A flue gas sampling and drying device

Abstract

The application relates to the environmental protection detection technical field and discloses a flue gas sampling and drying device, which comprises a drying box, the upper surface of the drying box is fixedly connected with a mounting box, and the inside of the drying box is provided with two drying plates. The flue gas sampling and drying device is provided with drying plates, sliding blocks, chain wheels, chains and other components, the drying plates can dry and treat flue gas, when the drying plates are saturated, the chain wheel is rotated by rotating a rotating rod, the chain drives corresponding sliding blocks and drying plates to ascend and descend, the two drying plates are alternated, the chain wheel is locked by rotating a locking bolt, an air draught fan is started to extract air, the air is heated by an infrared radiation heating module, water molecules are desorbed by high temperature, the drying performance of the drying plates is recovered, hot air is discharged through an air outlet pipe, the device can regenerate and utilize the saturated drying plates, the drying performance of the drying plates on flue gas is guaranteed, the two drying plates can be alternately used, and the continuity of drying is guaranteed.

Description

Technical Field

[0001] This application relates to the field of environmental protection testing technology, specifically a flue gas sampling and drying device. Background Technology

[0002] Flue gas analyzers are devices that use electrochemical sensors to continuously analyze and measure the content of CO2, CO, NOx, SO2, and other flue gas. They are mainly used for handheld environmental monitoring of pollution emissions from small oil-fired or gas-fired boilers or near pollution sources. According to the usage method, they can be divided into handheld flue gas analyzers and fixed continuous recording flue gas analyzers.

[0003] An existing patent (publication number: CN219915028U) discloses a smoke and dust sampling pretreatment device and its sampling system. The smoke and dust sampling pretreatment device includes a gas washing bottle, a dryer, and a suction pump. The gas washing bottle, dryer, and suction pump are housed within a chassis. The inlet of the gas washing bottle receives smoke gas from the flue, and the outlet of the gas washing bottle is connected to the inlet of the dryer for drying the smoke gas. The suction pump provides power for sampling. This invention has a simple structure and reasonable design, ensuring accurate measurement of the dry smoke gas sampling volume, avoiding damage to the instrument from high temperature, high humidity, and gas corrosiveness, and thus extending the lifespan of the smoke and dust sampler.

[0004] However, in the above-mentioned scheme, it was found that when drying flue gas, the desiccant that has been saturated with adsorption cannot be regenerated and reused. This leads to the phenomenon of adsorption saturation of the desiccant after long-term use. At this time, the pores of the desiccant are occupied by water molecules, resulting in a reduction in adsorption capacity. When maintaining the whole dryer, it is necessary to shut down the machine. At this time, the drying operation cannot be used, resulting in a reduction in the continuity of detection. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a flue gas sampling and drying device that facilitates the regeneration and reuse of saturated drying plates, ensures the drying performance of the drying plates for flue gas, and allows for the alternating use of two drying plates to guarantee continuous drying. This solves the problem that the aforementioned solutions cannot regenerate saturated desiccants during flue gas drying, and that long-term use of desiccants leads to adsorption saturation, resulting in reduced adsorption capacity. This necessitates shutdown for maintenance of the entire dryer, during which drying operations are unavailable, leading to reduced detection continuity.

[0006] To achieve the above objectives, this application provides the following technical solution: a flue gas sampling and drying device, comprising a drying box, an installation box fixedly connected to the upper surface of the drying box, two drying plates inside the drying box, sliders fixedly connected to the front and back of each drying plate, grooves evenly arranged on the inner sidewall of the drying box, each groove penetrating the drying box and the installation box and extending to the inner top wall of the installation box, the outer surface of each slider slidingly connected to the inner wall of the corresponding groove, a rotating rod rotatably connected to the inner wall of the installation box, two sprockets fixedly connected to the outer surface of the rotating rod, two chains meshing on the outer surface of each sprocket, both ends of each chain fixedly connected to the upper surface of the corresponding slider, two infrared radiation heating modules fixedly installed on the inner sidewall of the installation box, induced draft fans fixedly installed on the left and right sides of the installation box, two air outlet pipes fixedly connected to the upper surface of the installation box, and locking bolts threadedly connected to the inner wall of the installation box.

[0007] To facilitate the heating and regeneration of saturated drying plates after long-term use, and to ensure the alternating use of two drying plates while maintaining their performance, the above scheme involves installing two drying plates inside the drying chamber. Slider blocks are installed on the front and back of each drying plate. A sliding groove is formed on the inner wall of the drying chamber, extending through it to the inner top wall of the mounting box above, thus positioning the groove. The connection between the groove and the slider allows the slider and drying plate to rise and fall. Rotating the rotating rod above the mounting box causes two sprockets to rotate, and the connection between the sprockets and the chain allows one of the drying plates to rise. One drying plate descends while the other descends to dry the flue gas. At this point, rotating the locking bolt locks the rotating rod. An induced draft fan draws in external air, which is then heated by an infrared radiation heating module. The heated air is dispersed onto the drying plates in the mounting box, where the high temperature causes water molecules to desorb, restoring the drying performance of the plates. The hot air carrying the water molecules is then discharged through the exhaust pipe. This device allows for the convenient heating and regeneration of long-term saturated drying plates, enabling the alternating use of two drying plates to ensure uninterrupted drying while maintaining the drying performance of the plates for flue gas.

[0008] Furthermore, two limiting plates are fixedly connected to the upper surface of the drying oven, and a pull rod is slidably connected to the inner wall of each limiting plate.

[0009] The above method involves installing a limiting plate on the upper surface of the drying oven as a fixed connection to achieve the installation of the limiting plate, and installing a pull rod on the inner wall of the limiting plate as a sliding connection to achieve the limiting of the pull rod.

[0010] Furthermore, each of the pull rods has a baffle fixedly connected to one end that is close to the other, and two guide rods are fixedly connected to the other side of each baffle. The outer surface of each guide rod is slidably connected to the inner wall of the corresponding limiting plate.

[0011] With the above solution, baffles are installed at the ends of the pull rods that are close to each other. The baffles can block the through holes of the drying plates alternately to prevent flue gas from flowing into the installation box. The guide rods are installed on the opposite sides of the corresponding baffles and the surfaces of the guide rods are connected to the inner walls of the corresponding limiting plates in a sliding connection. This allows the baffles to move under the limit of the guide rods when the operator pulls the pull rods.

[0012] Furthermore, each of the limiting plates has a spring fixedly installed on the side that is close to each other, and the other end of each spring is fixedly connected to the side that is far away from each other of the corresponding baffle.

[0013] With the above solution, a spring is installed on the side of the limiting plates that are close to each other, and the other end of the spring is fixed to the corresponding baffle. The spring can press against the baffle to prevent the baffle from loosening.

[0014] Furthermore, a base plate is fixedly installed on the bottom surface of the drying oven, and the main body of the flue gas analyzer is provided on the upper surface of the base plate.

[0015] The above scheme involves setting a base plate on the bottom of the drying chamber and placing the main body of the flue gas analyzer on the upper surface of the base plate, so that the base plate can support the drying chamber and the main body of the flue gas analyzer.

[0016] Furthermore, the front of the main body of the flue gas analyzer is provided with a display and control panel, and the left side of the drying chamber is connected to the right side of the main body of the flue gas analyzer via a pipe.

[0017] The above solution involves setting up a display and control panel on the front of the flue gas analyzer. The flue gas analyzer can detect the content of sulfur dioxide, nitrogen oxides, and carbon monoxide in the flue gas. The display and control panel allows the detection data to be displayed on the screen, and also allows control of the start / stop and data changes of the flue gas analyzer.

[0018] Furthermore, a protective shell is fixedly connected to the upper surface of the base plate, and a filter box is fixedly installed on the inner wall of the protective shell. Filter plate one and filter plate two are installed on the inner wall of the filter box.

[0019] The above scheme involves installing the protective shell on the upper surface of the base plate and installing the filter box on the inner wall of the protective shell to achieve the installation of the filter box. Filter plate 2 and filter plate 1 are installed inside the filter box, and the particulate matter in the flue gas is filtered through filter plate 1 and filter plate 2.

[0020] Furthermore, a mounting bracket is fixedly connected to the inner wall of the protective shell, an exhaust fan is fixedly installed on the inner wall of the mounting bracket, an air inlet pipe is fixedly installed at the input end of the exhaust fan, the output end of the exhaust fan is connected to the right side of the filter box through a pipe, and the left side of the filter box is connected to the right side of the drying box through a pipe.

[0021] The above scheme fixes the mounting bracket to the inner wall of the protective shell, forming a fixed connection to secure the mounting bracket. An exhaust fan is connected to the mounting bracket, and an air inlet pipe is also connected to the exhaust fan. The other end of the air inlet pipe is connected to the flue gas source, allowing the exhaust fan to transfer the flue gas through a pipe to the filter box for filtration. After filtration, the gas is transferred through a pipe to the drying chamber for drying, and finally enters the main body of the flue gas analyzer for testing.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects: This flue gas sampling and drying device comprises components such as a drying plate, a slider, a sprocket, and a chain. The drying plate dries the flue gas. When the drying plate is saturated, rotating the rotating rod causes the sprocket to rotate, which in turn causes the chain to move the corresponding slider and drying plate up and down, alternating between the two drying plates. Rotating the locking bolt locks the sprocket, and starting the induced draft fan draws in air. The air is heated by an infrared radiation heating module, and the high temperature causes water molecules to desorb, restoring the drying performance of the drying plate. The hot air is discharged through the exhaust pipe. This device allows for easy regeneration and reuse of the saturated drying plate, ensuring its drying performance for flue gas and allowing the two drying plates to be used alternately to ensure continuous drying. Pulling the lever moves the baffle, which is limited by the guide rod. At this time, the spring is compressed. When the lever is released, the baffle returns to its original position, blocking the alternating through holes of the drying plate and preventing flue gas from flowing into the installation box. This ensures drying efficiency while preventing air exchange between the installation box and the drying box. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the entire application; Figure 2 This is the overall main view structure diagram of this application; Figure 3 This is a diagram of the internal structure of the protective shell in this application; Figure 4 This is a diagram of the internal structure of the filter box in this application; Figure 5 This is a structural diagram showing the connection relationship between the slide and the slider in this application; Figure 6 This is a structural diagram showing the connection relationship between the chain and sprocket in this application; Figure 7 This is a diagram of the internal structure of the mounting box for this application.

[0024] In the picture: 1. Drying oven; 2. Mounting box; 3. Drying plate; 4. Slider; 5. Slide rail; 6. Rotating rod; 7. Infrared radiation heating module; 8. Exhaust fan; 9. Air outlet duct; 10. Locking bolt; 11. Sprocket; 12. Chain; 13. Limiting plate; 14. Pull rod; 15. Baffle; 16. Guide rod; 17. Spring; 18. Base plate; 19. Flue gas analyzer body; 20. Display and control panel; 21. Protective shell; 22. Filter box; 23. Filter plate two; 24. Filter plate one; 25. Mounting bracket; 26. Exhaust fan; 27. Air inlet duct. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] Please see Figure 5 , Figure 6 and Figure 7 This embodiment of a flue gas sampling and drying device includes a drying box 1, an installation box 2 fixedly connected to the upper surface of the drying box 1, two drying plates 3 inside the drying box 1, sliders 4 fixedly connected to the front and back of each drying plate 3, grooves 5 evenly spaced on the inner side wall of the drying box 1, each groove 5 penetrating the drying box 1 and the installation box 2 and extending to the inner top wall of the installation box 2, the outer surface of each slider 4 slidingly connected to the inner wall of the corresponding groove 5, a rotating rod 6 rotatably connected to the inner wall of the installation box 2, two sprockets 11 fixedly connected to the outer surface of the rotating rod 6, two chains 12 meshing on the outer surface of each sprocket 11, both ends of each chain 12 fixedly connected to the upper surface of the corresponding slider 4, two infrared radiation heating modules 7 fixedly installed on the inner side wall of the installation box 2, induced draft fans 8 fixedly installed on the left and right sides of the installation box 2, two air outlet pipes 9 fixedly connected to the upper surface of the installation box 2, and locking bolts 10 threadedly connected to the inner wall of the installation box 2.

[0027] Please see Figure 4 , Figure 5 and Figure 7 Two limiting plates 13 are fixedly connected to the upper surface of the drying oven 1. Each limiting plate 13 has a pull rod 14 slidably connected to its inner wall. The limiting plate 13 is installed on the upper surface of the drying oven 1 and is set as a fixed connection to realize the installation of the limiting plate 13. The pull rod 14 is installed on the inner wall of the limiting plate 13 and is set as a sliding connection to realize the limitation of the pull rod 14.

[0028] Please see Figure 5 and Figure 7 Each pull rod 14 has a baffle 15 fixedly connected to its close end, and two guide rods 16 fixedly connected to the far side of each baffle 15. The outer surface of each guide rod 16 is slidably connected to the inner wall of the corresponding limiting plate 13. The baffle 15 is installed at the close end of the pull rod 14 to block the through holes of the drying plate 3 alternately, preventing flue gas from flowing into the installation box 2. The guide rods 16 are installed on the far side of the corresponding baffle 15, and the surface of the guide rods 16 is connected to the inner wall of the corresponding limiting plate 13 in a sliding connection, so that when the operator pulls the pull rod 14, the baffle 15 moves under the limitation of the guide rods 16.

[0029] Please see Figure 7 Each limiting plate 13 has a spring 17 fixedly installed on the side of each plate that is close to each other. The other end of each spring 17 is fixedly connected to the side of the corresponding baffle 15 that is far from each other. The spring 17 is installed on the side of the limiting plates 13 that is close to each other, and the other end of the spring 17 is fixed to the corresponding baffle 15. The spring 17 can press against the baffle 15 to prevent the baffle 15 from loosening.

[0030] Please see Figure 1 , Figure 2 and Figure 3 A base plate 18 is fixedly installed on the bottom surface of the drying chamber 1, and a flue gas analyzer body 19 is provided on the upper surface of the base plate 18. The base plate 18 is provided on the bottom surface of the drying chamber 1, and the flue gas analyzer body 19 is provided on the upper surface of the base plate 18, so that the base plate 18 can support the drying chamber 1 and the flue gas analyzer body 19.

[0031] Please see Figure 1 , Figure 2 and Figure 3 The front of the flue gas analyzer body 19 is provided with a display and control panel 20. The left side of the drying chamber 1 is connected to the right side of the flue gas analyzer body 19 through a pipe. The flue gas analyzer body 19 can detect the content of sulfur dioxide, nitrogen oxides and carbon monoxide in the flue gas. The display and control panel 20 makes it easy to display the detection data on the screen. At the same time, it can control the start and stop of the flue gas analyzer body 19 and the data changes.

[0032] Please see Figure 2 , Figure 3 and Figure 4A protective shell 21 is fixedly connected to the upper surface of the base plate 18. A filter box 22 is fixedly installed on the inner wall of the protective shell 21. Filter plate 24 and filter plate 23 are installed on the inner wall of the filter box 22. The protective shell 21 is installed on the upper surface of the base plate 18, and the filter box 22 is installed on the inner wall of the protective shell 21 to realize the installation of the filter box 22. Filter plate 23 and filter plate 24 are installed inside the filter box 22, and the particulate matter in the flue gas is filtered through filter plate 24 and filter plate 23.

[0033] Please see Figure 3 and Figure 4 A mounting bracket 25 is fixedly connected to the inner wall of the protective shell 21. An exhaust fan 26 is fixedly installed on the inner wall of the mounting bracket 25. An air inlet pipe 27 is fixedly installed at the input end of the exhaust fan 26. The output end of the exhaust fan 26 is connected to the right side of the filter box 22 through a pipe. The left side of the filter box 22 is connected to the right side of the drying box 1 through a pipe. The mounting bracket 25 is fixed to the inner wall of the protective shell 21, which is a fixed connection to fix the mounting bracket 25. The exhaust fan 26 is connected to the mounting bracket 25, and the air inlet pipe 27 is connected to the exhaust fan 26. The other end of the air inlet pipe 27 is connected to the flue gas source, so that the exhaust fan 26 can transfer the flue gas through the pipe to the filter box 22 for filtration. After filtration, it is transferred through the pipe to the drying box 1 for drying treatment. Finally, it enters the main body 19 of the flue gas analyzer for detection.

[0034] This embodiment of a flue gas sampling and drying device includes components such as a drying plate 3, a slider 4, a sprocket 11, and a chain 12. The drying plate 3 dries the flue gas. When the drying plate 3 is saturated with adsorption, rotating the rotating rod 6 causes the sprocket 11 to rotate, which in turn causes the chain 12 to drive the corresponding slider 4 and the drying plate 3 to rise and fall, alternating between the two drying plates 3. Rotating the locking bolt 10 locks the sprocket 11, and starting the induced draft fan 8 draws in air. The air is then heated by the infrared radiation heating module 7, and the high temperature causes water molecules to desorb, restoring the drying performance of the drying plate 3. The hot air then passes through... The exhaust gas is discharged through the outlet duct 9, enabling the device to easily regenerate the saturated drying plate 3, ensuring the drying performance of the drying plate 3 for flue gas, and allowing the two drying plates 3 to be used alternately to ensure continuous drying. By pulling the pull rod 14, the baffle 15 is moved and limited by the guide rod 16. At this time, the spring 17 is compressed. When the pull rod 14 is released, the baffle 15 returns to its original position, which can block the through holes of the drying plate 3 alternately, preventing the flue gas from flowing into the installation box 2, ensuring the drying efficiency, and preventing air exchange between the installation box 2 and the drying box 1.

[0035] It should be noted that when the flue gas flows through the drying plate 3, the drying material in the drying plate 3 can intercept water molecules in the flue gas, thus avoiding inaccurate detection.

[0036] The working principle of the above embodiments is as follows: First, the exhaust fan 26 is started so that the air inlet pipe 27 can draw in the flue gas, which is then transmitted through the pipe to the filter box 22. The filter plates 24 and 23 in the filter box 22 filter particulate matter and other impurities in the flue gas. Then, the flue gas enters the drying box 1 through the pipe, where the drying plates 3 dry the flue gas, intercepting water molecules. The dried flue gas then enters the main body 19 of the flue gas analyzer for testing. The test data is displayed on the screen of the display and control panel 20. When the drying plates 3 in the drying box 1 are saturated, the corresponding lever 14 is pulled to move the baffle 15. At this time, the spring 17 is compressed. Then, the operator rotates the rotating rod 6, which drives the two sprockets 11 to rotate. The connection between the sprocket 11 and the chain 12 allows the chain 12 to drive the corresponding slider 4 and the drying plate 3 to rise and fall, thereby allowing the saturated drying plate 3 to rise into the installation box 2. The unused drying plate 3 enters the drying box 1 to continue drying. The pull rod 14 is released, causing the baffle 15 to block the through holes of the drying plate 3 alternately. At this time, the induced draft fan 8 is started to draw in air, which is heated by the infrared radiation heating module 7. The high temperature causes water molecules to desorb, restoring the drying performance of the drying plate 3 in the installation box 2. The hot air carrying water molecules is discharged through the air outlet pipe 9, realizing the effect of this device to easily regenerate the saturated drying plate 3, ensuring the drying performance of the drying plate 3 for flue gas, and allowing the two drying plates 3 to be used alternately to ensure the continuity of drying.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flue gas sampling and drying device, comprising a drying chamber (1), characterized in that: The upper surface of the drying box (1) is fixedly connected to the mounting box (2). The interior of the drying box (1) is provided with two drying plates (3). Each drying plate (3) has a slider (4) fixedly connected to its front and back sides. The inner sidewall of the drying box (1) is provided with equally spaced sliding grooves (5). Each sliding groove (5) passes through the drying box (1) and the mounting box (2) and extends to the inner top wall of the mounting box (2). The outer surface of each slider (4) is slidably connected to the inner wall of the corresponding sliding groove (5). The inner wall of the mounting box (2) is rotatably connected to a rotating rod (6). Two sprockets (11) are fixedly connected to the outer surface of the rotating rod (6). Two chains (12) are meshed on the outer surface of each sprocket (11). Both ends of each chain (12) are fixedly connected to the upper surface of the corresponding slider (4). Two infrared radiation heating modules (7) are fixedly installed on the inner wall of the mounting box (2). Fans (8) are fixedly installed on the left and right sides of the mounting box (2). Two air outlet pipes (9) are fixedly connected to the upper surface of the mounting box (2). Locking bolts (10) are threadedly connected to the inner wall of the mounting box (2).

2. The flue gas sampling and drying device according to claim 1, characterized in that: The upper surface of the drying oven (1) is fixedly connected to two limiting plates (13), and each limiting plate (13) has a pull rod (14) slidably connected to its inner wall.

3. The flue gas sampling and drying device according to claim 2, characterized in that: Each of the pull rods (14) has a baffle (15) fixedly connected to one end of each other, and two guide rods (16) fixedly connected to the other side of each baffle (15). The outer surface of each guide rod (16) is slidably connected to the inner wall of the corresponding limiting plate (13).

4. The flue gas sampling and drying device according to claim 3, characterized in that: Each of the limiting plates (13) has a spring (17) fixedly installed on the side that is close to each other, and the other end of each spring (17) is fixedly connected to the side that is far away from each other of the corresponding baffle (15).

5. The flue gas sampling and drying device according to claim 1, characterized in that: A base plate (18) is fixedly installed on the bottom surface of the drying oven (1), and a flue gas analyzer body (19) is provided on the upper surface of the base plate (18).

6. The flue gas sampling and drying device according to claim 5, characterized in that: The front of the flue gas analyzer body (19) is provided with a display and control panel (20), and the left side of the drying oven (1) is connected to the right side of the flue gas analyzer body (19) through a pipe.

7. The flue gas sampling and drying device according to claim 5, characterized in that: A protective shell (21) is fixedly connected to the upper surface of the base plate (18). A filter box (22) is fixedly installed on the inner wall of the protective shell (21). Filter plate one (24) and filter plate two (23) are installed on the inner wall of the filter box (22).

8. The flue gas sampling and drying device according to claim 7, characterized in that: The inner wall of the protective shell (21) is fixedly connected to a mounting bracket (25), and an exhaust fan (26) is fixedly installed on the inner wall of the mounting bracket (25). An air inlet pipe (27) is fixedly installed at the input end of the exhaust fan (26). The output end of the exhaust fan (26) is connected to the right side of the filter box (22) through a pipe. The left side of the filter box (22) is connected to the right side of the drying box (1) through a pipe.

Images