A sampling device for detecting particulate matter in exhaust gas

Abstract

This utility model discloses a sampling device for detecting particulate matter in exhaust gas, including a mounting shell, an exhaust fan, a sampling tube, and a push-pull component. A rotating seat is rotatably mounted inside the mounting shell, and multiple placement slots are provided on the rotating seat. An installation slot is provided on one side of the mounting shell, and a connecting pipe is installed inside the installation slot. A connecting assembly is provided on one side of the sampling tube. The connecting assembly includes a second connecting port. A hexagonal tube is provided on one side inside the sampling tube, and a spring is provided on the outside of the hexagonal tube. A hexagonal rod is slidably mounted inside the hexagonal tube, and a baffle is provided on the spring. This utility model allows air to be drawn into the sampling tube by the exhaust fan. After sampling, the air is extracted. The spring pushes the baffle, causing the second sealing ring to adhere to the inside of the second connecting port. Therefore, by continuously rotating the rotating seat and pushing and pulling the push-pull component, air can be delivered to multiple sampling tubes, thereby completing the sampling process and effectively accelerating the sampling speed.

Description

Technical Field

[0001] This utility model relates to the field of particulate matter detection technology in exhaust gas, specifically a sampling device for detecting particulate matter in exhaust gas. Background Technology

[0002] Particulate matter detection in exhaust gas is the process of monitoring relevant indicators of particulate matter in exhaust gas. It is used to assess the impact of exhaust gas on the environment and health, and to determine whether emissions meet standards. Through specific methods and equipment, the concentration, particle size, composition, etc. of particulate matter are measured and analyzed. Currently, when sampling for particulate matter detection in exhaust gas, a structure of an air extraction device and a sampling tube is usually used. In scenarios such as particulate matter detection sampling in exhaust gas, the air extraction device (such as a sampling pump) provides power to allow the exhaust gas to flow in the sampling tube, so that the exhaust gas can smoothly enter the sampling tube, thereby achieving the collection of gas and particulate matter in it.

[0003] However, currently, when multiple exhaust gas tubes need to be sampled, after one tube of exhaust gas is sampled, the staff needs to disconnect the connection between the sampling tube and the extraction device before connecting the other sampling tubes. The current connection methods usually use threaded or bayonet connections. Since each sampling tube needs to be connected, sampled, and disassembled in sequence, the process is cumbersome and consumes a lot of time and energy. Especially when a large number of samples need to be collected, it will seriously reduce the sampling efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a sampling device for detecting particulate matter in exhaust gas, so as to solve the problem mentioned in the background art that the sampling efficiency will be severely reduced when a large number of samples need to be collected.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A sampling device for detecting particulate matter in exhaust gas includes a mounting shell, an exhaust fan, a sampling tube, and a push-pull component. A rotating seat is rotatably arranged inside the mounting shell, and multiple placement slots are provided on the rotating seat. An installation slot is provided on one side of the mounting shell, and a connecting tube is provided inside the installation slot. A connecting component is provided on one side of the sampling tube.

[0007] The connecting assembly includes a second connecting port, a hexagonal tube is provided on one side inside the sampling tube, a spring is provided on the outside of the hexagonal tube, a hexagonal rod is slidably provided inside the hexagonal tube, and a baffle is provided on the spring.

[0008] In a preferred embodiment of this utility model, the sampling tube is disassembled and assembled on the placement groove, and a threaded cap is provided on the top of the sampling tube, which is threadedly connected to the top of the sampling tube.

[0009] In a preferred embodiment of this utility model, a first sealing ring is provided at the bottom of the threaded cover, and an exhaust port is provided at the top of the threaded cover.

[0010] In a preferred embodiment of this utility model, a hexagonal rod is provided on one side of the baffle, and the hexagonal rod is slidably connected to the hexagonal tube. A second sealing ring is provided on the other side of the baffle, and the second sealing ring is attached to the inside of the second connection port.

[0011] In a preferred embodiment of the present invention, a first connection port is provided on the outside of the placement groove, a second connection port is connected to the first connection port, and the first connection port is connected to the inside of the mounting groove.

[0012] In a preferred embodiment of this utility model, a flexible hose is provided at the air outlet of the exhaust fan, the flexible hose is connected to the outside of the connecting pipe, an air outlet is provided on the inside of the connecting pipe, and the inside of the connecting pipe is in contact with a baffle.

[0013] In a preferred embodiment of the present invention, the connecting pipe is provided with an annular component, the annular component slides inside the mounting groove, the annular component is rotatably connected to the inner side of the push-pull component, and the connecting pipe passes through the inside of the push-pull component, while the outer side of the push-pull component is located outside the mounting groove.

[0014] In a preferred embodiment of this utility model, a slide rail is provided above the push-pull member, and a locking block is provided above the inner outer side of the mounting groove. The slide rail and the locking block are slidably connected. Retaining rings are provided on both sides of the slide rail, and the retaining rings are detached from the locking block.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0016] Beneficial effects: By rotating the rotating seat, the first connecting port aligns with the inner side of the mounting groove. By pressing the push-pull component on the outside, the connecting tube moves inward. At this time, the inner side of the connecting tube passes through the first and second connecting ports, thus contacting the baffle and squeezing the baffle, allowing air to enter the sampling tube through the outlet. Then, by using an exhaust fan to extract air, other air can enter the sampling tube. After sampling, the tube is pulled out. By pushing the baffle with a spring, the second sealing ring is attached to the inner side of the second connecting port, thus achieving a sealing effect inside the sampling tube. In other words, by simply continuously rotating the rotating seat and pushing and pulling the push-pull component, air can be delivered to multiple sampling tubes to complete the sampling, thus effectively speeding up the sampling process.

[0017] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the main structure of a sampling device for detecting particulate matter in exhaust gas.

[0020] Figure 2 This is a schematic diagram of the exploded structure in a sampling device for detecting particulate matter in exhaust gas.

[0021] Figure 3 This is a schematic diagram of the internal structure of the sampling tube in a sampling device for detecting particulate matter in exhaust gas.

[0022] Figure 4 This is a schematic diagram of the mounting slot structure in a sampling device for detecting particulate matter in exhaust gas.

[0023] Figure 5 This is a schematic diagram of the connection structure between the connecting pipe and the push-pull component in a sampling device for detecting particulate matter in exhaust gas.

[0024] In the diagram: 1. Mounting shell; 11. Rotating seat; 12. Placement slot; 13. Mounting slot; 14. First connection port; 15. Locking block; 2. Exhaust fan; 21. Hose; 22. Connecting pipe; 23. Air outlet; 24. Ring component; 25. Push-pull component; 3. Sampling tube; 31. Threaded cap; 32. Exhaust port; 33. First sealing ring; 34. Second connection port; 4. Hexagonal tube; 41. Hexagonal rod; 42. Spring; 43. Baffle; 44. Second sealing ring; 5. Slide rail; 51. Snap ring. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] Please refer to Figures 1-5This utility model discloses a sampling device for detecting particulate matter in exhaust gas, comprising a mounting shell 1, an exhaust fan 2, a sampling tube 3, and a push-pull component 25. The mounting shell 1 is an outer structure used to protect the overall structure. The exhaust fan 2 is the exhaust structure. The sampling tube 3 is used to store the sampled exhaust gas. The push-pull component 25 is the mounting structure. A rotating seat 11 is rotatably mounted inside the mounting shell 1. The rotating seat 11 rotates inside the mounting shell 1 and can be disassembled and assembled. The rotating seat 11 is provided with multiple placement slots 12. The sampling tube 3 is disassembled and assembled in the placement slots 12, allowing multiple tubes to be installed simultaneously. A sampling tube 3 has a threaded cap 31 at its top, which is threadedly connected to the top of the sampling tube 3. A first sealing ring 33 is provided at the bottom of the threaded cap 31. The top of the sampling tube 3 is opened and closed by the threaded cap 31, and the bottom of the first sealing ring 33 is attached to the bottom of the external thread of the sampling tube 3, thereby achieving a good sealing effect. An exhaust port 32 is provided at the top of the threaded cap 31. The exhaust port 32 is opened and closed by an airtight valve. By opening the exhaust port 32, the gas inside the sampling tube 3 can be taken out, thereby detecting particulate matter in the gas.

[0027] A connecting assembly is provided on one side of the sampling tube 3. The connecting assembly includes a second connecting port 34. A first connecting port 14 is provided on the outside of the placement groove 12. When the sampling tube 3 is installed in the placement groove 12, the second connecting port 34 is connected to the first connecting port 14. A hexagonal tube 4 is provided on one side of the inside of the sampling tube 3. A spring 42 is provided on the outside of the hexagonal tube 4. A hexagonal rod 41 is slidably provided inside the hexagonal tube 4. A baffle 43 is provided on the spring 42. A hexagonal rod 41 is provided on one side of the baffle 43. The hexagonal rod 41 is slidably connected to the hexagonal tube 4, so that the baffle 43 is slidably installed. A second sealing ring 44 is provided on the other side of the baffle 43. The second sealing ring 44 is attached to the inside of the second connecting port 34. That is, the spring 42 pushes the baffle 43, so that the second sealing ring 44 is attached to the inside of the second connecting port 34, thereby achieving a sealing effect on the inside of the sampling tube 3.

[0028] A mounting groove 13 is provided on one side of the mounting shell 1. The mounting groove 13 is a mounting structure. By rotating the rotating seat 11, the first connecting port 14 is aligned with the inner side of the mounting groove 13. A connecting pipe 22 is provided inside the mounting groove 13. A flexible hose 21 is provided at the air outlet of the exhaust fan 2. The flexible hose 21 is connected to the outside of the connecting pipe 22. The connecting pipe 22 and the flexible hose 21 are gas delivery pipes. An air outlet 23 is provided on the inner side of the connecting pipe 22. The inner side of the connecting pipe 22 is in contact with the baffle 43. That is, by pressing the push-pull piece 25 on the outside, the connecting pipe 22 is moved inward. At this time, the inner side of the connecting pipe 22 passes through the first connecting port 14 and the second connecting port 34, thereby contacting the baffle 43 and squeezing the baffle 43, so that the air outlet 23 enters the sampling tube 3. At this time, the exhaust fan 2 is used to extract air, so that other gases can enter the sampling tube 3.

[0029] A ring-shaped component 24 is provided on the connecting pipe 22. The ring-shaped component 24 slides inside the mounting groove 13. The ring-shaped component 24 is rotatably connected to the inner side of the push-pull component 25, that is, the inner side of the push-pull component 25 is stuck in the ring-shaped component 24 and rotates. The connecting pipe 22 passes through the inside of the push-pull component 25, and the outer side of the push-pull component 25 is outside the mounting groove 13. A slide rail 5 is provided above the push-pull component 25. A locking block 15 is provided above the inner outer side of the mounting groove 13. The slide rail 5 is slidably connected to the locking block 15. A retaining ring 51 is provided on the side. The retaining ring 51 is installed and removed from the retaining block 15. When the sampling tube 3 is inserted into the inner side of the connecting tube 22, the outer retaining ring 51 is on the retaining block 15. That is, by rotating the push-pull member 25, the retaining ring 51 is locked in the retaining block 15, thus fixing the position of the connecting tube 22 and the push-pull member 25. When removing it, the push-pull member 25 is rotated so that the slide rail 5 aligns with the retaining block 15, and the connecting tube 22 can be pulled out. The inner retaining ring 51 can also be locked in the retaining block 15, which facilitates the rotation of the rotating seat 11.

[0030] The working principle of this utility model is as follows: the top of the sampling tube 3 is opened and closed by the threaded cap 31, and the bottom of the first sealing ring 33 is attached to the bottom of the external thread of the sampling tube 3, thereby achieving a good sealing effect. By opening the exhaust port 32, the gas inside the sampling tube 3 can be taken out, thereby detecting particulate matter in the gas. By rotating the rotating seat 11, the first connecting port 14 is aligned with the inner side of the mounting groove 13. That is, by pressing the push-pull member 25 on the outside, the connecting tube 22 is moved inward. At this time, the inner side of the connecting tube 22 passes through the first connecting port 14 and the second connecting port. 34, thus contacting the baffle 43 and squeezing the baffle 43, so that the air outlet 23 enters the sampling tube 3. At this time, the exhaust fan 2 is used to extract air, so that other air can enter the sampling tube 3. After sampling is completed, the air outlet 23 is pulled out. The baffle 43 is pushed by the spring 42, so that the second sealing ring 44 is attached to the inside of the second connection port 34, thereby achieving a sealing effect on the inside of the sampling tube 3. That is, only by continuously rotating the rotating seat 11 and pushing and pulling the push-pull part 25, air can be delivered to multiple sampling tubes 3, thereby completing the sampling and effectively speeding up the sampling speed.

[0031] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A sampling device for detecting particulate matter in exhaust gas, characterized in that: The assembly includes a mounting shell (1), an exhaust fan (2), a sampling tube (3), and a push-pull component (25). The mounting shell (1) has a rotating seat (11) inside, and the rotating seat (11) has multiple placement slots (12). The mounting shell (1) has a mounting slot (13) on one side, and the mounting slot (13) has a connecting pipe (22) inside. The sampling tube (3) has a connecting component on one side. The connecting assembly includes a second connecting port (34), a hexagonal tube (4) is provided on one side inside the sampling tube (3), a spring (42) is provided on the outside of the hexagonal tube (4), a hexagonal rod (41) is slidably provided inside the hexagonal tube (4), and a baffle (43) is provided on the spring (42).

2. The sampling device for detecting particulate matter in exhaust gas according to claim 1, characterized in that, The sampling tube (3) is installed and removed on the placement groove (12). The top of the sampling tube (3) is provided with a threaded cap (31), and the threaded cap (31) is threadedly connected to the top of the sampling tube (3).

3. A sampling device for detecting particulate matter in exhaust gas according to claim 2, characterized in that, The threaded cap (31) is provided with a first sealing ring (33) at the bottom and a vent (32) at the top.

4. A sampling device for detecting particulate matter in exhaust gas according to claim 1, characterized in that, A hexagonal rod (41) is provided on one side of the baffle (43), and the hexagonal rod (41) is slidably connected to the hexagonal tube (4). A second sealing ring (44) is provided on the other side of the baffle (43), and the second sealing ring (44) is attached to the inside of the second connection port (34).

5. A sampling device for detecting particulate matter in exhaust gas according to claim 1, characterized in that, The placement slot (12) is provided with a first connection port (14) on the outside, and the second connection port (34) is connected to the first connection port (14). The first connection port (14) is connected to the inside of the mounting slot (13).

6. A sampling device for detecting particulate matter in exhaust gas according to claim 1, characterized in that, The exhaust fan (2) is provided with a flexible hose (21) at the exhaust outlet. The flexible hose (21) is connected to the outside of the connecting pipe (22). An exhaust port (23) is provided on the inside of the connecting pipe (22). The inside of the connecting pipe (22) is in contact with the baffle (43).

7. A sampling device for detecting particulate matter in exhaust gas according to claim 1, characterized in that, The connecting pipe (22) is provided with an annular part (24), which slides inside the mounting groove (13). The annular part (24) is rotatably connected to the inner side of the push-pull part (25), and the connecting pipe (22) passes through the inside of the push-pull part (25). The outer side of the push-pull part (25) is outside the mounting groove (13).

8. A sampling device for detecting particulate matter in exhaust gas according to claim 1, characterized in that, A slide rail (5) is provided above the push-pull component (25), and a locking block (15) is provided above the inner outer side of the mounting groove (13). The slide rail (5) and the locking block (15) are slidably connected. A retaining ring (51) is provided on both sides of the slide rail (5). The retaining ring (51) is installed and removed from the locking block (15).

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