Waste gas storage device for waste gas detection

Abstract

The embodiment of the utility model provides a waste gas storage device for waste gas detection, which comprises a gas inlet for receiving waste gas from the outside and guiding the waste gas into the device; one end of the flow guide pipe is connected with the gas inlet, and the other end of the flow guide pipe is connected with a waste gas storage container; the waste gas storage container is used for collecting the waste gas introduced through the flow guide pipe; the exhaust gas backflow prevention valve is arranged at the position, close to the waste gas storage container, in the flow guide pipe and used for preventing waste gas in the storage container from flowing back into the flow guide pipe; the sewage draining exit is communicated with the bottom of the waste gas storage container and is provided with a sewage draining valve, so that accumulated pollutants can be conveniently removed; and the exhaust port is arranged above the waste gas storage container, is communicated with the interior of the waste gas storage container and is used for exhausting the detected waste gas out of the waste gas storage container. According to the scheme of the embodiment of the invention, the problems of waste gas residue and accumulation caused by unsmooth internal design of the sampling pipeline can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of environmental protection equipment, and in particular to an exhaust gas storage device for exhaust gas detection. Background Art

[0002] Exhaust gas storage devices used for waste gas detection are primarily designed to collect and store waste gas generated during industrial production processes for subsequent testing and analysis to ensure compliance with environmental standards. However, this device has a significant drawback: due to the non-smooth internal design of the sampling pipeline, waste gas can remain and accumulate within the pipeline, affecting the accuracy and reliability of subsequent gas detection. This issue not only leads to distorted test results but can also cause secondary pollution, further increasing environmental risks. Summary of the Invention

[0003] In view of this, an embodiment of the present disclosure provides an exhaust gas storage device for exhaust gas detection, which at least partially solves the problems existing in the prior art.

[0004] The present application provides an exhaust gas storage device for exhaust gas detection, comprising:

[0005] An air inlet, used to receive exhaust gas from the outside and guide it into the interior of the device;

[0006] a flow guide pipe, one end of which is connected to the air inlet and the other end of which is connected to the exhaust gas storage container;

[0007] An exhaust gas storage container, used for collecting the exhaust gas introduced through the guide pipe;

[0008] An exhaust backflow prevention valve is provided inside the guide pipe near the exhaust gas storage container to prevent the exhaust gas in the storage container from flowing back into the guide pipe;

[0009] A sewage outlet is connected to the bottom of the waste gas storage container and is provided with a sewage valve to facilitate the removal of accumulated pollutants;

[0010] The exhaust port is arranged above the waste gas storage container and is connected to the interior of the waste gas storage container, and is used to discharge the waste gas that has been tested out of the waste gas storage container;

[0011] The exhaust backflow prevention valve is a one-way valve structure, and when the pressure in the container exceeds the set value, the valve core automatically closes; and

[0012] The exhaust gas storage container is further equipped with an airflow straightening plate arranged in the direction of exhaust gas inflow.

[0013] Preferably, a particle filter is further provided at the air inlet, and the particle filter includes a series of filter screens with different pore sizes.

[0014] Preferably, the inner wall of the exhaust gas storage container is coated with an ultra-slip nanomaterial coating.

[0015] Preferably, the exhaust port is provided with a filter device, and the filter device is circular, with a diameter smaller than the inner diameter of the exhaust port, and is fixed at the entrance of the exhaust port by a clamping ring.

[0016] Preferably, the filter device includes a primary filter layer and a high-efficiency filter layer.

[0017] Preferably, the airflow straightening plate is a flat plate with a certain inclination angle.

[0018] Preferably, it further includes a multi-stage partition plate located inside the exhaust gas storage container.

[0019] Preferably, the multi-stage partition plates are arranged horizontally in multiple stages and form a baffle.

[0020] Preferably, the device is provided with an airtight buffer zone at the junction between the air inlet and the flow guide tube.

[0021] The embodiment of the present disclosure provides an exhaust gas storage device for exhaust gas detection, comprising: an air inlet for receiving exhaust gas from the outside and guiding it into the interior of the device; a guide pipe, one end of which is connected to the air inlet and the other end is connected to an exhaust gas storage container; an exhaust gas storage container for collecting exhaust gas introduced through the guide pipe; an exhaust backflow prevention valve provided inside the guide pipe near the exhaust gas storage container to prevent exhaust gas in the storage container from flowing back into the guide pipe; a sewage outlet connected to the bottom of the exhaust gas storage container and provided with a sewage outlet valve to facilitate the removal of accumulated pollutants; an exhaust outlet provided above the exhaust gas storage container and connected to the interior of the exhaust gas storage container to discharge exhaust gas that has been detected out of the exhaust gas storage container. The solution of the embodiment of the present disclosure can solve the problem of residual and accumulated exhaust gas caused by the non-smooth internal design of the sampling pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the exemplary implementation methods of the embodiments of the present disclosure, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a schematic structural diagram of the waste gas storage device of the present utility model;

[0024] Figure 2 This is a front view of the exhaust gas storage device of the present invention;

[0025] Figure 3 This is a cross-sectional view of the air inlet of the exhaust gas storage device of the present invention.

[0026] Figure: 1. Air inlet; 2. Flow guide tube; 3. Exhaust gas storage container; 4. Exhaust backflow prevention valve; 5. Drain outlet; 6. Exhaust outlet; 7. Particle filter; 8. Airflow straightener; 9. Multi-stage separator; 10. Airtight buffer zone; 11. Filter assembly DETAILED DESCRIPTION

[0027] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0028] like Figure 1 and Figure 2 As shown, an exhaust gas storage device for exhaust gas detection in the present application includes an air inlet 1, a guide pipe 2, an exhaust gas storage container 3, an exhaust backflow prevention valve 4, a sewage outlet 5 and an exhaust outlet 6. The various components are interconnected and work together to achieve effective storage and detection of exhaust gas.

[0029] The air inlet 1 is located at one end of the device and is mainly used to receive external exhaust gas and introduce it into the interior of the device. The guide pipe 2 is connected to the air inlet 1, with one end firmly connected to the air inlet 1 through a connector, and the other end is connected to the exhaust gas storage container 3 to ensure that the exhaust gas flows smoothly into the storage container. The exhaust gas storage container 3 has a sealable opening design to facilitate the collection and storage of the exhaust gas introduced through the guide pipe 2. The exhaust backflow prevention valve 4 is installed inside the guide pipe 2 near the exhaust gas storage container 3 to prevent the exhaust gas in the storage container from flowing back into the guide pipe. The sewage outlet 5 is connected to the bottom of the exhaust gas storage container 3 and is equipped with a sewage valve for removing pollutants that may accumulate. The exhaust port 6 is arranged above the exhaust gas storage container 3 and is connected to the interior of the container through a pipe so that the exhaust gas can be discharged out of the device after the exhaust gas detection is completed.

[0030] The structure of the air inlet 1 is usually a circular or rectangular interface, and the material can be selected from stainless steel or other corrosion-resistant materials to ensure that it is not easy to age and deform during long-term use. The guide tube 2 is made of high-quality stainless steel, and the inner wall is polished to have a smooth surface without dead corners, which can effectively reduce the adhesion of exhaust gas during the diversion process. This polishing process can be achieved through chemical polishing or mechanical polishing to ensure that the surface roughness of the inner wall of the guide tube reaches the nanometer level. The exhaust gas storage container 3 is mainly composed of a main container and a sealing cover. The main container is usually made of high-strength, corrosion-resistant materials such as 316L stainless steel or Teflon (PTFE). The sealing cover is designed with a sealing ring to ensure the sealing performance of the container and prevent exhaust gas leakage. The installation position of the exhaust backflow prevention valve 4 can be set on the inner wall of the guide tube. A mounting seat is fixed by a fixing to prevent the valve body from loosening. The valve is usually a one-way valve structure. When the pressure in the container exceeds the set value, the valve core automatically closes to prevent exhaust gas backflow. The waste outlet 5 is located at the bottom of the waste gas storage container 3 and is tightly connected to the container body. The wastewater discharge valve can be a manual plug valve or an electric ball valve, which is easy to operate and control, and can promptly remove accumulated pollutants. The exhaust port 6 is usually located at the top of the waste gas storage container 3 and is connected to the container interior via a pipeline. It is equipped with a regulating valve to adjust the discharge rate and flow rate when necessary.

[0031] More specifically, for example, the guide pipe 2 and the air inlet 1 can be connected by welding or threaded connection to ensure good sealing and durability. The connection between the exhaust gas storage container 3 and the guide pipe can adopt a flange or a clamp-type quick connector to facilitate disassembly and maintenance. The exhaust backflow prevention valve 4 can be fixed to the inner wall of the guide pipe or near the storage container by fasteners to ensure its working stability. The connection between the sewage outlet 5 and the storage container is also welded or flanged, and the sealing performance of the sewage valve needs to be strictly controlled. The connection between the exhaust port 6 and the storage container can be fixed by a pipe joint, and the regulating valve installed on the exhaust pipe is used to accurately control the emission process to ensure easy operation and safety and reliability.

[0032] In one embodiment, Figure 3 As shown, an exhaust gas storage device for exhaust gas detection of the present application is further provided with a particle filter 7 at the air inlet 1. The particle filter 7 is designed to filter out particulate matter in the exhaust gas.

[0033] Specifically, the particle filter 7 can be, for example, a series of filter screens with different pore sizes, and is usually installed at the front end of the air inlet 1, at the outermost edge of the device, to ensure that the airflow is effectively controlled from the very beginning.

[0034] In one embodiment, the exhaust gas storage device used for exhaust gas monitoring in this application comprises a special exhaust gas storage container 3 with an ultra-slippery nanomaterial coating on its inner wall. This design is intended to significantly reduce exhaust gas backflow and pollutant deposition, ensuring smoother exhaust gas flow through the storage container and making the container interior easier to clean. This ultra-slippery nanomaterial coating not only offers excellent wear and corrosion resistance but also possesses extremely low surface energy, effectively preventing gaseous or liquid substances from adhering to the container walls, further reducing maintenance costs.

[0035] In order to specifically illustrate the technical implementation of this feature, the exhaust gas storage container 3 in the device adopts a special spraying or coating process to evenly cover the inner wall of the container with a layer of ultra-smooth nanomaterial coating. The coating is firmly attached to the inner wall of the container by chemical bonds or physical adsorption to form a smooth and strong protective layer. The specific material of the coating can be selected from different nanomaterials according to the actual application environment, such as polytetrafluoroethylene (PTFE), silicon dioxide (SiO2), etc. These materials have excellent hydrophobic and oleophobic properties. During the coating process, the thickness and uniformity of the coating need to be strictly controlled to ensure that the performance of the container will not be reduced due to excessive thickness or unevenness. For example, the inner wall of the container can be evenly sprayed or soaked multiple times to ensure that every part is fully covered by the coating to achieve the best effect.

[0036] Return Reference Figure 1 In one embodiment, an exhaust gas storage device for exhaust gas detection according to the present application is equipped with a filter device 11 at the exhaust port 6. This filter device 11 not only effectively prevents larger particles from being discharged with the exhaust gas, thus avoiding environmental pollution, but also serves as a secondary interception layer, preventing tiny particles in the exhaust gas from entering the exterior of the device or being deposited inside the device, thereby reducing the possibility of internal contamination of the equipment and extending the service life of the device. This filter device 11 is typically composed of multiple layers of filter material, including a primary filter layer and a high-efficiency filter layer, to ensure comprehensive interception of particles of different sizes.

[0037] Specifically, the filter device 11 is installed at the exhaust port 6 and is tightly connected to the exhaust port 6 to ensure that the exhaust gas can be filtered layer by layer when passing through. The primary filter layer is generally made of a relatively coarse material, such as a fiber mesh or a metal mesh, to intercept larger particles; while the high-efficiency filter layer uses a finer material, such as a HEPA filter, which can capture particles with smaller diameters. The two layers of filters can be fixed by snaps or bolts, which are convenient for disassembly, cleaning or replacement, ensuring high-efficiency filtration performance under long-term use. In order to further enhance the sealing effect, a sealing ring is also provided between the filter device 11 and the exhaust port 6 to ensure that the airflow can only pass through the filter without leakage. For example, the filter device 11 can be designed to be circular, with a diameter slightly smaller than the inner diameter of the exhaust port 6, and fixed to the entrance of the exhaust port 6 by a snap ring to ensure a stable and reliable installation.

[0038] refer to Figure 3 In one embodiment, an exhaust gas storage device for exhaust gas detection of the present application is further equipped with an airflow straightening plate 8. The airflow straightening plate 8 is arranged in the direction of exhaust gas inflow, aiming to stabilize the airflow distribution entering the exhaust gas storage device. This design can effectively organize the exhaust gas when it initially flows into the device, ensuring that the airflow is evenly distributed throughout the device. In this way, adsorption problems caused by excessive local flow velocity can be effectively avoided, thereby improving the operating efficiency and detection accuracy of the entire system. In addition, the design and installation of the airflow straightening plate 8 can significantly reduce the eddy and turbulent phenomena that may be generated after the exhaust gas enters the device, further improving the overall flow characteristics of the airflow.

[0039] For example, the airflow straightener 8 can be a flat plate with a certain inclination angle, or it can be composed of multiple parallel, elongated slats, with a certain spacing between the slats to ensure uniform airflow. To ensure the effectiveness of the airflow straightener 8, it can be installed at the front end of the exhaust gas inlet and closely connected to the exhaust gas intake duct to ensure a smooth and unobstructed transition from the inlet to the straightener. Specifically, the straightener can be connected to the housing of the exhaust gas storage device by welding or bolting to ensure structural stability and reliability.

[0040] In one embodiment, an exhaust gas storage device for exhaust gas detection of the present application is provided with a multi-stage partition plate 9 (see Figure 2 ), these partitions are installed inside the exhaust gas storage container 3. The multi-stage partitions 9 are designed to prolong the residence time of the exhaust gas within the storage container. By increasing the complexity of the gas path, heavier pollutants are forced to settle to the bottom under the influence of gravity, rather than being retained for a long time within the device with the airflow. This results in a purer exhaust gas sample, reducing the possibility of pollutants entering the subsequent testing process, thereby improving the accuracy and reliability of exhaust gas testing.

[0041] These dividers are arranged horizontally in multiple levels, appropriately spaced apart and forming deflections to ensure that the exhaust gas flows through multiple distinct paths, effectively increasing the length and complexity of the gas flow path. Each divider can be flat or corrugated to enhance airflow guidance and dispersion, further promoting pollutant deposition. The divider materials are typically selected to have high corrosion resistance and mechanical strength to accommodate common chemicals in the exhaust gas environment.

[0042] From a technical implementation perspective, the multi-stage partition plate 9 can be secured to the inner wall of the exhaust gas storage container 3 by welding, snap fastening, or bolting. For example, one end of the partition plate can be welded to the container inner wall, while the other end can be snap fastened to an adjacent container inner wall or a support rod to ensure the partition plate's stability. This installation method is not only simple to operate but also effectively prevents the partition plate from loosening or falling off due to vibration or impact during long-term use.

[0043] Return Reference Figure 1 In one embodiment, an exhaust gas storage device for exhaust gas detection in the present application effectively improves the performance and reliability of the device by providing an airtight buffer zone 10 at the joint between the air inlet 1 and the guide tube 2. The main function of the airtight buffer zone 10 is to absorb the impact of the airflow at the moment of intake, thereby avoiding vibration of the guide tube caused by a sudden increase in air pressure. This not only maintains the stability of the exhaust gas flow, but also reduces the possibility of pollutant adhesion. This design is particularly suitable for scenarios that require frequent air intake or the processing of high-pressure airflow, and can significantly improve the accuracy and reliability of exhaust gas detection.

[0044] Specifically, an airtight buffer zone 10 is installed at the junction of the air inlet 1 and the air guide tube 2, ensuring that the airflow passes through this buffer zone before entering the air guide tube. The buffer zone is usually made of a flexible material and can be an elastic diaphragm, bellows, or other similar structure, capable of withstanding high air pressure while maintaining good sealing. The design of the buffer zone ensures that when high-pressure airflow enters, the flexible material can respond and absorb the impact force in a timely manner, thereby reducing the impact on the air guide tube and ensuring stable operation. This structure not only improves the overall durability and safety of the device, but also reduces the frequency and cost of equipment maintenance.

[0045] For example, this can be achieved by fixing an airtight buffer section made of elastic material between the air inlet 1 and the flow guide 2. Specifically, the airtight buffer section can be designed as a bellows structure, with its ends connected to the flanges of the air inlet 1 and the flow guide duct respectively via sealing rings. This connection method ensures airtightness while providing the necessary buffering effect when airflow impacts.

[0046] In actual operation, when the device is in use, exhaust gas from the outside environment is first received through the air inlet 1. This step is crucial, as it is the first step for the exhaust gas to enter the device. The air inlet 1 not only introduces the exhaust gas but also ensures its smooth entry. The exhaust gas is then directed into a specially treated flow tube 2. The polished inner wall of the flow tube significantly reduces adhesion between the exhaust gas and the tube wall, thus preventing residual and accumulation of exhaust gas within the tube, and addressing the residual contamination problem that exists in conventional devices. The exhaust gas flows along the flow tube 2 and ultimately reaches the exhaust gas storage container 3. This container is designed to be sealable and openable, facilitating the collection and introduction of exhaust gas through the flow tube. It also ensures a tight seal when not sampling, preventing external air from contaminating the sample. Throughout this process, the exhaust backflow prevention valve 4 plays a key role. Located inside the flow tube or near the exhaust gas storage container 3, it effectively prevents exhaust gas from flowing back into the flow tube, thereby preventing contamination or leakage of the collected sample. Furthermore, when pollutants accumulate inside the storage container, they can be cleaned through the bottom drain port 5 and the corresponding drain valve, keeping the device clean. Finally, the exhaust gas that has been tested is discharged from the device through the exhaust port 6 located above the exhaust gas storage container 3. The entire process is safe and efficient, ensuring the accurate collection and discharge of exhaust gas.

[0047] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in this application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An exhaust gas storage device for exhaust gas detection, characterized in that: include: An air inlet (1) for receiving exhaust gas from the outside and guiding it into the interior of the device; a flow guide pipe (2), one end of which is connected to the air inlet, and the other end of which is connected to the exhaust gas storage container; an exhaust gas storage container (3) for collecting the exhaust gas introduced through the flow guide pipe (2); An exhaust backflow prevention valve (4) is provided inside the guide pipe (2) near the exhaust gas storage container (3) to prevent exhaust gas in the storage container from flowing back into the guide pipe; A sewage outlet (5) is connected to the bottom of the waste gas storage container and is provided with a sewage valve to facilitate the removal of accumulated pollutants; An exhaust port (6) is provided above the waste gas storage container and communicates with the interior of the waste gas storage container, and is used to discharge the waste gas that has completed detection from the waste gas storage container; in The exhaust backflow prevention valve (4) is a one-way valve structure, and when the pressure in the container exceeds the set value, the valve core automatically closes; and The exhaust gas storage container is further equipped with an airflow straightening plate (8) arranged in the direction of exhaust gas inflow.

2. The exhaust gas storage device for exhaust gas detection according to claim 1, characterized in that: The air inlet (1) is further provided with a particle filter (7), and the particle filter (7) comprises a series of filter screens with different pore sizes.

3. The exhaust gas storage device for exhaust gas detection according to claim 1, characterized in that: The inner wall of the waste gas storage container (3) is coated with a super-smooth nano-material coating.

4. The exhaust gas storage device for exhaust gas detection according to claim 1, characterized in that: The exhaust port (6) is provided with a filter device (11), and the filter device (11) is circular, with a diameter smaller than the inner diameter of the exhaust port (6), and is fixed at the entrance of the exhaust port (6) by a clamping ring.

5. The exhaust gas storage device for exhaust gas detection according to claim 4, characterized in that: The filter device (11) comprises a primary filter layer and a high-efficiency filter layer.

6. The exhaust gas storage device for exhaust gas detection according to claim 1, characterized in that: The airflow rectifying plate (8) is a plane plate with a certain inclination angle.

7. The exhaust gas storage device for exhaust gas detection according to claim 6, characterized in that: The invention also comprises a multi-stage partition plate (9) located inside the waste gas storage container.

8. The exhaust gas storage device for exhaust gas detection according to claim 7, characterized in that: The multi-stage partition plates (9) are arranged horizontally in multiple stages and form a baffle.

9. The exhaust gas storage device for exhaust gas detection according to claim 1, characterized in that: The device is provided with an airtight buffer zone (10) at the joint between the air inlet (1) and the flow guide tube (2).

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