A collection device for gas detection

Abstract

This utility model discloses a gas detection and collection device, including an air inlet channel component and a filter screen. A top cover is fixedly connected to the top of the air inlet channel component via a connecting rod. The filter screen is rotatably sleeved between the air inlet channel component and the top cover. A driving component is fixedly connected to the bottom of the air inlet channel component, and an annular tooth is fixedly connected to the bottom of the filter screen. The driving component meshes with the annular tooth. This utility model uses a drive motor to rotate the filter screen, and simultaneously utilizes a mechanical linkage structure to enable a cleaning brush to clean the filter screen synchronously. This achieves automatic and continuous cleaning of the filter screen during gas collection, effectively preventing particulate matter from clogging the mesh and ensuring gas collection efficiency and continuity. The cooperation between the wave ring and the movable plate allows the cleaning brush to move up and down as it moves with the filter screen. This adaptive adjustment ensures that the cleaning brush and the filter screen surface always maintain a moderate and uniform contact pressure, thus improving the cleaning effect.

Description

Technical Field

[0001] This utility model relates to the technical field of gas collection devices, and in particular to a gas collection device for detection. Background Technology

[0002] In fields such as environmental monitoring, industrial safety, and emergency response, gas detection and sampling devices are key equipment for acquiring gas samples from target areas and performing subsequent component analysis. Existing sampling devices typically consist of a sampling pump, gas pipeline, air inlet, and a filter screen or dust filter head located at the air inlet end. Their working principle is to draw ambient gas through a power source, allow the gas to pass through the filter screen to initially remove large particles of dust and impurities, and then enter the detection sensor or sampler. This is intended to protect the precision sensor from contamination and ensure the smooth flow of the gas path.

[0003] However, in actual use, the core protective component of the aforementioned device—the filter screen—quickly adsorbs a large amount of impurities and dust in complex and variable working environments with high dust concentrations, leading to clogging of the mesh. This not only increases airflow resistance, increases the load on the sampling pump, and raises energy consumption, but more seriously, the clogged filter screen significantly alters the gas permeability and flow rate, hindering the free diffusion and uniform passage of the target gas, thereby causing adsorption, desorption, or chemical reactions. Ultimately, this results in distorted gas samples and deviations in concentration values, seriously affecting the accuracy and reliability of the detection data.

[0004] Therefore, how to provide a gas detection and collection device is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] One objective of this invention is to provide a gas detection collection device, which solves the problems mentioned in the background art.

[0006] A gas detection and collection device according to an embodiment of the present invention includes an air inlet channel component and a filter screen. The top of the air inlet channel component is fixedly connected to a top cover via a connecting rod. The filter screen is rotatably sleeved between the air inlet channel component and the top cover. A driving component is fixedly connected to the bottom of the air inlet channel component, and an annular tooth is fixedly connected to the bottom of the filter screen. The driving component meshes with the annular tooth. A mounting component is fixedly connected to the top of the top cover. A cleaning component is provided on the mounting component, and the side of the cleaning component is movably connected to the side of the filter screen.

[0007] The driving component includes a drive motor and a drive gear. The drive motor is fixedly connected to the surface of the air intake channel component, and the drive gear is fixedly connected to the output shaft end of the drive motor. The drive gear meshes with a ring gear.

[0008] The cleaning component includes a rotating tube and a cleaning brush. The rotating tube is rotatably connected to the mounting component, and the cleaning brush is fixedly sleeved on the surface of the rotating tube. The side of the cleaning brush is movably connected to the side of the filter screen.

[0009] The cleaning component also includes a drive ring and a drive disc. The drive ring is fixedly connected to the top of the filter screen, the drive disc is fixedly sleeved on the surface of the rotating tube, and the drive disc is movably connected to the side of the drive ring.

[0010] The mounting components include a fixed block, a movable groove, a guide rod, a spring, a wave ring, and a movable plate. The fixed block is fixedly connected to the top of the top cover. The movable groove is opened on the side of the fixed block. The guide rod is vertically fixedly connected inside the movable groove. The movable plate is movably connected inside the movable groove and movably sleeved on the surface of the guide rod. The spring is movably sleeved on the surface of the guide rod. The top end of the spring is movably connected to the top of the inner wall of the movable groove, and the bottom end of the spring is movably connected to the upper surface of the movable plate. The rotating tube is rotatably connected to the movable plate. The wave ring is fixedly connected to the top of the filter screen, and the lower surface of the movable plate is movably connected to the upper surface of the wave ring.

[0011] The top of the cover is provided with an inflation assembly, which includes an air pump, an air tube, a flexible tube and a rotating joint. The air pump is fixedly connected to the top of the cover, the air tube is fixedly connected to the port of the air pump, the other end of the air tube is fixedly connected to the side of the flexible tube and communicates with it, the other end of the flexible tube is fixedly connected to the rotating joint, and the rotating joint is rotatably connected to the top of the rotating tube.

[0012] The inflation assembly includes an inner tube and an inner air guide plate. The inner tube is fixedly connected to one end of the flexible tube. The bottom end of the inner tube extends through the top cover to the bottom of the top cover and is located inside the filter screen. The inner air guide plate is fixedly connected to the side of the inner tube. The air outlet of the inner air guide plate faces the inside of the filter screen, and the air outlet of the inner air guide plate is inclined and offset from the position of the cleaning brush.

[0013] The beneficial effects of this utility model are:

[0014] The filter screen is rotated by a drive motor, and the cleaning brush cleans the filter screen synchronously using a mechanical linkage structure. This achieves automatic and continuous cleaning of the filter screen during gas collection, effectively preventing particulate matter from clogging the mesh and ensuring gas collection efficiency and continuity. The cooperation between the wave ring and the movable plate allows the cleaning brush to move up and down as it moves with the filter screen. This adaptive adjustment ensures that the cleaning brush and the filter screen surface always maintain a moderate and uniform contact pressure, which improves the cleaning effect.

[0015] The cleaning mechanism combines "inside-out" and "inside-out" air-filled components. This combined internal and external cleaning method more thoroughly removes contaminants adhering to both the inside and outside of the filter, resulting in significantly better cleaning performance than a single method. The air-filled components blow air into the inner tube, which is then guided to the inside of the filter via an internal air guide plate. This airflow loosens and helps clear blockages inside and outside the mesh, working synergistically with the cleaning brush. Furthermore, it actively "blows" or "guides" the external gas to be detected towards the filter, enhancing the power and efficiency of gas collection. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a three-dimensional structural diagram of the driving component position in a gas detection and acquisition device proposed in this utility model.

[0018] Figure 2 This is a three-dimensional structural diagram of the mounting component location in a gas detection and collection device proposed in this utility model.

[0019] Figure 3 This is a cross-sectional three-dimensional structural diagram of the position of the gas filling component in a gas detection and collection device proposed in this utility model.

[0020] Figure 4 This is a three-dimensional structural diagram of the gas filling component in a gas detection and collection device proposed in this utility model.

[0021] The attached diagram shows: 1. Air intake channel component; 2. Filter screen; 3. Top cover; 4. Drive component; 5. Ring gear; 6. Mounting component; 7. Cleaning component; 8. Drive motor; 9. Drive gear; 10. Rotary tube; 11. Cleaning brush; 12. Drive ring; 13. Drive disc; 14. Fixing block; 15. Movable groove; 16. Guide rod; 17. Spring; 18. Wave ring; 19. Movable plate; 20. Inflation assembly; 21. Air pump; 22. Air pipe; 23. Flexible tube; 24. Rotary joint; 25. Inner tube; 26. Inner air guide plate. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0023] refer to Figure 1-4In this embodiment, an air intake channel component 1 and a filter screen 2 are included. The top of the air intake channel component 1 is fixedly connected to a top cover 3 via a connecting rod. The filter screen 2 is rotatably sleeved between the air intake channel component 1 and the top cover 3. A driving component 4 is fixedly connected to the bottom of the air intake channel component 1. A ring tooth 5 is fixedly connected to the bottom of the filter screen 2. The driving component 4 meshes with the ring tooth 5. The driving component 4 includes a driving motor 8 and a driving gear 9. The driving motor 8 is fixedly connected to the surface of the air intake channel component 1. The driving gear 9 is fixedly connected to the output shaft end of the driving motor 8. The driving gear 9 meshes with the ring tooth 5.

[0024] In specific implementation, the drive component 4 is used to rotate the filter screen 2 during cleaning. The drive motor 8 in the drive component 4 uses existing motor components, which are existing technologies and will not be elaborated here. Secondly, the drive motor 8 is powered by an external municipal power supply system and controlled by an independent switch. Of course, it can also be integrated into the entire collection device and controlled by the controller inside the collection device. The air intake channel component 1 is part of the collection device, which is an existing technology component. During collection, the air intake channel component 1 is used to intake air, and the filter screen 2 filters out larger impurities in the air.

[0025] refer to Figure 1-4 In this embodiment, the top of the top cover 3 is fixedly connected to the mounting component 6. The mounting component 6 includes a fixing block 14, a movable groove 15, a guide rod 16, a spring 17, a wave ring 18, and a movable plate 19. The fixing block 14 is fixedly connected to the top of the top cover 3. The movable groove 15 is opened on the side of the fixing block 14. The guide rod 16 is vertically fixedly connected to the inside of the movable groove 15. The movable plate 19 is movably connected to the inside of the movable groove 15 and movably sleeved on the surface of the guide rod 16. The spring 17 is movably sleeved on the surface of the guide rod 16. The top end of the spring 17 is movably connected to the top of the inner wall of the movable groove 15. The bottom end of the spring 17 is movably connected to the upper surface of the movable plate 19. The rotating tube 10 is rotatably connected to the movable plate 19. The wave ring 18 is fixedly connected to the top of the filter screen 2. The lower surface of the movable plate 19 is movably connected to the upper surface of the wave ring 18.

[0026] In practice, the mounting part 6 is used to fix the cleaning part 7. The movable plate 19 is guided to move by the guide rod 16. Then the elastic force of the spring 17 pushes the movable plate 19 close to the entire wave ring 18. When moving, the rotation of the filter screen 2 will cause the driving ring 12 and the wave ring 18 to rotate synchronously. The rotation of the wave ring 18 will squeeze the movable plate 19, causing the movable plate 19 to move up and down. In this way, the movable plate 19 will jump up and down.

[0027] refer to Figure 1-4In this embodiment, the mounting component 6 is provided with a cleaning component 7. The side of the cleaning component 7 is movably connected to the side of the filter screen 2. The cleaning component 7 includes a rotating tube 10 and a cleaning brush 11. The rotating tube 10 is rotatably connected to the mounting component 6, and the cleaning brush 11 is fixedly sleeved on the surface of the rotating tube 10. The side of the cleaning brush 11 is movably connected to the side of the filter screen 2.

[0028] In practice, the filter screen 2 rotates while the rotating tube 10 and the cleaning brush 11 remain stationary. As the filter screen 2 rotates, the cleaning brush 11 cleans the impurities on the surface of the filter screen 2, improving its cleanliness. During cleaning, the moving plate 19 bounces up and down, causing the rotating tube 10 to bounce up and down with it. The bouncing of the rotating tube 10 causes the cleaning brush 11 to bounce up and down on the surface of the filter screen 2, further improving the cleaning of the filter screen 2 surface during the bouncing motion.

[0029] refer to Figure 1-4 In this embodiment, the cleaning component 7 also includes a drive ring 12 and a drive disc 13. The drive ring 12 is fixedly connected to the top of the filter screen 2, and the drive disc 13 is fixedly sleeved on the surface of the rotating tube 10. The drive disc 13 is movably connected to the side of the drive ring 12.

[0030] In practice, since the movable plate 19 and the drive plate 13 are fixed, when the drive ring 12 rotates with the filter screen 2, the rotation of the drive ring 12 will drive the drive plate 13 to rotate. The rotation of the drive plate 13 will cause the rotating tube 10 to rotate on the movable plate 19. The rotation of the rotating tube 10 will drive the cleaning brush 11 to rotate. In this way, the rotation of the filter screen 2 plus the rotation of the cleaning brush 11, when the rotating tube 10 jumps up and down, the drive plate 13 will also jump up and down, further improving the cleaning effect on the filter screen 2.

[0031] refer to Figure 1-4 In this embodiment, an inflation assembly 20 is provided on the top of the top cover 3. The inflation assembly 20 includes an air pump 21, an air pipe 22, a flexible tube 23, and a rotating joint 24. The air pump 21 is fixedly connected to the top of the top cover 3, the air pipe 22 is fixedly connected to the port of the air pump 21, the other end of the air pipe 22 is fixedly connected to the side of the flexible tube 23 and communicates with it, the other end of the flexible tube 23 is fixedly connected to the rotating joint 24, and the rotating joint 24 is rotatably connected to the top of the rotating tube 10. The inflation assembly 20 includes an inner tube 25 and an inner air guide plate 26. The inner tube 25 is fixedly connected to one end of the flexible tube 23. The bottom end of the inner tube 25 passes through the top cover 3 and extends to the bottom of the top cover 3 and is located inside the filter screen 2. The inner air guide plate 26 is fixedly connected to the side of the inner tube 25. The air outlet of the inner air guide plate 26 faces the inside of the filter screen 2, and the air outlet of the inner air guide plate 26 is inclined and offset from the position of the cleaning brush 11.

[0032] In specific implementation, the power supply method of the air pump 21 and the drive motor 8 is the same as that of the entire data acquisition device. The control method will not be described in detail again. Similar to the drive motor 8, the air pump 21 starts blowing air. The air passes through the air pipe 22 to the flexible pipe 23, and then through the flexible pipe 23 and the rotating joint 24 to the inside of the rotating tube 10. Here, the side of the rotating tube 10 has several through holes that communicate with the cleaning brush 11 and the inner wall of the rotating tube 10. When inflating, the air is sprayed out from the air holes to blow air onto the cleaning brush 11, causing the impurities on the surface of the cleaning brush 11 to be blown off, improving the efficiency of air collection. The overall cleaning brush 11 ensures cleanliness. Secondly, the flexible tube 23 is easy to bend and deform, avoiding affecting the up-and-down reciprocating movement of the rotating tube 10 and the movable plate 19. Moreover, the gas inside the flexible tube 23 will rush into the inner tube 25. The gas on the inner tube 25 will reach the inner air guide plate 26 and finally be sprayed out from the inner air guide plate 26. Then, the gas blown on the inner air guide plate 26 will reach the inner wall of the filter screen 2. The gas will be sprayed out from the inside of the filter screen 2 to blow the filter screen 2 in the opposite direction, preventing dust from sticking to the filter screen 2 after cleaning and improving the overall cleaning ability of the filter screen 2.

[0033] The working principle of this utility model is as follows:

[0034] The external gas to be detected enters the collection device through the air inlet channel 1. When the filter screen 2 needs cleaning, the drive motor 8 is started first. The drive motor 8, through the drive gear 9 on its output shaft, meshes with the ring gear 5 at the bottom of the filter screen 2, thereby driving the filter screen 2 to rotate. At the same time, the rotation of the filter screen 2 is achieved through the cooperation between the drive ring 12 at its top and the drive disc 13 fixedly sleeved on the rotating tube 10. Here, the drive disc 13 is rotated by friction, which in turn drives the rotating tube 10 to rotate synchronously. The rotating tube 10 then drives the cleaning brush 11 on its surface to brush the outer surface of the filter screen 2 to remove the adhering substances. In addition, the wave ring 18 at the top of the filter screen 2 rotates together with it. The wave-shaped surface of the wave ring 18 contacts the lower surface of the movable plate 19, forcing the movable plate 19 to overcome the spring 17. The force along the guide rod 16 generates a continuous up-and-down reciprocating motion, thereby driving the rotating tube 10 and the cleaning brush 11 to move up and down accordingly. This allows the cleaning brush 11 to adaptively clean the surface of the filter screen 2. At the same time, the air pump 21 starts, drawing gas into the rotating tube 10 through the air pipe 22, flexible tube 23, and rotating joint 24. The airflow blows from the air holes on the rotating tube 10 onto the cleaning brush 11 to clean it, preventing excessive dust from affecting the cleaning process. Secondly, the airflow also blows out from the inner air guide plate 26 at the bottom of the inner tube 25. This airflow not only sweeps the filter screen 2 from the inside, assisting the cleaning brush 11 in preventing the filter screen 2 from clogging, but also enhances the power of the gas flow towards the filter screen 2, improving the collection efficiency. Throughout the process, cleaning, sweeping, and filtering are carried out simultaneously, achieving efficient and stable gas collection.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A gas detection and collection device, characterized in that, It includes an air intake channel component (1) and a filter screen (2). The top of the air intake channel component (1) is fixedly connected to a top cover (3) via a connecting rod. The filter screen (2) is rotatably sleeved between the air intake channel component (1) and the top cover (3). The bottom of the air intake channel component (1) is fixedly connected to a driving component (4). The bottom of the filter screen (2) is fixedly connected to an annular tooth (5). The driving component (4) meshes with the annular tooth (5). The top of the top cover (3) is fixedly connected to the mounting part (6), and a cleaning part (7) is provided on the mounting part (6). The side of the cleaning part (7) is movably connected to the side of the filter screen (2).

2. The gas detection and collection device according to claim 1, characterized in that, The drive component (4) includes a drive motor (8) and a drive gear (9). The drive motor (8) is fixedly connected to the surface of the air intake channel component (1), and the drive gear (9) is fixedly connected to the output shaft end of the drive motor (8). The drive gear (9) meshes with the ring gear (5).

3. The gas detection and collection device according to claim 2, characterized in that, The cleaning component (7) includes a rotating tube (10) and a cleaning brush (11). The rotating tube (10) is rotatably connected to the mounting component (6), and the cleaning brush (11) is fixedly sleeved on the surface of the rotating tube (10). The side of the cleaning brush (11) is movably connected to the side of the filter screen (2).

4. A gas detection collection device according to claim 3, characterized in that, The cleaning component (7) also includes a drive ring (12) and a drive disc (13). The drive ring (12) is fixedly connected to the top of the filter screen (2), and the drive disc (13) is fixedly sleeved on the surface of the rotating tube (10). The drive disc (13) is movably connected to the side of the drive ring (12).

5. A gas detection collection device according to claim 4, characterized in that, The mounting component (6) includes a fixed block (14), a movable groove (15), a guide rod (16), a spring (17), a wave ring (18), and a movable plate (19). The fixed block (14) is fixedly connected to the top of the top cover (3). The movable groove (15) is opened on the side of the fixed block (14). The guide rod (16) is vertically fixedly connected to the inside of the movable groove (15). The movable plate (19) is movably connected to the inside of the movable groove (15) and movably sleeved on the surface of the guide rod (16). The spring (17) is movably sleeved on the surface of the guide rod (16). The top end of the spring (17) is movably connected to the top of the inner wall of the movable groove (15). The bottom end of the spring (17) is movably connected to the upper surface of the movable plate (19). The rotating tube (10) is rotatably connected to the movable plate (19). The wave ring (18) is fixedly connected to the top of the filter screen (2). The lower surface of the movable plate (19) is movably connected to the upper surface of the wave ring (18).

6. A gas detection collection device according to claim 5, characterized in that, The top of the top cover (3) is provided with an inflation assembly (20). The inflation assembly (20) includes an air pump (21), an air pipe (22), a flexible tube (23), and a rotating joint (24). The air pump (21) is fixedly connected to the top of the top cover (3). The air pipe (22) is fixedly connected to the port of the air pump (21). The other end of the air pipe (22) is fixedly connected to the side of the flexible tube (23) and communicates with it. The other end of the flexible tube (23) is fixedly connected to the rotating joint (24). The rotating joint (24) is rotatably connected to the top of the rotating tube (10).

7. A gas detection collection device according to claim 6, characterized in that, The inflation assembly (20) includes an inner tube (25) and an inner air guide plate (26). The inner tube (25) is fixedly connected to one end of the flexible tube (23). The bottom end of the inner tube (25) extends through the top cover (3) to the bottom of the top cover (3) and is located inside the filter screen (2). The inner air guide plate (26) is fixedly connected to the side of the inner tube (25). The air outlet of the inner air guide plate (26) faces the inside of the filter screen (2), and the air outlet of the inner air guide plate (26) is inclined and offset from the position of the cleaning brush (11).

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