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Multi-channel air particulate matter sampler shunting device and sampler equipped with same

A technology of air particulate matter and diversion device, which is applied in the direction of sampling device, etc., and can solve problems such as error and retained particle sampling

Inactive Publication Date: 2015-11-25
QINGDAO & CHENG ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the technical problem that existing multi-channel air particle sampler splitters have dead space volume, which will cause sampling errors due to trapped particles, and proposes a method that does not have dead space volume and can be collected simultaneously under the same air source and power. A multi-channel air particle sampler split device with multiple parallel samples and high sampling accuracy

Method used

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  • Multi-channel air particulate matter sampler shunting device and sampler equipped with same
  • Multi-channel air particulate matter sampler shunting device and sampler equipped with same
  • Multi-channel air particulate matter sampler shunting device and sampler equipped with same

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Embodiment one: if figure 1 , figure 2 As shown, a multi-channel air particle sampler flow diversion device includes an upper end cover 1 and a lower end cover 2, the top end of the upper end cover 1 is provided with an air inlet 3, and the lower end cover 2 includes a cylindrical cylinder 21 and a cylinder located on the cylinder. Flange 22 below 21. Six conical grooves 211 are evenly distributed on the upper surface of the cylinder 21 around the central axis, and the conical surfaces of the conical grooves 211 intersect at one point to form a shunt 213 with a sharp top at the center of the cylinder. The rubber parts of all the tapered grooves 211 form a quincunx groove, which serves as a common inlet for airflow to enter each air path. The bottom of the tapered groove 211 has an air outlet 4, the upper and lower end caps 2 are fastened together, the inner wall of the upper end cap 1 is closely attached to the outer wall of the cylinder 21, and the space between the...

Embodiment 2

[0031] Embodiment two: if Figure 7 and Figure 8 As shown, the difference between this embodiment and Embodiment 1 is that the conical surfaces of the tapered grooves 211 do not intersect at one point, but a central platform is formed at the center of the cylinder 21, and the central platform is further cut into a conical shape. , that is, a tip-shaped split body 213 is obtained.

Embodiment 3

[0032] Embodiment three: as Figure 9 and Figure 10 As shown, a multi-channel air particle sampler flow diversion device includes an upper end cover 1 and a lower end cover 2, the top end of the upper end cover 1 is provided with an air inlet 3, and the lower end cover 2 includes a cylindrical cylinder 21 and a cylinder located on the cylinder. Flange 22 below 21. The cylinder 21 has six tapered grooves 211 evenly distributed around the central axis, and the conical surfaces of the tapered grooves 211 intersect at one point. The bottom of the tapered groove 211 has an air outlet 4, the upper and lower end caps 2 are fastened together, the inner wall of the upper end cap 1 is closely attached to the outer wall of the cylinder 21, and the space between the upper and lower end caps 2 is sealed to form a distribution chamber. The flange 22 is provided with a threaded hole, and the lower end of the side wall of the upper end cover 1 is provided with a threaded groove correspondi...

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Abstract

The invention discloses a multi-channel air particulate matter sampler shunting device. The shunting device comprises an upper end cover and a lower end cover, wherein an airflow inlet is formed in the top end of the upper end cover; the lower end cover comprises a cylinder and a flange located under the cylinder; six conical grooves are uniformly formed in the upper surface of the cylinder around a center axis; side walls of the conical grooves are interested in the center of the cylinder to form a shunting body with a spire structure; airflow outlets are formed in the bottom of the conical grooves; the upper end cover and the lower end cover are buckled to form a shunting cavity. According to the shunting device, air sucked from the same airflow inlet is divided into six parts, the six air paths are symmetrically distributed, taken samples are completely parallel, and multiple parallel samples can be collected simultaneously under the condition of the same air source and the same power. The whole shunting cavity is not provided with a platform, so that dead space volume is avoided, and the problem that the sampling accuracy is influenced due to the fact that the airflow is directly intercepted by the platform is effectively solved.

Description

technical field [0001] The invention belongs to the field of air particle samplers, in particular to a multi-channel air particle sampler diverter device and a sampler equipped with the device. Background technique [0002] With the frequent occurrence of dust storms and smog weather, the air pollution problem has attracted more and more people's attention. The detection of air quality is also particularly important. The monitoring, analysis and research of particulate matter in the air is the focus of current environmental protection work. The monitoring scope of air particulate matter mainly includes total suspended particulate matter TSP, inhalable particulate matter PM10 and fine particulate matter PM2.5. In order to analyze the composition of different particulate matter, parallel sampling of particulate matter in the ambient air at the same time period and at the same location is required. Using multiple samplers to achieve parallel sampling not only increases the wo...

Claims

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Application Information

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IPC IPC(8): G01N1/22
Inventor 付寅姜晔张忠民
Owner QINGDAO & CHENG ENVIRONMENTAL PROTECTION TECH
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