to the main body frame. Two driving rods and two auxiliary rods are rotatably connected to the moving frame, and a synchronous driving structure is installed on the moving frame. The synchronous driving structure is used for the synchronous rotation driving and control of the two driving rods. An adjustment frame is rotatably connected between the two driving rods, and both of 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 the clamping and positioning of the clamping drive shaft, and two first servo motors are installed on the adjustment frame. Both of the two first servo motors are used for driving the rotation of the rotating clamping frame.

[0011] Preferably, the rotating clamping frame includes a crescent ring frame, a ring track is fixedly connected inside the adjustment frame, the crescent ring frame is rotatably connected in the ring track, and a toothed ring is fixedly connected to the crescent ring frame. Driving gears are installed on the output shafts of the two first servo motors, and both of the two driving gears are meshed with the toothed ring. A first installation groove, a second installation groove and a third installation groove are arranged inside the crescent ring frame. Clamping arc rods are rotatably connected in the first installation groove, the second installation groove and the third installation groove. The clamping drive shaft is matched with the clamping arc rods. Three magnetic structures are arranged inside the crescent ring frame. The three magnetic structures are respectively used for driving the rotation of the three clamping arc rods.

[0012] Preferably, the three magnetic structures all include conductor columns and spiral rods. Three installation vertical grooves are arranged on the crescent ring frame. The three conductor columns are respectively arranged in the three installation vertical grooves. Spiral wires are wound around the three conductor columns. The three spiral rods are respectively slidably connected in the three installation vertical grooves. Permanent magnets are fixedly connected to the three spiral rods. By energizing the spiral wires and controlling the direction and strength of the current in the plurality of spiral wires, the control of the electromagnetic field formed by the cooperation of the spiral wires and the conductor columns can be realized, as well as the control and adjustment of the magnetic force magnitude and magnetic force direction of the electromagnetic field acting on the permanent magnets. Vertical openings are arranged on the three clamping arc rods, vertical cylinders are fixedly connected in the three vertical openings, driving rods are fixedly connected to the three spiral rods, and spiral grooves matched with the driving rods are arranged in the three vertical cylinders.

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

[0014] Preferably, two mounting openings are provided on the adjusting frame, the two driving gears are respectively located within the two mounting openings, clamping round heads are provided on all three clamping arc rods, and extension auxiliary clamping rods are fixedly connected to the bottom ends of the three clamping arc rods. Limiting rods are fixedly connected to the left and right ends of the moving frame, and the two limiting rods respectively match the two driving rods.

[0015] An exhaust gas concentration detection method includes the following steps:

[0016] S1. During use, first, a structure formed by the sampling cylinder and the lifting cylinder is used to sample the gas in the target space. After sampling is completed, the sampling cylinder is loaded relative to the main frame through the operation of the hoisting structure, so that the lifting cylinder corresponds to the lifting ring up and down;

[0017] S2. Then, the electric adjusting rod is started to raise the lifting frame within the main frame until the lifting ring contacts the lifting cylinder up and down and forms a contact seal therebetween;

[0018] S3. Then, the hoisting structure operates to drive the rotation of the sampling cylinder through the clamping drive shaft until the sampling cylinder enters the detection rotation speed and maintains a uniform operation at the detection rotation speed, so that the collected exhaust gas sample also undergoes centrifugal action to form internal and external flows and presents an internal and external stratified form;

[0019] S4. Then, multiple exhaust gas concentration detectors and multiple contact reaction detectors (14) are respectively used to perform corresponding detections on different rotation surrounding layers to achieve exhaust gas detection.

[0020] Compared with the prior art, the present invention provides an exhaust gas concentration detection mechanism, device and method, which have the following beneficial effects:

[0021] (1) In the present invention, through the design of the detection sampling mechanism, a sampling functional unit in the exhaust gas concentration detection mechanism and device is formed, which is convenient for sampling the exhaust gas in the space to be detected. 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.

[0022] (2) In the present invention, through the design of the hoisting structure, the matching detection and sampling mechanism forms grasping and hoisting, and can form rotational drive for the detection and sampling mechanism in the hoisted state, and the matching detection and sampling mechanism is made to enter the centrifugal state, so as to facilitate the exhaust gas in the detection and sampling mechanism to present different annular distributions inside and outside.

[0023] (3) In the present invention, through the design of the detection operation device, it is possible to perform separate detection operations on 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

[0024] Figure 1 is a three-dimensional structure schematic diagram of the whole of the present invention;

[0025] Figure 2 is of the present invention Figure 1 a partial enlarged structure schematic diagram of part A therein;

[0026] Figure 3 is of the present invention Figure 1 a partial enlarged structure schematic diagram of part B therein;

[0027] Figure 4 is a three-dimensional structure schematic diagram of the cooperation of the moving frame, adjusting frame and crescent ring frame, etc. of the present invention;

[0028] Figure 5 is of the present invention Figure 4 a partial enlarged structure schematic diagram of part C therein;

[0029] Figure 6 is a three-dimensional structure schematic diagram of the partial section of the cooperation of the main body frame, lifting frame and lifting ring, etc. of the present invention;

[0030] Figure 7 is of the present invention Figure 6 a partial enlarged structure schematic diagram of part D therein;

[0031] Figure 8 is a disassembled three-dimensional structure schematic diagram of the cooperation of the sampling cylinder, lifting cylinder and sector plate, etc. of the present invention;

[0032] Figure 9 is a three-dimensional structure schematic diagram of the cooperation of the crescent ring frame and the toothed ring of the present invention;

[0033] Figure 10 is a three-dimensional structure schematic diagram of the cooperation of the adjusting frame, crescent ring frame and driven bevel gear, etc. of the present invention;

[0034] Figure 11 is a bottom-up three-dimensional structure schematic diagram of the cooperation of the adjusting frame, crescent ring frame and driven bevel gear, etc. of the present invention;

[0035] Figure 12Schematic diagram of the exploded three-dimensional structure of the clamping arc rod, screw rod, drive rod, etc. in cooperation with the present invention;

[0036] Figure 13 Schematic diagram of the overall three-dimensional structure of the present invention from a bottom view;

[0037] Figure 14 Schematic diagram of the exploded bottom three-dimensional structure of the sampling cylinder, lifting cylinder, sector plate, etc. in cooperation with the present invention;

[0038] Figure 15 Schematic diagram of the three-dimensional structure of the lifting ring, rotating shaft, detection mounting plate, etc. in cooperation with the present invention;

[0039] Figure 16 Schematic diagram of the bottom three-dimensional structure of the lifting ring, rotating shaft, detection mounting plate, etc. in cooperation with the present invention.

[0040] In the figure: 1. Exhaust gas concentration detector; 2. Sampling cylinder; 3. Sector notch; 4. Lifting cylinder; 5. Sector plate; 6. Return spring; 7. Clamping drive shaft; 8. Main body frame; 9. Lifting frame; 10. Electric adjusting rod; 11. Rotating table; 12. Lifting ring; 13. Jacking spring; 14. Contact reaction detector; 15. Installation cavity; 16. Rotating shaft; 17. Detection mounting plate; 18. Linkage gear; 19. Driving rack; 20. Transmission rack; 21. Transmission gear; 22. First stepped opening; 23. Second stepped opening; 24. Moving frame; 25. Semi-enclosed groove; 26. Electric adjustment rod; 27. Active rod; 28. Auxiliary rod; 29. Adjusting frame; 30. First servo motor; 31. Crescent ring frame; 32. Ring track; 33. Tooth ring; 34. Driving gear; 35. Clamping arc rod; 36. Conductor column; 37. Screw rod; 38. Screw wire; 39. Permanent magnet; 40. Vertical cylinder; 41. Drive rod; 42. Second servo motor; 43. Synchronous shaft; 44. Driven bevel gear; 45. Driving bevel gear; 46. Installation opening; 47. Clamping round head; 48. Extended auxiliary clamping rod; 49. Limit rod. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] Embodiment, please refer to Figures 1-16, An exhaust gas concentration detection mechanism and device, including multiple exhaust gas concentration detectors 1, further including a detection sampling mechanism and a detection operation device. The detection sampling mechanism includes a sampling cylinder 2. Multiple fan-shaped notches 3 are provided at the bottom end of the sampling cylinder 2. A lifting cylinder 4 is slidably connected outside the sampling cylinder 2. Multiple fan-shaped plates 5 are arranged inside the lifting cylinder 4. The multiple fan-shaped plates 5 respectively match the multiple fan-shaped notches 3. Multiple reset springs 6 are fixedly connected to the multiple fan-shaped plates 5. The multiple reset springs 6 are all fixedly connected inside the sampling cylinder 2. The top end of the sampling cylinder 2 is fixedly connected with a clamping drive shaft 7. Through the design of the detection sampling mechanism, a sampling functional unit in this exhaust gas concentration detection mechanism and device is formed, which is convenient for sampling the exhaust gas in the space to be detected. 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. The detection operation device includes a main body frame 8. A lifting frame 9 is slidably connected inside the main body frame 8. The bottom end of the lifting frame 9 is connected with an electric adjusting rod 10. The electric adjusting rod 10 is hinged inside the main body frame 8. A rotating table 11 is rotatably connected to the lifting frame 9. A lifting ring 12 is slidably connected to the rotating table 11. Multiple jacking springs 13 are fixedly connected to the bottom end of the lifting ring 12. The multiple jacking springs 13 are all fixedly connected inside the rotating table 11. Multiple exhaust gas concentration detectors 1 are all installed inside the rotating table 11. Multiple contact reaction detectors 14 are installed inside the rotating table 11. Multiple installation cavities 15 are provided at the top end of the rotating table 11. Multiple rotating shafts 16 are rotatably connected inside the multiple installation cavities 15. Multiple detection mounting plates 17 are fixedly connected to the multiple rotating shafts 16. Multiple exhaust gas concentration detectors 1 are respectively installed at one end of the multiple detection mounting plates 17. Multiple contact reaction detectors 14 are respectively installed at the other end of the multiple detection mounting plates 17. Multiple linkage gears 18 are rotatably connected inside the rotating table 11. Multiple drive racks 19 and transmission racks 20 are engaged with the multiple linkage gears 18. Multiple drive racks 19 are all fixedly connected to the lifting ring 12. Multiple transmission racks 20 are all slidably connected inside the rotating table 11. Multiple transmission racks 20 are all engaged with transmission gears 21. Multiple transmission gears 21 are respectively fixedly connected to the multiple rotating shafts 16. The distances between the multiple installation cavities 15 from the axis of the rotating table 11 gradually increase in a gradient state. The multiple rotating shafts 16 are of a gradient structure with different lengths. The multiple fan-shaped plates 5 are all made of light-transmitting glass. The top end of the lifting ring 12 is provided with a first-level step opening 22 and a second-level step opening 23. The first-level step opening 22 and the second-level step opening 23 respectively match the lifting cylinder 4 and the sampling cylinder 2. Through the design of the detection operation device, separate detection operations can be performed on 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.

[0043] It should be further noted that a hoisting structure is installed on the main body frame 8, and the hoisting structure is matched with the clamping drive shaft 7. The hoisting structure includes a moving frame 24. A semi-enclosed groove 25 is formed on the main body frame 8. The moving frame 24 is slidably connected in the semi-enclosed groove 25. The main body 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 drive the position adjustment of the moving frame 24 relative to the main body frame 8. Two driving rods 27 and two auxiliary rods 28 are rotatably connected to the moving frame 24. And a synchronous drive structure is installed on the moving frame 24. The synchronous drive structure is used for the synchronous rotation drive and control of the two driving rods 27. An adjustment frame 29 is rotatably connected between the two driving rods 27. Both of the two auxiliary rods 28 are rotatably connected to the adjustment frame 29. A rotating clamping frame is rotatably connected to the adjustment frame 29. The rotating clamping frame is used for clamping and positioning the drive shaft 7. And two first servo motors 30 are installed on the adjustment frame 29. Both of the two first servo motors 30 are used for driving the rotation of the rotating clamping frame. The rotating clamping frame includes a crescent ring frame 31. A ring track 32 is fixedly connected inside the adjustment frame 29. The crescent ring frame 31 is rotatably connected in the ring track 32. And a toothed ring 33 is fixedly connected to the crescent ring frame 31. Driving gears 34 are installed on the output shafts of the two first servo motors 30. Both of the two driving gears 34 are meshed with the toothed ring 33. Two mounting openings 46 are provided on the adjustment frame 29. The two driving gears 34 are respectively located in the two mounting openings 46. A first mounting groove, a second mounting groove and a third mounting groove are arranged inside the crescent ring frame 31. Clamping arc rods 35 are rotatably connected in the first mounting groove, the second mounting groove and the third mounting groove respectively. The clamping drive shaft 7 is matched with the clamping arc rods 35. Three magnetic force structures are arranged inside the crescent ring frame 31. The three magnetic force structures are respectively used for driving the rotation of the three clamping arc rods 35. The three magnetic force structures all include conductor columns 36 and screw rods 37. Three mounting vertical grooves are arranged on the crescent ring frame 31. The three conductor columns 36 are respectively arranged in the three mounting vertical grooves. Spiral wires 38 are wound around the three conductor columns 36. The three screw rods 37 are respectively slidably connected in the three mounting vertical grooves. Permanent magnets 39 are fixedly connected to the three screw rods 37. By energizing the spiral wires 38 and controlling the direction and strength of the current in the multiple spiral wires 38, the control of the electromagnetic field formed by the cooperation of the spiral wires 38 and the conductor columns 36 can be realized, as well as the control and adjustment of the magnetic force magnitude and magnetic force direction of the electromagnetic field acting on the permanent magnets 39. Vertical openings are arranged on the three clamping arc rods 35. Vertical cylinders 40 are fixedly connected in the three vertical openings. Driving rods 41 are fixedly connected to the three screw rods 37. Spiral grooves matched with the driving rods 41 are arranged in the three vertical cylinders 40. 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. The synchronous shaft 43 is rotatably connected inside the moving frame 24. Both of the two driving rods 27 are fixedly connected to the synchronous shaft 43. 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, it is matched with the detection and sampling mechanism to form grasping and hoisting, and can form rotational drive for the detection and sampling mechanism in the hoisted state, and is matched with the detection and sampling mechanism to make it enter the centrifugal state, so as to facilitate the annular distribution of the exhaust gas inside and outside the detection and sampling mechanism. Clamping round heads 47 are arranged on all three clamping arc rods 35, and extension auxiliary clamping rods 48 are fixedly connected to the bottom ends of the three clamping arc rods 35. Limit rods 49 are fixedly connected to the left and right ends of the moving frame 24, and the two limit rods 49 are respectively matched with the two driving rods 27.,

[0044] The electric adjusting rod 10, the electric adjusting 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 devices well-known to those skilled in the art purchased on the market. In the present invention, we only use them and do not improve their structures and functions. Their setting methods, installation methods and electrical connection methods can be debugged and operated by those skilled in the art as long as they are in accordance with the requirements of their user manuals, and will not be elaborated here.,

[0045] In summary, the working process of this exhaust gas concentration detection mechanism and device is as follows. Before use, first place this exhaust gas concentration detection mechanism and device at the location where it is needed, and connect the electric adjusting rod 10, the electric adjusting rod 26, the first servo motor 30 and the second servo motor 42 to the corresponding control circuits according to the instruction manual. At the same time, install a controller for adjusting the current magnitude and controlling the current direction for the spiral wire 38, and connect the detection signals formed by the exhaust gas concentration detector 1 and the contact reaction detector 14 to the information of the external storage computer. When in use, first form the sampling of the gas in the target space through the structure formed by the sampling cylinder 2 and the lifting cylinder 4. When sampling, overcome the elastic force of the return spring 6 and push the lifting cylinder 4 relative to the sampling cylinder 2 to expose the sector notch 3. After that, the inside and outside of the sampling cylinder 2 are communicated through the sector notch 3 to assist the exhaust gas in the sampling space to enter the sampling cylinder 2. To facilitate the smooth sampling of the sampling cylinder 2, fill the sampling cylinder 2 with liquid in advance before sampling, and then empty the liquid in the sampling cylinder 2 in the sampling space to introduce the exhaust gas in the sampling space for sampling. It should be noted that the filling liquid should be selected from materials that do not react with the exhaust gas and are also difficult to dissolve in the exhaust gas. After sampling is completed, release the auxiliary driving force acting on the lifting cylinder 4, and under the elastic reset action of the return spring 6, the lifting cylinder 4 is reset relative to the sampling cylinder 2, and the sector plate 5 is also reset relative to the sector notch 3 to cover the sector notch 3. In this state, the area enclosed by the sampling cylinder 2, the lifting cylinder 4 and the sector plate 5 is relatively sealed and independent from the outside. Then, through the operation of the hoisting structure, the sampling cylinder 2 is loaded relative to the main frame 8, so that the lifting cylinder 4 corresponds to the lifting ring 12 up and down.,

[0046] Further, place the sampling cylinder 2 to be detected at the front end of the main body frame 8, and then through the coordinated operation of the electric adjusting rod 26 and the second servo motor 42, the position adjustment of the rotating clamping bracket relative to the sampling cylinder 2 is achieved. The electric adjusting rod 26 works to realize the front-back position adjustment of the moving frame 24 relative to the main body frame 8. The second servo motor 42 works to drive the rotation of the synchronous shaft 43 under the meshing drive of the driving bevel gear ring 33 and the driven bevel gear ring 33. The rotation of the synchronous shaft 43 drives the two driving rods 27 to form synchronous movement. The synchronous movement of the two driving rods 27 realizes the height adjustment of the adjustment frame 29. Under the coordinated action of the two auxiliary rods 28, the adjustment frame 29 can adjust its own position during the movement. The rotating clamping bracket will form a synchronous displacement change with the adjustment frame 29 and be aligned with the sampling cylinder 2, so that the clamping drive shaft 7 enters the enclosed area formed by the cooperation of the three clamping arc rods 35. Then, power is supplied to the plurality of spiral wires 38, and the plurality of spiral wires 38 respectively cooperate with the plurality of conductor columns 36 to form a plurality of electromagnetic fields. Through the relative magnetic force action of the plurality of electromagnetic fields and the plurality of permanent magnets 39 respectively, the rotation drive of the three clamping arc rods 35 is achieved. The synchronous rotation of the three clamping arc rods 35 makes the clamping round head 47 contact the clamping drive shaft 7 and form a certain pressing force, so that the relative friction force between the clamping arc rod 35 and the sampling cylinder 2 formed by the pressing force can overcome the self-gravity of the sampling cylinder 2. In this state, when the second servo motor 42 works to raise the adjustment frame 29 relative to the main body frame 8, the synchronous raising of the sampling cylinder 2 can be achieved. The sampling cylinder 2 is raised and its position is moved into the main body frame 8 through the coordinated work of the second servo motor 42 and the electric adjusting rod 26. When the driving rod 27 is rotationally limited by the limiting rod 49, the sampling cylinder 2 just corresponds to the lifting ring 12 up and down. Check the positions of the plurality of sector plates 5 at the bottom of the sampling cylinder 2 and the plurality of mounting cavities 15, so that the plurality of mounting cavities 15 are respectively located in the regions directly below the plurality of sector plates 5. If necessary, rotate the auxiliary rotating table 11 to make the plurality of mounting cavities 15 correspond to the plurality of sector plates 5 up and down respectively. Then, both the second servo motor 42 and the electric adjusting rod 26 enter the stop state, and the electric adjusting rod 10 is started to raise the lifting frame 9 in the main body frame 8 until the lifting ring 12 contacts the lifting cylinder 4 up and down and forms a contact seal between them. At this time, the lifting cylinder 4 is inserted into the first-stage stepped opening 22 and the bottom ring surface of the lifting cylinder 4 forms a pressing contact with the inner bottom surface of the first-stage stepped opening 22.

[0047] Furthermore, then the hoisting structure operates to drive the rotation of the sampling cylinder 2 by clamping the driving shaft 7 until the sampling cylinder 2 enters the detection speed and maintains a uniform operation at the detection speed, so that the collected exhaust gas sample also undergoes a centrifugal effect to form an internal and external flow, presenting an internal and external stratified form. That is, the first servo motor 30 works, and through the cooperation of the two driving gears 34 with the toothed ring 33, the rotation drive of the crescent ring frame 31 is formed. The rotation of the crescent ring frame 31 forms the corresponding drive of the sampling cylinder 2 clamped by the three clamping arc rods 35. After the sampling cylinder 2 rotates, due to the action of rotational centrifugal force, the exhaust gas in the sampling cylinder 2 will form a follow-up rotational movement. Since the densities of different types of exhaust gases are different, the centrifugal forces they bear are also different. Therefore, gas stratification can be finally achieved. Then, multiple exhaust gas concentration detectors 1 and multiple contact reaction detectors 14 respectively perform corresponding detections on the exhaust gases in different rotation orbits. The exhaust gas concentration detector 1 is an instrument that uses a light source to detect gases. Since the lifting cylinder 4 is inserted into the lifting ring 12 and the two are in tight contact with each other, under the action of the relative contact friction force 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 and the multiple sector plates 5 are all in a relatively stationary state of relative motion. Therefore, when the exhaust gas concentration detector 1 performs detection operations, the light emitted passes through the transparent sector plate 5 to detect the exhaust gas in the sampling cylinder 2. For example, the characteristics of infrared rays are used to measure the pollutant concentration in the exhaust gas. The light with the specific wavelength of the measured exhaust gas is absorbed, and the higher the concentration of the exhaust gas, the less the light flux. The contact reaction detector 14 selects the detection principle of chemical reaction formulas. When it performs detection operations, by controlling the operation of the electric adjusting rod 10, the lifting frame 9 is further raised in the main frame 8. At this time, the lifting ring 12 will fall relative to the rotating table 11 against the elastic force of the jacking spring 13. 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. Since the lifting ring 12 will drive the multiple driving racks 19 to fall synchronously when it falls relative to the rotating table 11, the multiple falling driving racks 19 respectively drive the multiple linkage gears 18 to rotate, the multiple linkage gears 18 rotate respectively to drive the multiple transmission gears 21 to rotate, the multiple transmission gears 21 rotate respectively to drive the multiple rotating shafts 16 to rotate, and the multiple rotating shafts 16 rotate respectively to drive the multiple detection mounting plates 17 to flip, so that the contact reaction detector 14 originally at the bottom of the detection mounting plate 17 is adjusted to the upper part and enters the sector notch 3, so that the contact reaction detector 14 contacts the exhaust gas to be detected in the sampling cylinder 2, realizes the contact between the contact reaction detector 14 and the exhaust gas and generates corresponding reactions, and finally determines the component detection of the exhaust gas according to the reaction situation in the contact reaction detector 14. After the detection is completed, first control the sampling cylinder 2 to decelerate until it stops rotating, and then make the rotating table 11 fall and reset relative to the sampling cylinder 2 by operating the electric adjusting 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. However, the contact reaction detector 14 is a device that comes into contact with the exhaust gas and forms a reaction, so it needs to be replaced when re-detecting after the detection is completed. When replacing the contact reaction detector 14, only the upper part of the rotating table 11 needs to be kept open, and then the lifting ring 12 is manually pressed down relative to the rotating table 11 to realize the rotational adjustment of the detection mounting plate 17, so that the contact reaction detector 14 is exposed and can be replaced. And under normal circumstances, the contact reaction detector 14 is located in the space formed by the combination of the detection mounting plate 17 and the installation cavity 15, so the relatively independent space also helps to protect the contact reaction detector 14.

[0048] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas concentration detection device, comprising a plurality of exhaust gas concentration detectors (1), characterized in that: The detection sampling mechanism also includes a detection sampling mechanism and a detection operation device. The detection sampling mechanism includes a sampling tube (2). The bottom end of the sampling tube (2) is provided with a plurality of fan-shaped notches (3). The sampling tube (2) is slidably connected to a lifting tube (4) outside. A plurality of fan-shaped plates (5) are provided inside the lifting tube (4). The plurality of fan-shaped plates (5) are matched with the plurality of fan-shaped notches (3) respectively. The plurality of fan-shaped plates (5) are fixedly connected to a reset spring (6). The plurality of reset springs (6) are fixedly connected inside the sampling tube (2). The top end of the sampling tube (2) is fixedly connected to a clamping drive shaft (7). The detection operation device includes a main frame (8). A hoisting structure is installed on the main frame (8). The hoisting structure is matched with the clamping drive shaft (7). The hoisting structure realizes the rotational drive of the sampling tube (2) through the clamping drive shaft (7) until the sampling tube (2) enters the detection speed and maintains the detection speed. The measuring speed runs at a uniform speed, so that the collected exhaust gas samples are also subjected to the centrifugal effect to form internal and external flows, presenting an internal and external layered form. 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). The electric adjustment rod (10) is hinged in the main frame (8). A rotating table (11) is rotatably connected to the lifting frame (9). 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). 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). A plurality of contact reaction detectors (14) are installed in the rotating table (11). The plurality of exhaust gas concentration detectors (1) and the plurality of contact reaction detectors (14) respectively form corresponding detections for different rotating surrounding layers.

2. The exhaust gas concentration detection 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. The exhaust gas concentration detection 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 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 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 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. The exhaust gas concentration detection 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 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 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 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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