A continuous on-line sampling device for environmental protection flue gas

Abstract

The application discloses a kind of for environmental protection flue gas continuous on-line sampling device, including suction device, sampling box, detection device and support column, by being equipped with sleeve body in frame plate, rotating lever is rotated by wind force, and sleeve body can rotate and displace when rotating lever rotates, produce the effect of tremble, it is convenient to drive hard board to fold and change, the structure of spade head, so that it is in swing, constantly spade scraping attachment material on the covering layer produced after flue gas blows on the outer circumferential surface of rotating lever, while bottom dynamic scraping wheel displaces and rotates with whole activity of harrow body, can also further spade and remove attachment, and have certain impact on rotating lever, more can make attachment be shaken and separate from the outer circumferential surface of rotating lever, each sleeve body can spade and remove attachment on rotating lever, avoid annular distribution rotating lever outer circumferential accumulation thick covering layer, reduce the width of path of flue gas entry, and affect suction sampling of flue gas.

Description

Technical Field

[0001] This invention relates to the field of environmental flue gas sampling, specifically a device for continuous online sampling of environmental flue gas. Background Technology

[0002] Currently, most urban centralized heating systems and domestic thermal power plants primarily use coal-fired boilers. While coal-fired boilers offer certain economic advantages and practicality, the combustion process of coal produces large amounts of harmful gases such as SO2, NO, and dust particles. To meet environmental protection requirements and improve coal combustion efficiency, a system capable of continuously monitoring the flue gas after coal combustion is needed to provide quantitative data for coal saving and emission reduction by heating companies or power generation enterprises.

[0003] Existing continuous online sampling devices for environmental protection flue gas are mostly optimized to solve the problem of sampling blockage. For example, Chinese utility model patent application number CN200710018811.4 discloses "A sampling device for an online continuous detection system for flue gas emissions". In this device, the sampling device consists of a sampling and ash removal mechanism, a controller and a sampling pump. The sampling and ash removal mechanism is used to collect sample gas and remove dust from the gas. It consists of a main structure, a backflush controller, a backflush pipe, a cleaning controller, a flue gas sample outlet, a dust removal filter element and a cleaning actuator. The controller consists of a frequency converter, a microcomputer, a flue gas velocity sampling interface, a control output interface, a frequency converter output interface, and a power supply wire interface. The microcomputer controls the sampling and ash removal mechanism for sampling and ash removal; at the same time, it controls the sampling speed of the sampling pump to achieve synchronous sampling. The sampling pump consists of a control line interface, a fan, a flue gas detection sample gas inlet, and a surplus sample gas outlet. It solves the problems of sampling blockage, synchronous sampling, and negative pressure sampling. It can be used for gas detection and sampling in harsh environments to control the production process, and it is also suitable for environmental protection sampling of various gases.

[0004] While the aforementioned continuous online sampling device for environmental flue gas has certain advantages in solving the sampling blockage problem, it still has some drawbacks: flue gas usually contains a large number of gaseous and harmful substances. During the process of the flue gas being sucked into the sampling box, the substances easily form an impurity covering layer on its outer periphery after passing through the rotating rod of the suction hood. If it is not cleaned and removed in time, the covering layer will continue to thicken, causing the rotating rod to thicken and the distance between the rotating rods to decrease, affecting the shuttle flow speed of the flue gas being sucked in, and thus affecting the efficiency of online flue gas detection. Summary of the Invention

[0005] Therefore, in order to overcome the above-mentioned shortcomings, the present invention provides a device for continuous online sampling of environmentally friendly flue gas.

[0006] This invention is implemented as follows: a continuous online sampling device for environmentally friendly flue gas is constructed. The device includes a suction device, a sampling chamber, a detection device, and a support column. One end of the suction device penetrates into the interior of the sampling chamber. The detection device is movably coupled to the sampling chamber. The support column is welded to the bottom of the sampling chamber. The suction device includes a flue gas hood, an inlet pipe, a first suction pump, a connecting pipe, and a cover. The upper end of the flue gas hood is connected to the lower end of the inlet pipe and is internally continuous. The upper end of the inlet pipe is welded to the connecting pipe and is internally continuous. The cover flange is connected to one side of the connecting pipe. The first suction pump is embedded inside the connecting pipe.

[0007] Preferably, the smoke hood includes a frame plate, a smoke inlet chamber, a sliding body, a rotating rod, a central support rod, a first bearing seat, and a second bearing seat. The smoke inlet chamber is an integral structure with the frame plate and is located inside it. The sliding body is loosely fitted to the outside of the rotating rod and is movably engaged. The two ends of the rotating rod are respectively connected to the first bearing seat and the second bearing seat and are rotatably engaged. The first bearing seat is installed on the outside of the central support rod, and the rotating rod moves to the outside of the central support rod through the first bearing seat.

[0008] Preferably, the fitting moving body includes an outer ring sleeve block, a sickle-shaped lever body, a spring, a soft block, a flexible block, an elastic ring, a through-hole, and a cavity. One end of the sickle-shaped lever body is hinged to the outer ring sleeve block. The spring is connected between the outer side of the outer ring sleeve block and the inner side of the sickle-shaped lever body and is movably engaged. The soft block and the flexible block are located inside the cavity. The front end of the flexible block is fixedly connected to the outer end face of the elastic ring. The elastic ring is movably engaged with the soft block through the flexible block. The through-hole is located on the inner side of the outer ring sleeve block and is interconnected.

[0009] Preferably, the sickle body includes a hard plate, a shovel head, and a bottom-moving scraper. The shovel head is fixedly connected to the bottom of the hard plate, and the bottom-moving scraper is installed at the bottom of the shovel head and is movable in cooperation with it.

[0010] Preferably, the sampling chamber includes an inner chamber, a column screen barrel, a fan, a control integrated panel, a sampling flue gas chamber, a fine screening plate, a hollow bottom plate, and a dust collection chamber. The column screen barrel is installed inside the inner chamber. The fan is embedded in one side wall of the inner chamber. The control integrated panel is located below the fan and electrically connected. The sampling flue gas chamber is located on the left side of the inner chamber. The fine screening plate is installed to the left of the column screen barrel. The hollow bottom plate is fixedly installed inside the inner chamber at a lower position. The dust collection chamber is an integrated structure with the inner chamber and is located at its lower position.

[0011] Preferably, the detection device includes an air inlet, a second suction pump, a delivery pipe, a sampling and detection end, and a data instrument. The air inlet and the second suction pump are an integrated structure and are disposed at the lower right end of the pump. The delivery pipe is connected to the left end of the second suction pump and is disposed internally. The sampling and detection end is embedded in the delivery pipe. The data instrument and the sampling and detection end are an integrated structure and are located above the pump.

[0012] Preferably, the frame plate flange is connected to the lower end of the air inlet pipe, the flue gas inlet chamber is connected to the interior of the air inlet pipe, the rotating rod and a sleeve moving body are a group for cooperation and movement, there are ten groups, and they are evenly distributed in a ring. The rotating rod is a columnar structure that can rotate under the cooperation of the first bearing seat and the second bearing seat.

[0013] Preferably, the through-hole penetrates the rotating rod, the elastic ring is loosely fitted on the outside of the rotating rod and slides in fit, the sickle body is movably fitted on the outer end face of the rotating rod, the elastic ring is a ring structure with telescopic deformation, there is space between the elastic ring and the outer ring block to facilitate the deformation of the tough block and the soft block, the soft block is a block of elastic plastic material with good elastic deformation, the tough block is a block of silicone material, and the sickle body swings with the movement of the elastic ring to facilitate the cleaning effect on the outer end face of the rotating rod.

[0014] Preferably, the upper end of the hard plate is hinged to the outer ring block, and the hard plate and the shovel head are combined into a sickle shape. The shovel head is a pointed structure made of hard resin. Four bottom-moving scrapers are provided at the bottom of each shovel head to facilitate the cleaning of dust and debris on the rotating rod.

[0015] Preferably, the upper end of the inner chamber of the box penetrates one end of the connecting pipe, and the lower side of one end of the inner chamber of the box penetrates the conveying pipe. The column screen barrel has multiple screen holes to facilitate layer-by-layer screening, and the fine screen plate is a plate with a small aperture to facilitate the separation of impurities in the flue gas.

[0016] The present invention has the following advantages: The present invention provides an improved continuous online sampling device for environmentally friendly flue gas, which, compared with similar devices, has the following improvements:

[0017] The present invention provides a continuous online sampling device for environmental protection flue gas. Through a suction device, the flue gas inlet chamber is connected to the inside of the inlet pipe. When the first suction pump is started, the external flue gas enters the sampling box from the flue gas inlet chamber through the inlet pipe and the connecting pipe. Then, the exhaust flue gas is sampled and detected at the detection device.

[0018] The present invention discloses a continuous online sampling device for environmentally friendly flue gas. A sliding body is provided within a frame plate, with the two ends of the rotating rod connected to a first bearing seat and a second bearing seat respectively. This allows the rod to rotate under wind force. The sliding body is connected to the rotating rod via a through-hole, enabling it to rotate and shift with the rotating rod, creating a wobbling effect. This facilitates the swaying and bending of the rigid plate. The shovel head's structure allows it to continuously scrape the coating material adhering to the outer circumference of the rotating rod after the flue gas has passed through it during its swaying motion. Simultaneously, the bottom sliding scraper wheel shifts and rotates with the overall movement of the sickle body, further removing the adhering material and exerting a certain impact force on the rotating rod, causing the adhering material to be vibrated and detached from the outer circumference of the rotating rod. Each sliding body can remove adhering material from the rotating rod, preventing the accumulation of a thick coating layer on the annularly distributed outer circumference of the rotating rod, which would reduce the width of the flue gas entry channel and affect the sampling of the flue gas.

[0019] This invention discloses a continuous online sampling device for environmentally friendly flue gas. It includes a sampling chamber where flue gas is directly fed into a column screen barrel via a connecting pipe. A blower, electrically controlled by an integrated control panel, allows for adjustable blowing force. The blower generates airflow that laterally agitates the flue gas inside the column screen barrel. The screen structure of the column screen barrel and blower facilitates the interception and sieving of different particulate matter in the flue gas. Particulate matter that cannot pass through the fine sieve plate gradually accumulates in the dust collection chamber. The flue gas from which particulate matter has been sieved passes through the fine sieve plate into the sampling flue gas chamber, becoming environmentally friendly flue gas. This is then drawn in by a second suction pump and transported through the air inlet to the delivery pipe. The sampled gas is detected at the sampling and detection end in the delivery pipe, and the sampling data is displayed on the data meter. By adjusting the blower's blowing force, different types of environmentally friendly flue gas can be sampled. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the suction device structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the smoke hood structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the rotating rod structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the fitting moving body structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the sickle-shaped pry bar structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the sampling box structure of the present invention;

[0027] Figure 8 This is a schematic diagram of the detection device of the present invention.

[0028] The components include: suction device – 1, sampling box – 2, detection device – 3, support column – 4, smoke hood – 11, air inlet pipe – 12, first suction pump – 13, connecting pipe – 14, cover – 15, frame plate – 111, smoke inlet chamber – 112, sliding body – 113, rotating rod – 114, central support rod – 115, first bearing seat – 116, second bearing seat – 117, outer ring sleeve – a1, sickle body – a2, spring – a3, soft block – a4, Tough Block – a5, Elastic Ring – a6, Through-hole – a7, Cavity – a8, Hard Plate – a21, Shovel Head – a22, Bottom Moving Scraper – a23, Inner Chamber – 21, Column Screening Bucket – 22, Fan – 23, Control Integration Board – 24, Sampling Flue Gas Chamber – 25, Fine Screening Plate – 26, Hollow Bottom Plate – 27, Dust Collection Chamber – 28, Air Inlet – 31, Second Suction Pump – 32, Delivery Pipe – 33, Sampling and Detection End – 34, Data Instrument – ​​35. Detailed Implementation

[0029] The following will be combined with the appendix Figure 1-8 This invention will be described in detail, and the technical solutions in the embodiments of this invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0030] Please see Figure 1 -2. A continuous online sampling device for environmentally friendly flue gas according to the present invention includes a suction device 1, a sampling box 2, a detection device 3, and a support column 4. One end of the suction device 1 penetrates into the interior of the sampling box 2. The detection device 3 is movably coupled to the sampling box 2. The support column 4 is welded to the lower part of the sampling box 2. The suction device 1 includes a flue gas suction hood 11, an air inlet pipe 12, a first suction pump 13, a connecting pipe 14, and a cover 15. The upper end of the flue gas suction hood 11 is connected to the lower end of the air inlet pipe 12 and is internally connected. The upper end of the air inlet pipe 12 is welded to the connecting pipe 14 and is internally connected. The cover 15 is flanged and connected to one side of the connecting pipe 14. The first suction pump 13 is embedded in the interior of the connecting pipe 14.

[0031] Please see Figure 3-4. A continuous online sampling device for environmentally friendly flue gas according to the present invention, wherein the flue gas hood 11 includes a frame plate 111, a flue gas inlet chamber 112, a fitted moving body 113, a rotating rod 114, a central support rod 115, a first bearing seat 116, and a second bearing seat 117. The flue gas inlet chamber 112 is an integral structure with the frame plate 111 and is located inside it. The fitted moving body 113 is loosely fitted to the outside of the rotating rod 114 and is movably engaged. The two ends of the rotating rod 114 are respectively connected to the first bearing seat 116 and the second bearing seat 117 and are rotatable. In this configuration, the first bearing seat 116 is installed on the outside of the middle support rod 115, and the rotating rod 114 moves movably on the outside of the middle support rod 115 via the first bearing seat 116. The frame plate 111 is flanged and connected to the lower end of the air inlet pipe 12. The flue gas inlet chamber 112 is connected to the interior of the air inlet pipe 12. The rotating rod 114 and a set of fitting moving bodies 113 are arranged in a set for cooperation and movement. There are ten sets of such sets, which are evenly distributed in a ring. The rotating rod 114 is a columnar structure that can rotate under the cooperation of the first bearing seat 116 and the second bearing seat 117.

[0032] Please see Figure 5-6. A continuous online sampling device for environmentally friendly flue gas according to the present invention, wherein the fitting moving body 113 includes an outer ring block a1, a sickle-shaped body a2, a spring a3, a soft block a4, a tough block a5, an elastic ring a6, a through-hole a7, and a cavity a8. One end of the sickle-shaped body a2 is hinged to the outer ring block a1. The spring a3 is connected between the outer side of the outer ring block a1 and the inner side of the sickle-shaped body a2 and is movably engaged. The soft block a4 and the tough block a5 are located inside the cavity a8. The front end of the resilient block a5 is fixedly connected to the outer end face of the elastic ring a6. The elastic ring a6 is movably engaged with the soft block a4 through the resilient block a5. The sleeve opening a7 is located inside the outer ring block a1 and is interconnected with it. The sickle body a2 includes a hard plate a21, a shovel head a22, and a bottom moving scraper a23. The shovel head a22 is fixedly connected to the bottom of the hard plate a21. The bottom moving scraper a23 is installed at the bottom position of the shovel head a22 and is movably engaged. The sleeve opening a7 is located inside the outer ring block a1. a7 penetrates through the rotating rod 114. The elastic ring a6 is loosely fitted onto the outer side of the rotating rod 114 and slides in fit. The sickle body a2 is movably fitted onto the outer end face of the rotating rod 114. The elastic ring a6 is a ring structure with telescopic deformation. There is a space between the elastic ring a6 and the outer ring block a1 to facilitate the deformation of the tough block a5 and the soft block a4. The soft block a4 is a block of elastic plastic material with good elastic deformation. The tough block a5 is... The silicone block has a scissor body a2 that swings with the movement of the elastic ring a6, which facilitates cleaning on the outer end face of the rotating rod 114. The upper end of the hard plate a21 is hinged to the outer ring block a1. The hard plate a21 and the shovel head a22 are combined to form a sickle shape. The shovel head a22 is a pointed structure made of hard resin. The bottom moving scraper a23 is provided at the bottom of each shovel head a22, which facilitates cleaning the dust and soot on the rotating rod 114.

[0033] Please see Figure 7-8. A continuous online sampling device for environmentally friendly flue gas according to the present invention, wherein the sampling box 2 includes an inner chamber 21, a column screen barrel 22, a fan 23, a control integrated plate 24, a sampling flue gas chamber 25, a fine sieve plate 26, a hollow bottom plate 27, and a dust collection chamber 28. The column screen barrel 22 is installed inside the inner chamber 21. The fan 23 is embedded in one side wall of the inner chamber 21. The control integrated plate 24 is located below the fan 23 and electrically connected. The sampling flue gas chamber 25 is located to the left of the inner chamber 21. The fine sieve plate 26 is installed to the left of the column screen barrel 22. The hollow bottom plate 27 is fixedly installed inside the inner chamber 21 at a lower position. The dust collection chamber 28 is an integrated structure with the inner chamber 21 and is located at a lower position therein. The detection device 3 includes an air inlet 31, a second suction pump 32, a delivery pipe 33, a sampling and detection end 34, and a data instrument 35. The air inlet 31 and the second suction pump 32 are integrated and are disposed at the lower right end of the pump. The delivery pipe 33 is connected to the left end of the second suction pump 32 and is disposed internally. The sampling and detection end 34 is embedded in the delivery pipe 33. The data instrument 35 is integrated with the sampling and detection end 34 and is located above it. The upper end of the inner chamber 21 is connected to one end of the connecting pipe 14, and the lower side of the inner chamber 21 is connected to the delivery pipe 33. The column screen barrel 22 has multiple screen holes for easy layer-by-layer screening. The fine screen plate 26 is a plate with a small aperture to facilitate the separation of impurities in the flue gas.

[0034] This invention provides an improved continuous online sampling device for environmentally friendly flue gas. Through a suction device 1, a flue gas suction hood 11 is installed on the lower port of an inlet pipe 12, connecting the flue gas inlet chamber 112 to the inside of the inlet pipe 12. When the first suction pump 13 is activated, external flue gas enters the sampling chamber 2 from the flue gas inlet chamber 112 via the inlet pipe 12 and the connecting pipe 14. The discharged flue gas is then sampled and detected at the detection device 3. A fitted moving body 113 is provided within the frame plate 111, and the two ends of the rotating rod 114 are respectively connected to the first bearing seat 116 and the second bearing seat 117. The connection allows it to rotate under wind force. The sleeve a7 passes through the rotating rod 114, and its diameter is larger than the diameter of the rotating rod 114. The fitted moving body 113 thus rotates and shifts with the rotating rod 114, producing a wobbling effect. This facilitates the swinging movement of the rigid plate a21. The structure of the shovel head a22 allows it to continuously scrape the coating material adhering to the outer surface of the rotating rod 114 after the smoke has passed through it during its swinging motion. Simultaneously, the bottom moving scraper wheel a23 shifts and rotates with the overall movement of the sickle body a2, further removing the adhering material and exerting a certain impact force on the rotating rod 114. This allows the adhering substances to be vibrated and detached from the outer circumference of the rotating rod 114. Each mating moving body 113 can remove the adhering substances from the rotating rod 114, preventing a thick covering layer from accumulating on the outer circumference of the annularly distributed rotating rod 114, reducing the width of the flue gas entry channel, and thus affecting the sampling of the flue gas. The flue gas enters the sampling box 2, and since the end of the connecting pipe 14 directly delivers the flue gas into the column screen barrel 22, the fan 23 is operated by personnel under the electrical coordination of the control integrated plate 24. The blowing force of the fan 23 is adjustable, and the wind force it generates blows the flue gas inside the column screen barrel 22 laterally. The screen structure of the column screen barrel 22 and the blower 23 facilitates the interception and screening of different particulate matter in the flue gas. The particulate matter is difficult to pass through the fine screen plate 26 and is gradually stored in the dust collection chamber 28. The flue gas with the particulate matter screened out enters the sampling flue gas chamber 25 through the fine screen plate 26, becoming environmentally friendly flue gas. It is then drawn in by the second suction pump 32 and transported to the delivery pipe 33 through the air inlet 31. In the delivery pipe 33, the sampling detection end 34 performs sampling gas detection, and the sampling data is displayed at the data instrument 35. By adjusting the blowing force of the blower 23, different environmentally friendly flue gases can be sampled.

[0035] The above description shows and illustrates the basic principles, main features, and advantages of the present invention. Standard parts used in the present invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A continuous online sampling device for environmentally friendly flue gas, characterized in that: It includes a suction device (1), a sampling box (2), a detection device (3) and a support column (4). One end of the suction device (1) penetrates into the interior of the sampling box (2). The detection device (3) is movably connected with the sampling box (2). The support column (4) is welded to the bottom of the sampling box (2). The suction device (1) includes a smoke hood (11), an air inlet pipe (12), a first suction pump (13), a connecting pipe (14), and a cover (15). The upper end of the smoke hood (11) is connected to the lower end of the air inlet pipe (12) and is internally connected. The upper end of the air inlet pipe (12) is welded to the connecting pipe (14) and is internally connected. The flange of the cover (15) is connected to one side of the connecting pipe (14). The first suction pump (13) is embedded in the inside of the connecting pipe (14).

2. The continuous online sampling device for environmentally friendly flue gas according to claim 1, characterized in that: The smoke hood (11) includes a frame plate (111), a smoke inlet chamber (112), a fitting moving body (113), a rotating rod (114), a central support rod (115), a first bearing seat (116), and a second bearing seat (117). The smoke inlet chamber (112) is an integral structure with the frame plate (111) and is located inside it. The fitting moving body (113) is fitted with the outside of the rotating rod (114) with a gap and is movably engaged. The two ends of the rotating rod (114) are respectively connected to the first bearing seat (116) and the second bearing seat (117) and are rotatably engaged. The first bearing seat (116) is installed on the outside of the central support rod (115). The rotating rod (114) moves to the outside of the central support rod (115) through the first bearing seat (116).

3. The continuous online sampling device for environmentally friendly flue gas according to claim 2, characterized in that: The fitting moving body (113) includes an outer ring sleeve block (a1), a sickle body (a2), a spring (a3), a soft block (a4), a tough block (a5), an elastic ring (a6), a through-hole (a7), and a cavity (a8). One end of the sickle body (a2) is hinged to the outer ring sleeve block (a1). The spring (a3) ​​is connected between the outer side of the outer ring sleeve block (a1) and the inner side of the sickle body (a2) and is movably engaged. The soft block (a4) and the tough block (a5) are located inside the cavity (a8). The front end of the tough block (a5) is fixedly connected to the outer end face of the elastic ring (a6). The elastic ring (a6) is movably engaged with the soft block (a4) through the tough block (a5). The through-hole (a7) is located on the inner side of the outer ring sleeve block (a1) and is interconnected.

4. The continuous online sampling device for environmentally friendly flue gas according to claim 3, characterized in that: The sickle body (a2) includes a hard plate (a21), a shovel head (a22), and a bottom moving scraper (a23). The shovel head (a22) is fixedly connected to the bottom of the hard plate (a21), and the bottom moving scraper (a23) is installed at the bottom of the shovel head (a22) and is movable.

5. The continuous online sampling device for environmentally friendly flue gas according to claim 1, characterized in that: The sampling chamber (2) includes an inner chamber (21), a column screen barrel (22), a fan (23), a control integration board (24), a sampling flue gas chamber (25), a fine screening plate (26), a hollow bottom plate (27), and a dust collection chamber (28). The column screen barrel (22) is installed inside the inner chamber (21). The fan (23) is embedded in one side wall of the inner chamber (21). The control integration board (24) is located below the fan (23) and electrically connected. The sampling flue gas chamber (25) is located to the left of the inner chamber (21). The fine screening plate (26) is installed to the left of the column screen barrel (22). The hollow bottom plate (27) is fixedly installed inside the inner chamber (21) at a lower position. The dust collection chamber (28) is an integrated structure with the inner chamber (21) and is located at its lower position.

6. The continuous online sampling device for environmentally friendly flue gas according to claim 1, characterized in that: The detection device (3) includes an air inlet (31), a second suction pump (32), a delivery pipe (33), a sampling and detection end (34), and a data instrument (35). The air inlet (31) and the second suction pump (32) are an integrated structure and are disposed in a position on the lower right side of the pump. The delivery pipe (33) is connected to the left side of the second suction pump (32) and is disposed in a through-hole manner. The sampling and detection end (34) is embedded in the delivery pipe (33). The data instrument (35) and the sampling and detection end (34) are an integrated structure and are located above the sampling and detection end (34).

7. The continuous online sampling device for environmentally friendly flue gas according to claim 2, characterized in that: The frame plate (111) is flanged and connected to the lower end of the air inlet pipe (12). The flue gas inlet chamber (112) is connected to the interior of the air inlet pipe (12). The rotating rod (114) and a fitting moving body (113) work together as a set.

8. The continuous online sampling device for environmentally friendly flue gas according to claim 3, characterized in that: The through-hole (a7) penetrates the rotating rod (114), the elastic ring (a6) is loosely fitted on the outside of the rotating rod (114) and is slidably engaged, and the sickle body (a2) is movably engaged on the outer end face of the rotating rod (114).

9. The continuous online sampling device for environmentally friendly flue gas according to claim 4, characterized in that: The upper end of the hard plate (a21) is hinged to the outer ring block (a1), and the hard plate (a21) and the shovel head (a22) are combined to form a sickle shape.

10. The continuous online sampling device for environmentally friendly flue gas according to claim 5, characterized in that: The upper end of the inner chamber (21) penetrates one end of the connecting pipe (14), and the lower side of the inner chamber (21) penetrates the conveying pipe (33).

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