Anti-clogging particulate matter sampler

Abstract

The utility model relates to a kind of anti-clogging particulate matter sampler, and it relates to particulate matter sampler technical field, solve the problem that existing technology exists that particulate matter is attached to the surface and internal pore of filter membrane, the channel of airflow passing is narrowed, causes airflow to be blocked.The sampler main body is sequentially connected with air inlet channel, particulate matter cutter and filter cavity on the sampler main body, filter membrane assembly is detachably installed in the filter cavity;Air outlet channel is connected in the sampler main body, the filter cavity is communicated with the air outlet channel, first pressure sensor, flow regulating valve and air pump are sequentially connected on the air outlet channel;Air agitation cavity is arranged between the filter cavity and the air outlet channel, stirring fan is installed in the air agitation cavity, multiple air holes are arranged between the filter cavity and the air agitation cavity.The beneficial effect is: it can be stirred particulate matter attached on filter membrane by changing the direction of airflow, avoid due to particulate matter accumulation.

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