A low-concentration particulate matter blank sampling device

Abstract

This utility model relates to a low-concentration particulate matter blank sampling device for use in the field of environmental monitoring technology. The device includes a low-concentration sample sampling head cover, a connecting rod, a low-concentration blank sampling head cover, and a pressure cap. By simultaneously fixing the low-concentration sample sampling head and the low-concentration blank sampling head, and ensuring that the two sampling heads are oriented in opposite directions, no airflow enters the blank sampling head during the sampling process, thereby obtaining a blank comparison sample for the entire sampling process. This utility model solves the problems of large size and heavy weight of traditional blank sampling devices, and has the advantages of simple installation and operation, small size, and lightweight, making it suitable for low-concentration particulate matter monitoring scenarios.

Description

Technical Field

[0001] This utility model relates to the field of environmental monitoring technology, and more specifically, to a low-concentration particulate matter blank sampling device. Background Technology

[0002] In the field of environmental monitoring technology, sampling of low-concentration particulate matter (such as PM2.5) from stationary pollution sources often involves blank sample testing to eliminate background interference. Traditional sampling devices have two major bottlenecks: First, blank sampling devices are large and cumbersome to install, increasing the overall volume of the sampling gun after installation, exceeding the opening width of most existing sampling holes, thus affecting on-site sampling. Second, the devices have complex structures and are relatively heavy, requiring multiple disassemblies and reassemblies for sampling, which is cumbersome and time-consuming. The sampling process also requires greater support for the sampling gun, affecting monitoring efficiency. Although some improved devices exist in the current technology, they still suffer from problems such as large size and heavy weight.

[0003] Currently, no effective solution has been proposed to address the aforementioned problems. Therefore, there is an urgent need for a simple and lightweight blank sampling device to improve the portability and ease of operation during the monitoring process. Utility Model Content

[0004] In view of the problems in the related technologies, this utility model proposes a low-concentration particulate matter blank sampling device to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] Therefore, the specific technical solution adopted by this utility model is as follows:

[0006] A low-concentration particulate matter blank sampling device includes a low-concentration sample sampling head cover, characterized in that: the low-concentration sample sampling head cover is connected to a low-concentration blank sampling head cover by a connecting rod to form an integral unit, the two ends of the connecting rod are fixed to the external structure of the low-concentration sample sampling head cover and the low-concentration blank sampling head cover, and the end of the low-concentration blank sampling head cover has a pressure cap.

[0007] As a further embodiment of this invention, the low-concentration sample sampling head cover has a fixing rod on its outer side.

[0008] As a further embodiment of this invention, the low-concentration blank sampling head cover has a pressure cap at its end.

[0009] As a further embodiment of this invention, the low-concentration sample sampling headgear and the low-concentration blank sampling headgear are fixedly connected by a connecting rod to form the same horizontal plane.

[0010] The beneficial effects of this utility model are as follows:

[0011] This invention directly connects and fixes the low-concentration sample sampling head cover to the low-concentration blank sampling head cover, and directly connects the sampling device to the sampling gun head, reducing the volume of the sampling device and sampling gun after installation. This ensures the sampling gun is compatible with all existing sampling opening sizes. The low-concentration blank sampling head is designed with a pressure cap, ensuring a sealed design (achieved by the low-concentration blank sampling head cover and pressure cap), preventing external contamination and improving data reliability. The direct connection and fixation between the low-concentration sample sampling head cover and the low-concentration blank sampling head cover reduces unnecessary fixing components, significantly reducing the overall weight of the blank sampling device and alleviating the burden on sampling personnel during prolonged sampling. It is suitable for various stationary pollution source low-concentration particulate matter monitoring scenarios, such as industrial emissions and atmospheric environmental monitoring, and has high practicality and promotional value. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of a low-concentration particulate matter blank sampling device according to an embodiment of the present utility model;

[0014] Figure 2 This is a schematic diagram of the installation structure of a low-concentration sample sampling head cover for a low-concentration particulate matter blank sampling device according to an embodiment of the present invention;

[0015] Figure 3 This is a schematic diagram of the overall structure of a low-concentration blank sampling head cover and pressure cap of a low-concentration particulate matter blank sampling device according to an embodiment of the present utility model.

[0016] In the picture:

[0017] 1. Low-concentration sample sampling head cover; 2. Connecting rod; 3. Low-concentration blank sampling head cover; 4. Pressure cap; 11. Sampling head fixing sleeve; 12. Sampling head connecting ring; 31. Sampling head fixing sleeve; 32. Sampling head connecting ring. Detailed Implementation

[0018] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0019] According to an embodiment of the present invention, a low-concentration particulate matter blank sampling device is provided.

[0020] Please refer to the instruction manual appendix. Figure 1-3 According to an embodiment of the present invention, a low-concentration particulate matter blank sampling device includes a low-concentration sample sampling head cover 1 connected to a low-concentration blank sampling head cover 3 via a connecting rod 2 to form an integral unit. The two ends of the connecting rod 2 are fixed to the external structures of the low-concentration sample sampling head cover 1 and the low-concentration blank sampling head cover 3, and the end of the low-concentration blank sampling head cover 3 has a pressure cap 4.

[0021] The low-concentration sample sampling head cover 1 is made of aluminum alloy and includes a sampling head fixing sleeve 11 and a sampling head connecting ring 12. The sampling head connecting ring 12 is fixed to one end of the connecting rod 3 by welding.

[0022] The connecting rod 3 is made of aluminum alloy, and its other end is fixed to the sampling head connecting ring 31 by welding. This ensures that the low-concentration sample sampling head cover 1 and the low-concentration blank sampling head cover 3 are connected together and kept on the same horizontal plane.

[0023] The low-concentration blank sampling head cover 3 is made of aluminum alloy and includes a sampling head fixing sleeve 31 and a sampling head connecting ring 32. Its end is connected to the pressure cap 4 to ensure the airtightness of the low-concentration sampling head.

[0024] Workflow: Insert the low-concentration sampling head into the low-concentration blank sampling head sleeve 3, fix the low-concentration sampling head with the sampling head fixing sleeve 31, connect the pressure cap 4 to the sampling head connecting ring 32, insert the low-concentration sampling head into the low-concentration sample sampling head sleeve 1, fix the low-concentration sampling head with the sampling head fixing sleeve 11, at this time adjust the low-concentration sampling head installed on the low-concentration sample sampling head sleeve 1 so that its direction is opposite to that of the sampling head installed on the low-concentration blank sampling head sleeve 3, and finally install the low-concentration sample sampling head sleeve 1 with the low-concentration sampling head onto the sampling gun.

[0025] When the sampling gun is turned on, the low-concentration sampling head installed on the low-concentration sample sampling head cover 1 draws in the flue gas through the sampling gun and collects particulate matter in the flue gas. At this time, the low-concentration sampling head installed on the low-concentration blank sampling head cover 3 is sealed by the cover plate 4 and the sampling head is in the opposite direction to the collection direction, thus ensuring that particulate matter in the flue gas will not enter it.

[0026] After sampling is complete, the user simply needs to reverse the installation process to remove the sampling head. The entire process ensures that the blank sample is not contaminated and maintains operational efficiency.

[0027] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A low concentration particulate matter blank sampling device comprising a low concentration sample sampling head cover (1), characterized in that: The low-concentration sample sampling headgear (1) is connected to the low-concentration blank sampling headgear (3) via a connecting rod (2) to form an integral unit. The two ends of the connecting rod (2) are fixed to the external structure of the low-concentration sample sampling headgear (1) and the low-concentration blank sampling headgear (3). The end of the low-concentration blank sampling headgear (3) has a pressure cap (4).

2. The low concentration particulate matter blank sampling device of claim 1, wherein: The low-concentration sample sampling headgear (1) has a fixing rod (2) on the outside.

3. The low concentration particulate matter blank sampling device of claim 1, wherein: The low-concentration blank sampling head cover (3) has a pressure cap (4) at the end.

4. The low concentration particulate matter blank sampling device of claim 1, wherein: The low-concentration sample sampling headgear (1) and the low-concentration blank sampling headgear (3) are fixedly connected by a connecting rod (2) to form the same horizontal plane.

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