Air sampler for exhaust gas detection

Abstract

The utility model discloses an air sampler for waste gas detection, including sampler body, the sampler body top surface is connected with the connecting pipe, the connecting pipe top is fixed with the lower collection head, the lower collection head top surface is equipped with the upper collection head, the upper collection head and the lower collection head outer wall all are fixed with the fixed disc, and a plurality of groups fixed disc outside are provided with a plurality of groups fixed mechanism, the fixed mechanism includes the plug -in rod and the fixed cover, and the plug -in rod is inserted in a plurality of groups fixed disc and is inserted with the fixed cover, and the fixed cover inner wall is equipped with the installation groove, a plurality of groups are arranged to the installation groove and the inside rotation is equipped with the clamping block, and the push spring is connected and established between a plurality of groups clamping block outer wall and the installation groove, a plurality of groups are arranged to the push spring, and the plug -in rod outer wall is equipped with the clamping groove, and the device replaces traditional bolt connection through the plug -in type fixed mechanism, realizes the quick assembly and separation of collection head and connecting pipe, and significantly simplifies the filter membrane replacement process.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas detection technology, and more specifically, it relates to an air sampler for exhaust gas detection. Background Technology

[0002] In practical scenarios such as ambient air quality monitoring, industrial emission control, and public health protection, air samplers require regular filter replacement to ensure the accuracy and timeliness of data collection. However, current mainstream equipment uses traditional bolt fastening for the sampling head and connecting tube. When the filter is saturated or contaminated, maintenance personnel must first disconnect the physical connection between the two before they can access and replace the filter assembly located inside the connecting tube. This process involves multiple disassembly and assembly steps, and is often limited by bolt specifications and the space available for applying force, requiring the use of specialized wrenches and other auxiliary tools, significantly extending the maintenance cycle and reducing on-site work efficiency. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the problems existing in the prior art, this utility model provides an air sampler for exhaust gas detection to solve the technical problems mentioned in the background art.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: an air sampler for exhaust gas detection, comprising a sampler body, a connecting pipe connected to the top surface of the sampler body, a lower sampling head fixedly mounted at the top of the connecting pipe, an upper sampling head mounted on the top surface of the lower sampling head, and fixed plates fixedly mounted on the outer walls of both the upper and lower sampling heads. Multiple sets of fixing mechanisms are arranged on the outer sides of the multiple sets of fixed plates. Each fixing mechanism includes a rod and a fixing sleeve. The rod is inserted into the multiple sets of fixed plates and connected to the fixing sleeve. An installation groove is provided on the inner wall of the fixing sleeve. Multiple sets of installation grooves are provided, each with a rotatable locking block on its inner side. A push spring is connected between the outer wall of each set of locking blocks and the installation groove. Multiple sets of push springs are provided. A locking groove is provided on the outer wall of the rod. An installation ring is provided inside the lower sampling head, and a filter membrane is installed inside the installation ring.

[0007] The present invention is further configured such that a pressure ring is fixedly provided on the bottom surface of the upper sampling head, and the pressure ring abuts against the top surface of the mounting ring. The tight abutment between the pressure ring and the mounting ring achieves stable fixation and precise positioning of the upper sampling head, preventing loosening and displacement during use.

[0008] The present invention is further configured such that each of the outer walls of the multiple sets of fixed disks is provided with insertion holes, and the insertion holes are provided in multiple sets to be inserted into multiple sets of insertion rods respectively. The precise insertion and cooperation between the multiple sets of insertion holes and insertion rods provides a stable connection and reliable load-bearing support, ensuring the firm installation of the fixed disks.

[0009] The present invention is further configured such that a sliding groove is provided on the outer wall of the fixed sleeve, and multiple sets of sliding grooves are provided and slidably connected to a sliding sleeve. An unlocking sleeve is fixedly provided on the inner side of the sliding sleeve, so as to realize the precise guidance and smooth sliding of the unlocking sleeve, and ensure the accurate transmission and reliable control of the unlocking action.

[0010] The present invention is further configured such that a limiting sleeve is fixedly provided on the top surface of the sliding sleeve, and an arc-shaped rod is fixedly provided on the outer wall of the limiting sleeve. Multiple sets of the arc-shaped rod are provided. A rotating sleeve is rotatably provided on the outer wall of the fixed sleeve, and a limiting rod is fixedly provided on the outer wall of the rotating sleeve. Multiple sets of the limiting rod are provided, and each of the outer walls has a limiting hole. Multiple sets of limiting holes are respectively inserted into multiple sets of arc-shaped rods. The precise cooperation between the arc-shaped rod and the limiting hole realizes the limiting control of the rotating sleeve and the accurate indication of the unlocking status, providing reliable operation guidance.

[0011] The present invention is further configured such that a positioning sleeve is fixedly provided on the top surface of the rotating sleeve, and a movable groove is provided on the inner wall of the positioning sleeve. Multiple sets of movable grooves are provided, and positioning blocks are slidably connected to the inner side of each movable groove. A positioning groove is provided on the outer wall of the fixed sleeve, and multiple sets of positioning grooves are provided, each abutting against multiple sets of positioning blocks. A return spring is connected between the top of each set of positioning blocks and the movable groove. The accurate positioning and state locking of the rotating sleeve are achieved through the precise cooperation between the positioning blocks and the positioning grooves. The return spring provides a stable return force and a continuous and reliable positioning function.

[0012] The present invention is further configured such that a compression spring is connected to the bottom surface of the rotating sleeve, and a thrust bearing is connected between the bottom end of the compression spring and the limiting sleeve. The combination of the compression spring and the thrust bearing provides smooth control and buffer protection for the rotation operation, ensuring the smoothness and safety of the operation process.

[0013] The present invention is further configured such that a compression spring is connected to the inner wall of the fixed sleeve, a push block is fixedly provided at the bottom end of the compression spring, and a sliding hole is provided at the top end of the insertion rod. The elastic pressing mechanism of the compression spring and the push block realizes the tight connection between the insertion rod and the fixed sleeve. The push block slides into the sliding hole to provide automatic locking and anti-loosening protection functions.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides an air sampler for exhaust gas detection, which has the following beneficial effects:

[0016] 1. This device replaces traditional bolt connections with a plug-in fixing mechanism, enabling rapid assembly and disassembly of the sampling head and connecting tube, significantly simplifying the filter membrane replacement process. The self-locking structure, employing a combination of elastic locking blocks and push springs, allows for tool-free positioning and locking of the insertion rod, greatly reducing maintenance time and effectively improving on-site work efficiency.

[0017] 2. This design ensures the stability of the filter membrane installation through the double abutment structure of the pressure ring and the mounting ring, which can guarantee the sealing of the filter membrane during the sampling process, thereby maintaining the sampling accuracy and extending the service life of the equipment.

[0018] 3. The device is equipped with a linkage unlocking mechanism and a positioning feedback system. All locking blocks can be released simultaneously through rotation. Combined with the linear motion trajectory guided by the slide groove, the disassembly process provides clear operational guidance. The alignment mechanism between the fixed plate and the socket, along with the elastic reset component, ensures structural reliability and reduces the risk of misoperation, making it suitable for rapid maintenance needs in complex environments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an air sampler for exhaust gas detection according to the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the filter screen in this utility model;

[0021] Figure 3 This is a schematic diagram of the upper acquisition head in this utility model;

[0022] Figure 4 This is a cross-sectional view of the fixing sleeve in this utility model;

[0023] Figure 5 This is a cross-sectional view of the positioning sleeve in this utility model.

[0024] In the diagram: 1. Sampler body; 2. Connecting pipe; 3. Lower sampling head; 4. Upper sampling head; 5. Fixing plate; 6. Insert rod; 7. Fixing sleeve; 8. Mounting groove; 9. Locking block; 10. Push spring; 11. Locking groove; 12. Mounting ring; 13. Filter membrane; 14. Pressure ring; 15. Insertion hole; 16. Sliding groove; 17. Sliding sleeve; 18. Unlocking sleeve; 19. Limiting sleeve; 20. Arc rod; 21. Rotating sleeve; 22. Limiting rod; 23. Limiting hole; 24. Positioning sleeve; 25. Movable groove; 26. Positioning block; 27. Positioning groove; 28. Reset spring; 29. ​​Compression spring; 30. Thrust bearing; 31. Compression spring; 32. Push block; 33. Sliding hole. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0027] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0028] Please see Figures 1-5 An air sampler for detecting exhaust gas includes a sampler body 1. A connecting pipe 2 is connected to the top surface of the sampler body 1. A lower sampling head 3 is fixedly mounted at the top of the connecting pipe 2. An upper sampling head 4 is mounted on the top surface of the lower sampling head 3. Fixing plates 5 are fixedly mounted on the outer walls of both the upper sampling head 4 and the lower sampling head 3. Multiple fixing mechanisms are provided on the outer sides of the multiple sets of fixing plates 5. Each fixing mechanism includes a rod 6 and a fixing sleeve 7. The rod 6 is inserted into the multiple sets of fixing plates 5 and is also inserted into the fixing sleeve 7. The inner wall of the fixing sleeve 7 has an installation groove 8. Multiple sets of installation grooves 8 are provided, and each set has a rotatable locking block 9 on its inner side. Push springs 10 are connected between the outer walls of the multiple sets of locking blocks 9 and the installation grooves 8. Multiple sets of push springs 10 are provided. The outer wall of the rod 6 has a locking groove 11. An installation ring 12 is provided inside the lower sampling head 3. A filter membrane 13 is installed inside the installation ring 12.

[0029] A pressure ring 14 is fixedly provided on the bottom surface of the upper acquisition head 4, and the pressure ring 14 abuts against the top surface of the mounting ring 12.

[0030] Each of the multiple sets of fixed plates 5 has an insertion hole 15 on its outer wall, and the insertion hole 15 is provided with multiple sets of insertion rods 6 respectively.

[0031] The outer wall of the fixed sleeve 7 is provided with a sliding groove 16, and multiple sets of sliding grooves 16 are provided and slidably connected with a sliding sleeve 17. An unlocking sleeve 18 is fixedly provided on the inner side of the sliding sleeve 17.

[0032] A limiting sleeve 19 is fixedly provided on the top surface of the sliding sleeve 17. An arc-shaped rod 20 is fixedly provided on the outer wall of the limiting sleeve 19. Multiple sets of arc-shaped rods 20 are provided. A rotating sleeve 21 is rotatably provided on the outer wall of the fixed sleeve 7. A limiting rod 22 is fixedly provided on the outer wall of the rotating sleeve 21. Multiple sets of limiting rods 22 are provided, and each of them has a limiting hole 23 on its outer wall. Multiple sets of limiting holes 23 are respectively inserted into multiple sets of arc-shaped rods 20.

[0033] A positioning sleeve 24 is fixedly provided on the top surface of the rotating sleeve 21. The inner wall of the positioning sleeve 24 is provided with a movable groove 25. Multiple sets of movable grooves 25 are provided, and positioning blocks 26 are slidably connected to the inner side of each set. The outer wall of the fixed sleeve 7 is provided with a positioning groove 27. Multiple sets of positioning grooves 27 are provided and abut against multiple sets of positioning blocks 26 respectively. A return spring 28 is connected between the top of each set of positioning blocks 26 and the movable groove 25.

[0034] A compression spring 29 is connected to the bottom surface of the rotating sleeve 21, and a thrust bearing 30 is connected between the bottom end of the compression spring 29 and the limiting sleeve 19.

[0035] A compression spring 31 is connected to the inner wall of the fixed sleeve 7. A push block 32 is fixed at the bottom of the compression spring 31, and a sliding hole 33 is opened at the top of the insertion rod 6.

[0036] In this embodiment, when the filter membrane 13 needs to be installed, the mounting ring 12 is abutted against the top surface of the lower collection head 3, the fixing plate 5 set on the outside of the upper collection head 4 is abutted against the lower collection head 3 and the multiple sets of insertion holes 15 are aligned, so that the pressure ring 14 abuts against the top surface of the mounting ring 12, the insertion rod 6 is inserted into the insertion hole 15 and then inserted into the fixing sleeve 7. The insertion rod 6 pushes the multiple sets of locking blocks 9 to rotate, making room for the insertion rod 6 and squeezing the multiple sets of push springs 10. Then the multiple sets of push springs 10 reset and push the locking blocks 9 to engage in the slot 11, engaging the insertion rod 6, completing the connection and fixing of the fixing plate 5, thereby completing the installation of the filter membrane 13.

[0037] More specifically, when the filter membrane 13 needs to be disassembled, rotating the rotating sleeve 21 causes multiple sets of arc-shaped rods 20 to disengage from the limiting hole 23, releasing the limiting of the sliding sleeve 17. Pushing the sliding sleeve 17 drives the unlocking sleeve 18 to push multiple sets of locking blocks 9 out of the slot 11. Then, the insertion rod 6 is pulled out of the fixing sleeve 7 and the insertion hole 15, and the upper collection head 4 is removed, so that the filter membrane 13 can be disassembled. When rotating the rotating sleeve 21, it drives the positioning sleeve 24 to rotate. Multiple sets of positioning grooves 27 push the positioning block 26 to squeeze the reset spring 28, so that the multiple sets of positioning blocks 26 move along the multiple sets of positioning grooves 27. When the rotating sleeve 21 stops rotating, the multiple sets of reset springs 28 push the positioning block 26 to abut in the positioning groove 27 to position the rotating sleeve 21.

[0038] In summary, when the entire device is in use or operation: when the filter membrane 13 needs to be installed, the mounting ring 12 is placed against the top surface of the lower collection head 3, the fixing plate 5 set on the outside of the upper collection head 4 is placed against the lower collection head 3 and the multiple sets of insertion holes 15 are aligned, so that the pressure ring 14 is placed against the top surface of the mounting ring 12. The insertion rod 6 is inserted into the insertion hole 15 and then inserted into the fixing sleeve 7. The insertion rod 6 pushes the multiple sets of locking blocks 9 to rotate, making room for the insertion rod 6 and squeezing the multiple sets of push springs 10. Then the multiple sets of push springs 10 reset and push the locking blocks 9 to engage in the slot 11, engaging the insertion rod 6, completing the connection and fixation of the fixing plate 5, thereby completing the installation of the filter membrane 13.

[0039] When the filter membrane 13 needs to be disassembled, rotating the rotating sleeve 21 causes multiple sets of arc-shaped rods 20 to disengage from the limiting hole 23, releasing the limiting of the sliding sleeve 17. Pushing the sliding sleeve 17 drives the unlocking sleeve 18 to push multiple sets of locking blocks 9 out of the slot 11. Then, the insertion rod 6 is pulled out from the fixing sleeve 7 and the insertion hole 15, and the upper collection head 4 is removed, so that the filter membrane 13 can be disassembled. When rotating the rotating sleeve 21, the positioning sleeve 24 is rotated. Multiple sets of positioning grooves 27 push the positioning block 26 to squeeze the reset spring 28, so that the multiple sets of positioning blocks 26 move along the multiple sets of positioning grooves 27. When the rotating sleeve 21 stops rotating, the multiple sets of reset springs 28 push the positioning block 26 to abut in the positioning groove 27 to position the rotating sleeve 21.

[0040] Of all the solutions mentioned above, those involving connections between two components can be selected based on the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other well-known connection methods. These will not be elaborated on here. For all the fixed connections mentioned above, welding is the preferred option.

[0041] In all the solutions mentioned above, the operation of electrical components, unless otherwise specified, is controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and wiring connections are existing, well-known, and mature technologies, and their specific circuit structures will not be described in detail here. The specific models and specifications of the electrical components involved in this solution need to be selected and determined according to the actual specifications of the device. The specific selection and calculation methods adopt existing technologies in this field, and therefore will not be described in detail.

[0042] Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies and will not be described in detail in this utility model.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An air sampler for exhaust gas detection, comprising a sampler body (1), characterized in that: The sampler body (1) is connected to a connecting pipe (2) on its top surface. A lower sampling head (3) is fixedly provided at the top of the connecting pipe (2). An upper sampling head (4) is provided on the top surface of the lower sampling head (3). A fixing plate (5) is fixedly provided on the outer wall of both the upper sampling head (4) and the lower sampling head (3). Multiple fixing mechanisms are provided on the outer side of multiple sets of fixing plates (5). The fixing mechanism includes a rod (6) and a fixing sleeve (7). The rod (6) is inserted into multiple sets of fixing plates (5) and is inserted into the fixing sleeve (7). An installation groove (8) is provided on the inner wall of the fixing sleeve (7). Multiple sets of installation grooves (8) are provided, and a locking block (9) is rotatably provided on the inner side of each set. A push spring (10) is connected between the outer wall of the multiple sets of locking blocks (9) and the installation groove (8). Multiple sets of push springs (10) are provided. A slot (11) is provided on the outer wall of the rod (6). An installation ring (12) is provided inside the lower sampling head (3). A filter membrane (13) is installed on the inner side of the installation ring (12).

2. An air sampler for exhaust gas detection according to claim 1, characterized in that: The bottom surface of the upper acquisition head (4) is fixedly provided with a pressure ring (14), and the pressure ring (14) abuts against the top surface of the mounting ring (12).

3. An air sampler for exhaust gas detection according to claim 2, characterized in that: multiple sets The outer wall of the fixed plate (5) is provided with insertion holes (15), and the insertion holes (15) are provided with multiple sets that are respectively connected to multiple sets of insertion rods (6).

4. An air sampler for exhaust gas detection according to claim 3, characterized in that: The outer wall of the fixed sleeve (7) is provided with a sliding groove (16), and the sliding groove (16) is provided with multiple sets and is slidably connected with a sliding sleeve (17). The inner side of the sliding sleeve (17) is fixedly provided with an unlocking sleeve (18).

5. An air sampler for exhaust gas detection according to claim 4, characterized in that: A limiting sleeve (19) is fixedly provided on the top surface of the sliding sleeve (17). An arc-shaped rod (20) is fixedly provided on the outer wall of the limiting sleeve (19). There are multiple sets of the arc-shaped rod (20). A rotating sleeve (21) is rotatably provided on the outer wall of the fixed sleeve (7). A limiting rod (22) is fixedly provided on the outer wall of the rotating sleeve (21). There are multiple sets of the limiting rod (22), and each of them has a limiting hole (23) on its outer wall. The multiple sets of limiting holes (23) are respectively inserted into the multiple sets of arc-shaped rods (20).

6. An air sampler for exhaust gas detection according to claim 5, characterized in that: A positioning sleeve (24) is fixedly provided on the top surface of the rotating sleeve (21). A movable groove (25) is provided on the inner wall of the positioning sleeve (24). Multiple sets of the movable groove (25) are provided, and positioning blocks (26) are slidably connected on the inner side of each set. A positioning groove (27) is provided on the outer wall of the fixed sleeve (7). Multiple sets of the positioning groove (27) are provided and abut against multiple sets of positioning blocks (26) respectively. A return spring (28) is connected between the top of each set of positioning blocks (26) and the movable groove (25).

7. An air sampler for exhaust gas detection according to claim 6, characterized in that: A compression spring (29) is connected to the bottom surface of the rotating sleeve (21), and a thrust bearing (30) is connected between the bottom end of the compression spring (29) and the limiting sleeve (19).

8. An air sampler for exhaust gas detection according to claim 7, characterized in that: A compression spring (31) is connected to the inner wall of the fixed sleeve (7), and a push block (32) is fixed at the bottom of the compression spring (31). A sliding hole (33) is opened at the top of the insertion rod (6).

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