Flue gas detection sampling device and method

Abstract

The invention relates to the technical field of flue gas detection sampling, in particular to a flue gas detection sampling device and method. Comprising a supporting frame which is fixedly installed on a discharge pipe and is of a U-shaped structure. A pipeline is fixedly installed between the two horizontal sections of the supporting frame, the left end of the pipeline fixedly penetrates into the discharging pipe, a sampling mechanism is arranged on the supporting frame, and a pre-drying mechanism is arranged below the supporting frame; according to the sampling mechanism, the sampling pipe is pushed to move into the exhaust pipe, so that the stability of the sampling pipe in the sampling process is guaranteed through mechanical control, the sampling accuracy is guaranteed, a filter cartridge can be quickly replaced through the filter part for sampling operation, and the flue gas sampling efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas detection and sampling, and particularly relates to a flue gas detection and sampling device and method. Background Art

[0002] The waste gas generated by smelting metals is discharged through an exhaust pipe after being treated. To avoid a large amount of unqualified gas being discharged, it is necessary to regularly sample the flue gas in the exhaust pipe. The sampling method is usually to insert a handheld detector into the exhaust pipe, and through negative pressure suction, the flue gas in the exhaust pipe is filtered through a filter cartridge for particulate matter, and the filtered gas enters a harmful gas detection instrument for detecting the content of harmful gases. The detection needs to be sampled multiple times to avoid contingency. After multiple samplings are completed, the filter cartridge needs to be dried, and after drying, the filter cartridge needs to be weighed to detect whether the particulate matter content emission in the flue gas is qualified.

[0003] However, the following problems mainly exist in the current sampling process of smelting metal waste gas emissions: When using a handheld detector for multiple samplings, the operator is prone to fatigue and it is difficult to maintain the stability of the detector, resulting in the detector being prone to shaking, causing uneven flow of the flue gas inside the exhaust pipe,进而 affecting the accuracy of sampling. Moreover, multiple samplings require the detector to be disassembled and assembled multiple times to replace the filter cartridge, resulting in low overall detection efficiency. Summary of the Invention

[0004] In view of the above problems, the embodiments of the present application provide a flue gas detection and sampling device and method to solve the above-mentioned technical problems.

[0005] To achieve the above object, the embodiments of the present application provide the following technical solutions: In a first aspect of the embodiments of the present application, a flue gas detection and sampling device is provided, including a support frame fixedly installed on the discharge pipe in a U-shaped structure; a pipe is fixedly installed between the two horizontal sections of the support frame, and the left end of the pipe fixedly penetrates into the discharge pipe. A sampling mechanism is arranged on the support frame, and a pre-drying mechanism is arranged below the support frame.

[0006] The sampling mechanism includes a first sealing disc. The first sealing disc is arranged at the left end of the pipe. Two support rods penetrating the pipe are symmetrically and fixedly installed at the front and rear of the right end of the first sealing disc. The right ends of the symmetrically arranged front and rear support rods are commonly fixedly installed with a second sealing disc located on the right side of the pipe. A sampling pipe is fixedly installed between the second sealing disc and the second sealing disc. The end of the sampling pipe close to the first sealing disc is evenly provided with air inlet holes along its circumferential direction. The right end of the second sealing plate is fixedly installed with an inverted L-shaped pipe communicated with the sampling pipe.

[0007] A pushing and pulling part for pushing and pulling the sampling pipe to move is arranged on the support frame, a filtering part for detecting particulate matter in the flue gas is arranged below the support frame, a communicating part is also arranged on the support frame, and an opening and closing part is arranged in the L-shaped pipe.

[0008] The pre-drying mechanism comprises a vertical pipe, the vertical pipe is fixedly installed below the support frame through a support plate, a storage part for storing the sampled filter cartridge is rotatably installed in the vertical pipe, and a preheating part for preheating the filter cartridge is arranged on the vertical pipe.

[0009] As a preferred embodiment, the push-pull part includes a slide groove, and the two horizontal sections of the support frame are both provided with a slide groove, in which a slide plate with an L-shaped structure is slidably installed, the vertical section of the slide plate is fixedly connected to the right end of the No. 2 sealing disk, and a connecting plate is commonly installed on the right end of the horizontal section of the slide plate. The vertical section of the inverted L-shaped tube is fixedly passed through the horizontal section of the lower slide plate, and an electric push rod No. 1 is fixedly installed on the upper end of the lower horizontal section of the support frame, and the telescopic section of the No. 1 electric push rod is fixedly installed with a connecting block fixedly connected to the connecting plate.

[0010] As a preferred embodiment, the connecting part includes a No. 2 electric push rod, which is fixedly installed on the rear side of the lower end of the upper horizontal section of the support frame. The telescopic section of the No. 2 electric push rod slides through the upper horizontal section of the support frame and is fixedly installed with a connecting plate. A push-pull rod is fixedly installed on the lower end of the connecting plate. A receiving plate located below the support frame is fixedly installed on the lower end of the push-pull rod. A connecting pipe is fixedly installed on the other side of the receiving plate, and the connecting pipe has a funnel-shaped structure.

[0011] As a preferred embodiment, the filter part includes a rotating shaft, and a rotating shaft is arranged on the front side of the support frame. The lower end of the rotating shaft rotates and passes through the two horizontal sections of the support frame and then is fixedly installed with a cross plate. The upper end of the upper horizontal section of the support frame is fixedly installed with a No. 1 motor, and the output shaft of the No. 1 motor rotates and passes through the support frame and then is fixedly connected to the rotating shaft. The four branches of the cross plate are all slidably installed with an I-shaped placement tube, and a tension spring is installed between the upper horizontal section of the placement tube and the cross plate. A limit member for limiting the falling of the filter cartridge is arranged in the placement tube, and a pushing member is arranged on the support frame.

[0012] As a preferred embodiment, the storage portion includes a heat-conducting column, a heat-conducting column is coaxially rotatably installed in the vertical tube, a vertical column is coaxially fixedly installed on the upper end of the heat-conducting column, the vertical column is rotatably connected to the rotating shaft by a belt, circular grooves are evenly opened on the heat-conducting column along its circumference, a driven gear is rotatably installed on the upper end of the vertical tube, through holes are provided on the driven gear corresponding to the circular grooves, a guide tube is fixedly installed at a position on the upper end of the gear corresponding to the through holes, a No. 2 motor is fixedly installed on the side wall of the vertical tube through a motor seat, and a driving gear meshing with the driven gear is fixedly installed after the output shaft of the No. 2 motor rotates through the motor seat.

[0013] As a preferred embodiment, the opening and closing part includes a ball, and the ball is rotatably installed on the lower part of the vertical section of the inverted L-shaped tube. A liquid outlet is penetrated by the ball, and an axis rod is symmetrically fixedly installed on the outer surface of the ball. The axis rod rotates and penetrates the inverted L-shaped tube, and a spur gear is fixedly installed on the rear axis rod, and a pillar is fixedly installed on the upper end of the receiving plate, and a rack meshing with the spur gear is fixedly installed on the upper end of the pillar.

[0014] As a preferred solution, the preheating part includes a spiral groove, the vertical pipe is provided with a spiral groove, the side wall of the vertical pipe is connected to the two ends of the spiral groove at positions corresponding to each other, and the other end of the conveying pipe is connected to the discharge pipe.

[0015] As a preferred embodiment, the limiting member includes a slot, and the lower part of the inner cavity of the placement tube is evenly provided with slots along its circumference. A limiting block is slidably installed in the slot through a compression spring, and the side of the limiting block close to the corresponding axis of the placement tube is an isosceles trapezoidal structure.

[0016] As a preferred embodiment, the pusher comprises a No. 3 electric push rod, and the No. 3 electric push rod is fixedly installed on the upper end of the lower horizontal section of the support frame. The telescopic section of the No. 3 electric push rod slides through the support frame and is fixedly installed with a push plate.

[0017] A second aspect of an embodiment of the present application provides a smoke detection sampling method, which is completed in cooperation with a smoke detection sampling device and includes the following steps: S1. Place the required filter cartridge into the filter part.

[0018] S2. The push-pull unit pushes the sampling tube to move into the exhaust pipe for flue gas sampling.

[0019] S3. The connecting part pushes the corresponding filter cartridge to connect with the inverted L-shaped tube.

[0020] S4. After one sampling is completed, the filtration unit replaces the filter cartridge to continue sampling.

[0021] S5. After sampling, the filter cartridge is moved to the pre-drying mechanism for pre-drying.

[0022] S6. After multiple samplings, remove the filter cartridge, dry it thoroughly, and then weigh it to detect the particle content.

[0023] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0024] 1. The sampling mechanism provided in the present invention pushes the sampling tube to move into the exhaust pipe to ensure the stability of the sampling tube during the sampling process through mechanical control, thereby ensuring the accuracy of sampling, and the filter cartridge can be quickly replaced through the filter part to perform sampling operations, thereby improving the efficiency of flue gas sampling.

[0025] 2. The rotation of the filter part and the cross plate provided in the present invention can quickly replace the filter cartridge, and ensure that the replaced filter cartridge is connected to the inverted L-shaped tube through the connecting part, thereby reducing disassembly and assembly, thereby improving the efficiency of smoke detection sampling.

[0026] 3. When the filter cartridge is replaced, the drying mechanism provided in the present invention will push the sampled filter cartridge into the storage portion by the pushing member, and pre-dry the used filter cartridge by the temperature of the flue gas in the exhaust pipe to reduce condensed water in the filter cartridge, thereby reducing the time for subsequent drying and weighing, and further improving the efficiency of flue gas sampling and detection.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. 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 description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of this application.

[0030] Figure 2 for Figure 1 Schematic diagram of the second perspective structure.

[0031] Figure 3 for Figure 2 A magnified view of the structure in the middle.

[0032] Figure 4 This is a schematic diagram of the structure of the filter unit of the present application.

[0033] Figure 5 It is a partial structural cross-sectional view of the sampling mechanism of the present application.

[0034] Figure 6 This is a cross-sectional view of the limiting member of the present application.

[0035] Figure 7 This is a schematic diagram of the structure of the preheating unit of this application.

[0036] Reference numerals: 10, support frame; 11, pipe; 2, sampling mechanism; 20, first sealing disc; 21, support rod; 22, second sealing disc; 23, sampling pipe; 24, inverted L-shaped pipe; 25, push-pull part; 250, sliding plate; 251, connecting plate; 252, first electric push rod; 253, connecting block; 26, communication part; 260, second electric push rod; 261, connecting plate; 262, push-pull rod; 263, receiving plate; 264, connecting pipe; 27, opening and closing part; 270, ball; 271, shaft rod; 272, spur gear; 273, rack; 28, filtering part; 280, rotating shaft; 281, cross plate; 282, first motor; 283, placing pipe; 284, tension spring; 4, limiting part; 40, compression spring; 41, limiting block; 5, pushing part; 50, third electric push rod; 51, pushing plate; 3, pre-drying mechanism; 30, vertical pipe; 31, storage part; 310, heat conducting column; 311, column; 312, belt; 313, circular groove; 314, driven gear; 315, through hole; 316, guiding pipe; 317, second motor; 318, driving gear; 32, preheating part; 320, spiral groove; 321, conveying pipe. Detailed implementation manners

[0037] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe in detail the specific implementation manners of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0038] As Figure 1 shown, a flue gas detection and sampling device includes a support frame 10 fixedly installed on the discharge pipe and having a U-shaped structure; a pipe 11 is fixedly installed between the two horizontal sections of the support frame 10, and the left end of the pipe 11 fixedly penetrates into the discharge pipe. A sampling mechanism 2 is arranged on the support frame 10, and a pre-drying mechanism 3 is arranged below the support frame 10.

[0039] As Figure 1 、 Figure 2 、 Figure 4 and Figure 5As shown, the sampling mechanism 2 includes a No. 1 sealing disk 20, a No. 1 sealing disk 20 is arranged at the left end of the pipeline 11, and two support rods 21 penetrating the pipeline 11 are fixedly installed symmetrically at the right end of the No. 1 sealing disk 20, and a No. 2 sealing disk 22 located on the right side of the pipeline 11 is fixedly installed at the right ends of the front and rear symmetrical support rods 21, and a sampling tube 23 is fixedly installed between the No. 2 sealing disks 22 and the No. 2 sealing disks 22, and air inlet holes are uniformly opened along the circumference of the sampling tube 23 at one end of the sampling tube 23 close to the No. 1 sealing disk 20, and an inverted L-shaped tube 24 connected to the sampling tube 23 is fixedly installed at the right end of the No. 2 sealing plate.

[0040] like Figure 1 and Figure 2 As shown, the support frame 10 is provided with a push-pull portion 25 for pushing and pulling the sampling tube 23, a filter portion 28 for detecting particulate matter in the flue gas is provided below the support frame 10, a connecting portion 26 is also provided on the support frame 10, and an opening and closing portion 27 is provided in the L-shaped pipe 11.

[0041] like Figure 1 and Figure 2 As shown, the pre-drying mechanism 3 includes a vertical pipe 30, and the vertical pipe 30 is fixedly installed below the support frame 10 through a support plate. A storage portion 31 for storing the sampled filter cartridge is rotatably installed in the vertical pipe 30, and a preheating portion 32 for preheating the filter cartridge is provided on the vertical pipe 30.

[0042] During specific operation, the push-pull part 25 pushes the No. 2 sealing disk 22 to move, and the No. 2 sealing disk 22 drives the sampling tube 23 to move into the exhaust pipe, and pushes the No. 1 sealing disk 20 that is initially attached to the left end of the pipe 11 to move left, and then the external negative pressure suction machine is connected to the inverted L-shaped tube 24 through the connecting part 26 and the filter part 28. After the smoke flow in the exhaust pipe is stable, the external negative pressure suction machine inhales to filter the smoke in the exhaust pipe through the filter part 28 and then transmits it to the external harmful gas detection machine to detect whether the harmful gas content exceeds the standard. After one sampling is completed, the filter part 28 converts the filter cartridge, and the used filter cartridge is moved to the storage part 31 to pre-dry it through the preheating part 32 to improve the subsequent detection efficiency; multiple samplings are performed in sequence to avoid contingency. After multiple samplings are completed, the pre-dried filter cartridge is taken out for drying and weighing to detect whether the particle emission content in the smoke is qualified.

[0043] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the push-pull portion 25 includes a slide groove, and the two horizontal sections of the support frame 10 are both provided with a slide groove, in which a slide plate 250 with an L-shaped structure is slidably installed, and the vertical section of the slide plate 250 is fixedly connected to the right end of the No. 2 sealing disk 22, and a connecting plate 251 is commonly installed on the right end of the horizontal section of the slide plate 250, and the vertical section of the inverted L-shaped tube 24 is fixedly passed through the horizontal section of the lower slide plate 250, and a No. 1 electric push rod 252 is fixedly installed on the upper end of the lower horizontal section of the support frame 10, and the telescopic section of the No. 1 electric push rod 252 is fixedly installed with a connecting block 253 fixedly connected to the connecting plate 251.

[0044] like Figure 1 , Figure 4 and Figure 6 As shown, the filter part 28 includes a rotating shaft 280, and the rotating shaft 280 is arranged on the front side of the support frame 10. The lower end of the rotating shaft 280 rotates through the two horizontal sections of the support frame 10 and then is fixedly installed with a cross plate 281. The upper end of the upper horizontal section of the support frame 10 is fixedly installed with a No. 1 motor 282. The output shaft of the No. 1 motor 282 rotates through the support frame 10 and then is fixedly connected to the rotating shaft 280. The four branches of the cross plate 281 are all slidably installed with an I-shaped placement tube 283. A tension spring 284 is installed between the upper horizontal section of the placement tube 283 and the cross plate 281. A limit member 4 for limiting the falling of the filter cartridge is arranged in the placement tube 283, and a pushing member 5 is arranged on the support frame 10.

[0045] like Figure 6 As shown, the limiting member 4 includes a slot, and the lower part of the inner cavity of the placement tube 283 is evenly provided with slots along its circumference, and a limiting block 41 is slidably installed in the slot through a compression spring 40, and the side of the limiting block 41 close to the axis of the corresponding placement tube 283 is an isosceles trapezoidal structure.

[0046] During the specific operation, the filter cartridges are manually placed in the inverted placement tube 283, and the limit block 41 limits the filter cartridge from falling. Then, the No. 1 electric push rod 252 pushes the two slides 250 to move toward the exhaust pipe through the connecting block 253 and the connecting plate 251, and the slide 250 pushes the No. 2 sealing disk 22 to move, and the No. 2 sealing disk 22 pushes the sampling tube 23 into the exhaust pipe until the No. 2 sealing disk 22 contacts the right end of the pipeline 11, and then the connecting portion 26 pushes the corresponding placement tube 283 and the inverted L-shaped tube. 24 is connected, and sampling and testing can be carried out at this time. After one sampling, the connecting part 26 moves away from the corresponding placement tube 283, and then the No. 1 motor 282 drives the cross plate 281 to rotate, so as to rotate the next filter cartridge to the bottom of the vertical section of the inverted L-shaped tube 24, and then the connecting part 26 resists and pushes the current placement tube 283 to connect with the inverted L-shaped tube 24, and the filter cartridge after sampling rotates to the position of the pre-drying mechanism 3, so as to push the sampled filter cartridge into the pre-drying mechanism 3 through the pushing part for pre-drying treatment.

[0047] like Figure 2 and Figure 3 As shown, the connecting part 26 includes a No. 2 electric push rod 260, and the No. 2 electric push rod 260 is fixedly installed on the rear side of the lower end of the upper horizontal section of the support frame 10. The telescopic section of the No. 2 electric push rod 260 slides through the upper horizontal section of the support frame 10 and is fixedly installed with a connecting plate 261. A push-pull rod 262 is fixedly installed at the lower end of the connecting plate 261. A receiving plate 263 located below the support frame 10 is fixedly installed at the lower end of the push-pull rod 262. A connecting pipe 264 is fixedly installed on the other side of the connecting plate 263, and the connecting pipe 264 is a funnel-shaped structure.

[0048] like Figure 2 , Figure 3 and Figure 6 As shown, the opening and closing portion 27 includes a ball 270, and the ball 270 is rotatably installed on the lower part of the vertical section of the inverted L-shaped tube 24. A liquid outlet hole is penetrated on the ball 270, and an axle rod 271 is fixedly installed on the outer surface of the ball 270 symmetrically front and back. The axle rod 271 rotatably penetrates the inverted L-shaped tube 24, and a spur gear 272 is fixedly installed on the rear side of the axle rod 271, and a pillar is fixedly installed on the upper end of the receiving plate 263, and a rack 273 meshing with the spur gear 272 is fixedly installed on the upper end of the pillar.

[0049] During specific operation, the No. 2 electric push rod 260 pulls the receiving plate 263 upward through the connecting plate 261 and the push-pull rod 262, and the receiving plate 263 drives the connecting tube 264 to contact the lower end of the corresponding placement tube 283, and pushes the upper end of the corresponding placement tube 283 to contact the lower end of the vertical section of the inverted L-shaped tube 24, and stretches the tension spring 284. While the supporting plate moves up, it will move up through the rack 273, and the rack 273 drives the spur gear 272 to rotate, and the spur gear 272 drives the ball 270 to rotate through the shaft 271, so that the liquid outlet of the ball 270 is connected to the inverted L-shaped tube 24, and then the external negative pressure suction machine is connected to the lower end of the connecting tube 264 to suck the smoke in the exhaust pipe for sampling and detection.

[0050] After one sampling is completed, the No. 2 electric push rod 260 pushes the receiving plate 263 downward through the connecting plate 261 and the push-pull rod 262, and the receiving plate 263 drives the connecting tube 264 away from the corresponding placement tube 283. The placement tube 283 moves downward away from the inverted L-shaped tube 24 under the action of the tension spring 284, and the downward movement of the supporting plate drives the spur gear 272 to rotate in the opposite direction through the rack 273, and the spur gear 272 drives the ball 270 to rotate through the shaft 271 to seal the lower end of the vertical section of the inverted L-shaped tube 24, and then the filter part 28 replaces the filter cartridge for secondary sampling.

[0051] like Figure 1 , Figure 2 and Figure 4As shown, the pusher 5 includes a No. 3 electric push rod 50, and the No. 3 electric push rod 50 is fixedly installed on the upper end of the lower horizontal section of the support frame 10. The telescopic section of the No. 3 electric push rod 50 slides through the support frame 10 and then a pusher plate 51 is fixedly installed.

[0052] like Figure 1 , Figure 2 , Figure 4 and Figure 7 As shown, the storage portion 31 includes a heat-conducting column 310, and the heat-conducting column 310 is coaxially rotatably installed in the vertical tube 30. A column 311 is coaxially fixedly installed on the upper end of the heat-conducting column 310. The column 311 is rotatably connected to the rotating shaft 280 through a belt 312. Circular grooves 313 are evenly opened on the heat-conducting column 310 along its circumference. A driven gear 314 is rotatably installed on the upper end of the vertical tube 30. Through holes 315 are provided on the driven gear 314 corresponding to the circular grooves 313 in a one-to-one manner. A guide tube 316 is fixedly installed at a position on the upper end of the gear corresponding to the through holes 315 in a one-to-one manner. A second motor 317 is fixedly installed on the side wall of the vertical tube 30 through a motor seat. After the output shaft of the second motor 317 rotates through the motor seat, a driving gear 318 meshing with the driven gear 314 is fixedly installed.

[0053] like Figure 1 , Figure 2 and Figure 7 As shown, the preheating part 32 includes a spiral groove 320, and the spiral groove 320 is opened in the vertical pipe 30. The side wall of the vertical pipe 30 and the two ends of the spiral groove 320 are connected to a conveying pipe 321 at a one-to-one corresponding position, and the other end of the conveying pipe 321 is connected to the discharge pipe.

[0054] During specific operation, after one sampling is completed, the filter unit 28 drives the sampled filter cartridge to move to the storage unit 31, and then the No. 3 electric push rod 50 pushes the push plate 51 downward, and the push plate 51 pushes the sampled filter cartridge downward, so that the filter cartridge falls into the corresponding circular groove 313 through the guide tube 316 and the through hole 315, and then the No. 2 motor 317 drives the driven gear 314 to rotate through the driving gear 318, so that the through hole 315 is away from the circular groove 313, and the non-porous section of the driven gear 314 seals the corresponding circular groove 313, and then the smoke discharged in the exhaust pipe can flow in the spiral groove 320 through the conveying pipe 321, and the temperature in the smoke is transmitted to the filter cartridge through the vertical pipe 30 and the guide column to perform pre-drying processing on the filter cartridge.

[0055] After the secondary sampling is completed, the filter unit 28 drives the placement tube 283 to rotate through the rotating shaft 280 and the cross plate 281, and the rotating shaft 280 drives the column 311 to rotate through the belt 312, and the column 311 drives the heat-conducting column 310 to rotate synchronously, so that the filter cartridge after the secondary sampling moves to the next empty circular groove 313, and then repeats the above operation to push the filter cartridge into the corresponding circular groove 313 for pre-drying operation.

[0056] In addition, the present invention also provides a smoke detection sampling method, which is completed in cooperation with a smoke detection sampling device and includes the following steps: S1. placing the required filter cartridge into the corresponding placement tube 283 of the filter part 28.

[0057] S2. The push-pull part 25 pushes the sampling tube 23 to move into the exhaust pipe, and at the same time, the second sealing plate contacts and seals the right end of the pipe 11.

[0058] S3. The connecting part 26 pushes the corresponding placement tube 283 with the filter cartridge placed thereon to move upward and contact and communicate with the lower end of the vertical section of the inverted L-shaped tube 24, and then the sample is sucked and sampled through an external negative pressure suction machine.

[0059] S4. After one sampling is completed, the filter unit 28 drives the cross plate 281 to rotate to replace the next filter cartridge and move it to the bottom of the vertical section of the inverted L-shaped tube 24 to continue sampling.

[0060] S5. The filter cartridge after sampling moves and is pushed by the pushing member 5 to fall into the corresponding circular groove 313 through the guide tube 316 and the through hole 315, and is pre-dried by the preheating unit 32.

[0061] S6. After multiple samplings, remove all filter cartridges, dry them thoroughly, and then weigh them to detect whether the flue gas particulate matter emission content exceeds the standard.

[0062] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0063] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0064] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flue gas detection sampling device, comprising a support frame (10) fixedly installed on the discharge pipe and having a U-shaped structure; characterized in that: A pipe (11) is fixedly installed between the two horizontal sections of the support frame (10), and the left end of the pipe (11) is fixedly inserted into the discharge pipe. A sampling mechanism (2) is arranged on the support frame (10), and a pre-drying mechanism (3) is arranged below the support frame (10); wherein: The sampling mechanism (2) comprises a No. 1 sealing disk (20), the left end of the pipeline (11) is provided with the No. 1 sealing disk (20), the right end of the No. 1 sealing disk (20) is symmetrically fixedly installed with two support rods (21) penetrating the pipeline (11), the right ends of the front-back symmetrical support rods (21) are jointly fixedly installed with a No. 2 sealing disk (22) located on the right side of the pipeline (11), a sampling tube (23) is fixedly installed between the No. 2 sealing disks (22) and the No. 2 sealing disks (22), and an end of the sampling tube (23) close to the No. 1 sealing disk (20) is uniformly provided with air inlet holes along its circumference, and an inverted L-shaped tube (24) connected with the sampling tube (23) is fixedly installed at the right end of the No. 2 sealing plate; The support frame (10) is provided with a push-pull portion (25) for pushing and pulling the sampling tube (23), a filter portion (28) for detecting particulate matter in smoke is provided below the support frame (10), a connecting portion (26) is also provided on the support frame (10), and an opening and closing portion (27) is provided inside the L-shaped pipe (11); The pre-drying mechanism (3) comprises a vertical pipe (30), the vertical pipe (30) is fixedly mounted below the support frame (10) via a support plate, a storage portion (31) for storing the sampled filter cartridge is rotatably mounted in the vertical pipe (30), and a preheating portion (32) for preheating the filter cartridge is provided on the vertical pipe (30).

2. A smoke detection sampling device according to claim 1, characterized in that: The push-pull portion (25) includes a slide groove, and the two horizontal sections of the support frame (10) are both provided with a slide groove, and a slide plate (250) with an L-shaped structure is slidably installed in the slide groove, and the vertical section of the slide plate (250) is fixedly connected to the right end of the second sealing disk (22), and a connecting plate (251) is commonly installed on the right end of the horizontal section of the slide plate (250), and the vertical section of the inverted L-shaped tube (24) is fixedly passed through the horizontal section of the lower slide plate (250), and a No. 1 electric push rod (252) is fixedly installed on the upper end of the lower horizontal section of the support frame (10), and the telescopic section of the No. 1 electric push rod (252) is fixedly installed with a connecting block (253) fixedly connected to the connecting plate (251).

3. A smoke detection sampling device according to claim 1, characterized in that: The connecting part (26) includes a No. 2 electric push rod (260), and the No. 2 electric push rod (260) is fixedly installed on the rear side of the lower end of the upper horizontal section of the support frame (10). The telescopic section of the No. 2 electric push rod (260) slides through the upper horizontal section of the support frame (10) and is fixedly installed with a connecting plate (261). The lower end of the connecting plate (261) is fixedly installed with a push-pull rod (262), and the lower end of the push-pull rod (262) is fixedly installed with a receiving plate (263) located below the support frame (10), and the other side of the receiving plate (263) is fixedly installed with a connecting pipe (264), and the connecting pipe (264) is a funnel-shaped structure.

4. A smoke detection sampling device according to claim 1, characterized in that: The filtering part (28) comprises a rotating shaft (280), and the front side of the supporting frame (10) is provided with the rotating shaft (280), and the lower end of the rotating shaft (280) rotates through the two horizontal sections of the supporting frame (10) and is fixedly installed with a cross plate (281), and the upper end of the upper horizontal section of the supporting frame (10) is fixedly installed with a No. 1 motor (282), and the output shaft of the No. 1 motor (282) rotates through the supporting frame (10) and is fixedly connected to the rotating shaft (280), and the four branches of the cross plate (281) are all slidably installed with an I-shaped placement tube (283), and a tension spring (284) is installed between the upper horizontal section of the placement tube (283) and the cross plate (281), and a limiting member (4) for limiting the falling of the filter cartridge is arranged in the placement tube (283), and a pushing member (5) is arranged on the supporting frame (10).

5. A smoke detection sampling device according to claim 1, characterized in that: The storage portion (31) includes a heat-conducting column (310), the heat-conducting column (310) is coaxially rotatably installed in the vertical tube (30), a column (311) is coaxially fixedly installed on the upper end of the heat-conducting column (310), the column (311) is rotatably connected to the rotating shaft (280) through a belt (312), circular grooves (313) are uniformly opened on the heat-conducting column (310) along its circumference, and a driven gear (313) is rotatably installed on the upper end of the vertical tube (30). 14), a through hole (315) is provided on the driven gear (314) in one-to-one correspondence with the circular groove (313), a guide tube (316) is fixedly installed at a position on the upper end of the gear in one-to-one correspondence with the through hole (315), a second motor (317) is fixedly installed on the side wall of the vertical tube (30) through the motor seat, and a driving gear (318) meshing with the driven gear (314) is fixedly installed after the output shaft of the second motor (317) rotates and passes through the motor seat.

6. A smoke detection sampling device according to claim 3, characterized in that: The opening and closing portion (27) includes a ball (270), and the ball (270) is rotatably mounted on the lower part of the vertical section of the inverted L-shaped tube (24). A liquid outlet hole is penetrated through the ball (270), and an axle (271) is fixedly mounted on the outer surface of the ball (270) symmetrically in the front and rear. The axle (271) rotatably penetrates the inverted L-shaped tube (24), and a spur gear (272) is fixedly mounted on the rear side of the axle (271). A pillar is fixedly mounted on the upper end of the receiving plate (263), and a rack (273) meshing with the spur gear (272) is fixedly mounted on the upper end of the pillar.

7. A smoke detection sampling device according to claim 1, characterized in that: The preheating part (32) comprises a spiral groove (320), the vertical pipe (30) is provided with a spiral groove (320), the side wall of the vertical pipe (30) and the two ends of the spiral groove (320) are connected to a delivery pipe (321) at positions corresponding to each other, and the other end of the delivery pipe (321) is connected to the discharge pipe.

8. A smoke detection sampling device according to claim 4, characterized in that: The limiting member (4) comprises a notch, and the lower part of the inner cavity of the placement tube (283) is evenly provided with a notch along its circumference, and a limiting block (41) is slidably installed in the notch through a compression spring (40), and the side of the limiting block (41) close to the axis of the corresponding placement tube (283) is an isosceles trapezoidal structure.

9. A smoke detection sampling device according to claim 4, characterized in that: The pusher (5) comprises a No. 3 electric push rod (50), and the No. 3 electric push rod (50) is fixedly installed on the upper end of the lower horizontal section of the support frame (10), and a pusher plate (51) is fixedly installed after the telescopic section of the No. 3 electric push rod (50) slides through the support frame (10).

10. A smoke detection sampling method, characterized in that: The smoke detection sampling device according to claim 1 is used to complete the process, comprising the following steps: S1. Place the desired filter cartridge into the filter unit (28); S2. The push-pull unit (25) pushes the sampling tube (23) to move into the exhaust pipe to sample the flue gas; S3. The connecting portion (26) pushes the corresponding filter cartridge to communicate with the inverted L-shaped tube (24); S4. After one sampling is completed, the filter unit (28) replaces the filter cartridge and continues sampling; S5. After sampling, the filter cartridge is moved to the pre-drying mechanism (3) for pre-drying; S6. After multiple samplings, remove the filter cartridge, dry it thoroughly, and then weigh it to detect the particle content.

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