A sampling probe for flue gas emission monitoring

Abstract

The utility model belongs to sampling probe technical field especially is a kind of sampling probe for flue gas emission monitoring, including sampling probe main part, the side of sampling probe main part is fixed with air inlet end, the side of sampling probe main part upper side is equipped with installation slot, filter box is placed in the installation slot, the both sides in filter box are fixed with filter screen;The side bolt mounting of sampling probe main part is equipped with driving motor, the driving end portion of driving motor is fixed with linkage rod, the outer wall of linkage rod is fixed with mixing plate;The particle in the flue gas is classified and intercepted by double-layer hollow filter screen in the application, significantly reduces the risk of filter screen blockage, improves filtering efficiency, mixing plate breaks flue gas stratification by high-speed rotation, eliminates the influence of flow fluctuation and uneven composition, ensures sampling gas uniformity, prevents flue gas composition stratification or flow fluctuation, easily leads to sampling gas mixing insufficient, causes subsequent analysis detection deviation problem.

Description

Technical Field

[0001] This utility model belongs to the field of sampling probe technology, specifically relating to a sampling probe for flue gas emission monitoring. Background Technology

[0002] With increasingly stringent environmental regulations, flue gas emission monitoring technology has become a crucial link in industrial pollution control, as flue gas emissions are a serious source of atmospheric pollution. Various waste gases are emitted during industrial combustion and production processes. Volatile organic compounds in coatings are a major cause of air pollution. Therefore, monitoring of emitted waste gases is necessary, requiring a sampling probe for flue gas emission monitoring.

[0003] Chinese Patent Publication No. CN221926283U discloses a sampling probe for monitoring flue gas from a fixed pollution source, relating to the field of flue gas monitoring. A second motor drives a transmission gear via its output shaft. This transmission gear, through meshing with a rack, causes a protective block to slide, preventing it from blocking the air inlet. The system waits for gas to enter the gas chamber, then activates the second motor to seal the air inlet again. The first motor, via its output shaft, drives a lead screw to rotate. This lead screw, connected to a pusher via a thread, slides within the gas chamber, pushing the sample from the air inlet to the air outlet, allowing it to enter the detection equipment for testing. The use of a protective block and pusher facilitates flue gas sampling, reduces contamination from impurities, and increases detection accuracy. The probe includes a main body, protective components, and a pushing component. This application improves the purity of samples collected by the sampling probe and enhances monitoring accuracy.

[0004] While the sampling probes for monitoring flue gas from stationary pollution sources mentioned above can improve the purity of the samples collected by the sampling probes, the devices lack an active mixing structure. When the flue gas components are stratified or the flow rate fluctuates, the sampled gas is easily not mixed sufficiently, making it difficult to ensure gas uniformity and causing deviations in subsequent analysis and detection. Therefore, we propose a sampling probe for monitoring flue gas emissions. Utility Model Content

[0005] To address the problem that the aforementioned devices lack an active mixing structure, leading to insufficient mixing of the sampled gas when flue gas components stratify or flow rates fluctuate, thus failing to ensure gas homogeneity and causing deviations in subsequent analysis and detection, this invention provides a sampling probe for flue gas emission monitoring that achieves active mixing to meet the monitoring needs of complex industrial environments.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sampling probe for flue gas emission monitoring, comprising a sampling probe body, an air inlet fixed on one side of the sampling probe body, an installation groove on one side above the sampling probe body, a filter box placed in the installation groove, and filter screens fixed on both sides of the filter box;

[0007] A drive motor is bolted to one side of the sampling probe body, and a linkage rod is fixed to the drive end of the drive motor. A mixing plate is fixed to the outer wall of the linkage rod.

[0008] As a preferred embodiment of the sampling probe for flue gas emission monitoring according to this utility model, a sealing plate is movably installed on one side of the air inlet end, a lifting block is fixed at one end above the sealing plate at the air inlet end, and a telescopic push rod is connected below the lifting block.

[0009] As a preferred embodiment of the sampling probe for flue gas emission monitoring according to this utility model, an outlet end is fixed on one side of the bottom of the sampling probe body, and an outlet baffle is movably installed above the outlet end.

[0010] As a preferred embodiment of the sampling probe for flue gas emission monitoring according to this utility model, a nut block is fixed on one side below the exhaust baffle, a transmission screw is inserted inside the nut block, and a transmission motor is fixed at one end of the transmission screw.

[0011] As a preferred embodiment of the sampling probe for flue gas emission monitoring according to this utility model, the filter box is engaged with the main body of the sampling probe through the mounting groove, a limiting rotating plate is movably installed on the upper side of one side of the filter box, and the filter screen is a hollow mesh structure.

[0012] In a preferred embodiment of the sampling probe for flue gas emission monitoring according to this utility model, the drive motor forms a rotating structure with the mixing plate through the linkage rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This application uses a double-layer hollowed-out filter to classify and intercept particulate matter in flue gas, which significantly reduces the risk of filter clogging and improves filtration efficiency. The mixing plate forcibly breaks the flue gas stratification through high-speed rotation, eliminating the influence of flow rate fluctuations and uneven composition, ensuring the uniformity of the sampled gas, and preventing the problem that the device lacks an active mixing structure. When the flue gas composition is stratified or the flow rate fluctuates, it is easy to cause insufficient mixing of the sampled gas, making it difficult to ensure gas uniformity and causing deviations in subsequent analysis and detection. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the external planar structure of the present invention;

[0017] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A;

[0018] Figure 4 This is a schematic diagram of the external three-dimensional structure of this utility model.

[0019] In the diagram: 1. Sampling probe body; 2. Air inlet; 3. Sealing plate; 4. Lifting block; 5. Telescopic push rod; 6. Mounting slot; 7. Filter box; 8. Filter screen; 9. Air outlet baffle; 10. Nut block; 11. Transmission screw; 12. Transmission motor; 13. Air outlet; 14. Drive motor; 15. Linkage rod; 16. Mixing plate; 17. Limiting rotating plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] like Figures 1-4 As shown;

[0023] A sampling probe for flue gas emission monitoring includes a sampling probe body 1, an air inlet end 2 fixed to one side of the sampling probe body 1, an installation groove 6 opened on the upper side of the sampling probe body 1, a filter box 7 placed in the installation groove 6, and filter screens 8 fixed on both sides of the filter box 7; a drive motor 14 is bolted to one side of the sampling probe body 1, a linkage rod 15 is fixed to the drive end of the drive motor 14, and a mixing plate 16 is fixed to the outer wall of the linkage rod 15.

[0024] In this implementation scheme: the double-layer perforated filter screen 8 performs graded interception of particulate matter in the flue gas, significantly reducing the risk of filter screen clogging and improving filtration efficiency. The mixing plate 16 forcibly breaks the flue gas stratification through high-speed rotation, eliminating the influence of flow rate fluctuations and uneven composition, and ensuring the uniformity of the sampled gas.

[0025] Furthermore:

[0026] In an optional embodiment, a sealing plate 3 is movably installed on one side of the air intake end 2, and a lifting block 4 is fixed at one end above the sealing plate 3 of the air intake end 2. A telescopic push rod 5 is connected to the lower part of the lifting block 4.

[0027] In this implementation plan: the telescopic push rod 5 controls the sealing plate 3 to precisely open and close the air inlet end 2, and quickly seals after sampling to prevent external impurities from seeping in.

[0028] Furthermore:

[0029] In an optional embodiment, an air outlet 13 is fixed to one side of the bottom of the sampling probe body 1, and an air outlet baffle 9 is movably installed above the air outlet 13.

[0030] In this implementation scheme: the gas outlet baffle 9 completely seals the gas outlet 13 during the non-sampling stage to prevent the monitoring instrument from being interfered with by the external environment. At the same time, it can be sealed and linked with the gas inlet 2 to form a closed sampling cavity to ensure the integrity of the gas transmission path.

[0031] Furthermore:

[0032] In an optional embodiment, a nut block 10 is fixed to one side below the air outlet baffle 9, and a transmission screw 11 is inserted inside the nut block 10. A transmission motor 12 is fixed to one end of the transmission screw 11.

[0033] In this implementation scheme: the transmission motor 12 drives the transmission screw 11 to precisely control the opening and closing of the air outlet baffle 9.

[0034] Furthermore:

[0035] In an optional embodiment, the filter box 7 is engaged with the sampling probe body 1 via the mounting groove 6, a limiting rotating plate 17 is movably installed on the upper side of one side of the filter box 7, and the filter screen 8 has a hollow mesh structure.

[0036] In this implementation scheme: the double-layer hollowed-out filter screen 8 inside the filter box 7 can classify and intercept particulate matter, which can effectively reduce the risk of clogging and improve filtration efficiency. The filter box 7 can be easily disassembled by rotating the limiting plate 17.

[0037] Furthermore:

[0038] In an optional embodiment, the drive motor 14 forms a rotating structure with the mixing plate 16 via the linkage 15.

[0039] In this implementation scheme: the drive motor 14 can drive the mixing plate 16 to rotate at high speed through the linkage rod 15, forcibly breaking up the stratified airflow in the flue gas and promoting uniform mixing of gas components, eliminating sampling deviations caused by flow rate fluctuations or component stratification.

[0040] Working principle: During sampling, the outlet 13 is connected to the inlet of the monitoring instrument, and the outlet 13 is in a closed state. The telescopic push rod 5 is activated, and the telescopic push rod 5 retracts, driving the lifting block 4 to move the sealing plate 3 away from the inlet 2. Then, the inlet 2 is connected to the flue gas emission pipe, and the flue gas can enter the sampling probe body 1 through the inlet 2. Next, the flue gas first passes through the double-layer hollow filter screen 8 in the filter box 7, which classifies and intercepts particulate matter, effectively reducing the risk of blockage and improving filtration efficiency. After the flue gas enters the sampling chamber, the drive motor 14 is started, which drives the mixing plate 16 to rotate at high speed through the linkage rod 15, forcibly breaking up the stratified airflow in the flue gas and promoting the uniformity of gas composition. Mixing eliminates sampling deviations caused by flow rate fluctuations or component stratification; then, the conveyor motor 12 is started, which drives the conveyor screw 11 to rotate, horizontally conveying the nut block 10 and the outlet baffle 9. At this time, the outlet end 13 can be opened, and the gas in the sampling chamber can enter the monitoring instrument for monitoring through the outlet end 13; finally, after use, the telescopic push rod 5 pushes the sealing plate 3 to reset and seal the inlet end 2 to avoid interference from external impurities. At the same time, the conveyor motor 12 drives the conveyor screw 11 to rotate, driving the nut block 10 and the outlet baffle 9 to reset and seal the outlet end 13. When the filter box 7 needs to be replaced, it can be quickly disassembled by simply rotating the limit plate 17.

[0041] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sampling probe for monitoring flue gas emissions, comprising a sampling probe body (1), characterized in that: An air inlet (2) is fixed on one side of the sampling probe body (1), and an installation groove (6) is provided on one side above the sampling probe body (1). A filter box (7) is placed in the installation groove (6), and filter screens (8) are fixed on both sides of the filter box (7). A drive motor (14) is bolted to one side of the sampling probe body (1). A linkage rod (15) is fixed to the drive end of the drive motor (14). A mixing plate (16) is fixed to the outer wall of the linkage rod (15).

2. The sampling probe for flue gas emission monitoring according to claim 1, characterized in that: A sealing plate (3) is movably installed on one side of the air intake end (2), and a lifting block (4) is fixed on one end above the sealing plate (3) of the air intake end (2), and a telescopic push rod (5) is connected below the lifting block (4).

3. The sampling probe for flue gas emission monitoring according to claim 1, characterized in that: An air outlet (13) is fixed on one side of the bottom of the sampling probe body (1), and an air outlet baffle (9) is movably installed above the air outlet (13).

4. A sampling probe for flue gas emission monitoring according to claim 3, characterized in that: A nut block (10) is fixed on one side below the air outlet baffle (9). A transmission screw (11) is inserted inside the nut block (10). A transmission motor (12) is fixed at one end of the transmission screw (11).

5. A sampling probe for flue gas emission monitoring according to claim 1, characterized in that: The filter box (7) is engaged with the sampling probe body (1) through the mounting groove (6). A limiting rotating plate (17) is movably installed on the upper side of one side of the filter box (7). The filter screen (8) is a hollow mesh structure.

6. A sampling probe for flue gas emission monitoring according to claim 1, characterized in that: The drive motor (14) forms a rotating structure with the mixing plate (16) through the linkage rod (15).

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