Waste gas online monitoring equipment convenient to calibrate

Abstract

The invention discloses waste gas on-line monitoring equipment convenient to calibrate, and belongs to the technical field of waste gas monitoring. A detection assembly is mounted in the box body; the top in the box body is connected with a follow-up maintenance plugging assembly; the through hole in the bottom of the box body is connected with an adjustable air inlet assembly which is used for air inlet and is adjustable in air inlet direction; the adjustable air inlet assembly is connected with a cleaning assembly for cleaning dust of the lens at the detection end of the detection assembly; the side wall of the box body is connected with a control assembly used for controlling the waste gas online monitoring equipment and receiving and transmitting wireless signals. The control assembly is electrically connected with the adjusting type gas inlet assembly, the cleaning assembly and the detection assembly. In this way, the detection assembly can be subjected to self-calibration and dust removal treatment, and the detection accuracy and precision of the detection assembly are guaranteed; and meanwhile, when the detection assembly is overhauled, gas in the smoke exhaust pipeline can be prevented from directly overflowing.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas monitoring, and in particular to an online waste gas monitoring device which is convenient for calibration. Background Art

[0002] Waste gas emissions refer to pollutants in waste gas discharged from chimneys or exhaust pipe holes. It is a serious source of pollution to the atmospheric environment. Various waste gases emitted during combustion and production processes of industrial enterprises need to be monitored by waste gas online monitoring equipment before they are discharged.

[0003] The industrial dust concentration monitoring device of Chinese patent CN212254987U has a simple structure and can be quickly installed on the pipeline monitor to improve the convenience of use; it includes a pipeline and a monitor body, a monitoring hole is arranged at the top of the pipeline, and an annular protrusion is arranged at the monitoring hole. The monitor body includes a sensor and an electrostatic probe installed at the bottom of the sensor, and a plastic shell is arranged on the outside of the electrostatic probe, and also includes a fan-shaped plate, a spring, a connecting rod and a baffle. A slide groove is arranged at the left end of the inner side of the annular protrusion, and a connecting hole connected to the outer side wall of the annular protrusion is arranged in the central area of ​​the left side wall of the slide groove. The bottom of the plastic shell passes through the annular protrusion, and the outer side wall of the plastic shell is provided with a locking groove. The two ends of the fan-shaped plate are respectively in the locking groove and the slide groove, and one end of the connecting rod passes through the connecting hole and the spring and is then connected to the fan-shaped plate, and the two ends of the spring are respectively in close contact with the slide groove and the fan-shaped plate.

[0004] The detection end of the above structure is located in the pipeline. The equipment needs to be removed from the pipeline for calibration and cleaning, which is not conducive to calibration and cleaning. At the same time, in order to prevent gas overflow in the pipeline during removal, other equipment is required to block the equipment installation hole, which is not conducive to actual operation.

[0005] Based on this, the present invention designs an exhaust gas online monitoring device that is easy to calibrate to solve the above problems. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides an online exhaust gas monitoring device that is easy to calibrate.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an online exhaust gas monitoring device that is convenient for calibration, comprising a box:

[0008] An air outlet pipe for air outlet is connected to the through hole at the top of the box body;

[0009] The box is equipped with a detection component for exhaust gas particulate matter detection;

[0010] A follow-up inspection and plugging assembly is connected to the top of the box body for plugging the through hole below the air outlet pipe when the detection assembly is inspected. When the detection end of the detection assembly is installed in the box body, the detection assembly will push the follow-up inspection and plugging assembly to the open state. When the detection assembly is separated from the box body, the follow-up inspection and plugging assembly returns to the closed state to plug the through hole below the air outlet pipe.

[0011] The through hole at the bottom of the box is connected with an adjustable air intake component for air intake and the air intake direction is adjustable. One set of air intake ends of the adjustable air intake component is connected to the smoke exhaust pipe, and the other set of air intake ends of the adjustable air intake component is connected to the air. When the detection component is normally detected, the adjustable air intake component draws the gas in the smoke exhaust pipe into the box through one set of air intake ends. When the detection component is calibrated, the adjustable air intake component draws and filters the air into the box through the other set of air intake ends.

[0012] The adjustable air inlet component is connected with a cleaning component for cleaning dust from the lens at the detection end of the detection component. When the detection component is normally detected, the air outlet of the cleaning component is misaligned with the detection end of the detection component, and the cleaning component does not adjust the wind direction in the adjustable air inlet component. When the lens at the detection end of the detection component is cleaned, the air outlet of the cleaning component is aligned with the lens at the detection end of the detection component, and the cleaning component adjusts the wind direction of the adjustable air inlet component to the cleaning component.

[0013] The side wall of the box is connected with a control component for controlling the exhaust gas online monitoring equipment and receiving and sending wireless signals. The control component is electrically connected with the adjustable air intake component, the cleaning component and the detection component.

[0014] Furthermore, the detection component includes a smoke monitor, a mounting side panel and a transverse hole. A transverse hole is opened on the side wall of the box, and the mounting side panel is inserted into the transverse hole. The mounting side panel is fixedly connected to the box through a mounting fixture. A smoke monitor for particulate matter detection is installed in the mounting hole of the mounting side panel. The detection end of the smoke monitor is located in the box, and the follow-up maintenance sealing component is connected to the smoke monitor.

[0015] Furthermore, the follow-up maintenance sealing assembly includes a push plate and a self-resetting sealing assembly. The push plate is fixedly connected to the inner wall of the mounting side plate, the automatic resetting sealing assembly is movably connected to the push plate, the automatic resetting sealing assembly is connected to the top of the box body, and the automatic resetting sealing assembly moves at the through hole below the outlet pipe.

[0016] Furthermore, the self-resetting sealing assembly includes a spring, a baffle and a guide rod. The inner wall of the box is symmetrically fixedly connected with the guide rod, the guide rod is slidably connected with the baffle, a spring is fixedly connected between the baffle and the inner wall of the box, the spring is sleeved on the guide rod, and the top of the baffle is slidably connected to the top of the box.

[0017] Furthermore, when the spring is in the initial state, the baffle is located directly below the through hole below the air outlet pipe.

[0018] Furthermore, the adjustable air intake assembly includes a first air intake pipe, a second three-way valve, a pumping assembly and a filtered air intake assembly, the two air intake ends of the second three-way valve are respectively connected to the first air intake pipe and the filtered air intake assembly, the air outlet end of the second three-way valve is connected to the air intake end of the pumping assembly, the air outlet end of the pumping assembly is connected to the bottom of the box body and communicates with the box body, and the cleaning assembly is connected to the pumping assembly;

[0019] The first air inlet pipe is fixedly connected to the smoke exhaust pipe.

[0020] Furthermore, the filtered air intake assembly includes a second intake pipe, a cover plate, filter cotton and air holes. The second intake pipe is fixedly installed at the intake end of the second three-way valve. Filter cotton for dust filtering is inserted into the second intake pipe. The bottom of the second intake pipe is threadedly connected to a cover plate, and an air hole is opened at the bottom of the cover plate.

[0021] Furthermore, the pumping component includes a third pipe, a mounting cylinder, a mounting cross frame and a fan. The bottom of the mounting cylinder is fixedly connected to the air outlet end of the second three-way valve, a mounting cross frame is installed in the mounting cylinder, a fan is installed in the mounting cross frame, a third pipe is fixedly connected to the top of the mounting cylinder, the third pipe is connected to the bottom of the box body and communicates with the box body, and the third pipe is connected to the cleaning component.

[0022] Furthermore, the cleaning component includes an adjustable air intake component, an azimuth adjustment component and a symmetrical jet component. The adjustable air intake component is connected to the third pipe, the adjustable air intake component is connected to the azimuth adjustment component, the azimuth adjustment component is connected to the symmetrical jet component, when the adjustable air intake component is opened toward the box body, the gas in the third pipe enters the box body, and when the adjustable air intake component is opened toward the azimuth adjustment component, the gas in the third pipe enters the azimuth adjustment component.

[0023] Furthermore, the regulating air intake assembly includes a three-way valve and a first pipeline, the three-way valve is fixedly mounted on the third pipeline, one set of output ends of the three-way valve is fixedly connected to the end of the first pipeline outside the box, another set of output ends of the three-way valve is arranged toward the third pipeline, and the air intake end of the three-way valve is arranged toward the mounting cylinder;

[0024] The azimuth adjustment component includes a motor, a mounting straight plate, a first gear ring, an L-shaped pipe, a second gear ring and a sealed bearing. The mounting straight plate is fixedly connected to the inner wall of the box body, a motor is installed at the lower end of the mounting straight plate, a driving end of the motor is fixedly connected to the first gear ring, the first gear ring is meshingly connected to the second gear ring, a transverse portion of the L-shaped pipe is installed in a mounting hole of the second gear ring, an air inlet end of the transverse portion of the L-shaped pipe is rotatably connected to an end of the first pipe located in the box body through a sealed bearing, the sealed bearing, the second gear ring and the L-shaped pipe are arranged in parallel with the detection end of the smoke monitor, and the L-shaped pipe is connected to a symmetrical jet assembly;

[0025] The symmetrical jet assembly comprises a jet pipe and a tee pipe, the air inlet end of the tee pipe is fixedly connected to the air outlet end of the L-shaped pipe, and the air outlet ends of the tee pipe are fixedly connected with the jet pipe.

[0026] Beneficial Effects

[0027] The present invention can perform self-calibration and dust removal on the detection component, thereby ensuring the detection accuracy and precision of the detection component; at the same time, direct overflow of gas in the smoke exhaust pipe can be avoided when the detection component is under maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 The present invention is a three-dimensional exhaust gas online monitoring device that is easy to calibrate Figure 1 ;

[0030] Figure 2 A front view of an online exhaust gas monitoring device that is convenient for calibration according to the present invention;

[0031] Figure 3 It is a left view of an online exhaust gas monitoring device that is convenient for calibration according to the present invention;

[0032] Figure 4 The present invention is a three-dimensional exhaust gas online monitoring device that is easy to calibrate Figure 2 ;

[0033] Figure 5 The present invention is a three-dimensional exhaust gas online monitoring device that is easy to calibrate Figure 3 ;

[0034] Figure 6 For along Figure 3 BB direction cross-sectional view;

[0035] Figure 7 For along Figure 3 BB direction cross section Figure 2 ;

[0036] Figure 8 For along Figure 2 AA direction cross-sectional view;

[0037] Fig. 9 for Figure 6 A magnified view of the structure at C;

[0038] Fig.10 A schematic diagram of the connection between an online exhaust gas monitoring device that is easy to calibrate and a flue gas exhaust duct.

[0039] The numbers in the figure represent:

[0040] 1. Box body 2. Control assembly 3. Cleaning assembly 31. Three-way valve 32. First pipeline 33. Motor 34. Install straight plate 35. First gear ring 36. Jet pipe 37. Three-way pipe 38. L-shaped pipeline 39. Second gear ring 310. Sealed bearing 4. Adjustable air intake assembly 41. First air intake pipe 42. Second air intake pipe 43. Cover plate 44. Second three-way valve 45. Third pipeline 46. Install cylinder 47. Filter cotton 48. Air hole 49. Install cross frame 410. Fan 5. Detection assembly 51. Smoke monitor 511. Lens 52. Install side plate 53. Cross hole 6. Exhaust pipe 7. Follow-up maintenance plugging assembly 71. Spring 72. Baffle 73. Guide rod 74. Push plate DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0042] The present invention will be further described below in conjunction with the embodiments.

[0043] Embodiment 1

[0044] Please refer to the instruction manual Figure 1-10 , an exhaust gas online monitoring device that is convenient for calibration, comprising a box 1:

[0045] The through hole at the top of the box body 1 is connected with an air outlet pipe 6 for air outlet;

[0046] The box 1 is equipped with a detection component 5 for detecting exhaust gas particles;

[0047] A follow-up maintenance and plugging component 7 is connected to the top of the box body 1 for plugging the through hole below the air outlet pipe 6 when the detection component 5 is inspected. When the detection end of the detection component 5 is installed in the box body 1, the detection component 5 will be pushed to the open state of the follow-up maintenance and plugging component 7. When the detection component 5 is separated from the box body 1, the follow-up maintenance and plugging component 7 will return to the closed state to plug the through hole below the air outlet pipe 6.

[0048] An adjustable air intake component 4 for air intake and adjustable air intake direction is connected to the through hole at the bottom of the box body 1. One group of air intake ends of the adjustable air intake component 4 is connected to the smoke exhaust pipe, and the other group of air intake ends of the adjustable air intake component 4 is connected to the air. When the detection component 5 is normally detecting, the adjustable air intake component 4 draws the gas in the smoke exhaust pipe into the box body 1 through one group of air intake ends. When the detection component 5 is calibrated, the adjustable air intake component 4 draws and filters the air through the other group of air intake ends and enters the box body 1.

[0049] The adjustable air intake component 4 is connected to a cleaning component 3 for cleaning the lens 511 at the detection end of the detection component 5. When the detection component 5 is detecting normally, the air outlet end of the cleaning component 3 is offset from the detection end of the detection component 5, and the cleaning component 3 does not adjust the wind direction in the adjustable air intake component 4. When the lens 511 at the detection end of the detection component 5 is cleaning, the air outlet end of the cleaning component 3 is aligned with the lens 511 at the detection end of the detection component 5, and the cleaning component 3 adjusts the wind direction of the adjustable air intake component 4 to the inside of the cleaning component 3.

[0050] A control component 2 for controlling the exhaust gas online monitoring equipment and receiving and sending wireless signals is connected to the side wall of the box body 1 . The control component 2 is electrically connected to the adjustable air intake component 4 , the cleaning component 3 and the detection component 5 .

[0051] When the detection component 5 needs to be repaired, the detection component 5 is separated from the box body 1. When the detection component 5 is separated from the box body 1, the follow-up maintenance sealing component 7 is restored to a closed state to block the through hole below the outlet pipe 6, which can prevent the gas in the smoke exhaust pipe from entering the box body 1 through the outlet pipe 6, thereby preventing direct overflow; when the detection component 5 is installed in the box body 1, the detection component 5 will be pushed to the open state of the follow-up maintenance sealing component 7, and the gas in the box body 1 can enter the outlet pipe 6.

[0052] When the detection component 5 is detecting, the air inlet end of the adjustable air inlet component 4 connected to the smoke exhaust duct is opened, and the air inlet end of the adjustable air inlet component 4 connected to the air is closed, the air outlet end of the cleaning component 3 and the detection end of the detection component 5 are staggered, and the adjustable air inlet component 4 draws the gas in the smoke exhaust duct into the box body 1, and the detection component 5 performs particulate matter detection on the gas, and after detection, the gas returns to the smoke exhaust duct through the outlet pipe 6.

[0053] When the detection component 5 is calibrated, the air inlet end of the adjustable air inlet component 4 connected to the smoke exhaust duct is closed, and the air inlet end of the adjustable air inlet component 4 connected to the air is closed. The air outlet end of the cleaning component 3 is adjusted to be directly opposite to the detection end of the detection component 5. The adjustable air inlet component 4 draws air and filters it. The filtered gas enters the box body 1, and the detection component 5 performs self-calibration through the filtered gas.

[0054] When the detection component 5 is cleaned, the air inlet end of the adjustable air inlet component 4 connected to the smoke exhaust duct is closed, and the air inlet end of the adjustable air inlet component 4 connected to the air is closed. The air outlet end of the cleaning component 3 is adjusted to be directly opposite to the detection end lens 511 of the detection component 5. The adjustable air inlet component 4 draws air and filters it. The filtered gas enters the cleaning component 3 and is then sprayed from the cleaning component 3 to the detection end lens 511 of the detection component 5, so that the dust on the detection end lens 511 of the detection component 5 is blown away for dust removal.

[0055] To sum up, compared with the existing through-penetration analyzer directly installed on the flue gas exhaust duct, the present application can perform self-calibration and dust removal on the detection component 5, ensuring the detection accuracy and precision of the detection component 5; at the same time, when the detection component 5 is inspected and repaired, the gas in the flue gas exhaust duct can be prevented from directly overflowing.

[0056] The detection component 5 includes a smoke monitor 51, a mounting side plate 52 and a transverse hole 53. The side wall of the box body 1 is provided with a transverse hole 53, and the mounting side plate 52 is inserted into the transverse hole 53. The mounting side plate 52 is fixedly connected to the box body 1 through a mounting fixture. The smoke monitor 51 for particulate matter detection is installed in the mounting hole of the mounting side plate 52. The detection end of the smoke monitor 51 is located in the box body 1, and the follow-up maintenance plugging component 7 is connected to the smoke monitor 51.

[0057] The smoke monitor 51 uses the smoke monitor SBF600 produced by Shanghai Beifen Technology Co., Ltd., and two groups of lenses 511 are arranged at the detection end of the smoke monitor 51.

[0058] The mounting side plate 52 of the detection assembly 5 is inserted into the horizontal hole 53 and connected to the box body 1 through the mounting fixture, so that the smoke monitor 51 can be quickly installed.

[0059] The follow-up maintenance sealing assembly 7 includes a push plate 74 and a self-resetting sealing assembly. The push plate 74 is fixedly connected to the inner wall of the mounting side plate 52, the automatic resetting sealing assembly is movably connected to the push plate 74, the automatic resetting sealing assembly is connected to the top of the box body 1, and the automatic resetting sealing assembly moves at the through hole below the outlet pipe 6.

[0060] The self-resetting sealing assembly includes a spring 71, a baffle 72 and a guide rod 73. The inner wall of the box body 1 is symmetrically fixedly connected with the guide rod 73, and the guide rod 73 is slidably connected with the baffle 72. A spring 71 is fixedly connected between the baffle 72 and the inner wall of the box body 1, and the spring 71 is sleeved on the guide rod 73. The top of the baffle 72 is slidably connected to the top of the box body 1.

[0061] When the spring 71 is in the initial state, the baffle 72 is located directly below the through hole below the air outlet pipe 6;

[0062] When the smoke monitor 51 needs to be repaired, the mounting side plate 52 is separated from the box body 1. When the mounting side plate 52 is separated from the box body 1, the mounting side plate 52 drives the push plate 74 to move, and the push plate 74 is separated from the baffle 72, and the restoring force of the spring 71 pushes the baffle 72 along the guide rod 73 to move to the bottom of the through hole under the exhaust pipe 6, thereby blocking the through hole under the exhaust pipe 6, thereby preventing the gas in the smoke exhaust pipe from entering the box body 1 through the exhaust pipe 6 to avoid direct overflow; when the mounting side plate 52 is installed in the box body 1, the mounting side plate 52 drives the push plate 74 to move, and the push plate 74 contacts the baffle 72 at the through hole under the exhaust pipe 6, pushing the baffle 72 to move to the through hole under the exhaust pipe 6, and pushing it to the open state of the follow-up maintenance plugging assembly 7, and the spring 71 is in a compressed state, the exhaust pipe 6 is connected to the box body 1, and the gas in the box body 1 can enter the exhaust pipe 6.

[0063] The adjustable air intake assembly 4 includes a first air intake pipe 41, a second three-way valve 44, a pumping assembly and a filtered air intake assembly. The two air intake ends of the second three-way valve 44 are respectively connected to the first air intake pipe 41 and the filtered air intake assembly. The air outlet end of the second three-way valve 44 is connected to the air intake end of the pumping assembly. The air outlet end of the pumping assembly is connected to the bottom of the box body 1 and communicates with the box body 1. The cleaning assembly 3 is connected to the pumping assembly.

[0064] The first air inlet pipe 41 is fixedly connected to the smoke exhaust pipe;

[0065] The filtered air intake assembly includes a second intake pipe 42, a cover plate 43, filter cotton 47 and an air hole 48. The second intake pipe 42 is fixedly installed at the intake end of the second three-way valve 44. The filter cotton 47 for dust filtering is inserted into the second intake pipe 42. The bottom of the second intake pipe 42 is threadedly connected with the cover plate 43, and the bottom of the cover plate 43 is provided with an air hole 48.

[0066] The pumping assembly includes a third pipe 45, a mounting cylinder 46, a mounting cross frame 49 and a fan 410. The lower part of the mounting cylinder 46 is fixedly connected to the air outlet end of the second three-way valve 44. The mounting cross frame 49 is installed in the mounting cylinder 46. The fan 410 is installed in the mounting cross frame 49. The top of the mounting cylinder 46 is fixedly connected to the third pipe 45. The third pipe 45 is connected to the bottom of the box body 1 and communicates with the box body 1. The third pipe 45 is connected to the cleaning assembly 3;

[0067] When the detection component 5 is detecting, the air inlet end of the second three-way valve 44 connected to the smoke exhaust pipe is opened, and the air inlet end of the second three-way valve 44 connected to the air is closed, the air outlet end of the cleaning component 3 and the detection end of the detection component 5 are staggered, and the fan 410 of the pumping component of the adjustable air intake component 4 pumps the gas in the smoke exhaust pipe into the first air intake pipe 41, the installation tube 46 and the third pipe 45, and then into the box body 1, and the smoke monitor 51 performs particle detection on the gas, and after the detection, the gas returns to the smoke exhaust pipe through the air outlet pipe 6;

[0068] When the detection component 5 is calibrated, the air inlet end of the second three-way valve 44 connected to the smoke exhaust pipe is closed, and the air inlet end of the second three-way valve 44 connected to the air is opened, and the air outlet end of the cleaning component 3 is adjusted to be directly opposite to the detection end of the detection component 5. The fan 410 draws air to flow, and the air enters the cover plate 43 through the air holes 48 of the filtered air intake component, and is filtered by the filter cotton 47. The filtered gas enters the box body 1 through the installation tube 46 and the third pipe 45. The smoke monitor 51 detects the filtered gas and compares the detection result with the filtering data of the filter cotton 47. If they are the same, the smoke monitor 51 is qualified, and if they are different, the smoke monitor 51 is unqualified, thereby achieving self-calibration.

[0069] The cleaning component 3 includes an air intake adjustment component, an orientation adjustment component and a symmetrical jet injection component. The air intake adjustment component is connected to the third pipe 45. The air intake adjustment component is connected to the orientation adjustment component. The orientation adjustment component is connected to the symmetrical jet injection component. When the air intake adjustment component is opened toward the housing 1, the gas in the third pipe 45 enters the housing 1. When the air intake adjustment component is opened toward the orientation adjustment component, the gas in the third pipe 45 enters the orientation adjustment component.

[0070] The regulating air intake assembly includes a three-way valve 31 and a first pipeline 32. The three-way valve 31 is fixedly mounted on the third pipeline 45. One set of output ends of the three-way valve 31 is fixedly connected to the end of the first pipeline 32 outside the box 1. Another set of output ends of the three-way valve 31 is arranged toward the third pipeline 45. The air intake end of the three-way valve 31 is arranged toward the mounting cylinder 46.

[0071] The azimuth adjustment component includes a motor 33, a mounting straight plate 34, a first gear ring 35, an L-shaped pipe 38, a second gear ring 39 and a sealing bearing 310. The mounting straight plate 34 is fixedly connected to the inner wall of the housing 1. The motor 33 is installed at the lower end of the mounting straight plate 34. The driving end of the motor 33 is fixedly connected to the first gear ring 35. The first gear ring 35 is meshingly connected to the second gear ring 39. The transverse part of the L-shaped pipe 38 is installed in the mounting hole of the second gear ring 39. The transverse part of the L-shaped pipe 38 is rotatably connected to the end of the first pipe 32 located in the housing 1 through the sealing bearing 310. The sealing bearing 310, the second gear ring 39 and the L-shaped pipe 38 are arranged in parallel with the detection end of the smoke monitor 51. The L-shaped pipe 38 is connected to a symmetrical jet assembly.

[0072] The symmetrical jet assembly includes a jet pipe 36 and a tee pipe 37. The air inlet end of the tee pipe 37 is fixedly connected to the air outlet end of the L-shaped pipe 38. The air outlet ends of the tee pipe 37 are fixedly connected to the jet pipe 36.

[0073] When the detection component 5 is detecting, the motor 33 of the cleaning component 3 drives the first gear ring 35 to rotate, the first gear ring 35 drives the second gear ring 39 to rotate, the second gear ring 39 drives the L-shaped pipe 38 to rotate along the sealing bearing 310, the L-shaped pipe 38 drives the jet pipe 36 to rotate, the jet pipe 36 is adjusted to be misaligned with the detection end lens 511 of the detection component 5, and at the same time, the three-way valve 31 conducts the gas of the installation cylinder 46 to the box body 1;

[0074] When the detection component 5 is calibrated, the air inlet end of the second three-way valve 44 connected to the smoke exhaust pipe is closed, and the air inlet end of the second three-way valve 44 connected to the air is opened, the motor 33 drives the first gear ring 35 to rotate, the first gear ring 35 drives the second gear ring 39 to rotate, the second gear ring 39 drives the L-shaped pipe 38 to rotate along the sealing bearing 310, the L-shaped pipe 38 drives the jet pipe 36 to rotate, the jet pipe 36 is adjusted to be aligned with the detection end lens 511 of the detection component 5, and the three-way valve 31 conducts the gas in the installation cylinder 46 To the first pipe 32, the fan 410 draws the air to flow, and the air enters the cover plate 43 through the air hole 48 of the filtered air intake assembly, and is filtered by the filter cotton 47. The filtered gas enters the first pipe 32 through the installation tube 46 and the third pipe 45, and then enters the jet pipe 36 through the L-shaped pipe 38, and is then sprayed from the cleaning component 3 to the detection end lens 511 of the smoke monitor 51, so that the dust on the detection end lens 511 of the smoke monitor 51 is blown away for dust removal, so as to prevent the dust from affecting the detection result.

[0075] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An online exhaust gas monitoring device that is easy to calibrate, comprising a housing (1), characterized in that: An air outlet pipe (6) for air outlet is connected to the through hole at the top of the box body (1); The box body (1) is equipped with a detection component (5) for detecting exhaust gas particulate matter; A follow-up maintenance plugging component (7) is connected to the top of the box body (1) and is used to plug the through hole below the outlet pipe (6) when the detection component (5) is inspected. When the detection end of the detection component (5) is installed in the box body (1), the detection component (5) will push the follow-up maintenance plugging component (7) to an open state. When the detection component (5) is separated from the box body (1), the follow-up maintenance plugging component (7) returns to a closed state to plug the through hole below the outlet pipe (6). The bottom through hole of the box body (1) is connected to an adjustable air intake component (4) for air intake and the air intake direction is adjustable. One set of air intake ends of the adjustable air intake component (4) is connected to the smoke exhaust pipe, and the other set of air intake ends of the adjustable air intake component (4) is connected to the air. When the detection component (5) is normally detecting, the adjustable air intake component (4) draws the gas in the smoke exhaust pipe into the box body (1) through one set of air intake ends. When the detection component (5) is calibrated, the adjustable air intake component (4) draws and filters the air through the other set of air intake ends and then enters the box body (1). The adjustable air intake component (4) is connected to a cleaning component (3) for cleaning dust from the detection end lens (511) of the detection component (5); when the detection component (5) is normally detected, the air outlet of the cleaning component (3) is offset from the detection end of the detection component (5), and the cleaning component (3) does not adjust the wind direction in the adjustable air intake component (4); when the detection end lens (511) of the detection component (5) is cleaned, the air outlet of the cleaning component (3) is aligned with the detection end lens (511) of the detection component (5), and the cleaning component (3) adjusts the wind direction of the adjustable air intake component (4) to the inside of the cleaning component (3); A control component (2) for controlling an online exhaust gas monitoring device and receiving and transmitting wireless signals is connected to the side wall of the box body (1); the control component (2) is electrically connected to an adjustable air intake component (4), a cleaning component (3) and a detection component (5).

2. The conveniently calibrated exhaust gas online monitoring device according to claim 1, characterized in that: The detection component (5) comprises a smoke monitor (51), a mounting side plate (52) and a transverse hole (53); a transverse hole (53) is provided on a side wall of the box body (1); the mounting side plate (52) is inserted into the transverse hole (53); the mounting side plate (52) is fixedly connected to the box body (1) via a mounting fixture; a smoke monitor (51) for particulate matter detection is installed in the mounting hole of the mounting side plate (52); a detection end of the smoke monitor (51) is located in the box body (1); and a follow-up maintenance plugging component (7) is connected to the smoke monitor (51).

3. The conveniently calibrated exhaust gas online monitoring device according to claim 2, characterized in that: The follow-up maintenance plugging assembly (7) comprises a push plate (74) and a self-resetting plugging assembly, wherein the push plate (74) is fixedly connected to the inner wall of the mounting side plate (52), the self-resetting plugging assembly is movably connected to the push plate (74), the self-resetting plugging assembly is connected to the top of the box body (1), and the self-resetting plugging assembly moves at the through hole below the air outlet pipe (6).

4. The conveniently calibrated exhaust gas online monitoring device according to claim 3 is characterized in that: The self-resetting blocking component comprises a spring (71), a baffle (72) and a guide rod (73); the inner wall of the box body (1) is symmetrically fixedly connected with the guide rod (73); the guide rod (73) is slidably connected with the baffle (72); a spring (71) is fixedly connected between the baffle (72) and the inner wall of the box body (1); the spring (71) is sleeved on the guide rod (73); and the top of the baffle (72) is slidably connected to the inner top of the box body (1).

5. The conveniently calibrated exhaust gas online monitoring device according to claim 4, characterized in that: When the spring (71) is in the initial state, the baffle (72) is located directly below the through hole below the air outlet pipe (6).

6. The conveniently calibrated exhaust gas online monitoring device according to claim 5, characterized in that: The adjustable air intake assembly (4) comprises a first air intake pipe (41), a second three-way valve (44), a pumping assembly and a filtered air intake assembly, wherein two sets of air intake ends of the second three-way valve (44) are respectively connected to the first air intake pipe (41) and the filtered air intake assembly, an air outlet end of the second three-way valve (44) is connected to an air intake end of the pumping assembly, an air outlet end of the pumping assembly is connected to the bottom of the box body (1) and communicates with the box body (1), and a cleaning assembly (3) is connected to the pumping assembly; The first air inlet pipe (41) is fixedly connected to the smoke exhaust pipe.

7. The conveniently calibrated exhaust gas online monitoring device according to claim 6, characterized in that: The filtered air intake assembly comprises a second intake pipe (42), a cover plate (43), filter cotton (47) and an air hole (48); the second intake pipe (42) is fixedly mounted at the intake end of a second three-way valve (44); the filter cotton (47) for dust filtering is inserted into the second intake pipe (42); the bottom of the second intake pipe (42) is threadedly connected to the cover plate (43); and the bottom of the cover plate (43) is provided with an air hole (48).

8. The conveniently calibrated exhaust gas online monitoring device according to claim 7, characterized in that: The pumping assembly comprises a third pipeline (45), a mounting cylinder (46), a mounting cross frame (49) and a fan (410); the lower part of the mounting cylinder (46) is fixedly connected to the air outlet end of the second three-way valve (44); the mounting cross frame (49) is installed in the mounting cylinder (46); the fan (410) is installed in the mounting cross frame (49); the top of the mounting cylinder (46) is fixedly connected to the third pipeline (45); the third pipeline (45) is connected to the bottom of the box body (1) and communicates with the box body (1); the third pipeline (45) is connected to the cleaning assembly (3).

9. The conveniently calibrated exhaust gas online monitoring device according to claim 7, characterized in that: The cleaning component (3) comprises an air intake adjustment component, an orientation adjustment component and a symmetrical jet injection component. The air intake adjustment component is connected to a third pipe (45). The air intake adjustment component is connected to the orientation adjustment component. The orientation adjustment component is connected to the symmetrical jet injection component. When the air intake adjustment component is opened toward the housing (1), gas in the third pipe (45) enters the housing (1). When the air intake adjustment component is opened toward the orientation adjustment component, gas in the third pipe (45) enters the orientation adjustment component.

10. The conveniently calibrated exhaust gas online monitoring device according to claim 9, characterized in that: The regulating air intake assembly comprises a three-way valve (31) and a first pipeline (32), the three-way valve (31) being fixedly mounted on the third pipeline (45), one set of output ends of the three-way valve (31) being fixedly connected to an end of the first pipeline (32) located outside the housing (1), the other set of output ends of the three-way valve (31) being arranged toward the third pipeline (45), and the air intake end of the three-way valve (31) being arranged toward the mounting cylinder (46); The azimuth adjustment component comprises a motor (33), a mounting straight plate (34), a first gear ring (35), an L-shaped pipe (38), a second gear ring (39) and a sealing bearing (310); the mounting straight plate (34) is fixedly connected to the inner wall of the housing (1); the motor (33) is mounted on the lower end of the mounting straight plate (34); the driving end of the motor (33) is fixedly connected to the first gear ring (35); the first gear ring (35) is meshingly connected to the second gear ring (39); the transverse portion of the L-shaped pipe (38) is mounted in the mounting hole of the second gear ring (39); the air inlet end of the transverse portion of the L-shaped pipe (38) is rotatably connected to the end of the first pipe (32) located in the housing (1) through the sealing bearing (310); the sealing bearing (310), the second gear ring (39) and the L-shaped pipe (38) are arranged in parallel with the detection end of the smoke monitor (51); and the L-shaped pipe (38) is connected to a symmetrical jet assembly; The symmetrical jet assembly comprises a jet pipe (36) and a three-way pipe (37), wherein the air inlet end of the three-way pipe (37) is fixedly connected to the air outlet end of the L-shaped pipe (38), and the air outlet end of the three-way pipe (37) is fixedly connected to the jet pipe (36).

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