Gas purification performance detection device capable of being used for photocatalysis

Abstract

The utility model relates to the technical field of gas purification, in particular to a gas purification performance detection device capable of being used for photocatalysis, which comprises a reaction cabin, a first gas circulating pump and a gas collecting bottle, the gas collection bottle is detachably arranged on a pipeline between the first gas circulating pump and the reaction cabin, the pipeline is used for guiding and conveying gas into the reaction cabin, the first gas circulating pump and the gas collection bottle are arranged, the gas purification performance detection device further comprises an absorption assembly, the absorption assembly is provided with a mounting interface, and the mounting interface is connected with the gas collection bottle. The mounting connector is matched with the gas collecting bottle, so that the gas collecting bottle can be mounted on the mounting connector, and the absorption assembly is used for absorbing gas in the gas collecting bottle. The gas purification amount is increased through a circulating purification method, dynamic measurement is converted into static measurement of gas in a gas collection bottle through circulation and collection in the gas collection bottle, and the problem that dynamic measurement cannot be achieved is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas purification technical field, especially a kind of gas purification performance detection device for photocatalysis. BACKGROUND

[0002] With the increasing enhancement of people's life quality and environmental protection consciousness, the research in the field of gas purification is increasingly valued. However, in the evaluation of gas purification performance, especially for the sample with weak purification effect, the detection accuracy of the existing detection device or method is still insufficient. At present, common air purification performance detection means includes gas purification dynamic test and air purification test chamber method.

[0003] Gas purification dynamic test evaluates the purification effect by making reaction gas flow uniformly through the device containing purification sample. However, for the sample with weak purification effect, it is difficult to achieve accurate measurement by this method because the change of reaction gas is subtle. On the other hand, air purification test chamber method introduces a certain amount of reaction gas or reagent that can generate reaction gas into the test chamber, and after a certain period of purification, the gas in the chamber is detected to evaluate the purification effect. However, this method has limitations such as difficulty in synchronizing the experiment of experimental group and blank group, inability to directly obtain specific degradation amount, difficulty in distinguishing between gas degradation and adsorption, etc. For example, in the case of strong adsorption of sample to reaction gas, it will significantly interfere with the test results, making it difficult to be objective and accurate. SUMMARY

[0004] The technical problem to be solved by the utility model is to solve one or more technical problems existing in the prior art and to provide at least one beneficial option or create conditions.

[0005] The solution to the technical problem of the utility model is a gas purification performance detection device for photocatalysis, which includes a reaction chamber, a first gas circulating pump and a gas collection bottle. The reaction chamber and the first gas circulating pump are connected by a pipeline. The gas collection bottle is detachably arranged on the pipeline between the first gas circulating pump and the reaction chamber. The pipeline is used to guide and transport gas into the reaction chamber, the first gas circulating pump and the gas collection bottle. The gas purification performance detection device for photocatalysis further includes an absorption assembly, which is provided with a mounting interface. The mounting interface is adapted to the gas collection bottle, so that the gas collection bottle can be mounted on the mounting interface. The absorption assembly is used to absorb the gas in the gas collection bottle.

[0006] The utility model discloses beneficial effect is: gas collecting bottle, reaction cabin and first gas circulating pump are connected through pipeline, and the gas in the system before testing is mixed evenly with the original air in the cabin body through circulating pump, realizes the uniformity of the gas in the testing device, guarantees the gas consistency of reaction cabin and gas collecting bottle, in addition, more importantly, the method of long -time circulation degradation of reaction gas in the system increases gas purification amount, then through gas collecting bottle collection, the dynamic gas concentration before reaction and the dynamic gas concentration after reaction are fixed in the gas concentration of gas collecting bottle collection, the measurement comparison of gas concentration in gas collecting bottle, change dynamic measurement into static measurement of gas collecting bottle gas, solve the problem of dynamic measurement, convenient to use, absorption subassembly is through the way of circulating gas washing, and the reaction gas is absorbed from the absorption pipe, and the subsequent gas purification effect detection is carried out.

[0007] As a further improvement of the above technical solution, the gas purification performance detection device further comprises a reaction gas cylinder and an exhaust device, the outlet end of the reaction gas cylinder is provided with a first on-off valve, the inlet end of the exhaust device is provided with a second on-off valve, the inlet end of the reaction cabin is connected to the first on-off valve through a pipeline, the inlet end of the reaction cabin is connected to the first gas circulating pump through a pipeline, the outlet end of the gas collecting bottle is connected to the first gas circulating pump through a pipeline, and the outlet end of the gas collecting bottle is connected to the second on-off valve through a pipeline.

[0008] As a further improvement of the above technical solution, through the control of the first on-off valve, the reaction gas in the reaction gas cylinder can be effectively injected into the reaction cabin and the gas collecting bottle, ensuring that there is a certain volume of reaction gas in these two key components. Through the control of the second on-off valve, the original gas in the reaction cabin and the gas collecting bottle can be discharged from the system through the exhaust device, thereby providing the necessary conditions for effective gas purification performance detection. This improvement not only improves the accuracy of detection, but also enhances the stability and reliability of the system, making the entire gas purification performance detection process more efficient and convenient.

[0009] As a further improvement of the above technical solution, the reaction cabin comprises a cabin body and a light source, the inlet end of the cabin body is connected to the first on-off valve through a pipeline, the inlet end of the cabin body is connected to the outlet end of the first gas circulating pump through a pipeline, the outlet end of the cabin body is connected to the inlet end of the gas collecting bottle through a pipeline, a light path window is arranged on the upper surface of the cabin body, and the light source is arranged above the cabin body and opposite to the light path window.

[0010] As a further improvement of the above technical solution, the reaction chamber can more effectively carry out the detection work of photocatalytic samples. The arrangement of the light source enables the photocatalytic reaction to be carried out under specific light conditions, thereby improving the accuracy and efficiency of the detection. In addition, the design of the light path window enables the light of the light source to directly enter the reaction chamber, further enhancing the effect of the photocatalytic reaction and ensuring the reliability of the detection results.

[0011] As a further improvement of the above technical solution, the gas inlet end of the reaction chamber is provided with a third switch valve, the gas outlet end of the reaction chamber is provided with a fourth switch valve, the third switch valve is connected with the first switch valve through a pipeline, the third switch valve is connected with the gas outlet end of the first gas circulating pump through a pipeline, and the fourth switch valve is connected with the gas inlet end of the gas collecting bottle through a pipeline.

[0012] As a further improvement of the above technical solution, the flexibility of the system is enhanced, and the airtightness of the entire container is still fully guaranteed when the reaction chamber needs to be independently disassembled or maintained. Through this improvement, we can effectively prevent leakage problems that may occur during disassembly, thereby ensuring the safety and reliability of the entire system.

[0013] As a further improvement of the above technical solution, the gas inlet end of the gas collecting bottle is provided with a gas inlet valve, the gas outlet end of the gas collecting bottle is provided with a gas outlet valve, the gas inlet valve is connected with the fourth switch valve through a pipeline, the gas outlet valve is connected with the second switch valve through a pipeline, and the gas outlet valve is connected with the gas inlet end of the first gas circulating pump through a pipeline.

[0014] As a further improvement of the above technical solution, the flexibility of the system is enhanced, and the airtightness of the container can be maintained when the gas collecting bottle is independently disassembled, thereby avoiding the risk of gas leakage and improving the overall safety and reliability.

[0015] As a further improvement of the above technical solution, the gas outlet end of the first gas circulating pump is provided with a fifth switch valve, the gas inlet end of the first gas circulating pump is provided with a sixth switch valve, the fifth switch valve is connected with the third switch valve through a pipeline, and the sixth switch valve is connected with the gas outlet valve through a pipeline.

[0016] As a further improvement of the above technical solution, two switch valves can control the closed state of the gas path, and during maintenance and debugging, the flow direction is adjusted by changing the gas circulation direction of the gas circulating pump (the direction of the gas inlet and the gas outlet), and the gas path is adjusted by the gas switch valve, thereby improving the flexibility and controllability of the system, simplifying the maintenance and debugging process, and improving the overall work efficiency.

[0017] As a further improvement of the above technical solution, a plurality of gas collection bottles are provided, and all the gas collection bottles are connected in series through pipelines.

[0018] As a further improvement of the above technical solution, the beneficial effect is that when the gas is subjected to homogenization treatment, if it is necessary to remove a certain gas collection bottle as a blank control group for experiment, this design allows any one of the gas collection bottles to be easily removed and used as a blank control group. In this way, all the gas collection bottles are completely identical in function, and none of the gas collection bottles has a special position or function. This design not only simplifies the experimental operation, but also improves the reliability and repeatability of the experimental results.

[0019] As a further improvement of the above technical solution, the gas collection bottle comprises a bottle body, a gas inlet joint and a gas outlet joint, the bottle body, the gas inlet joint and the gas outlet joint are integrally formed, the gas inlet joint is arranged at the bottom end of the bottle body, the gas outlet joint is arranged at the top end of the bottle body, and the gas inlet joint and the gas outlet joint are both pagoda-shaped joints.

[0020] As a further improvement of the above technical solution, the beneficial effect is that the bottle body, the gas inlet joint and the gas outlet joint are integrally formed, which can avoid the adsorption of gas or leakage caused by interface gaps as much as possible. The conical structure design of the pagoda-shaped joint can ensure that the joint and the connecting piece are tightly fitted, thereby providing excellent sealing effect. This sealing effect can effectively prevent gas leakage at the connection, ensuring the purity and safety of the gas. Due to the special design of the pagoda-shaped joint, the overall structure after connection has high stability and is not easy to loosen, which is suitable for occasions that require frequent disassembly and installation, greatly improving the convenience and reliability of operation.

[0021] As a further improvement of the above technical solution, the gas inlet joint is arranged along the tangent line of the bottom end of the bottle body.

[0022] As a further improvement of the above technical solution, the beneficial effect is that during the gas collection and circulation process, the gas enters from the gas inlet joint at the bottom end and then is discharged from the gas outlet joint at the top end. The gas forms a rotational flow along the bottle wall in the bottle, and the generation of the rotational flow can fully agitate the gas in the bottle, effectively breaking the laminar flow state of the gas in the bottle, so that the gas in the gas collection bottle is more uniform, effectively preventing local accumulation of the gas in the bottle, and further improving the uniformity and stability of the gas.

[0023] As a further improvement of the above technical solution, the absorption assembly comprises an absorption pipe and a second gas circulation pump, the absorption pipe and the second gas circulation pump are connected through a pipeline, the gas collection bottle is detachably arranged on the pipeline between the second gas circulation pump and the absorption pipe, and the pipeline is used to guide and transport the gas into the absorption pipe, the second gas circulation pump and the gas collection bottle.

[0024] As a further improvement of the above technical solution, the second gas circulating pump continuously circulates the gas in the gas collecting pipe and guides it into the absorption pipe through the pipeline. The absorption pipe can effectively absorb the specific components in the gas, and the components to be detected are effectively enriched when the gas passes through the absorption pipe, thereby preparing for subsequent detection and analysis. This improvement not only improves the efficiency of gas treatment, but also ensures the accuracy and reliability of the detection results. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the gas circuit diagram of the gas collection and homogenization assembly provided by the utility model;

[0026] Figure 2 is the gas circuit diagram of the gas purification and circulation assembly provided by the utility model;

[0027] Figure 3 is the gas circuit diagram of the suction assembly provided by the utility model;

[0028] Figure 4 is the front view of the gas collecting bottle provided by the utility model;

[0029] Figure 5 is the top view of the gas collecting bottle provided by the utility model.

[0030] In the drawings: 1-reaction cabin, 2-first gas circulating pump, 3-gas collecting bottle, 301-gas collecting bottle A, 302-gas collecting bottle B, 4-absorption assembly, 401-absorption pipe, 402-second gas circulating pump, 5-reaction gas cylinder, 6-exhaust device, 7-cabin body, 8-light source, 9-light path window, 10-first on-off valve, 11-second on-off valve, 12-third on-off valve, 13-fourth on-off valve, 14-inlet valve, 15-outlet valve, 1401-first inlet valve, 1402-second inlet valve, 1501-first outlet valve, 1502-second outlet valve, 16-fifth on-off valve, 17-sixth on-off valve, 18-bottle body, 19-inlet joint, 20-outlet joint. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the above description of the embodiments uses the drawings. Obviously, the described drawings are only a part of the embodiments of the utility model, not all embodiments, and those skilled in the art can obtain other design schemes and drawings according to these drawings without creative labor.

[0032] The utility model discloses a concept, specific structure and the technical effect produced of the utility model will be clearly and completely described below in combination with the embodiment and the drawing, to fully understand the purpose, features and effects of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, and not all embodiments, based on the embodiment of the utility model, the other embodiments obtained by the person skilled in the art without paying creative labor all belong to the protection scope of the utility model. In addition, all the connection / connection relations mentioned in the paper do not mean that the components are directly connected, but can be composed of a better connection structure by adding or reducing the connection auxiliary parts according to the specific implementation situation. The various technical features in the utility model can be interactively combined without mutual contradiction and conflict.

[0033] With the increasing enhancement of people's life quality and environmental protection consciousness, the research in the field of gas purification is increasingly valued. However, in the evaluation of gas purification performance, especially for samples with weak purification effect, the existing detection device is still insufficient. At present, common air purification performance detection methods include gas purification dynamic test and air purification test chamber method.

[0034] The gas purification dynamic test allows the reaction gas to flow uniformly through the device containing the purification sample, and evaluates the purification effect according to the change of gas concentration. However, in the face of samples with weak purification effect, it is difficult to achieve accurate measurement through this way because the change of reaction gas is subtle. On the other hand, the air purification test chamber method introduces a certain amount of reaction gas or reagent that can generate reaction gas into the test chamber, and after a certain time of purification, the gas in the chamber is detected to evaluate the purification effect. However, this method has limitations such as difficulty in synchronizing the experiment of the experimental group and the blank group, inability to directly obtain the specific degradation amount, and in the case of strong adsorption of formaldehyde by the sample, it will significantly interfere with the test results, making it difficult to be objective and accurate.

[0035] Therefore, a gas purification performance detection device for photocatalysis, with reference to Figures 1-5 , including reaction chamber 1, first gas circulating pump 2 and gas collecting bottle 3, the reaction chamber 1 and the first gas circulating pump 2 are connected through pipeline, the gas collecting bottle 3 is detachably arranged on the pipeline between the first gas circulating pump 2 and the reaction chamber 1, the pipeline is used for guiding and conveying gas into the reaction chamber 1, the first gas circulating pump 2 and the gas collecting bottle 3, the gas purification performance detection device for photocatalysis further includes absorption assembly 4, the installation interface is arranged on the absorption assembly 4, the installation interface is matched with the gas collecting bottle 3, so that the gas collecting bottle 3 can be installed on the installation interface, and the absorption assembly 4 is used for absorbing the gas in the gas collecting bottle 3.

[0036] The gas collecting bottle 3, reaction chamber 1, and first gas circulation pump 2 are connected by pipelines, which realizes the uniformity of gas in the test device, ensures the consistency of gas between reaction chamber 1 and gas collecting bottle 3, and increases the gas purification capacity through circulation purification. By collecting gas through circulation and gas collecting bottle 3, the dynamic gas concentration before and after the reaction is fixed at the gas concentration collected by gas collecting bottle 3. The measurement and comparison of the gas concentration in gas collecting bottle 3 transforms the dynamic measurement into a static measurement of the gas in gas collecting bottle 3, solving the problem of not being able to measure dynamically, and making it convenient to use. The absorption component 4 absorbs the reaction gas through absorption tube 401 through circulation washing, and the gas purification effect is subsequently detected.

[0037] exist Figure 1 In this embodiment, the number of gas collecting bottles 3 is set to two, respectively referred to as gas collecting bottle A301 and gas collecting bottle B302. The inlet valve 14 of gas collecting bottle A301 is referred to as the first inlet valve 1401, and the outlet valve 15 of gas collecting bottle A301 is referred to as the first outlet valve 1501. The inlet valve 14 of gas collecting bottle B302 is referred to as the second inlet valve 1402, and the outlet valve 15 of gas collecting bottle B302 is referred to as the second outlet valve 1502. In use, according to... Figure 1 Connect the gas line, place the purified gas sample in reaction chamber 1, open the first switch valve 10, the second switch valve 11, the third switch valve 12, the fourth switch valve 13, the first inlet valve 1401, the first outlet valve 1501, the second inlet valve 1402, and the second outlet valve 1502, and close the fifth switch valve 16 and the sixth switch valve 17. Inject the reaction gas into chamber 7, gas collecting bottle A301, and gas collecting bottle B302. After a certain volume of reaction gas has been collected in chamber 7, gas collecting bottle A301, and gas collecting bottle B302, close the first switch valve 10. Open the second switch valve 11, open the fifth switch valve 16 and the sixth switch valve 17, start the first gas circulation pump 2, further homogenize the reaction gas in the chamber 7, gas collecting bottle A301 and gas collecting bottle B302, so that the gas concentration in the chamber 7 and gas collecting bottle 3 are consistent. After homogenization is completed, close the first gas circulation pump 2, close the first inlet valve 1401, the first outlet valve 1501, the second inlet valve 1402 and the second outlet valve 1502, and remove the gas collecting bottle B302 together with the second inlet valve 1402 and the second outlet valve 1502.

[0038] After removing gas collecting bottle B302, place gas collecting bottle A301 according to... Figure 2Connect to the gas circuit, open the third switch valve 12, the fourth switch valve 13, the first inlet valve 1401, the first outlet valve 1501, the fifth switch valve 16 and the sixth switch valve 17, close the first switch valve 10, the second switch valve 11, if the gas purification reaction needs photocatalysis, open the light source 8, then open the first gas circulating pump 2, carry out the gas purification circulation, at the same time the gas collecting bottle B302 is closed together with the second inlet valve 1402 and the second outlet valve 1502, and is placed in the same environment as the gas collecting bottle A301. After the gas purification circulation is completed, the first gas circulating pump 2 is closed, the third switch valve 12, the fourth switch valve 13, the first inlet valve 1401, the first outlet valve 1501, the fifth switch valve 16 and the sixth switch valve 17 are closed, and the gas collecting bottle A301 is taken together with the first inlet valve 1401 and the first outlet valve 1501.

[0039] After the gas collecting bottle A301 is taken off, the first gas circulating pump 2 is taken together with the fifth switch valve 16 and the sixth switch valve 17 and is called the second gas circulating pump 402, the gas collecting bottle A301 is connected to the gas circuit according to Figure 3 Connect the gas circuit, open the first inlet valve 1401, the first outlet valve 1501, the fifth switch valve 16 and the sixth switch valve 17, open the second gas circulating pump 402, absorb the reaction gas from the absorption tube 401 by circulating washing, and obtain the A sample of the gas in the gas collecting bottle A301; under the same environment, the gas collecting bottle B302 is connected to the gas circuit according to Figure 3 Connect the gas circuit, open the second inlet valve 1402, the second outlet valve 1502, the fifth switch valve 16 and the sixth switch valve 17, open the second gas circulating pump 402, absorb the reaction gas from the absorption tube 401 by circulating washing, and obtain the B sample of the gas in the gas collecting bottle B302, and then compare and detect the gas purification effect of the A sample and the B sample.

[0040] In order to effectively detect the gas purification performance, it is necessary to ensure that the reaction chamber 1 and the gas collection bottle 3 are filled with a certain volume of reaction gas. Therefore, in an embodiment, the gas purification performance detection device further comprises a reaction gas cylinder 5 and an exhaust device 6, the outlet end of the reaction gas cylinder 5 is provided with a first on-off valve 10, the inlet end of the exhaust device 6 is provided with a second on-off valve 11, the inlet end of the reaction chamber 1 is connected to the first on-off valve 10 through a pipeline, the inlet end of the reaction chamber 1 is connected to the first gas circulating pump 2 through a pipeline, the outlet end of the gas collection bottle 3 is connected to the first gas circulating pump 2 through a pipeline, and the outlet end of the gas collection bottle 3 is connected to the second on-off valve 11 through a pipeline. By controlling the first on-off valve 10, the reaction gas in the reaction gas cylinder 5 can be effectively injected into the reaction chamber 1 and the gas collection bottle 3, ensuring that there is a certain volume of reaction gas in these two key components. By controlling the second on-off valve 11, the original gas in the reaction chamber 1 and the gas collection bottle 3 can be discharged from the system through the exhaust device 6, thereby providing the necessary conditions for effective gas purification performance detection. This improvement not only improves the accuracy of detection, but also enhances the stability and reliability of the system, making the entire gas purification performance detection process more efficient and convenient.

[0041] The photocatalytic reaction needs to be carried out under light conditions. Therefore, in an embodiment, the reaction chamber 1 comprises a chamber body 7 and a light source 8, the inlet end of the chamber body 7 is connected to the first on-off valve 10 through a pipeline, the inlet end of the chamber body 7 is connected to the outlet end of the first gas circulating pump 2 through a pipeline, the outlet end of the chamber body 7 is connected to the inlet end of the gas collection bottle 3 through a pipeline, the upper surface of the chamber body 7 is provided with a light path window 9, and the light source 8 is arranged above the chamber body 7 and opposite to the light path window 9. The reaction chamber 1 can more effectively detect the detection of photocatalytic samples. The arrangement of the light source 8 enables the photocatalytic reaction to be carried out under specific light conditions, thereby improving the accuracy and efficiency of detection. In addition, the design of the light path window 9 enables the light of the light source 8 to directly enter the reaction chamber 1, further enhancing the effect of the photocatalytic reaction and ensuring the reliability of the detection results.

[0042] In the process of chemical reaction or experiment, the operator needs to disassemble and reassemble the reaction chamber 1. Therefore, in an embodiment, the gas inlet end of the reaction chamber 1 is provided with a third switch valve 12, the gas outlet end of the reaction chamber 1 is provided with a fourth switch valve 13, the third switch valve 12 is connected with the first switch valve 10 through a pipeline, the third switch valve 12 is connected with the gas outlet end of the first gas circulation pump 2 through a pipeline, and the fourth switch valve 13 is connected with the gas inlet end of the gas collection bottle 3 through a pipeline. The flexibility of the system is enhanced, and the airtightness of the whole container is still fully guaranteed when the reaction chamber 1 needs to be disassembled or maintained independently. Through this improvement, we can effectively prevent the leakage problem that may occur during disassembly, thereby ensuring the safety and reliability of the whole system.

[0043] In the process of chemical reaction or experiment, the operator must disassemble and reassemble the gas collection bottle 3. Therefore, in an embodiment, the gas inlet end of the gas collection bottle 3 is provided with a gas inlet valve 14, the gas outlet end of the gas collection bottle 3 is provided with a gas outlet valve 15, the gas inlet valve 14 is connected with the fourth switch valve 13 through a pipeline, the gas outlet valve 15 is connected with the second switch valve 11 through a pipeline, and the gas outlet valve 15 is connected with the gas inlet end of the first gas circulation pump 2 through a pipeline. The flexibility of the system is enhanced, and the airtightness of the container can be maintained when the gas collection bottle 3 is independently disassembled, thereby avoiding the risk of gas leakage and improving the overall safety and reliability.

[0044] In the process of maintenance and debugging of the equipment, the gas path system needs to be adjusted to ensure the best working effect. Therefore, in an embodiment, the gas outlet end of the first gas circulation pump is provided with a fifth switch valve, the gas inlet end of the first gas circulation pump is provided with a sixth switch valve, the fifth switch valve is connected with the third switch valve through a pipeline, and the sixth switch valve is connected with the gas outlet valve through a pipeline. The two switch valves can control the closed state of the gas path, and in the process of maintenance and debugging, the flow direction is adjusted by changing the gas circulation direction (inlet and outlet direction) of the gas circulation pump, and the gas path is adjusted by the gas switch valve, thereby improving the flexibility and controllability of the system, simplifying the maintenance and debugging process, and improving the overall working efficiency.

[0045] Preferably, the first gas circulation pump 2 further comprises a gas flow controller for controlling and adjusting the gas flow through the first gas circulation pump 2. Through this controller, the required gas flow value is set and adjusted to obtain different experimental samples.

[0046] In the process of detecting the gas purification performance, a blank control group is needed to be set to obtain a benchmark data for comparison with the experimental group. Therefore, in an embodiment, the gas collection bottle 3 is provided in plurality, and all the gas collection bottles 3 are connected in series through pipes. When a gas collection bottle 3 needs to be taken down as a blank control group after the gas is homogenized, this design makes any gas collection bottle 3 can be easily taken down and used as a blank control group. In this way, all the gas collection bottles 3 are completely identical in function, and none of the gas collection bottles 3 has a special position or function. This design not only simplifies the experimental operation, but also improves the reliability and repeatability of the experimental results.

[0047] The gas collection bottle 3 must have very good airtightness to ensure that no gas leaks or external air enters during the experiment, thereby ensuring the accuracy and reliability of the experimental results. Therefore, in an embodiment, the gas collection bottle 3 includes a bottle body 18, a gas inlet joint 19, and a gas outlet joint 20, which are integrally formed. The gas inlet joint 19 is arranged at the bottom end of the bottle body 18, and the gas outlet joint 20 is arranged at the top end of the bottle body 18. Both the gas inlet joint 19 and the gas outlet joint 20 are pagoda-shaped joints. The integrally formed design of the bottle body 18, the gas inlet joint 19, and the gas outlet joint 20 avoids the adsorption or leakage of gas caused by interface gaps as much as possible. The tapered structure design of the pagoda-shaped joint can ensure that the joint and the connecting piece are tightly fitted, thereby providing excellent sealing effect. This sealing effect can effectively prevent gas leakage at the connection, ensuring the purity and safety of the gas. Due to the special design of the pagoda-shaped joint, the overall structure after connection has high stability and is not easy to loosen, which is suitable for occasions that need to be frequently disassembled and installed, greatly improving the convenience and reliability of operation.

[0048] If the gas is not evenly distributed in the gas collection bottle 3, it may cause deviation in the experimental results, thereby affecting the reliability of the experimental data. Therefore, in an embodiment, the gas inlet joint 19 is arranged along the tangent line at the bottom end of the bottle body 18. During the gas collection and circulation process, the gas enters from the gas inlet joint 19 at the bottom end, and then is discharged from the gas outlet joint 20 at the top end. The gas forms a rotational flow along the bottle wall in the bottle, and the generation of the rotational flow can fully agitate the gas in the bottle, effectively breaking the laminar flow state of the gas in the bottle, thereby making the gas in the gas collection bottle 3 more uniform, effectively preventing local accumulation of the gas in the bottle, and further improving the uniformity and stability of the gas.

[0049] The reaction gas usually contains a plurality of different chemical components, and the complexity of these components can cause certain difficulties and challenges to the detection process. Thus, in an embodiment, the absorption assembly 4 comprises an absorption tube 401 and a second gas circulating pump 402 connected by a pipeline, and the gas collecting bottle 3 is detachably arranged on the pipeline between the second gas circulating pump 402 and the absorption tube 401, and the pipeline is used to guide and transport the gas into the absorption tube 401, the second gas circulating pump 402 and the gas collecting bottle 3. The second gas circulating pump 402 drives the gas in the gas collecting tube to flow continuously, and guides the gas into the absorption tube 401 through the pipeline. The absorption tube 401 can effectively absorb the specific components in the gas, and the components to be detected are effectively enriched when the gas passes through the absorption tube 401, so as to prepare for the subsequent detection and analysis work. This improvement not only improves the efficiency of gas treatment, but also ensures the accuracy and reliability of the detection result.

[0050] The preferred embodiments of the present application are described above, but the present application is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application. These equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A device for detecting the gas purification performance of photocatalysis, characterized in that, The gas purification performance detection device comprises a reaction chamber (1), a first gas circulating pump (2) and a gas collecting bottle (3), the reaction chamber (1) and the first gas circulating pump (2) are connected through a pipeline, the gas collecting bottle (3) is detachably arranged on the pipeline between the first gas circulating pump (2) and the reaction chamber (1), and the pipeline is used for guiding and conveying gas into the reaction chamber (1), the first gas circulating pump (2) and the gas collecting bottle (3); the gas purification performance detection device for photocatalysis further comprises an absorption assembly (4), the absorption assembly (4) is provided with a mounting interface, the mounting interface is matched with the gas collecting bottle (3), so that the gas collecting bottle (3) can be mounted on the mounting interface, and the absorption assembly (4) is used for absorbing gas in the gas collecting bottle (3).

2. The device for detecting the gas purification performance of photocatalysis according to claim 1, wherein The gas purification performance detection device further comprises a reaction gas cylinder (5) and an exhaust device (6), the reaction gas cylinder (5) is provided with a first on-off valve (10) at an outlet end, the exhaust device (6) is provided with a second on-off valve (11) at an inlet end, the inlet end of the reaction chamber (1) is connected with the first on-off valve (10) through a pipeline, the inlet end of the reaction chamber (1) is connected with the first gas circulating pump (2) through a pipeline, the outlet end of the gas collecting bottle (3) is connected with the first gas circulating pump (2) through a pipeline, and the outlet end of the gas collecting bottle (3) is connected with the second on-off valve (11) through a pipeline.

3. The device for detecting the gas purification performance of photocatalysis according to claim 2, wherein The reaction chamber (1) comprises a chamber body (7) and a light source (8), the inlet end of the chamber body (7) is connected with the first on-off valve (10) through a pipeline, the inlet end of the chamber body (7) is connected with the outlet end of the first gas circulating pump (2) through a pipeline, the outlet end of the chamber body (7) is connected with the inlet end of the gas collecting bottle (3) through a pipeline, and a light path window (9) is arranged on the upper surface of the chamber body (7); the light source (8) is arranged above the chamber body (7) and opposite to the light path window (9).

4. The device for detecting the gas purification performance of photocatalysis according to claim 3, wherein The inlet end of the reaction chamber (1) is provided with a third on-off valve (12), the outlet end of the reaction chamber (1) is provided with a fourth on-off valve (13), the third on-off valve (12) is connected with the first on-off valve (10) through a pipeline, the third on-off valve (12) is connected with the outlet end of the first gas circulating pump (2) through a pipeline, and the fourth on-off valve (13) is connected with the inlet end of the gas collecting bottle (3) through a pipeline.

5. The device for detecting the gas purification performance of photocatalysis according to claim 4, wherein The inlet end of the gas collecting bottle (3) is provided with an inlet valve (14), the outlet end of the gas collecting bottle (3) is provided with an outlet valve (15), the inlet valve (14) is connected with the fourth on-off valve (13) through a pipeline, the outlet valve (15) is connected with the second on-off valve (11) through a pipeline, and the outlet valve (15) is connected with the inlet end of the first gas circulating pump (2) through a pipeline.

6. The device for detecting the gas purification performance of photocatalysis according to claim 5, wherein The gas outlet end of the first gas circulating pump (2) is provided with a fifth switch valve (16), and the gas inlet end of the first gas circulating pump (2) is provided with a sixth switch valve (17), the fifth switch valve (16) is connected with the third switch valve (12) through a pipeline, and the sixth switch valve (17) is connected with the gas outlet valve (15) through a pipeline.

7. The device for detecting the gas purification performance of photocatalysis according to claim 1, wherein A plurality of gas collecting bottles (3) are arranged, and all the gas collecting bottles (3) are connected in series through pipelines.

8. The device for detecting the gas purification performance of photocatalysis according to claim 1, wherein The gas collecting bottle (3) comprises a bottle body (18), a gas inlet joint (19) and a gas outlet joint (20), the bottle body (18), the gas inlet joint (19) and the gas outlet joint (20) are integrally formed, the gas inlet joint (19) is arranged at the bottom end of the bottle body (18), the gas outlet joint (20) is arranged at the top end of the bottle body (18), and the gas inlet joint (19) and the gas outlet joint (20) are both pagoda-shaped joints.

9. The device for detecting the gas purification performance of photocatalysis according to claim 8, wherein The gas inlet joint (19) is arranged along the tangent line of the bottom end of the bottle body (18).

10. The device for detecting the gas purification performance of photocatalysis according to claim 1, wherein The absorption assembly (4) comprises an absorption pipe (401) and a second gas circulating pump (402), the absorption pipe (401) and the second gas circulating pump (402) are connected through a pipeline, the gas collecting bottle (3) is detachably arranged on the pipeline between the second gas circulating pump (402) and the absorption pipe (401), and the pipeline is used for guiding and conveying gas into the absorption pipe (401), the second gas circulating pump (402) and the gas collecting bottle (3).

Images