PM (Particulate Matter) 2.5 particle size cutting device

A cutting device and particle technology, applied in the direction of sampling devices, etc., can solve the problems of difficult particle size cutting, inability to use alone, unfavorable maintenance, etc., and achieve the effect of compact structure, high cutting efficiency, and convenient later maintenance

Inactive Publication Date: 2013-04-03
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the patent ZL201220149409.6, a cyclone separator-based particle PM 2.5 Particle size cutter, which can be used for particle size cutting for the purpose of ambient air sampling or measurement, but it is only used as PM 10 The particle size cutter is used as an accessory and cannot be used alone
At the same time, the structure of the cutter adopts the horizontal separation mode of the separation chamber, which is difficult to ensure accurate particle size cutting under high particle concentration for a long time, and the inside of the separation chamber is easily polluted by particle deposition, which is not conducive to later maintenance

Method used

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  • PM (Particulate Matter) 2.5 particle size cutting device
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  • PM (Particulate Matter) 2.5 particle size cutting device

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Embodiment Construction

[0026] Such as figure 1 , 2 As shown, an embodiment of the present invention includes: a sample gas inlet pipe 1 , a cyclone separator 2 , a particle collection chamber 3 , an adapter 4 and a sample gas outlet pipe 5 . One end of the sample gas inlet pipe 1 is used as the inlet port to open downward, and the other end is screwed to the inlet 6 of the cyclone separator 2, and the connection is sealed with an O-ring; the sample gas outlet pipe 1 is in an inverted U-shaped structure , one end is connected to the adapter 4 through threads, and the connection is sealed with an O-ring, and the other end is connected to the follow-up particle analyzer; 7 is connected at the bottom, and the connection is sealed by an O-ring; the upper end of the air outlet 8 of the cyclone separator 2 is connected with the adapter 4 through threads, and the connection is sealed by an O-ring. The cyclone separator 2, the adapter 4 and the particle collection chamber 3 are coaxially installed, and O-...

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Abstract

The invention discloses a PM (Particulate Matter) 2.5 particle size cutting device, which can effectively cut particle matters with a particle size of more than 2.5 microns by utilizing the aerodynamics property of the particle matters. The PM 2.5 particle size cutting device comprises an air sample inlet pipe, a cyclone separator, an adaptor and an air sample outlet pipe, wherein the cyclone separator is formed by an air inlet, a separation cavity, an air outlet and a particulate matter collection chamber. The PM 2.5 particle size cutting device is compact in structure and convenient to use, can efficiently cut the particulate matters with the particle size of more than 2.5 microns under the condition of a constant flow rate, and can be suitable for preceding stage particulate size cutting of environment monitoring equipment.

Description

technical field [0001] The invention relates to a particulate matter PM 2.5 A particle size cutting device belongs to the technical field of atmospheric aerosol monitoring. Background technique [0002] While the country's industrialization process is accelerating, ambient air pollution is becoming more and more serious. my country has changed from typical soot-type air pollution to composite pollution mainly characterized by ozone and atmospheric fine particles. Especially with the implementation of the country's new "Ambient Air Quality Standards", PM 2.5 Mass concentration measurement is officially included in the scope of environmental control quality monitoring. At present, the instrument that can really realize the in-situ measurement of the mass concentration of particulate matter in ambient air is based on the oscillatory balance method, while PM 2.5 The research and development of particle size cutting device will be of great significance for the accurate measure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/22
Inventor 王杰刘建国陆亦怀桂华侨王亚萍陈军陆钒
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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