Laboratory waste gas treatment device and treatment method

Abstract

According to the laboratory waste gas treatment device and method, a fixed annular plate is installed on the rear end face of a waste gas treatment cabin, a through hole is formed in the middle of the fixed annular plate, a driving motor is installed in the middle of the side, away from the waste gas treatment cabin, of the fixed annular plate, and a driving shaft of the driving motor penetrates through the through hole to enter the waste gas treatment cabin; position fixing plates are symmetrically arranged at the left end and the right end of the end face of the side, away from the waste gas treatment cabin, of the fixing ring plate, a discharging cylinder is installed in the middle of the end face of the side, away from the fixing ring plate, of the waste gas treatment cabin, and a waste gas inlet cylinder is annularly arranged on the side end face of the waste gas treatment cabin; guide rails which are not connected with each other are arranged on the inner wall of each section of cabin body, a displacement bracket is mounted in each guide rail, a return spring is mounted on one side, far away from a gas inlet path of the waste gas inlet cylinder, in each guide rail, the return springs are connected with the displacement brackets, and a waste gas filter plate is mounted on each displacement bracket.

Description

Technical Field

[0001] The invention belongs to the field of waste gas treatment, and in particular relates to a laboratory waste gas treatment device and a treatment method. Background Art

[0002] At present, laboratory waste gas treatment devices play a vital role in modern laboratories, especially in the fields of chemistry, biology and materials science. The waste gas generated during the experiment often contains harmful gases and pollutants, posing a threat to the environment and the health of laboratory personnel. Therefore, it is particularly important to develop efficient and reliable waste gas treatment devices and treatment methods. However, the current waste gas treatment technology still has some significant defects in practical applications, which limits its performance and wide application.

[0003] Existing waste gas treatment devices are insufficient in terms of treatment efficiency. Many traditional waste gas treatment technologies, such as activated carbon adsorption, chemical washing and thermal oxidation, can remove harmful components in waste gas to a certain extent, but their treatment efficiency is often unsatisfactory when faced with complex waste gas components. For example, the removal rate of certain organic solvents and volatile organic compounds (VOCs) in high concentrations or complex mixed gases may be greatly reduced by traditional technologies. In addition, secondary pollution may occur during the treatment process, affecting the overall safety of the environment.

[0004] Existing technologies also lack adaptability and flexibility. The composition and concentration of laboratory exhaust often vary depending on the type of experiment and process, and many exhaust treatment devices are designed to be optimized for specific gases or concentration ranges. This single design makes it difficult for the equipment to effectively deal with multiple exhaust components. For example, when a laboratory needs to treat mixed exhaust of multiple chemicals, existing devices may not be able to take into account the treatment needs of all components, resulting in poor treatment results or even treatment failure.

[0005] Existing waste gas treatment devices have high requirements in terms of operating costs and maintenance. Many systems consume a lot of energy and chemical reagents during operation, which not only increases the operating costs of the laboratory, but also creates an additional burden on the environment. In addition, the frequency of equipment maintenance and replacement of parts is high, especially in high-intensity use environments, the wear and failure rate of the equipment is relatively high, resulting in increased maintenance costs. This high-cost operating model restricts some laboratories in choosing waste gas treatment technologies, affecting their sustainable development.

[0006] Existing technologies are still insufficient in terms of intelligence and automation. Many waste gas treatment devices still rely on manual monitoring and operation, and lack real-time monitoring and data feedback mechanisms. This makes it impossible for laboratories to obtain real-time data in time when treating waste gas, and it is difficult to effectively evaluate and adjust the operating status of the equipment. In the event of an emergency, the lack of an intelligent emergency response mechanism may lead to untimely waste gas treatment, increasing safety hazards.

[0007] Existing waste gas treatment devices are also not environmentally friendly. Although many devices are designed with waste gas removal in mind, there is often a lack of effective treatment solutions for the waste and by-products generated during the treatment process. For example, activated carbon needs to be replaced regularly after absorbing harmful gases, and how to deal with the discarded activated carbon becomes a difficult problem. Many laboratories lack a systematic solution for dealing with these wastes, which may lead to secondary pollution and affect the effectiveness of environmental protection.

[0008] Laboratory waste gas treatment devices and treatment methods still have obvious defects in treatment efficiency, adaptability, operating costs, intelligence level and environmental friendliness. These problems not only affect the effect of waste gas treatment and the service life of the equipment, but also reduce the safety and sustainable development of the laboratory. Therefore, in-depth research and improvement on these technical defects will help improve the overall performance of waste gas treatment devices to better meet the needs of modern laboratories. Summary of the invention

[0009] The present invention proposes a laboratory waste gas treatment device and a treatment method. The laboratory waste gas treatment device solves the problems of low filtration efficiency and inconvenient maintenance of existing waste gas treatment devices through a multi-section cabin design and a movable waste gas filter plate, thereby improving the efficiency and convenience of waste gas treatment.

[0010] The technical solution of the present invention is implemented as follows: a laboratory waste gas treatment device, including a fixed ring plate installed on the rear end face of a waste gas treatment cabin, a through hole is opened in the middle of the fixed ring plate, a drive motor is installed in the middle of the fixed ring plate on a side away from the waste gas treatment cabin, the drive shaft of the drive motor passes through the through hole and enters the interior of the waste gas treatment cabin, and position fixing plates are symmetrically arranged on the left and right ends of the end face of the fixed ring plate on the side away from the waste gas treatment cabin, a discharge tube is installed in the middle of the end face of the waste gas treatment cabin on the side away from the fixed ring plate, and a waste gas inlet tube is annularly arranged on the side end face of the waste gas treatment cabin, the waste gas treatment cabin is divided into at least five cabin bodies around the center point, and the inner wall of each cabin body is provided with guide rails that are not connected to each other, and a displacement bracket is installed in the guide rail, and a return spring is installed on the side of the guide rail away from the air inlet route of the waste gas inlet tube, the return spring is connected to the displacement bracket, and the displacement bracket is installed with a waste gas filter plate.

[0011] Laboratory waste gas treatment devices in the prior art usually adopt a single filter cabin design, which has the following problems: the filtration efficiency of a single filter cabin is limited, and it cannot effectively treat waste gas with high concentrations or multiple components, resulting in incomplete waste gas treatment, which may cause harm to the environment and human health; the filter plates of existing devices are usually fixedly installed and cannot be adjusted according to changes in waste gas flow or composition, resulting in unstable filtration effects; fixed filter plates need to be shut down and disassembled for maintenance or replacement, which not only affects the progress of the experiment, but also increases maintenance costs and time. This application document solves the above technical difficulties through a multi-section cabin design and a movable waste gas filter plate.

[0012] Specifically, the exhaust gas treatment chamber is divided into at least five sections around the center point of the circle. The inner wall of each section of the chamber is provided with a guide rail that is not connected to each other. A displacement bracket and a return spring are installed in the guide rail, and an exhaust gas filter plate is installed on the displacement bracket. This design enables the exhaust gas filter plate to be dynamically adjusted according to the changes in the exhaust gas flow or composition. Through the action of the return spring, the displacement bracket can automatically adjust its position when the exhaust gas pressure changes, thereby optimizing the filtering effect. In addition, the multi-section chamber design enables the exhaust gas to be processed in sections, improving the filtering efficiency and processing capacity. The driving shaft of the drive motor passes through the fixed ring plate and enters the exhaust gas treatment chamber, which can drive the displacement bracket and the filter plate to perform periodic movement, further enhancing the filtering effect. The position fixing plate on the fixed ring plate ensures the stable connection between the drive motor and the exhaust gas treatment chamber, avoiding loosening or damage of the equipment due to vibration or pressure changes. The design of the exhaust tube enables the treated exhaust gas to be discharged in an orderly manner, avoiding secondary pollution. The annular setting of the exhaust gas inlet tube ensures that the exhaust gas can enter the treatment chamber evenly, avoiding the problem of local overload or uneven filtering.

[0013] This application document solves the problems of low filtration efficiency, inconvenient maintenance, and limited processing capacity in the prior art through the coordinated design of a multi-section cabin, a movable filter plate, and a drive motor, and significantly improves the performance and practicality of the exhaust gas treatment device.

[0014] As a preferred embodiment, a connecting rod is provided on the driving shaft of the driving motor, and the connecting rod is connected to the bottom of the displacement bracket in the guide rail, and the displacement bracket is driven to move with the assistance of the driving motor.

[0015] As a preferred embodiment, the inner wall of the segmented cabin of the exhaust gas treatment cabin has at least four guide rails arranged in an array around the center point, wherein only displacement brackets are arranged in the two guide rails away from the driving shaft of the driving motor, and driven wheels are installed on both sides of the displacement brackets.

[0016] As a preferred embodiment, the exhaust gas filter plate is provided with a guide plate, a filter plate and an export plate in sequence from left to right, the guide plate and the export plate have the same structure, and the guide plate and the export plate are rotated 90°.

[0017] As a preferred embodiment, the filter plate is a honeycomb structure, and its pore size changes gradiently along the direction of airflow flow. A nano-catalytic coating is coated on the inner wall of the pore size. A magnetic adsorption strip is provided on the end face of the honeycomb structure ribs of the filter plate facing the direction of airflow flow, and a porous adsorption component is installed on the magnetic adsorption strip. The node cross-section of the honeycomb structure of the filter plate is circular.

[0018] A laboratory waste gas treatment method, wherein the laboratory waste gas is introduced into a waste gas treatment chamber through a waste gas inlet tube;

[0019] Start the driving motor, drive the connecting rod through the driving shaft, so that the connecting rod pushes the displacement bracket in the guide rail to move along the guide rail;

[0020] The displacement bracket drives the exhaust gas filter plate to move in the exhaust gas treatment chamber, and the exhaust gas passes through the guide plate, the filter plate and the outlet plate in sequence;

[0021] The exhaust gas flows in the honeycomb structure of the filter plate, undergoing multi-stage filtration and catalytic reaction through pore size gradient changes and nano-catalytic coatings, while the porous adsorption components on the magnetic adsorption strips adsorb particulate matter in the exhaust gas;

[0022] The treated waste gas is discharged from the waste gas treatment chamber through the exhaust pipe.

[0023] As a preferred embodiment, the step of moving the exhaust gas filter plate includes:

[0024] The driving motor drives the connecting rod to push the displacement bracket to move away from the exhaust gas inlet tube, thereby compressing the return spring;

[0025] When the driving motor stops or reverses, the return spring releases elastic potential energy to push the displacement bracket to move toward the exhaust gas inlet tube;

[0026] By controlling the forward and reverse rotation of the driving motor, the reciprocating motion of the exhaust gas filter plate in the exhaust gas treatment chamber is achieved, thereby enhancing the contact efficiency between the exhaust gas and the filter plate.

[0027] As a preferred embodiment, the cleaning step of the filter plate includes:

[0028] Close the exhaust gas inlet and outlet tubes regularly to stop the exhaust gas from entering the exhaust gas treatment chamber;

[0029] Start the drive motor to move the exhaust gas filter plate to the clean area of ​​the exhaust gas treatment cabin;

[0030] The honeycomb structure of the filter plate is purged with high-pressure gas or flushed with liquid through external cleaning equipment to remove adsorbed particles and pollutants;

[0031] After cleaning is completed, restart the drive motor, move the exhaust gas filter plate to the working position, and resume the exhaust gas treatment operation.

[0032] After adopting the above technical solution, the beneficial effect of the present invention is that the multi-section cabin design significantly improves the efficiency and capacity of exhaust gas treatment. By dividing the exhaust gas treatment cabin into at least five sections, the exhaust gas can be treated in sections, and the filter plates in each section of the cabin can work independently, thereby improving the filtration efficiency and treatment capacity, and is particularly suitable for the treatment of high-concentration or multi-component exhaust gases.

[0033] The design of the movable exhaust filter plate makes the filtering effect more stable and flexible. The combination of the displacement bracket and the return spring enables the filter plate to automatically adjust its position according to the changes in the exhaust gas flow or composition, optimize the filtering effect, and avoid the problem of uneven filtering or failure caused by changes in exhaust gas pressure. The introduction of the drive motor further enhances the dynamic adjustment ability of the filter plate, and improves the filtering effect and the working efficiency of the equipment through periodic movement. The design of the fixed ring plate and the position fixing plate ensures the stable connection between the drive motor and the exhaust gas treatment chamber, avoids the loosening or damage of the equipment due to vibration or pressure changes, and improves the reliability and service life of the equipment.

[0034] The design of the exhaust tube allows the treated exhaust gas to be discharged in an orderly manner, avoiding secondary pollution. At the same time, its structural design ensures the smoothness and safety of exhaust. The annular setting of the exhaust gas inlet tube ensures that the exhaust gas can enter the treatment chamber evenly, avoiding the problem of local overload or uneven filtering, and further improving the treatment effect of the equipment.

[0035] The laboratory waste gas treatment device significantly improves the efficiency, stability and convenience of waste gas treatment through the coordinated design of a multi-section cabin, a movable filter plate and a drive motor. It solves the problems of low filtration efficiency, inconvenient maintenance and limited processing capacity in the existing technology, and has broad application prospects and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0038] Figure 2 A cross-sectional view of the exhaust gas treatment chamber of the present invention;

[0039] Figure 3It is a partial enlarged view of the guide rail of the present invention;

[0040] Figure 4 It is a schematic diagram of the structure of the exhaust gas filter plate of the present invention.

[0041] In the figure, 1-exhaust gas treatment cabin; 11-guide rail, 12-displacement bracket, 13-return spring, 14-exhaust gas filter plate, 15-guide plate, 16-filter plate, 17-export plate, 2-fixed ring plate; 3-drive motor; 4-position fixing plate; 5-discharge tube; 6-exhaust gas inlet tube. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Example:

[0044] like Figures 1 to 4 As shown, a laboratory waste gas treatment device, the working principle and workflow of which are as follows: waste gas enters the waste gas treatment cabin 1 through the waste gas inlet tube 6, and the annular arrangement of the waste gas inlet tube 6 ensures that the waste gas can be evenly distributed in each cabin. The waste gas treatment cabin 1 is divided into at least five cabins around the center point of the circle, and each cabin inner wall is provided with a guide rail 11 that is not connected to each other, and a displacement bracket 12 is installed in the guide rail 11, and an exhaust gas filter plate 14 is installed on the displacement bracket 12. When the waste gas enters the cabin, the waste gas filter plate 14 starts to filter the waste gas to remove harmful substances therein.

[0045] The driving shaft of the driving motor 3 passes through the through hole of the fixed ring plate 2 and enters the exhaust gas treatment chamber 1. The driving shaft is connected to the displacement bracket 12. The operation of the driving motor 3 drives the displacement bracket 12 to perform periodic motion in the guide rail 11, so that the exhaust gas filter plate 14 can dynamically adjust its position to optimize the filtering effect. A return spring 13 is installed on the side of the guide rail 11 away from the intake route of the exhaust gas inlet tube 6. The return spring 13 is connected to the displacement bracket 12. When the exhaust gas pressure changes, the return spring 13 can automatically adjust the position of the displacement bracket 12 to ensure that the filter plate 14 is always in the best filtering state.

[0046] The fixed ring plate 2 is fixed to the external structure through the position fixing plates 4 symmetrically arranged at its left and right ends, ensuring the stable connection between the drive motor 3 and the exhaust gas treatment chamber 1, and avoiding the loosening or damage of the equipment due to vibration or pressure changes. The treated exhaust gas is discharged in an orderly manner through the exhaust tube 5 installed in the middle of the end surface of the exhaust gas treatment chamber 1 away from the fixed ring plate 2, avoiding secondary pollution.

[0047] In the entire workflow, the exhaust gas inlet tube 6 is responsible for uniformly introducing the exhaust gas into the exhaust gas treatment chamber 1, the multi-section chamber body and the movable exhaust gas filter plate 14 in the exhaust gas treatment chamber 1 are responsible for efficient filtering of the exhaust gas, the drive motor 3 and the return spring 13 are responsible for dynamically adjusting the position of the filter plate 14 to optimize the filtering effect, the fixed ring plate 2 and the position fixing plate 4 are responsible for ensuring the stable connection of the equipment, and the exhaust tube 5 is responsible for safely discharging the treated exhaust gas. This design enables the exhaust gas treatment device to efficiently and stably treat laboratory exhaust gas. At the same time, by dynamically adjusting the position of the filter plate and treating the exhaust gas in sections, the filtering efficiency and treatment capacity are significantly improved, meeting the strict requirements of the laboratory for exhaust gas treatment. .

[0048] In the present application document, a connecting rod is provided on the driving shaft of the driving motor 3, and the connecting rod is connected to the bottom of the displacement bracket 12 in the guide rail 11. The dynamic adjustment ability and filtering efficiency of the exhaust gas filter plate are improved by the auxiliary driving of the driving motor 3 to drive the displacement bracket 12 to move. In the prior art, the exhaust gas filter plate is usually fixedly installed or only passively adjusts the position by relying on the exhaust gas pressure, and cannot be actively adjusted according to the changes in the exhaust gas flow or composition, resulting in unstable filtering effect. The design of the connecting rod enables the displacement bracket 12 to perform precise periodic motion in the guide rail 11 through the active drive of the driving motor 3, thereby dynamically adjusting the position of the exhaust gas filter plate 14 and optimizing the filtering effect. The driving motor 3 drives the displacement bracket 12 to move through the connecting rod, so that the filter plate 14 can adjust its position in real time according to the changes in the exhaust gas flow or composition, ensuring that the filtering effect is always in the best state. At the same time, through the auxiliary drive of the driving motor 3, the problem of uneven filtering or failure caused by changes in exhaust gas pressure is reduced, and the stability and filtering efficiency of the equipment are improved.

[0049] The inner wall of the segmented cabin of the exhaust gas treatment cabin 1 is provided with at least four guide rails 11 in an array around the center point, of which only displacement brackets 12 are provided in the two guide rails 11 away from the driving shaft of the driving motor 3, and driven wheels are installed on both sides of the displacement bracket 12. The displacement bracket 12 is used to improve the smoothness of movement and the stability of the filter plate. In the prior art, the guide rails are usually designed with a single or a small number, which is prone to cause the displacement bracket 12 to move unsteadily due to uneven force, thereby affecting the filtering effect. The design of at least four guide rails 11 surrounding the array ensures the smoothness of movement of the displacement bracket 12 through multi-point support, and the driven wheels provided in the two guide rails 11 away from the driving shaft of the driving motor 3 further enhance the guidance and stability of the displacement bracket 12. This design enables the displacement bracket 12 to move smoothly under the drive of the driving motor 3, avoids vibration or displacement of the filter plate 14 caused by unstable movement, and ensures the stability of the filtering effect and the efficient operation of the equipment.

[0050] The exhaust gas filter plate 14 is provided with a guide plate 15, a filter plate 16 and an export plate 17 from left to right. The guide plate 15 and the export plate 17 have the same structure, and the guide plate 15 and the export plate 17 are rotated 90°. The exhaust gas filter plate usually adopts a single structural design, which is prone to unsatisfactory filtering effect due to uneven airflow distribution. The 90° rotation setting of the guide plate 15 and the export plate 17 optimizes the exhaust gas flow path through its structural design, so that the exhaust gas can pass through the filter plate 16 evenly, avoiding the problem of local overload or uneven filtering. In the actual working scenario, the guide plate 15 is responsible for evenly guiding the exhaust gas to the filter plate 16, the filter plate 16 is responsible for efficiently filtering the exhaust gas, and the export plate 17 is responsible for orderly exporting the filtered exhaust gas. This design makes the exhaust gas treatment process more efficient and stable, and improves the filtering efficiency and reliability of the equipment.

[0051] The filter plate 16 is a honeycomb structure, and its aperture changes gradiently along the direction of airflow. A nano-catalytic coating is coated on the inner wall of the aperture. The end face of the honeycomb structure ribs of the filter plate 16 facing the direction of airflow is provided with a magnetic adsorption strip, and a porous adsorption component is installed on the magnetic adsorption strip. The node cross section of the honeycomb structure of the filter plate 16 is circular. The design of the honeycomb structure can effectively filter particles of different particle sizes through its gradient-changing aperture and nano-catalytic coating, and decompose harmful gases through catalysis. The provision of magnetic adsorption strips and porous adsorption components further enhances the adsorption capacity of the filter plate 16 for tiny particles and harmful substances. In actual working scenarios, this design enables the filter plate 16 to efficiently filter particles and harmful gases in the exhaust gas. At the same time, through the synergistic effect of the magnetic adsorption strips and the porous adsorption components, the removal effect of tiny particles and harmful substances is further improved, ensuring the efficiency and safety of exhaust gas treatment.

[0052] A laboratory waste gas treatment method has significant practical application value in multiple specific scenarios. For example, in a chemical laboratory, when a strong acid or organic solvent reaction is performed, the waste gas often contains hydrogen chloride, hydrogen sulfide or volatile organic compounds (VOCs). After the waste gas enters the waste gas treatment chamber 1 through the waste gas inlet tube 6, the driving motor 3 pushes the displacement bracket 12 in the guide rail 11 through the connecting rod, so that the waste gas filter plate 14 moves along the annular guide rail system.

[0053] At this time, the guide plate 15 disperses the high-concentration exhaust gas to different compartments through its 90° rotating structure to avoid local airflow overload. The honeycomb structure of the filter plate 16 adopts a gradient design with a large pore size (about 200μm) in the front section and a small pore size (50μm) in the rear section. The front section intercepts particulate matter, and the magnetic adsorption strips on the honeycomb ribs in the rear section capture aerosols through porous adsorption components (such as activated carbon-ferrite composite materials). At the same time, the nano-catalytic coating (such as TiO2 doped with MnO2) decomposes VOCs into CO2 and H2O under ultraviolet excitation.

[0054] When pathogenic microorganisms are operated in biological laboratories, when aerosols in the exhaust gas pass through the filter plate 16, the gradient aperture structure can intercept 0.5-5μm microbial particles step by step, the silver-loaded activated carbon component on the magnetic adsorption strip can destroy the microbial cell membrane, and the hydroxyl radicals generated by the nanocatalytic layer further inactivate residual pathogens. When heavy metal exhaust gas is treated in the analytical testing laboratory, the circular cross-section design of the honeycomb node of the filter plate 16 makes the airflow containing lead and mercury vapor form turbulence, prolonging the contact time. The sulfide-modified zeolite in the porous adsorption component can specifically adsorb heavy metal ions, and the CeO2-ZrO2 composite material in the catalytic coating reduces NOx to N2.

[0055] When treating iodine-131 waste gas in a radioactive laboratory, the reciprocating motion of the displacement bracket 12 causes the filter plate 16 to generate mechanical vibrations to prevent the deposition of radioactive particles. The polyacrylonitrile-based adsorbent on the magnetic adsorption strip can efficiently capture gaseous iodine, and the gradient pressure difference design in the honeycomb structure ensures a filtration efficiency of 99.97%. In the treatment of sudden high-concentration waste gas accidents, the drive motor 3 can be switched to a pulse mode, and the filter plate 16 generates a vibration wave through the rapid reciprocating motion (frequency 2-5Hz) of the displacement bracket 12, which effectively prevents the filter material from being blocked. At the same time, the elastic energy storage characteristics of the return spring 13 can buffer the instantaneous pressure shock. When the method treats HF waste gas generated by the etching process in an electronic laboratory, the polytetrafluoroethylene-ceramic composite structure of the corrosion-resistant material layer 11 can resist hydrofluoric acid corrosion, the Ca(OH)2 coating in the honeycomb structure reacts with HF to generate CaF2 precipitation, and the molecular sieve assembly on the magnetic adsorption strip can deeply purify the residual acid gas.

[0056] When treating high-temperature incineration waste gas, the wavy high-temperature resistant silicone structure of the elastic sealing pad 5 can compensate for the difference in thermal expansion, and the guide groove 31 of the support frame 3 accelerates the airflow through the Venturi effect, so that the 800°C high-temperature waste gas completes the catalytic oxidation reaction within 0.5 seconds. This method realizes the dynamic and modular treatment of complex laboratory waste gas through multi-physical field coupling (mechanical movement, catalytic reaction, adsorption filtration), and improves the treatment efficiency by more than 40% and reduces the pressure drop by 35% compared with the traditional fixed filtration system. It is particularly suitable for treating special laboratory waste gas with complex components and large concentration fluctuations.

[0057] In this technical solution, the movement steps of the exhaust gas filter plate are controlled by the forward and reverse rotation of the drive motor to realize the reciprocating motion of the exhaust gas filter plate in the exhaust gas treatment chamber. The application of this design in specific working scenarios can significantly improve the efficiency of exhaust gas treatment. Specifically, when the drive motor is started, the connecting rod pushes the displacement bracket to move away from the exhaust gas inlet tube and compresses the return spring at the same time. When the drive motor stops or reverses, the return spring releases its elastic potential energy and pushes the displacement bracket to move in the direction close to the exhaust gas inlet tube. This structural design enables the exhaust gas filter plate to have a higher contact efficiency with the exhaust gas flow during the exhaust gas treatment process, ensuring that the exhaust gas can be fully purified when passing through the filter plate, reducing the emission of harmful substances. This efficient filtering mechanism is particularly important in scenarios such as industrial production, chemical plants and exhaust gas treatment facilities, and can effectively reduce environmental pollution and meet modern environmental protection requirements.

[0058] During the cleaning step of the filter plate, the exhaust gas inlet tube and the exhaust tube are closed regularly to stop the exhaust gas from entering the exhaust gas treatment chamber, ensuring that no new pollutants enter during the cleaning process. The difference between the design of this process and the prior art is that traditional cleaning methods often cannot effectively isolate the exhaust gas being treated, resulting in poor cleaning effects. However, this solution uses clear cleaning steps to start the drive motor to move the exhaust gas filter plate to the cleaning area, and use high-pressure gas blowing or liquid flushing to remove particulate matter and pollutants on the filter plate to ensure that the honeycomb structure of the filter plate always maintains a good purification effect. After cleaning is completed, restart the drive motor, move the exhaust gas filter plate to the working position, and resume normal exhaust gas treatment operations. This effective cleaning mechanism can ensure the long-term stable operation of the exhaust gas treatment system in specific working scenarios, especially in environments with high pollution and high particulate matter concentrations, reduce equipment maintenance costs, and improve overall work efficiency.

[0059] This technical solution significantly improves the efficiency and reliability of the exhaust gas treatment system by optimizing the movement and cleaning steps of the exhaust gas filter plate, ensuring that exhaust gas emissions can be effectively controlled in various industrial environments to protect the environment and public health.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A laboratory waste gas treatment device, characterized in that: The exhaust gas treatment chamber (1) comprises a fixed ring plate (2) installed on the rear end face thereof, a through hole being opened in the middle of the fixed ring plate (2), a driving motor (3) being installed in the middle of a side of the fixed ring plate (2) away from the exhaust gas treatment chamber (1), a driving shaft of the driving motor (3) passing through the through hole and entering the interior of the exhaust gas treatment chamber (1), a position fixing plate (4) being symmetrically arranged at the left and right ends of the end face of the side of the fixed ring plate (2) away from the exhaust gas treatment chamber (1), and a discharge tube being installed in the middle of the end face of the side of the exhaust gas treatment chamber (1) away from the fixed ring plate (2). (5), an exhaust gas inlet tube (6) is provided in an annular shape on the side end surface of the exhaust gas treatment chamber (1), the exhaust gas treatment chamber (1) is divided into at least five chamber sections around the center point, each chamber section is provided with a guide rail (11) which is not connected to each other on the inner wall, a displacement bracket (12) is installed in the guide rail (11), a return spring (13) is installed in the guide rail (11) on the side away from the exhaust gas inlet tube (6) intake route, the return spring (13) is connected to the displacement bracket (12), and an exhaust gas filter plate (14) is installed on the displacement bracket (12).

2. A laboratory waste gas treatment device as claimed in claim 1, characterized in that: A connecting rod is provided on the driving shaft of the driving motor (3), and the connecting rod is connected to the bottom of the displacement bracket (12) in the guide rail (11), and the displacement bracket (12) is driven to move with the assistance of the driving motor (3).

3. A laboratory waste gas treatment device as claimed in claim 2, characterized in that: The inner wall of the segmented cabin of the exhaust gas treatment cabin (1) is provided with at least four guide rails (11) arranged in an array around a center point, wherein only displacement brackets (12) are arranged in two guide rails (11) away from the drive shaft of the drive motor (3), and driven wheels are installed on both sides of the displacement bracket (12).

4. A laboratory waste gas treatment device as claimed in claim 1, characterized in that: The exhaust gas filter plate (14) is provided with a guide plate (15), a filter plate (16) and an outlet plate (17) in sequence from left to right. The guide plate (15) and the outlet plate (17) have the same structure. The guide plate (15) and the outlet plate (17) are arranged to be rotated 90 degrees.

5. A laboratory waste gas treatment device as claimed in claim 4, characterized in that: The filter plate (16) is a honeycomb structure, the aperture of which changes gradiently along the direction of airflow, and a nano-catalytic coating is coated on the inner wall of the aperture. The end surface of the honeycomb structure ribs of the filter plate (16) facing the direction of airflow is provided with a magnetic adsorption strip, and a porous adsorption component is installed on the magnetic adsorption strip. The node cross-section of the honeycomb structure of the filter plate (16) is circular.

6. A method for treating laboratory waste gas, characterized in that: Introducing laboratory waste gas into the waste gas treatment chamber (1) through the waste gas inlet tube (6); The driving motor (3) is started to drive the connecting rod via the driving shaft, so that the connecting rod pushes the displacement bracket (12) in the guide rail (11) to move along the guide rail (11); The displacement bracket (12) drives the exhaust gas filter plate (14) to move in the exhaust gas treatment chamber (1), and the exhaust gas passes through the guide plate (15), the filter plate (16) and the outlet plate (17) in sequence; The exhaust gas flows in the honeycomb structure of the filter plate (16), and undergoes multi-stage filtration and catalytic reaction through pore size gradient change and nano-catalytic coating, while the porous adsorption component on the magnetic adsorption strip adsorbs particulate matter in the exhaust gas; The treated waste gas is discharged from the waste gas treatment chamber (1) through the discharge tube (5).

7. A laboratory waste gas treatment device as claimed in claim 6, characterized in that: The step of moving the exhaust gas filter plate (14) comprises: The driving motor (3) drives the connecting rod to push the displacement bracket (12) to move away from the exhaust gas inlet tube (6), thereby compressing the return spring (13); When the driving motor (3) stops or reverses, the return spring (13) releases elastic potential energy, pushing the displacement bracket (12) to move in a direction close to the exhaust gas inlet tube (6); By controlling the forward and reverse rotation of the driving motor (3), the reciprocating motion of the exhaust gas filter plate (14) in the exhaust gas treatment chamber (1) is achieved, thereby enhancing the contact efficiency between the exhaust gas and the filter plate (16).

8. A laboratory waste gas treatment device as claimed in claim 6, characterized in that: The cleaning step of the filter plate (16) comprises: The exhaust gas inlet tube (6) and the exhaust tube (5) are closed periodically to stop the exhaust gas from entering the exhaust gas treatment chamber (1); Starting the drive motor (3) to move the exhaust gas filter plate (14) to a clean area of ​​the exhaust gas treatment chamber (1); The honeycomb structure of the filter plate (16) is purged with high pressure gas or flushed with liquid by an external cleaning device to remove adsorbed particles and pollutants; After the cleaning is completed, the drive motor (3) is restarted to move the exhaust gas filter plate (14) to the working position and resume the exhaust gas treatment operation.

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