Flue gas detection sampling device and method

Abstract

The present application relates to the technical fields of flue gas detection sampling, in particular to a flue gas detection sampling device and method; it comprises a support frame in a type structure fixedly installed on a discharge pipe; a pipeline is fixedly installed between two horizontal sections of the support frame, the left end of the pipeline is fixedly penetrated into the discharge pipe, a sampling mechanism is arranged on the support frame, and a pre-drying mechanism is arranged below the support frame; the sampling mechanism arranged in the present application moves into the exhaust pipe by pushing the sampling pipe, so as to ensure the stability of the sampling pipe in the sampling process by mechanical control, thereby ensuring the accuracy of sampling, and the filter part can quickly replace the filter cartridge for sampling operation, thereby improving the efficiency of flue gas sampling.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flue gas detection sampling, in particular to a flue gas detection sampling device and method. BACKGROUND

[0002] The waste gas generated by smelting metal is discharged through the exhaust pipe after treatment. In order to avoid the discharge of a large amount of unqualified gas, the flue gas in the exhaust pipe needs to be sampled regularly. The sampling method is usually to insert a handheld detector into the exhaust pipe, and the flue gas in the exhaust pipe is filtered by a filter cartridge through negative pressure suction to remove particulate matter. The filtered gas enters a harmful gas detection instrument for harmful gas content detection. The detection needs to be sampled multiple times to avoid accidents. After multiple sampling, the filter cartridge needs to be dried, and the filter cartridge is weighed after drying to detect whether the particulate matter content in the flue gas meets the emission standard.

[0003] However, in the current sampling process of smelting metal waste gas emission, the following problems exist: when the handheld detector is sampled multiple times, the operator is easily tired and it is difficult to maintain the stability of the detector, which causes the detector to easily shake, resulting in uneven flow of the flue gas inside the exhaust pipe, thereby affecting the accuracy of the sampling. In addition, multiple sampling requires multiple disassembly and assembly of the detector to replace the filter cartridge, thereby reducing the overall detection efficiency. SUMMARY

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

[0005] In order to achieve the above purpose, the present application provides the following technical scheme: the first aspect of the present application provides a flue gas detection sampling device, which comprises a support frame fixedly installed on an exhaust pipe in a shape of a Chinese character 'fang'. A pipeline is fixedly installed between two horizontal sections of the support frame, and the left end of the pipeline is fixedly penetrated into the exhaust 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 comprises a first sealing disc, the left end of the pipeline is provided with the first sealing disc, the right end of the first sealing disc is fixedly installed with two support rods penetrating the pipeline in a front-to-back symmetrical manner, the right ends of the front-to-back symmetrical support rods are fixedly installed with a second sealing disc located on the right side of the pipeline, a sampling pipe is fixedly installed between the second sealing disc and the second sealing disc, and a plurality of air inlet holes are uniformly arranged on the end of the sampling pipe close to the first sealing disc in a circumferential direction. A reverse L-shaped pipe is fixedly installed at the right end of the second sealing plate and is in communication with the sampling pipe.

[0007] The support frame is provided with a push-pull part for pushing and pulling the sampling pipe to move, the lower part of the support frame is provided with a filtering part for detecting particulate matter in the flue gas, the support frame is further provided with a communication part, and the L-shaped pipeline is provided with an opening and closing part.

[0008] The pre-drying mechanism comprises a vertical pipe, the lower part of the support frame is fixedly installed with the vertical pipe through a support plate, a storage part for storing the filter cartridge after sampling 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 scheme, the push-pull part comprises a sliding groove, the two horizontal sections of the support frame are each provided with the sliding groove, an L-shaped sliding plate is slidably installed in the sliding groove, the vertical section of the sliding plate is fixedly connected with the right end of the second sealing disc, the horizontal section of the sliding plate is jointly installed with a connecting plate at the right end, the vertical section of the inverted L-shaped pipe is fixedly penetrated through the horizontal section of the lower sliding plate, the upper end of the lower horizontal section of the support frame is fixedly installed with a first electric push rod, and the extension section of the first electric push rod is fixedly installed with a connecting block fixedly connected with the connecting plate.

[0010] As a preferred scheme, the communication part comprises a second electric push rod, the rear side of the lower end of the upper horizontal section of the support frame is fixedly installed with the second electric push rod, the extension section of the second electric push rod is slidably penetrated through the rear of the upper horizontal section of the support frame and is fixedly installed with a connecting plate, the lower end of the connecting plate is fixedly installed with a push-pull rod, the lower end of the push-pull rod is fixedly installed with a receiving plate located below the support frame, the other side of the receiving plate is fixedly installed with a connecting pipe, and the connecting pipe is in a funnel-shaped structure.

[0011] As a preferred scheme, the filtering part comprises a rotating shaft, the front side of the support frame is provided with the rotating shaft, the lower end of the rotating shaft is rotatably penetrated through the rear of the two horizontal sections of the support frame and is fixedly installed with a cross plate, the upper end of the upper horizontal section of the support frame is fixedly installed with a first motor, the output shaft of the first motor is rotatably penetrated through the rear of the support frame and is fixedly connected with the rotating shaft, the four sections of the cross plate are each slidably installed with an I-shaped placing pipe, a tension spring is installed between the upper horizontal section of the placing pipe and the cross plate, the placing pipe is provided with a limiting piece for limiting the falling of the filter cartridge, and the support frame is provided with a pushing piece.

[0012] As a preferred scheme, the storage part comprises a heat-conducting column, the heat-conducting column is coaxially rotatably installed in the vertical pipe, a vertical column is coaxially fixedly installed at the upper end of the heat-conducting column, the vertical column is rotatably connected with the rotating shaft through a belt, circular grooves are uniformly formed in the circumferential direction of the heat-conducting column, a driven gear is rotatably installed at the upper end of the vertical pipe, through holes are arranged on the driven gear in one-to-one correspondence with the circular grooves, guide pipes are fixedly installed at the upper end of the gear in one-to-one corresponding positions of the through holes, a second motor is fixedly installed on the side wall of the vertical pipe through a motor base, the output shaft of the second motor is rotatably penetrated through the motor base and is fixedly installed with a driving gear engaged with the driven gear.

[0013] As a preferred scheme, the opening and closing part comprises a ball, the lower part of the vertical section of the inverted L-shaped pipe is rotationally installed with the ball, a liquid outlet hole is formed through the ball, the outer surface of the ball is symmetrically and fixedly installed with a shaft rod, the shaft rod rotationally penetrates the inverted L-shaped pipe, the shaft rod at the rear side is fixedly installed with a spur gear, the upper end of the receiving plate is fixedly installed with a support column, and the upper end of the support column is fixedly installed with a rack engaged with the spur gear.

[0014] As a preferred scheme, the preheating part comprises a spiral groove, the spiral groove is formed in the vertical pipe, and the side wall of the vertical pipe is in communication with the two ends of the spiral groove in a one-to-one correspondence position

[0015] As a preferred scheme, the limiting piece comprises a notch, the inner cavity of the placing pipe is uniformly provided with a notch at the lower part in the circumferential direction, a limiting block is slidingly installed in the notch through a compression spring, and the side close to the corresponding axis of the placing pipe is in an isosceles trapezoidal structure.

[0016] As a preferred scheme, the pushing piece comprises a third electric push rod, the lower part of the horizontal section of the support frame is fixedly installed with the third electric push rod at the upper end, and the telescopic section of the third electric push rod slidingly penetrates the support frame and is fixedly installed with a pushing plate at the rear.

[0017] The second aspect of the embodiment of the application provides a flue gas detection and sampling method, which is completed by cooperating with the flue gas detection and sampling device, and comprises the following steps: S1. placing the required filter cartridge into the filtering part.

[0018] S2. The sampling pipe is moved into the exhaust pipe by the push-pull part to perform flue gas sampling.

[0019] S3. The corresponding filter cartridge is communicated with the inverted L-shaped pipe by the communication part.

[0020] S4. After one sampling is completed, the filtering part exchanges the filter cartridge to continue sampling.

[0021] S5. The filter cartridge after sampling is moved to the pre-drying mechanism to perform pre-drying.

[0022] S6. After multiple samplings, the filter cartridge is taken out, completely dried, and then weighed to detect the particulate matter content.

[0023] The above one or more technical solutions in the embodiment of the application have at least one of the following technical effects:

[0024] First, the sampling mechanism provided by the application moves the sampling pipe into the exhaust pipe to ensure the stability of the sampling pipe during sampling by mechanical control, thereby ensuring the accuracy of sampling, and the filter cartridge can be quickly replaced by the filtering part for sampling operation, thereby improving the efficiency of flue gas sampling.

[0025] Second, the filter part and the rotation of the cross plate provided by the present application can quickly replace the filter cartridge, and ensure that the replaced filter cartridge is communicated with the inverted L-shaped pipe through the communication part, thereby reducing disassembly and assembly, and further improving the efficiency of flue gas sampling and sampling.

[0026] Third, the drying mechanism provided by the present application can push the sampling filter cartridge into the storage part through the pushing member when the filter cartridge is replaced, and pre-dry the used filter cartridge through the temperature of the flue gas in the exhaust pipe, so as to reduce the condensate water in the filter cartridge, thereby reducing the subsequent drying and weighing time, and further improving the efficiency of flue gas sampling and detection.

[0027] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

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

[0030] Figure 2 It is Figure 1 It is a schematic view of the second perspective structure.

[0031] Figure 3 It is Figure 2 It is an enlarged view of the structure at A in the middle.

[0032] Figure 4 It is a schematic view of the filter part of the present application.

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

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

[0035] Figure 7 It is a schematic view of the preheating part of the present application.

[0036] 10, support frame; 11, pipeline; 2, sampling mechanism; 20, No. 1 sealing disc; 21, support rod; 22, No. 2 sealing disc; 23, sampling tube; 24, inverted L-shaped tube; 25, push-pull part; 250, sliding plate; 251, connecting plate; 252, No. 1 electric push rod; 253, connecting block; 26, communication part; 260, No. 2 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; 272, straight gear; 273, rack; 28, filtering part; 280, rotating shaft; 281, cross plate; 282, No. 1 motor; 283, placing tube; 284, tension spring; 4, limiting piece; 40, compression spring; 41, limiting block; 5, pushing piece; 50, No. 3 electric push rod; 51, pushing plate; 3, pre-drying mechanism; 30, vertical pipe; 31, storage part; 310, heat-conducting column; 311, vertical column; 312, belt; 313, circular groove; 314, driven gear; 315, through hole; 316, guide pipe; 317, No. 2 motor; 318, driving gear; 32, preheating part; 320, spiral groove; 321, conveying pipe. DETAILED DESCRIPTION

[0037] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application 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 spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0038] As shown in Figure 1 A flue gas detection sampling device, comprising a support frame 10 fixedly installed on a discharge pipe in a shape of a Chinese character "fang"; a pipeline 11 is fixedly installed between two horizontal sections of the support frame 10, the left end of the pipeline 11 is fixedly penetrated 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 shown in Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the sampling mechanism 2 includes a sealing disc 20, the left end of the pipeline 11 is provided with a sealing disc 20, the right end of the sealing disc 20 is symmetrically fixedly installed with two support rods 21 penetrating the pipeline 11, the right end of the symmetrically front and rear support rods 21 is commonly fixedly installed with a second sealing disc 22 located on the right side of the pipeline 11, a sampling tube 23 is fixedly installed between the second sealing disc 22 and the second sealing disc 22, the end of the sampling tube 23 close to the sealing disc 20 is uniformly provided with air inlet holes in the circumferential direction, and the right end of the second sealing plate is fixedly installed with a reverse L-shaped pipe 24 in communication with the sampling tube 23.

[0040] As shown in Figure 1 and Figure 2 , the support frame 10 is provided with a push-pull part 25 for moving the sampling tube 23, the lower part of the support frame 10 is provided with a filter part 28 for detecting particulate matter in flue gas, and the support frame 10 is also provided with a communication part 26, and the L-shaped pipeline 11 is provided with an opening and closing part 27.

[0041] As shown in Figure 1 and Figure 2 , the pre-drying mechanism 3 includes a vertical pipe 30, the lower part of the support frame 10 is fixedly installed with a vertical pipe 30 through a support plate, a storage part 31 for storing the sampling filter cartridge is rotatably installed in the vertical pipe 30, and the vertical pipe 30 is provided with a preheating part 32 for preheating the filter cartridge.

[0042] In specific work, the push-pull part 25 pushes the second sealing disc 22 to move, the second sealing disc 22 drives the sampling tube 23 to move into the exhaust pipe, and pushes the sealing disc 20 in the initial state to move left with the left end of the pipeline 11, then the external negative pressure suction machine is connected with the reverse L-shaped pipe 24 through the filter part 28 and the communication part 26, after the flue gas in the exhaust pipe flows stably, the external negative pressure suction machine inhales to convey the flue gas in the exhaust pipe to the external harmful gas detection machine after filtering by the filter part 28, to detect whether the harmful gas content exceeds the standard, after one sampling is completed, the filter part 28 changes the filter cartridge, and the used filter cartridge moves to the storage part 31, so that the preheating part 32 is used for pre-drying, so as to improve the detection efficiency; multiple sampling is carried out in turn to avoid contingency, after multiple sampling is completed, the pre-dried filter cartridge is taken out for drying and weighing, to detect whether the particulate emission content in the flue gas is qualified.

[0043] As shown in Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the push-pull part 25 includes a sliding groove, both horizontal sections of the support frame 10 are provided with a sliding groove, an L-shaped sliding plate 250 is slidingly installed in the sliding groove, the vertical section of the sliding plate 250 is fixedly connected with the right end of the second sealing disc 22, the horizontal section of the sliding plate 250 is jointly provided with a connecting plate 251 at the right end, the vertical section of the inverted L-shaped pipe 24 is fixedly penetrated through the horizontal section of the lower sliding plate 250, the lower horizontal section of the support frame 10 is fixedly provided with a first electric push rod 252 at the upper end, the extension section of the first electric push rod 252 is fixedly provided with a connecting block 253 which is fixedly connected with the connecting plate 251.

[0044] As shown in Figure 1 , Figure 4 and Figure 6 , the filter part 28 includes a rotating shaft 280, the front side of the support frame 10 is provided with the rotating shaft 280, the lower end of the rotating shaft 280 is rotatably penetrated through the rear of the support frame 10 and is fixedly provided with a cross plate 281, the upper end of the upper horizontal section of the support frame 10 is fixedly provided with a first motor 282, the output shaft of the first motor 282 is rotatably penetrated through the rear of the support frame 10 and is fixedly connected with the rotating shaft 280, four sections of the cross plate 281 are slidingly provided with an I-shaped placement pipe 283, a tension spring 284 is installed between the upper horizontal section of the placement pipe 283 and the cross plate 281, the placement pipe 283 is provided with a limiting piece 4 which limits the falling of the filter cartridge, and the support frame 10 is provided with a pushing piece 5.

[0045] As shown in Figure 6 , the limiting piece 4 includes a notch, the inner cavity of the placement pipe 283 is uniformly provided with a notch at the lower part along the circumference, the notch is slidingly provided with a limiting block 41 through a compression spring 40, and the side of the limiting block 41 close to the corresponding shaft of the placement pipe 283 is in isosceles trapezoidal structure.

[0046] In specific work, the filter cartridges are placed in the placement pipe 283 in sequence by manual, the falling of the filter cartridges is limited by the limiting block 41, then the two sliding plates 250 are moved to the exhaust pipe direction by the first electric push rod 252 through the connecting block 253 and the connecting plate 251, the sliding plate 250 pushes the second sealing disc 22 to move, the second sealing disc 22 pushes the sampling pipe 23 to extend into the exhaust pipe, until the second sealing disc 22 abuts against the right end of the pipeline 11, then the communication part 26 pushes the corresponding placement pipe 283 to communicate with the inverted L-shaped pipe 24, at this time, sampling detection can be carried out, after sampling, the communication part 26 is away from the corresponding placement pipe 283, then the cross plate 281 is rotated by the first motor 282, so as to rotate the next filter cartridge to the position directly below the vertical section of the inverted L-shaped pipe 24, then the current placement pipe 283 is abutted and pushed by the communication part 26 to communicate with the inverted L-shaped pipe 24, and the sampled filter cartridge is rotated to the position of the pre-drying mechanism 3, so as to push the sampled filter cartridge into the pre-drying mechanism 3 by the pushing part to carry out pre-drying treatment.

[0047] As Figure 2 and Figure 3 shown, the communication part 26 includes the second electric push rod 260, the upper horizontal section rear end of the support frame 10 is fixedly installed with the second electric push rod 260, the telescopic section of the second electric push rod 260 is slidably penetrated through the rear fixed installation of the upper horizontal section of the support frame 10 is connected with the connecting plate 261, the lower end of the connecting plate 261 is fixedly installed with the push-pull rod 262, the lower end of the push-pull rod 262 is fixedly installed with the receiving plate 263 below the support frame 10, the other side of the receiving plate 263 is fixedly installed with the connecting pipe 264, the connecting pipe 264 is in the funnel type structure.

[0048] As Figure 2 , Figure 3 and Figure 6 shown, the opening and closing part 27 includes the ball 270, the vertical section lower part of the inverted L-shaped pipe 24 is rotatably installed with the ball 270, the ball 270 is penetrated through the liquid outlet hole, the outer surface of the ball 270 is fixedly installed with the shaft rod 271 symmetrically in front and back, the shaft rod 271 is rotatably penetrated through the inverted L-shaped pipe 24, the rear shaft rod 271 is fixedly installed with the spur gear 272, the upper end of the receiving plate 263 is fixedly installed with the support column, the upper end of the support column is fixedly installed with the rack 273 engaged with the spur gear 272.

[0049] Specifically, the second electric push rod 260 pulls the receiving plate 263 up through the connecting plate 261 and the push-pull rod 262, the receiving plate 263 drives the connecting pipe 264 to abut against the corresponding placing pipe 283, and the upper end of the corresponding placing pipe 283 abuts against the vertical section lower end of the inverted L-shaped pipe 24, and the tension spring 284 is stretched, while the receiving plate is moved up, the rack 273 is moved up, the rack 273 drives the spur gear 272 to rotate, the spur gear 272 drives the ball 270 to rotate through the shaft rod 271, the liquid outlet hole of the ball 270 is communicated with the inverted L-shaped pipe 24, then the external negative pressure suction machine is communicated with the lower end of the connecting pipe 264 to suck the flue gas in the exhaust pipe for sampling detection.

[0050] After the first sampling is completed, the second electric push rod 260 pushes the receiving plate 263 down through the connecting plate 261 and the push-pull rod 262, the receiving plate 263 drives the connecting pipe 264 to move away from the corresponding placing pipe 283, the placing pipe 283 moves down away from the inverted L-shaped pipe 24 under the action of the tension spring 284, and the downward movement of the receiving plate drives the spur gear 272 to rotate in the opposite direction through the rack 273, the spur gear 272 drives the ball 270 to rotate through the shaft rod 271 to seal the vertical section lower end of the inverted L-shaped pipe 24, and then the filter part 28 exchanges the filter cartridge to perform the second sampling.

[0051] As Figure 1 , Figure 2 and Figure 4As shown, the pushing member 5 includes a third electric push rod 50, and the lower horizontal section of the support frame 10 is fixedly installed with the third electric push rod 50 at the upper end, and the telescopic section of the third electric push rod 50 is slidably penetrated through the support frame 10 and is fixedly installed with a pushing plate 51 at the rear.

[0052] As shown in Figure 1 , Figure 2 , Figure 4 and Figure 7 , the storage part 31 includes a heat-conducting column 310, which is coaxially and rotatably installed in the vertical pipe 30, and the upper end of the heat-conducting column 310 is coaxially and fixedly installed with a vertical column 311, and the vertical column 311 is rotatably connected with the rotating shaft 280 through a belt 312, and the heat-conducting column 310 is uniformly and circumferentially provided with a circular groove 313, and the upper end of the vertical pipe 30 is rotatably installed with a driven gear 314, and the driven gear 314 is provided with a through hole 315 one-to-one corresponding to the circular groove 313, and the upper end of the gear is fixedly installed with a guide pipe 316 at a position corresponding to the through hole 315, and the side wall of the vertical pipe 30 is fixedly installed with a second motor 317 through a motor base, and the output shaft of the second motor 317 is rotatably penetrated through the motor base and is fixedly installed with a driving gear 318 engaged with the driven gear 314.

[0053] As shown in Figure 1 , Figure 2 and Figure 7 , the preheating part 32 includes a spiral groove 320, and the vertical pipe 30 is provided with the spiral groove 320, and the side wall of the vertical pipe 30 is in communication with the two ends of the spiral groove 320 one-to-one corresponding positions with a conveying pipe 321, and the other end of the conveying pipe 321 is in communication with the exhaust pipe.

[0054] In particular, after the sampling is completed, the filter part 28 drives the sampled filter cartridge to move to the storage part 31, and then the third electric push rod 50 pushes the pushing plate 51 to move downward, and the pushing plate 51 pushes the sampled filter cartridge to move downward, so that the filter cartridge falls into the corresponding circular groove 313 through the guide pipe 316 and the through hole 315, and then the second 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-hole section of the driven gear 314 seals the corresponding circular groove 313, and then the flue gas discharged in the exhaust pipe can flow in the spiral groove 320 through the conveying pipe 321, and the temperature in the flue gas is transmitted to the filter cartridge through the vertical pipe 30 and the guide column to perform the pre-drying processing of the filter cartridge.

[0055] After the secondary sampling is completed, the filter part 28 drives the placing pipe 283 to rotate through the rotating shaft 280 and the cross plate 281, 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 is moved to the next empty circular groove 313, and the above operation is repeated to push the filter cartridge into the corresponding circular groove 313 for pre-drying operation.

[0056] In addition, the application also provides a flue gas detection sampling method, which is completed by cooperating with the flue gas detection sampling device, and comprises the following steps: S1. placing the required filter cartridge into the corresponding placing pipe 283 of the filter part 28.

[0057] S2. The push-pull part 25 pushes the sampling pipe 23 to move into the exhaust pipe, and the second sealing plate is in contact with the right end of the pipeline 11 to seal.

[0058] S3. The communication part 26 pushes the placing pipe 283 with the filter cartridge to move upwards and contact the lower end of the vertical segment of the inverted L-shaped pipe 24, and then performs suction sampling through the external negative pressure suction machine.

[0059] S4. After the primary sampling is completed, the filter part 28 drives the cross plate 281 to rotate to exchange the next filter cartridge to move to the vertical segment of the inverted L-shaped pipe 24 to continue sampling.

[0060] S5. The filter cartridge after sampling moves through the pushing element 5 to push it to fall into the corresponding circular groove 313 through the guide pipe 316 and the through hole 315, and pre-drying operation is performed through the preheating part 32.

[0061] S6. After multiple samplings, the filter cartridges are all taken out and completely dried, and then weighed to detect whether the flue gas particulate matter emission content exceeds the standard.

[0062] In the description of the application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the protection scope of the application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0063] In addition, the terms "first", "second", "one", "two" are only used for descriptive purposes and are not to be construed as indicating or implying relative importance or a specific number of indicated technical features. Therefore, the features defined with "first", "second", "one", "two" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0064] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "connected", "mounted", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0065] The embodiments of the specific implementation are the preferred embodiments of the present application, and are not limited to the protection scope of the present application, so that any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A flue gas detection sampling device comprising a support frame fixedly installed on a discharge pipe in a shape of a Chinese character "fang"; characterized in that: The pipeline is fixedly installed between the two horizontal sections of the support frame, the left end of the pipeline is fixedly penetrated into the discharge pipe, the support frame is provided with a sampling mechanism, and the lower portion of the support frame is provided with a pre-drying mechanism. The sampling mechanism comprises a first sealing disc, the left end of the pipeline is provided with the first sealing disc, two support rods penetrating the pipeline are fixedly installed at the right end of the first sealing disc in a front-rear symmetrical manner, the right ends of the front-rear symmetrical support rods are jointly fixedly installed with a second sealing disc located at the right side of the pipeline, a sampling tube is fixedly installed between the first sealing disc and the second sealing disc, air inlet holes are uniformly formed in the end of the sampling tube close to the first sealing disc in a circumferential direction, and a reverse L-shaped pipeline is fixedly installed at the right end of the second sealing disc and communicates with the sampling tube. The support frame is provided with a push-pull part for pushing and pulling the sampling tube to move, the lower portion of the support frame is provided with a filtering part for detecting particulate matters in flue gas, the support frame is further provided with a communicating part, and an opening and closing part is arranged in the L-shaped pipeline. The filtering part comprises a rotating shaft, the front side of the support frame is provided with the rotating shaft, the lower end of the rotating shaft is rotatably penetrated through the two horizontal sections of the support frame and is fixedly installed with a cross plate, four supporting sections of the cross plate are all slidingly installed with a H-shaped placing tube, the placing tube is provided with a limiting piece for limiting the falling of a filter cartridge, and the support frame is provided with a pushing piece. The limiting piece comprises a notch, the inner cavity of the placing tube is uniformly provided with notches in a circumferential direction at the lower portion, the notches are slidingly installed with limiting blocks through compression springs, and the side of the limiting block close to the corresponding axis of the placing tube is in isosceles trapezoidal structure. The pre-drying mechanism comprises a vertical pipeline, the lower portion of the support frame is fixedly installed with the vertical pipeline through a supporting plate, the vertical pipeline is rotatably installed with a storage part for storing the filter cartridge after sampling, and the vertical pipeline is provided with a preheating part for preheating the filter cartridge. The opening and closing part comprises a ball, the lower portion of the vertical section of the reverse L-shaped pipeline is rotatably installed with the ball, the ball is penetrated with a liquid outlet hole, the outer surface of the ball is fixedly installed with a shaft rod in a front-rear symmetrical manner, the shaft rod is rotatably penetrated through the reverse L-shaped pipeline, the rear shaft rod is fixedly installed with a straight gear, the upper end of the receiving plate is fixedly installed with a support column, and the upper end of the support column is fixedly installed with a rack engaged with the straight gear. The preheating part comprises a spiral groove, the vertical pipeline is provided with the spiral groove, the side wall of the vertical pipeline and the two ends of the spiral groove are communicated with conveying pipes in a one-to-one correspondence, and the other ends of the conveying pipes are communicated with the discharge pipe.

2. A flue gas detection sampling device according to claim 1, characterised in that: The push-pull part comprises a sliding groove, the two horizontal sections of the support frame are all provided with the sliding groove, the sliding groove is slidingly installed with a sliding plate in L-shaped structure, the vertical section of the sliding plate is fixedly connected with the right end of the second sealing disc, the horizontal section of the sliding plate is jointly installed with a connecting plate, the vertical section of the reverse L-shaped pipeline is fixedly penetrated through the horizontal section of the lower sliding plate, the upper end of the lower horizontal section of the support frame is fixedly installed with a first electric push rod, and the telescopic section of the first electric push rod is fixedly installed with a connecting block fixedly connected with the connecting plate.

3. A flue gas detection sampling device according to claim 1, characterised in that: The communication part comprises a second electric push rod, the rear side of the lower end of the upper horizontal section of the support frame is fixedly installed with the second electric push rod, the telescopic section of the second electric push rod is slidably penetrated through the rear of the upper horizontal section of the support frame and is fixedly installed with a connecting plate, the lower end of the connecting plate is fixedly installed with a push-pull rod, the lower end of the push-pull rod is fixedly installed with a receiving plate below the support frame, the other side of the receiving plate is fixedly installed with a connecting pipe, and the connecting pipe is in a funnel type structure.

4. The flue gas detection sampling device of claim 1, wherein: The upper end of the upper horizontal section of the support frame is fixedly installed with a first motor, the output shaft of the first motor is rotatably penetrated through the rear of the support frame and is fixedly connected with the rotating shaft, and the upper horizontal section of the placing pipe is installed with a tension spring between the cross plate.

5. The flue gas detection sampling device of claim 1, wherein: The storage part comprises a heat-conducting column, the heat-conducting column is coaxially and rotatably installed in the vertical pipe, the upper end of the heat-conducting column is coaxially and fixedly installed with a vertical column, the vertical column is rotatably connected with the rotating shaft through a belt, the heat-conducting column is uniformly provided with a circular groove along the circumferential direction thereof, the upper end of the vertical pipe is rotatably installed with a driven gear, the driven gear is provided with a through hole corresponding to the circular groove one by one, the upper end of the gear is fixedly installed with a guide pipe corresponding to the through hole one by one, the sidewall of the vertical pipe is fixedly installed with a second motor through a motor base, and the output shaft of the second motor is rotatably penetrated through the motor base and is fixedly installed with a driving gear engaged with the driven gear.

6. A flue gas detection sampling device according to claim 4, characterised in that: The pushing piece comprises a third electric push rod, the upper end of the lower horizontal section of the support frame is fixedly installed with the third electric push rod, and the telescopic section of the third electric push rod is fixedly installed with a pushing plate penetrated through the rear of the support frame.

7. A method of detecting a sample of flue gas, the method comprising: The flue gas detection and sampling device is completed by cooperation of the device, and comprises the following steps: S1. placing the required filter cartridge into the filter part; S2. moving the sampling pipe into the exhaust pipe by the push-pull part to sample flue gas; S3. communicating the corresponding filter cartridge with the inverted L-shaped pipe by the communication part; S4. after one sampling is completed, the filter part exchanges the filter cartridge to continue sampling; S5. moving the sampled filter cartridge to the pre-drying mechanism to pre-dry; S6. after multiple samplings, taking out the filter cartridge to completely dry and then weighing to detect the particulate matter content.

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