A gas pollution control effect detection device including atmospheric oxidation simulation

Abstract

The present invention relates to the field of environmental protection, and specifically discloses a gas pollution control effect detection device containing atmospheric oxidation simulation. It comprises a reaction chamber, in which a plurality of sealing units are arranged, the sealing units comprise a sealing bag and a bag opening sealing assembly, the bag opening sealing assembly comprises a sealing sleeve and a sealing plug, the sealing sleeve is fixed to the bag opening of the sealing bag, the sealing sleeve is provided with an exhaust port connected to the sealing bag, and the sealing plug is detachably connected to the sealing sleeve; an air pipe is provided, and the air pipe can be detachably connected to any exhaust port; the sealing bags of the plurality of sealing units are sequentially sleeved from the inside to the outside, the bag opening of the sealing bag located on the inside passes through the bag opening of the sealing bag located on the outside and the sealing sleeve, and the sealing sleeves of adjacent sealing bags are detachably connected. The gas pollution control effect detection device containing atmospheric oxidation simulation in the present invention solves the problem of inconvenient gas extraction in the reaction chamber.

Description

Technical Field

[0001] The present invention relates to the field of environmental protection, and in particular to a gas pollution control effect detection device including atmospheric oxidation simulation. Background Art

[0002] The atmosphere is a mixture of nitrogen, oxygen, carbon dioxide, water vapor, solid impurity particles, etc. in a certain proportion. The composition of the atmosphere will also change due to multiple reasons such as the emission of pollutants in industry, human life, transportation, volcanic eruptions, etc. When the concentration of pollutants in the atmosphere reaches a certain level, it will cause air pollution, endanger human health, and cause environmental problems such as acid rain. Therefore, how to control air pollution is also an issue that experts and scholars are actively exploring.

[0003] There are many types of atmospheric pollutants, primarily including gaseous pollutants and solid particulate pollutants. Gaseous pollutants include sulfur oxides, carbon monoxide, nitrogen oxides, hydrocarbons, chlorine, vaporized hydrogen, fluorides, and chlorinated hydrocarbons, while solid particulate pollutants include suspended particulates, soot, black smoke, acid mist, and dust. Furthermore, after entering the atmosphere, various pollutants undergo oxidation reactions under various conditions, such as temperature, light, and lightning. Therefore, the composition of the atmosphere is complex and varies from region to region. Simply studying the control of a single pollutant is unlikely to lead to overall improvement in the atmospheric pollution of that region.

[0004] At present, there has emerged a system and method for simulating the photochemical reactions of multiple atmospheric pollutants, as shown in application number CN202210853114.5. An information processing device is set up to analyze the types and composition of typical atmospheric pollutants in industrial sites, obtain on-site meteorological parameters, determine the initial conditions required for the current simulation experiment, and analyze the impact of various photochemical reaction pollutants on ozone generation; a gas preparation device is used to configure the standard gas system to be tested according to the types and composition of typical atmospheric pollutants and combined with on-site meteorological parameters; a reaction device is used to provide a corresponding experimental environment for the mixing and photochemical reaction of the standard gas system to be tested; a detection device is connected to the outlet of the reaction device and is used to detect the concentration changes of photochemical reaction pollutants including various reactants and various products.

[0005] However, in actual operation, it was found that the above-mentioned system can only be used for on-site testing and experiments at polluted sites, which greatly limits the experimental space. Secondly, some polluted gases contain particulate matter, and some gases react with each other to produce particulate matter. These particles can adhere to the reaction chamber, causing a significant decrease in the concentration of particulate matter in the gas, resulting in large errors in the detection of particulate matter concentration. Moreover, the particles attached to the reaction chamber need to be repeatedly cleaned to remove after each experiment, otherwise they will interfere with the next experiment. When the particle size is small or the reaction chamber is located a certain distance from the water source, it will become difficult to clean. Finally, the containers currently used to contain various gases and provide space for gas reactions are usually of fixed size. When detecting gases, a powered structure such as an air pump is required to extract the gas. When a large amount of gas needs to be removed, a negative pressure is formed in the container, making it difficult to continue to extract the gas. While re-introducing gas into the container to balance the internal and external pressures can reduce the extraction difficulty, it also affects the content of each component in the gas, resulting in reduced detection accuracy. Summary of the Invention

[0006] The present invention aims to provide a gas pollution control effect detection device including atmospheric oxidation simulation to solve the problem of inconvenience in gas extraction in a reaction chamber.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a gas pollution control effect detection device containing atmospheric oxidation simulation, including a reaction chamber, a plurality of sealing units are arranged in the reaction chamber, the sealing unit includes a sealing bag and a bag sealing assembly, the bag sealing assembly includes a sealing sleeve and a sealing plug, the sealing sleeve is fixed to the bag opening of the sealing bag, the sealing sleeve is provided with an exhaust port connected to the sealing bag, and the sealing plug is detachably connected to the sealing sleeve; an air pipe is provided, and the air pipe can be detachably connected to any exhaust port; the sealing bags of the plurality of sealing units are sequentially arranged from the inside to the outside, the bag opening of the sealing bag located on the inside passes through the bag opening of the sealing bag located on the outside and the sealing sleeve, and the sealing sleeves of adjacent sealing bags are detachably connected.

[0008] The beneficial effects of this program are:

[0009] 1. The sealing bag in this scheme is located in the reaction chamber. When various pollutant gases are introduced to simulate the atmospheric reaction experiment, all the pollutant gases are introduced into the sealing bag. At this time, the various pollutant gases will not contact the side walls of the reaction chamber, and the particles and droplets in the gas will not adhere to the side walls of the reaction chamber. After the reaction, the innermost sealing bag can be directly taken out to remove the particles attached to the inner wall of the sealing bag without cleaning the inner wall of the reaction chamber. It is more convenient to use and also avoids interference with the next simulation experiment due to incomplete cleaning of the side walls of the reaction chamber.

[0010] 2. In this solution, all gases are contained within a sealed bag. When the simulated atmosphere needs to be tested or some of the simulated atmosphere needs to be removed for treatment reaction testing, squeezing the bag can reduce the volume within the bag, allowing for quick removal without the need for a powered device such as an air pump. Furthermore, compared to a reaction chamber, the bag is a flexible structure. Once the simulated atmosphere is removed, the bag can reduce its volume to bring the internal air pressure into line with the external pressure. Therefore, no negative pressure will form within the bag, making it difficult to remove the simulated atmosphere the next time. There is no need to introduce new gas to balance the air pressure, thus preventing changes in the concentrations of the various reactants within the bag.

[0011] Secondly, when using an air pump to extract simulated atmosphere, if the simulated atmosphere contains particles or droplets, these particles and droplets will adhere to the air pump at the same time, making them difficult to clean. In this solution, the above-mentioned equipment is not required for extraction, and the presence of residues in the extraction equipment can be avoided, which can also avoid the extraction of the simulated atmosphere from being contaminated, thereby improving the accuracy of the detection.

[0012] When the polluted gas contains particulate matter or the polluted gas reaction produces particulate matter, even if the particulate matter is attached to the side wall of the sealed bag, when it is necessary to detect the concentration of particulate matter in the simulated atmosphere or to test the treatment effect of the simulated atmosphere containing particulate matter, the side wall of the sealed bag can be deformed by pulling and squeezing the sealed bag, thereby causing the particulate matter attached to the side wall of the sealed bag to fall off and enter the simulated atmosphere, reducing the error in the particulate matter concentration detection. At the same time, the particulate matter is taken out simultaneously when the simulated atmosphere is taken out, which facilitates the particulate matter treatment experiment. 4. Polluted gas can be introduced into each sealed bag at the same time. Since the inner cavity of each sealed bag is isolated from each other, the humidity in each sealed bag can be adjusted individually or the composition of the simulated atmosphere can be controlled. When simulating the atmospheric treatment effect in the experiment, different reaction reagents or adsorption materials can be introduced into each sealed bag to react simultaneously in parallel. Compared with using different containers separately, the sealed bags in this solution are located in the same reaction chamber, which is more convenient for unified control of conditions such as light and temperature.

[0013] Furthermore, the sealing sleeve includes a first tube body and a second tube body that are fixedly connected. The outer diameter and inner diameter of the first tube body are respectively smaller than the outer diameter and inner diameter of the second tube body. The first tube body is clamped with the second tube body of the adjacent sealing sleeve, and the exhaust port is located on the second tube body.

[0014] The beneficial effect of this solution is that the sealing sleeves installed on adjacent sealing bags can be connected in sequence, so that the corresponding sealing bag can be determined by the position of the sealing sleeve, thereby ventilating the corresponding sealing bag more conveniently and accurately.

[0015] Furthermore, a guide groove is provided on the outer wall of the first tube body along the axial direction.

[0016] The beneficial effects of this solution are as follows: the design of the guide groove enables the guide groove to connect the exhaust port with the corresponding sealing bag when adjacent sealing sleeves are connected to each other. At this time, the exhaust port can better ventilate or discharge the gas in the sealing bag: when the innermost sealing bag needs to be taken out, clean gas can be introduced between the innermost sealing bag and the sealing bag located outside the sealing bag. At this time, the introduced gas can increase the air pressure in the outer sealing bag and form an air layer between the two sealing bags, thereby preventing the outer sealing bag from flipping from the inside to the outside when the innermost sealing bag is pulled out; when ventilation is introduced into the innermost sealing bag, the volume of the inner sealing bag increases, and the residual gas in the outer sealing bag can be discharged without hindering the expansion of the inner sealing bag.

[0017] Furthermore, an opening is provided on a side wall of the reaction chamber, and a vertical plate is axially slidably connected to the reaction chamber. The side wall of the reaction chamber opposite to the opening is the bottom side wall, and a reaction chamber is formed between the bottom side wall and the vertical plate. The sealing bag is located in the reaction chamber, and an installation opening is provided on the vertical plate for the bag opening of the sealing bag to extend out.

[0018] The beneficial effects of this solution are as follows: the vertical plates in this solution slide along the side walls of the reaction chamber to change the volume of the reaction chamber, allowing the reaction chamber to simulate both small and large amounts of gas. Furthermore, because the simulated atmosphere is located within the packaging bag, smaller particles in the gas are unlikely to become lodged between the vertical plates and the reaction chamber, potentially blocking the plates or making them difficult to clean.

[0019] Furthermore, the vertical plate includes an external frame and a push plate. The external frame is in sliding cooperation with the reaction chamber. The push plate is arranged on the external frame and is in sliding cooperation with the external frame. The external frame is provided with an adjustment component for positioning the push plate.

[0020] The beneficial effect of this solution is that when part of the simulated atmosphere needs to be taken out for testing, the push plate is pushed into the reaction chamber to squeeze the sealed bag, and the gas can be quickly taken out without an air pump, which is simple to operate.

[0021] Furthermore, the adjustment assembly includes a bracket, a screw and a nut seat. The bracket is fixed to the external frame, and the nut seat rotates with the bracket; the screw is fixedly connected to the push plate, and the screw extends along the sliding direction of the push plate. The screw passes through the nut seat and is threadedly connected to the nut seat.

[0022] The beneficial effects of this solution are: the adjustment component in this solution has a simple structure and stable movement. When the push plate is pushed outward by the gas, the cooperation between the screw and the nut seat can also achieve self-locking, preventing the push plate from sliding out of the reaction chamber.

[0023] Furthermore, a guide frame is fixed to the side wall of the external frame facing away from the reaction chamber, and the push plate is in sliding cooperation with the guide frame.

[0024] The beneficial effect of this solution is that the guide frame can limit the sliding of the push plate, preventing the push plate from falling off or tilting.

[0025] Furthermore, a negative pressure chamber is provided in the bottom side wall, and the negative pressure chamber is connected to a negative pressure pipe; a plurality of top exhaust units are provided on the side wall of the bottom side wall located in the reaction chamber, and the top exhaust unit includes a protrusion and a plurality of exhaust holes, the protrusion is fixed to the bottom side wall, and the plurality of exhaust holes are distributed along the circumference of the protrusion, and the exhaust holes connect the negative pressure chamber with the reaction chamber.

[0026] The beneficial effects of this solution are as follows: when the sealed bag is placed in the reaction chamber, since the sealed bag is not inflated, a gap exists between the sealed bag and the side wall of the reaction chamber. Gas exists in this gap, and when the sealed bag is inflated, it is difficult for the sealed bag to completely fill the reaction chamber under the influence of the gas pressure. The bottom side wall of this solution is provided with a vent hole, through which the gas outside the sealed bag can be discharged, avoiding obstruction when the gas to be reacted is passed into the sealed bag. Secondly, the protrusion provided on the bottom side wall can lift the part of the sealed bag opposite the vent hole, preventing the sealed bag from blocking the vent hole and making it difficult to discharge the gas between the sealed bag and the side wall of the reaction chamber.

[0027] Furthermore, one end of the air pipe away from the exhaust port is detachably connected to an electric mobility particle size spectrometer.

[0028] The beneficial effects of this solution are: the particle size of particulate matter in the simulated atmosphere can be detected by the electric mobility particle size spectrometer, which makes it easy to determine the rate of particulate matter generation when conducting treatment experiments on the simulated atmosphere, while avoiding the "false purification" situation where gaseous pollutants are believed to have been removed due to the conversion of gas phase into particulate matter, thereby improving the accuracy of judging whether the pollution has been treated.

[0029] Furthermore, a vibration unit is provided, which includes a vibration component and a rotation component. The vibration component is located in the reaction chamber and includes an end vibrator. The rotation component includes a turntable and a power component. The turntable is provided on the bottom side wall and rotates with the bottom side wall. An exhaust unit is also distributed on the turntable. The power component is connected to the turntable and is used to drive the turntable to rotate.

[0030] The beneficial effects of this solution are as follows: the turntable in this solution can absorb the outermost sealed bag through the exhaust unit, so that when the turntable rotates, it can drive the end of the outermost sealed bag to rotate, causing the outermost sealed bag to twist, thereby squeezing the inner sealed bag, causing the particles attached to the inner wall of the inner sealed bag to fall off. At the same time, when the screw rotates, it can drive the end vibrator to rotate, thereby vibrating the end of the sealed bag close to the push plate, causing the particles on the inner wall of the sealed bag to fall off. At the same time, because the turntable causes the outer sealed bag to twist, the side wall of the sealed bag is straightened under the action of the internal air pressure, so the vibration of the sealed bag is more likely to spread to other parts of the sealed bag, resulting in more obvious vibration, which is more effective in causing the particles attached to the inner wall of the sealed bag to fall off, further avoiding the occurrence of "false purification". BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A perspective view of Example 1 of the present invention;

[0032] Figure 2 A three-dimensional diagram of the bottom side wall in Example 1 of the present invention;

[0033] Figure 3 for Figure 2 A partial cross-sectional view of the side wall of the middle bottom in elevation;

[0034] Figure 4 for Figure 1 Right view of;

[0035] Figure 5 for Figure 1 Enlarged view of point A in the middle;

[0036] Figure 6 for Figure 1 A three-dimensional diagram of the middle bag opening sealing assembly;

[0037] Figure 7 for Figure 1 A front cross-sectional view of the middle bag opening sealing assembly;

[0038] Figure 8 The figure is a schematic diagram of the installation of two bag sealing components;

[0039] Figure 9 Schematic diagram of the bag opening sealing assembly when inflating the outer sealed bag;

[0040] Figure 10 A perspective view of embodiment 2 of the present invention;

[0041] Figure 11 is a three-dimensional diagram of the vibration unit in Example 3 of the present invention;

[0042] Figure 12 for Figure 11A three-dimensional image of the center turntable;

[0043] Figure 13 This is a partial schematic diagram of the reaction chamber in Example 3 of the present invention;

[0044] Figure 14 This is a three-dimensional diagram of another embodiment of the vibration unit in Example 3 of the present invention. DETAILED DESCRIPTION

[0045] The following is further described in detail through specific implementation methods:

[0046] The figure marks in the drawings of the specification include: reaction chamber 1, bottom side wall 11, protrusion 12, negative pressure chamber 13, exhaust hole 14, external frame 2, guide frame 21, push plate 3, screw 31, driving pulley 32, end vibrator 33, belt 34, bracket 4, retaining ring 41, nut seat 42, handle 43, second tube body 5, exhaust port 51, first tube body 52, guide groove 53, air pipe 54, sealing bag 6, rotating rod 7, side vibrator 71, driven pulley 72, turntable 8, and rotating shaft 81.

[0047] Example 1

[0048] Example 1 is basically as Figures 1 to 7 As shown, a gas pollution control effect detection device including atmospheric oxidation simulation includes a reaction chamber 1, the right end of the reaction chamber 1 is open, a vertical plate is slidably fitted inside the reaction chamber 1, the left side wall of the reaction chamber 1 is a bottom side wall 11, and a reaction chamber is formed between the bottom side wall 11 and the vertical plate. A negative pressure chamber 13 is provided in the bottom side wall 11, and the negative pressure chamber 13 is connected to a negative pressure pipe. A plurality of top exhaust units are provided on the side of the bottom side wall 11 facing the reaction chamber. The top exhaust unit includes a protrusion 12 and a plurality of exhaust holes 14. The protrusion 12 is hemispherical and welded to the bottom side wall 11. The plurality of exhaust holes 14 are evenly distributed along the circumference of the protrusion 12 and close to the connection between the protrusion 12 and the bottom side wall 11. The exhaust holes 14 are used to connect the negative pressure chamber 13 with the reaction chamber.

[0049] The vertical plate includes an external frame 2 and a push plate 3. The external frame 2 is in the shape of a square and slides with the reaction chamber 1. An L-shaped fixing plate is welded to the external frame 2 near the side wall of the reaction chamber 1. The side of the fixing plate away from the external frame 2 is in contact with the inner wall of the reaction chamber 1. The inner wall of the reaction chamber 1 is provided with a plurality of threaded holes along the axial direction. The fixing plate is provided with through holes that can be aligned with the threaded holes. After the external frame 2 is adjusted to the required position, the bolts are passed through the through holes and screwed into the threaded holes to lock the external frame 2. In actual implementation, axially extending scale lines can also be provided on the inner wall of the reaction chamber 1. The scale lines can more directly determine the position of the external frame 2 and the length of the reaction chamber. Since the cross-sectional area of ​​the reaction chamber 1 is determined, the volume of the reaction chamber can be estimated by multiplying the cross-sectional area of ​​the inner wall of the reaction chamber 1 by the length of the reaction chamber. This allows a better selection of a reaction chamber of corresponding volume according to the volume of the atmosphere to be simulated, and the external frame 2 is adjusted to the correct position.

[0050] A guide frame 21 is welded to the right wall of the external frame 2. The guide frame 21 in this embodiment includes a plurality of guide blocks, which are distributed in sequence along the inner circumference of the external frame 2. Specifically, the shape and size of the inner wall of the guide frame 21 in this embodiment are the same as those of the inner wall of the external frame 2. As an extension of the inner wall of the external frame 2, the push plate 3 is located on the inner side of the guide frame 21 and slides with the guide frame 21 and the external frame 2.

[0051] An adjustment assembly is provided on the external frame 2, comprising a bracket 4, a screw 31, and a nut seat 42. The bracket 4 is U-shaped, with its transverse portion opposing the push plate 3 and located to the right of the guide frame 21. Both ends of the bracket 4 are welded to the external frame 2. The bracket 4 is provided with a mounting hole opposing the nut seat 42. The nut seat 42 extends through the mounting hole and has an interference fit with the bracket 4. The nut seat 42 is provided on the bracket 4, and retaining rings 41 are bolted to the left and right side walls of the bracket 4 to limit the nut seat 42 and prevent it from falling out of the bracket 4. The screw 31 extends through the push plate 3 and is rotatably connected to the push plate 3 via a bearing. Annular limit plates are provided on both sides of the push plate 3, which are welded and fixed to the screw 31 to position the screw 31. The right end of the screw 31 extends through the nut seat 42 and is threadedly engaged with the nut seat 42. A handle 43 is welded to the right end of the screw rod 31 , and the screw rod 31 can be rotated more conveniently through the handle 43 , so that the screw rod 31 can be adjusted axially through the cooperation between the nut seat 42 and the screw rod 31 .

[0052] There are multiple sealing units in the reaction chamber, combined with Figure 8 and Figure 9Each sealing unit includes a sealing bag 6 and a bag sealing assembly. The sealing bag 6 is made of a flexible transparent plastic film. The sealing bag 6 includes a main body and a bag opening extending outward. The main bodies of multiple sealing bags 6 are sequentially arranged from the inside to the outside, and the bag opening of the inner sealing bag 6 also extends from the bag opening of the outer sealing bag 6 to the outside; the push plate 3 in this embodiment is provided with a mounting opening, and the bag openings of all sealing bags 6 extend from the mounting opening to the outside of the reaction chamber.

[0053] The bag opening sealing assembly includes a sealing sleeve and a sealing plug. The sealing sleeve comprises an integrally injection-molded first tube 52 and second tube 5. The inner and outer diameters of the first tube 52 are smaller than those of the second tube 5, respectively, creating a step between the inner walls of the first tube 52 and the second tube 5. The first tube 52 is sleeved over the bag opening of the sealing bag 6 and secured to the bag 6 via adhesive. The first tube 52 engages with the second tube 5 of the sealing sleeve on the adjacent outer sealing bag 6, allowing sealing sleeves on different sealing bags 6 to be interconnected. In actual implementation, the first tube 52 can also be threadedly connected to the second tube 5 of the adjacent outer sealing bag 6 to enhance connection strength. The first tube 52 or second tube 5 on the outermost sealing bag 6 engages with the mounting opening to seal it. A guide groove 53 is axially defined on the outer wall of the first tube body 52. ​​When the first tube body 52 abuts against the outer sealing sleeve, the end of the guide groove 53 is sealed by a step on the inner wall of the outer sealing sleeve. Three exhaust ports 51 are axially defined on the second tube body 5. A sealing plug engages with the second tube body 5 and, once installed, seals the second tube body 5 and the exhaust ports 51. In actual implementation, the multiple exhaust ports 51 may be distributed not only circumferentially along the second tube body 5 but also at different locations axially along the second tube body 5. This allows the multiple exhaust ports 51 to be opened sequentially by adjusting the sealing plug axially along the second tube body 5.

[0054] An electric mobility particle size spectrometer and multiple air pipes 54 are also provided. The air pipes 54 can be connected to any exhaust port 51. The electric mobility particle size spectrometer uses existing equipment. One of the air pipes 54 is connected to the inlet end of the electric mobility particle size spectrometer. The electric mobility particle size spectrometer can detect the particle size of particulate matter in the simulated atmosphere, avoiding "false purification" when conducting treatment experiments on the simulated atmosphere.

[0055] The specific implementation process is as follows:

[0056] When conducting an atmospheric simulation experiment, first calculate the total volume of all polluted gases, then divide the total volume by the cross-section of the reaction chamber 1. The position of the outer frame 2 is determined and adjusted to the predetermined position according to the scale lines. The gas in all sealed bags 6 is then squeezed out, and the sealing plug is installed into the sealing sleeve on the innermost sealed bag 6 to seal the sealed bag 6. The sealed bag 6 is then placed into the reaction chamber through the installation port, and the bag opening sealing assembly is placed outside the reaction chamber. The negative pressure tube is connected to an external air pump, which gradually discharges the gas between the reaction chamber and the sealed bag 6. The flowing airflow causes the main body of the sealed bag 6 to move toward the side near the bottom sidewall 11, rather than accumulating on the side of the reaction chamber near the outer frame 2.

[0057] During the simulation, the sealing bag 6 is slid to the right to the right side of the exhaust port 51, and the polluted gas is introduced into the innermost sealing bag 6 through the exhaust port 51. In actual implementation, if the amount of each polluted gas is small, the air pipe 54 can be installed first, and the three polluted gases can be introduced into the sealing bag 6 at the same time through the three air pipes 54; when the polluted gas is large, the second tube body 5 can also be connected to an external larger pipe or the air outlet end of the air pump, and the polluted gas can be quickly pumped into the sealing bag 6 through a pipe with a larger diameter.

[0058] When the contaminated gas enters the sealing bag 6, it expands the sealing bag 6. At this time, the gas between the reaction chamber and the sealing bag 6 is discharged from the negative pressure hole and the negative pressure chamber 13. When the volume of the sealing bag 6 is large, the protrusion 12 can lift the sealing bag 6, thereby preventing the sealing bag 6 from completely closing the exhaust hole 14, which makes it difficult to discharge the gas between the sealing bag 6 and the bottom side wall 11, and the sealing bag 6 cannot fill the reaction chamber.

[0059] After all the polluted gases have passed into the sealing bag 6, the innermost sealing bag 6 is sealed with a sealing plug. During the reaction process or after the reaction, when the simulated atmosphere needs to be taken out for detection or for adsorption, adding reagents for treatment experiments, the sealing plug is slid to the right to open the exhaust port 51, and the push plate 3 is slid to the left through the handle 43. The sealing bag 6 can be squeezed to guide the simulated atmosphere out through the air pipe 54 connected to the exhaust port 51 without passing through an air pump. In actual implementation, it can avoid the gas being contaminated by pollutants such as particulate matter remaining in the air pump when the gas is extracted through the air pump. Therefore, the detection accuracy can be improved by directly squeezing the sealing bag 6 to take out the simulated atmosphere.

[0060] When there are many particles in the simulated atmosphere and it is necessary to remove the particles simultaneously for adsorption experiments or to detect the concentration of particles in the gas, when there is less simulated atmosphere in the sealing bag 6, the sealing bag 6 can be deformed by pushing the bag opening left and right at the installation opening, thereby causing particles attached to the inner wall of the sealing bag 6 to fall off. When there is more simulated atmosphere in the sealing bag 6, the push plate 3 can be slid to the right side of the vertical plate, and then the sealing bag 6 can be pushed more significantly through the opening on the inner periphery of the external frame 2, thereby increasing the deformation and vibration amplitude of the sealing bag 6 and achieving a better effect of particle shedding.

[0061] During the test, when a large amount of simulated atmosphere is taken out, the volume of the reaction chamber can be reduced by sliding the outer frame 2 to the left, so that the air pressure in the sealing bag 6 is balanced with the outside world without the need to introduce gas into the sealing bag 6, thereby avoiding the dilution of the simulated atmosphere in the sealing bag 6.

[0062] After the experiment, the innermost sealed bag 6 can be pulled to the right relative to the outer sealed bag 6 to remove the innermost sealed bag 6. After removal, a certain amount of undiluted simulated atmosphere is still retained in the sealed bag 6. At this time, the sealing plug on the sealed bag 6 can be closed and the sealed bag 6 can be used as a container for storing samples. The operation is simple.

[0063] In addition, when multiple simulations need to be performed simultaneously, different simulated reactions can be performed simultaneously in parallel by passing the polluted gas into different sealed bags 6: when passing the polluted gas into the outer sealed bag 6, the sealing sleeves on the outer and inner sealed bags 6 are rotated relative to each other, and the inner sealing sleeve is slid to the right relative to the outer sealing sleeve, so that a gap is formed between the inner first tube 52 and the step on the outer sealing sleeve, and the guide groove 53 on the inner first tube 52 is aligned with the exhaust port 51 on the outer second tube 5. At this time, the polluted gas can be passed into the outer sealed bag 6 through the exhaust port 51 on the outer second tube 5. Similarly, when aligned, squeezing the sealed bag 6 can also remove the simulated atmosphere in the outer sealed bag 6 from the exhaust port 51 on the outer second tube 5.

[0064] When one simulation experiment is completed and a second simulation experiment is needed, the innermost sealed bag 6 that has been contaminated is taken out, and the second sealed bag 6 from the inside to the outside becomes the innermost sealed bag 6. At this time, contaminated gas is introduced into the sealed bag 6 to quickly start the second simulation.

[0065] When all the sealing bags 6 are contaminated due to multiple simultaneous simulation experiments, the negative pressure tube is connected to the external air pump, and air is ventilated into the negative pressure chamber 13 through the air pump. The air flow enters the reaction chamber through the exhaust hole 14 to increase the volume of the reaction chamber, thereby increasing the speed of discharging the contaminated gas in the sealing bag 6.

[0066] In actual implementation, based on this embodiment, the light intensity and time in the reaction chamber can also be controlled by installing existing lighting equipment in the reaction chamber 1; installing existing heating structures and temperature sensors to control the temperature in the reaction chamber and control the temperature within the required range; and introducing water vapor into the sealing bag 6 through the exhaust port 51 to increase the humidity of the simulated atmosphere.

[0067] Example 2

[0068] On the basis of Example 1, Figure 10 As shown, in this embodiment, two reaction chambers 1 are provided, placed side by side, and each reaction chamber 1 is equipped with a vertical plate and multiple sealing units. In actual implementation, if the gas in one simulation is needed as the reaction gas for the next experiment without the particulate matter, the sealed bag 6 is connected to the innermost sealed bag 6 in the other reaction chamber 1 via the air pipe 54. Then, air is slowly ventilated into the negative pressure chamber 13, squeezing the contaminated sealed bag 6. The squeezing effect can expel the contaminated gas in the sealed bag 6 and automatically pass it into the sealed bag 6 in the other reaction chamber 1, allowing the two reactions to proceed sequentially in series. Since the gas enters the other sealed bag 6 directly from one sealed bag 6 without first being collected in a container, and then is passed into the reaction chamber 1 after cleaning the reaction chamber 1 for the next reaction, the next reaction starts faster and avoids leakage or contamination when the gas flows between the two containers, thereby improving the safety and accuracy of the experiment. Other operations in this embodiment are the same as those in Example 1 and will not be repeated in this embodiment.

[0069] Example 3

[0070] On the basis of Example 1, Figure 11 、 Figure 12 and Figure 13 As shown, in this embodiment, a vibration unit is provided, which includes a vibration component and a rotation component. The vibration component is arranged in the reaction chamber, including an end vibration member 33. The end vibration member 33 includes a plurality of vibration blocks. The vibration blocks are distributed along the circumference of the screw 31 and are welded and fixed to the screw 31, so that the rotation of the screw 31 can drive the vibration blocks to rotate synchronously.

[0071] The rotating assembly includes a turntable 8 and a power element. The turntable 8 is mounted on the bottom sidewall 11 and is coaxially integrally formed with a rotating shaft 81. The left end of the rotating shaft 81 extends through the bottom sidewall 11 and rotates with the bottom sidewall 11 via a bearing. The power element is a forward and reverse motor mounted on the reaction chamber 1. The output shaft of the power element is connected to the rotating shaft 81 via a coupling to drive the turntable 8 to rotate. The exhaust unit in this embodiment is located on the turntable 8.

[0072] During use of the device in this embodiment, before removing the gas containing a large amount of particulate matter, a negative pressure is first generated in the negative pressure chamber 13 via the negative pressure tube, causing the left end of the outermost sealed bag 6 to be adsorbed onto the turntable 8. The power element is then activated to control the rotation of the turntable 8, thereby causing the outermost sealed bag 6 to twist. In actual implementation, if there is a large amount of particulate matter, the power element can also be used to control the turntable 8 to rotate forward and reverse in sequence, thereby causing the particulate matter on the inner wall of the inner sealed bag 6 to fall off by resetting and contracting the outer sealed bag 6. While the outermost sealed bag 6 is twisted, the screw 31 is manually rotated to control the push plate 3 to move leftward, while the end vibrator 33 rotates synchronously, moving the right end of the sealed bag 6 and causing the particulate matter on the right end of the sealed bag 6 to fall off.

[0073] In actual implementation, combined with Figure 14 As shown, the vibration assembly may further include a rotating rod 7 and a plurality of side vibrating members 71. The end vibrating member 33 is fixed to the screw 31. The rotating rod 7 extends along the length of the reaction chamber 1 and can be driven by the screw 31. The plurality of side vibrating members 71 are sequentially distributed along the axial direction of the rotating rod 7. The side vibrating members 71 slide in conjunction with the rotating rod 7 and can rotate with the rotating rod 7. Specifically, the rotating rod 7 is close to the side wall of the reaction chamber 1 and extends along the length of the reaction chamber 1. The left end of the rotating rod 7 rotates with the bottom side wall 11 via a bearing, and the right end penetrates the external frame 2 and fits with a small gap between the external frame 2. This allows the external frame 2 to support the rotating rod 7 while also being able to slide leftward relative to the rotating rod 7. At the same time, the rotating rod 7 can also rotate relative to the external frame 2. The right end of the rotating rod 7 is splined to a sleeve, on which a driven pulley 72 is mounted. The screw 31 is keyed to a driving pulley 32, located between the end vibrator 33 and the push plate 3. A belt 34 is provided between the driven pulley 72 and the driving pulley 32, driving the rotating rod 7 through the screw 31. Several side vibrators 71 are plastic cams. These side vibrators 71 are arranged axially along the rotating rod 7 and splined to the rotating rod 7, allowing them to rotate with the rotating rod 7 and slide leftward along the rotating rod 7. In this embodiment, the inner wall of the reaction chamber 1 is also provided with a receiving groove extending along its length for mounting the rotating rod 7 and the side vibrators 71. In this configuration, rotation of the screw 31 drives the rotating rod 7, thereby vibrating the side vibrators 71. When the side vibrators 71 come into contact with the sealing bag 6, the sealing bag 6 vibrates, further promoting the removal of particles adhering to the inner wall of the sealing bag 6.

[0074] The above is only an embodiment of the present invention, and the common knowledge such as the specific technical solutions and / or characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the description can be used to interpret the content of the claims.

Claims

1. A gas pollution control effect detection device including atmospheric oxidation simulation, comprising a reaction chamber, characterized in that: The reaction chamber is provided with multiple sealing units, each of which includes a sealing bag and a bag opening sealing assembly, wherein the bag opening sealing assembly includes a sealing sleeve and a sealing plug, wherein the sealing sleeve is fixed to the bag opening of the sealing bag, the sealing sleeve is provided with an exhaust port connected to the sealing bag, and the sealing plug is detachably connected to the sealing sleeve; an air pipe is provided, and the air pipe can be detachably connected to any exhaust port; the sealing bags of the multiple sealing units are sequentially sleeved from the inside to the outside, the bag opening of the sealing bag on the inside passes through the bag opening of the sealing bag on the outside and the sealing sleeve, and the sealing sleeves of adjacent sealing bags are detachably connected; One side wall of the reaction chamber is provided with an opening, and a vertical plate is axially connected to the reaction chamber for sliding. The side wall of the reaction chamber opposite to the opening is the bottom side wall, and a reaction chamber is formed between the bottom side wall and the vertical plate. The sealing bag is located in the reaction chamber, and the vertical plate is provided with a mounting opening for the bag opening of the sealing bag to extend out; the vertical plate includes an external frame and a push plate, the external frame is slidably matched with the reaction chamber, the push plate is provided on the external frame and slidably matched with the external frame, and the external frame is provided with an adjustment component for positioning the push plate.

2. The gas pollution control effect detection device including atmospheric oxidation simulation according to claim 1, characterized in that: The sealing sleeve includes a first tube body and a second tube body that are fixedly connected. The outer diameter and inner diameter of the first tube body are respectively smaller than the outer diameter and inner diameter of the second tube body. The first tube body is clamped with the second tube body of the adjacent sealing sleeve, and the exhaust port is located on the second tube body.

3. The gas pollution control effect detection device including atmospheric oxidation simulation according to claim 2, characterized in that: A guide groove is provided on the outer wall of the first tube along the axial direction.

4. The gas pollution control effect detection device including atmospheric oxidation simulation according to claim 1, characterized in that: The adjustment assembly includes a bracket, a screw and a nut seat. The bracket is fixed to the external frame, and the nut seat rotates with the bracket; the screw is fixedly connected to the push plate, and the screw extends along the sliding direction of the push plate. The screw passes through the nut seat and is threadedly connected to the nut seat.

5. The gas pollution control effect detection device including atmospheric oxidation simulation according to claim 1, characterized in that: A guide frame is fixed to the side wall of the external frame facing away from the reaction chamber, and the push plate is in sliding cooperation with the guide frame.

6. The gas pollution control effect detection device including atmospheric oxidation simulation according to claim 4, characterized in that: A negative pressure chamber is provided in the bottom side wall, and the negative pressure chamber is connected to a negative pressure pipe; a plurality of top exhaust units are provided on the side wall of the bottom side wall located in the reaction chamber, and the top exhaust unit includes a protrusion and a plurality of exhaust holes, the protrusion is fixed to the bottom side wall, and the plurality of exhaust holes are distributed along the circumference of the protrusion, and the exhaust holes connect the negative pressure chamber with the reaction chamber.

7. The gas pollution control effect detection device including atmospheric oxidation simulation according to claim 1, characterized in that: One end of the air pipe away from the exhaust port is detachably connected to an electric mobility particle size spectrometer.

8. The gas pollution control effect detection device including atmospheric oxidation simulation according to claim 6, characterized in that: A vibration unit is provided, which includes a vibration component and a rotation component. The vibration component is located in the reaction chamber and includes an end vibrator. The rotation component includes a turntable and a power component. The turntable is provided on the bottom side wall and rotates with the bottom side wall. An exhaust unit is also distributed on the turntable. The power component is connected to the turntable and is used to drive the turntable to rotate.

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