Counterflow environmental air sampling structure

Abstract

This application discloses a convection-type environmentally friendly air sampling structure, belonging to the field of air sampling. It includes a main body, with a segmented multi-compartment sampling mechanism integrated internally and externally. The segmented multi-compartment sampling mechanism includes a convection component, a main cavity within the component, and multiple sampling tube compartments, with an extraction mechanism positioned above one section of each sampling tube compartment. The beneficial effect of this application is that it provides a convection-type environmentally friendly air sampling structure. When personnel need to sample the air at different times, taking the initial time period as an example, personnel can start one of the drive motors. At this time, the synchronous pulleys around the output end of the drive motor will rotate under the meshing action of the synchronous belt, causing the synchronous pulleys around one of the rotating rods inside the second fixed frame to rotate. Since there are two rotating rods inside the second fixed frame, and both are equipped with first gears, under the meshing of the two first gears, the gear closest to the outermost part can rotate in the opposite direction to the output end of the drive motor.

Description

Technical Field

[0001] This application relates to the field of air sampling, and more specifically, to a convective environmental air sampling structure. Background Technology

[0002] With the acceleration of industrialization and urbanization, the impact of pollutants such as particulate matter, volatile organic compounds, and harmful gases in the air on the ecological environment and human health is becoming increasingly prominent. Accurate monitoring of air quality and tracing the source of pollution have become core requirements for environmental governance. In this process, it is necessary to use convective environmental air sampling devices to complete air sampling and provide a basic carrier for subsequent testing. Its core logic is to achieve efficient capture and stable transmission of air samples through dynamic airflow guidance and precise control, thereby improving the timeliness and accuracy of sampling.

[0003] Currently, most convective environmental air sampling structures use a single sampling chamber design to collect air samples. However, the single sampling chamber design cannot meet the needs of comparing samples at different times and concentration gradients. It cannot achieve continuous time-segmented sampling and archiving, nor can it quickly collect multiple parallel samples in response to sudden pollution events, ultimately resulting in insufficient integrity and diversity of sampling data. Utility Model Content

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] The purpose of this application is to address the shortcomings of existing technologies by providing a convection-type environmentally friendly air sampling structure. This addresses the problem that existing technologies generally use a single sampling chamber design to collect air samples. However, the single sampling chamber design cannot meet the needs of comparing samples at different times and concentration gradients. It cannot achieve continuous time-segmented sampling and archiving, nor can it quickly collect multiple parallel samples in response to sudden pollution events, ultimately resulting in insufficient integrity and diversity of sampling data.

[0006] To achieve the above objectives, this application provides the following technical solution: A convection-type environmentally friendly air sampling structure includes: a main body, and a segmented multi-compartment sampling mechanism is jointly provided inside and outside the main body. The segmented multi-compartment sampling mechanism includes a convection component, a main cavity and multiple sampling tubes, and an extraction mechanism is provided above one section of each of the multiple sampling tubes. The convection component is installed inside and outside the main body, and a sampling component is installed above the multiple sampling tubes.

[0007] Furthermore, the convection assembly includes a main air pipe, which is fixedly located at the upper center of the main body. A dustproof and rainproof head is installed on the top of the main air pipe, and the end of the main air pipe is connected to a main cavity. A fixing plate is fixedly installed in the middle of the upper section of the main cavity, and a centrifugal fan is installed in the middle of the fixing plate. Sampling tube compartments are connected to both sides of the main cavity, and filter screens are installed at the ends of multiple sampling tube compartments.

[0008] Furthermore, the sampling assembly includes a first fixing frame, which is fixedly disposed on both sides of the main cavity. A drive motor is installed on one side of the first fixing frame. A second fixing frame is fixedly disposed on both sides of the inner wall of the main body. Two rotating rods are disposed on the inner side of the second fixing frame. A synchronous pulley is fixedly disposed around the front section and the output end of the drive motor of one of the rotating rods. A synchronous belt is sleeved around the periphery of the two synchronous pulleys. A first gear is fixedly disposed around the periphery of the ends of the two rotating rods. A second gear is fixedly disposed on the top of the other rotating rod and the drive motor. A rack meshes between the opposite sides of the two second gears. A sealing guide plate is fixedly disposed at the bottom end of the two racks. A guide frame is fixedly disposed at both ends of the plurality of sampling tube chambers.

[0009] Furthermore, the second gear and the rack are connected by a meshing transmission.

[0010] Furthermore, the guide frame and its sealing guide plate are connected by a lifting guide connection.

[0011] Furthermore, the extraction mechanism includes a first air tube, which is connected above a section of the sampling chamber. A solenoid valve is installed at the end of the first air tube, and the other end of the solenoid valve is connected to a second air tube.

[0012] Furthermore, the first air tube is connected to the second air tube in a controllable on / off manner using a solenoid valve.

[0013] The beneficial effects of this application are as follows: When staff need to take air samples at different times, taking the initial time period as an example, they can start one of the drive motors. At this time, the synchronous pulleys around the output end of the drive motor will rotate under the meshing action of the synchronous belt, causing the synchronous pulleys around one of the rotating rods inside the second fixed frame to rotate. Since there are two rotating rods inside the second fixed frame, and both of them are equipped with first gears, under the meshing of the two first gears, the gear closest to the outermost end can rotate in the opposite direction to the output end of the drive motor. This causes the second gear at the end of the drive motor output end and the end of the rotating rod in the middle of the first gear to rotate synchronously in the opposite direction. The components rotate relative to each other, and the inner racks and sealing guide plates at their ends rise from the middle of the guide frames at both ends of the sampling tube chamber. This creates convection between the sampling tube chamber, the main chamber, and the main air pipe. In this state, the personnel start the centrifugal fan to ventilate. The external air on one side of the sampling tube chamber passes through the filter screen to block irrelevant impurities and is then discharged again along the main air pipe. During this process, the personnel only need to use the structure of the sampling components to return the sealing guide plates back into the guide frames for isolation, thus completing the air collection and sampling for that period. Similarly, other sampling tube chambers can be used for sampling at other times.

[0014] When it is necessary to test the air in multiple sampling chambers, the sampling chamber to be tested can be selected, and the end of the second air tube corresponding to the sampling chamber can be connected to the air tube of the external testing mechanism. Then, the air pump of the air tube section of the external testing mechanism and the solenoid valve at one end of the second air tube can be turned on simultaneously. Under the pressure of the air pump, the air to be tested in the sampling chamber can enter the testing mechanism for corresponding testing along the first air tube, the second air tube and the external air tube. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0016] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0017] In the attached diagram: Figure 1 This is a three-dimensional structural diagram of the present application; Figure 2 This is a schematic diagram of a three-dimensional partial structure of this application; Figure 3 This is a schematic diagram of a partial structure of the main cavity of this application; Figure 4 This is a schematic diagram showing a partial structural detail of this application.

[0018] Figure label: 1. Main body; 2. Segmented multi-compartment sampling mechanism; 21. Convection component; 211. Main air pipe; 212. Dustproof and rainproof head; 213. Main cavity; 214. Fixing plate; 215. Centrifugal fan; 216. Sampling tube compartment; 217. Filter screen; 22. Sampling component; 221. First fixing frame; 222. Drive motor; 223. Second fixing frame; 224. Rotating rod; 225. Synchronous pulley; 226. Synchronous belt; 227. First gear; 228. Second gear; 229. Rack; 2210. Sealing guide plate; 2211. Guide frame; 3. Extraction mechanism; 31. First air pipe; 32. Solenoid valve; 33. Second air pipe. Detailed Implementation

[0019] The convective environmental air sampling structure provided in this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this application.

[0020] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0021] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0022] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] Reference Figure 1-4As shown, this utility model provides a convection-type environmentally friendly air sampling structure, including: a main body 1, with a segmented multi-compartment sampling mechanism 2 jointly installed inside and outside the main body 1. The segmented multi-compartment sampling mechanism 2 includes a convection component 21, a main cavity 213, and multiple sampling tubes 216. An extraction mechanism 3 is provided above one section of each sampling tube 216. The convection component 21 is installed inside and outside the main body 1 and includes a main air pipe 211, which is fixed to the upper middle part of the main body 1. A dustproof and rainproof head 212 is installed on the top of the main air pipe 211, and the end of the main air pipe 211 is connected to the main cavity 213. A fixing plate 214 is fixed to the middle of the upper section of the main cavity 213, and a centrifugal fan is installed in the middle of the fixing plate 214. 215. Sampling chambers 216 are connected to both sides of the main cavity 213, and filters 217 are provided at the ends of the multiple sampling chambers 216. A sampling assembly 22 is installed above the multiple sampling chambers 216. The sampling assembly 22 includes a first fixing frame 221, which is fixed to both sides of the main cavity 213. A drive motor 222 is installed on one side of the first fixing frame 221. A second fixing frame 223 is fixed to both sides of the inner wall of the main body 1, and two rotating rods 224 are provided on the inner side of the second fixing frame 223. A synchronous pulley 225 is fixed to the front section of one of the rotating rods 224 and the periphery of the output end of the drive motor 222. A synchronous belt 226 is sleeved around the periphery of the two synchronous pulleys 225. The periphery of the ends of the two rotating rods 224 is... A first gear 227 is fixedly mounted on one side, and a second gear 228 is fixedly mounted on the top of another rotating rod 224 and the drive motor 222. The two second gears 228 are meshed with racks 229 on opposite sides, forming a meshing transmission connection. Sealing guide plates 2210 are fixedly mounted at the bottom ends of the two racks 229. Guide frames 2211 are fixedly mounted at both ends of the multiple sampling tube chambers 216, forming a lifting guide connection between the guide frames 2211 and the sealing guide plates 2210. When staff need to sample the air in different time periods, taking the initial time period as an example, staff can start one of the drive motors 222. At this time, the synchronous pulleys 225 around the output end of the drive motor 222 will be driven by the meshing action of the synchronous belt 226. The synchronous wheel 225 around one of the rotating rods 224 inside the second fixed frame 223 rotates. Since there are two rotating rods 224 inside the second fixed frame 223 and both of them are equipped with first gears 227, under the meshing of the two first gears 227, the gear closest to the outermost side can rotate in the opposite direction with the output end of the drive motor 222. This causes the second gear 228 at the end of the output end of the drive motor 222 and the end of the rotating rod 224 in the middle of the first gear 227 to rotate synchronously in opposite directions. They mesh with the inner rack 229 and the sealing guide plate 2210 at its end, which rise from the middle of the guide frame 2211 at both ends of the sampling tube chamber 216, so that convection is formed between the sampling tube chamber 216, the main cavity 213, and the main air pipe 211.In this state, personnel activate the centrifugal fan 215 for convection ventilation. External air from one side of the sampling chamber 216 passes through the filter screen 217 to block irrelevant impurities and is then discharged again along the main air pipe 211. During this process, personnel only need to use the structure of the sampling component 22 to return the sealing guide plate 2210 back into the guide frame 2211 for isolation, thus completing the air collection and sampling for this period. Similarly, for sampling at other times, other sampling chambers 216 can be used.

[0024] The extraction mechanism 3 includes a first air pipe 31, which is connected to the upper part of a section of the sampling chamber 216. The end of the first air pipe 31 is equipped with a solenoid valve 32, and the other end of the solenoid valve 32 is connected to a second air pipe 33. The first air pipe 31 forms a controllable on / off connection with the solenoid valve 32 and the second air pipe 33. When it is necessary to test the air in multiple sampling chambers 216, the sampling chamber 216 to be tested can be selected, and the end of the second air pipe 33 corresponding to the sampling chamber 216 can be connected to the air pipe of the external testing mechanism. Then, the air pump of the air pipe section of the external testing mechanism and the solenoid valve 32 at one end of the second air pipe 33 are opened simultaneously. Thus, under the pressure of the air pump, the air to be tested in the sampling chamber 216 can enter the testing mechanism for corresponding testing along the guidance of the first air pipe 31, the second air pipe 33 and the external air pipe.

[0025] Working principle: When using this convection-type environmentally friendly air sampling structure, if staff need to sample the air at different times, taking the initial time period as an example, the staff can start one of the drive motors 222. At this time, the synchronous pulleys 225 around the output end of the drive motor 222 will rotate under the meshing action of the synchronous belt 226, causing the synchronous pulleys 225 around one of the rotating rods 224 inside the second fixed frame 223 to rotate. Since there are two rotating rods 224 inside the second fixed frame 223, and both of them are surrounded by the first synchronous pulleys 225... Under the meshing of the two first gears 227, the gear closest to the outermost part can rotate in the opposite direction to the output end of the drive motor 222. This causes the second gear 228 at the end of the output end of the drive motor 222 and the end of the rotating rod 224 in the middle of the first gear 227 to rotate synchronously in opposite directions. Each gear meshes with the inner rack 229 and the sealing guide plate 2210 at its end, which rise from the middle of the guide frame 2211 at both ends of the sampling tube chamber 216, so that the sampling tube chamber 216 and the main cavity 2 Convection is formed between sampling chamber 13 and main air pipe 211. In this state, personnel start centrifugal fan 215 to perform convection ventilation. External air on one side of sampling chamber 216 passes through filter screen 217 to block irrelevant impurities and is discharged again along main air pipe 211. During this process, personnel only need to use the structure of sampling component 22 to return the sealing guide plate 2210 back into the guide frame 2211 for isolation to complete the air collection and sampling for this period. Similarly, other sampling chambers 216 can be used for sampling at other times. When it is necessary to test the air in multiple sampling chambers 216, the sampling chamber 216 to be tested can be selected, and the end of the second air pipe 33 corresponding to the sampling chamber 216 can be connected to the air pipe of the external testing mechanism. Then, the air pump of the air pipe section of the external testing mechanism and the solenoid valve 32 at one end of the second air pipe 33 can be opened simultaneously. Thus, under the pressure of the air pump, the air to be tested in the sampling chamber 216 can enter the testing mechanism for corresponding testing along the first air pipe 31, the second air pipe 33 and the external air pipe.

[0026] It should be noted that the above-mentioned testing institutions adopt mature existing technologies on the market. Their specific structure and working principle are not the core of the improvement of this solution, nor do they involve the innovative design of this solution. Therefore, they are only briefly mentioned in this solution and will not be elaborated further. {This testing institution (instrument) can be the LB-6120 integrated atmospheric sampler}.

[0027] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

[0028] It should be noted that this application covers any alternatives, modifications, equivalent methods, and solutions made within the spirit and scope of this application. To provide the public with a thorough understanding of this application, specific details are described in detail in the preferred embodiments, while those skilled in the art can fully understand this application without these details. Furthermore, to avoid unnecessary confusion regarding the substance of this application, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0029] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A convection-type environmentally friendly air sampling structure, including: The main body (1) is characterized in that: the main body (1) is equipped with a segmented multi-compartment sampling mechanism (2) on its inner and outer sides. The segmented multi-compartment sampling mechanism (2) includes a convection component (21) and a main cavity (213) therein, as well as multiple sampling tube compartments (216). An extraction mechanism (3) is provided above one section of each of the multiple sampling tube compartments (216). The convection component (21) is installed inside and outside the main body (1), and a sampling component (22) is installed above the multiple sampling tube compartments (216).

2. The convection-type environmentally friendly air sampling structure according to claim 1, characterized in that: The convection assembly (21) includes a main air pipe (211), which is fixed in the upper middle part of the main body (1). A dustproof and rainproof head (212) is installed on the top of the main air pipe (211), and the end of the main air pipe (211) is connected to a main cavity (213). A fixing plate (214) is fixed in the middle of the upper section of the main cavity (213), and a centrifugal fan (215) is installed in the middle of the fixing plate (214). Sampling tube chambers (216) are connected on both sides of the main cavity (213), and a filter screen (217) is provided at the end of the multiple sampling tube chambers (216).

3. The convection-type environmentally friendly air sampling structure according to claim 1, characterized in that: The sampling assembly (22) includes a first fixing frame (221), which is fixed on both sides of the main cavity (213). A drive motor (222) is installed on one side of the first fixing frame (221). A second fixing frame (223) is fixed on both sides of the inner wall of the main body (1). Two rotating rods (224) are provided on the inner side of the second fixing frame (223). A synchronous pulley (225) is fixed on the front section of one of the rotating rods (224) and around the output end of the drive motor (222). A timing belt (226) is fitted around the periphery of two synchronous pulleys (225), a first gear (227) is fixed around the periphery of the ends of the two rotating rods (224), a second gear (228) is fixed at the top of the other rotating rod (224) and the drive motor (222), and racks (229) mesh on opposite sides of the two second gears (228), a sealing guide plate (2210) is fixed at the bottom end of the two racks (229), and a guide frame (2211) is fixed at both ends of the plurality of sampling tube chambers (216).

4. The convection-type environmentally friendly air sampling structure according to claim 3, characterized in that: The second gear (228) and the rack (229) are meshed and connected.

5. The convection-type environmentally friendly air sampling structure according to claim 3, characterized in that: The guide frame (2211) and its sealing guide plate (2210) are connected by a lifting guide.

6. The convection-type environmentally friendly air sampling structure according to claim 1, characterized in that: The extraction mechanism (3) includes a first air tube (31), which is connected above a section of the sampling tube chamber (216). The end of the first air tube (31) is equipped with a solenoid valve (32), and the other end of the solenoid valve (32) is connected to a second air tube (33).

7. The convection-type environmentally friendly air sampling structure according to claim 6, characterized in that: The first air tube (31) is connected to the second air tube (33) by means of a solenoid valve (32).

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