Patent ID: 9671320
Date: 2017-06-06
CPC Classifications: G01N

Claim:
1. A semi-dry type electrostatic cyclone sampler comprising: a cyclone body having an annular wall, a base connecting to a bottom end of the annular wall, at least one gas inlet, and at least one water outlet; an insulate element disposed at a top end of the annular wall co-defining a cyclone chamber with the annular wall and the base of the cyclone body; the gas inlet and the water outlet both communicating with the cyclone chamber; at least one discharge electrode disposed on the insulate element and extending into the cyclone chamber; the discharge electrode having a distal end lower than the gas inlet and higher than the water outlet; an air tube disposed at the base of the cyclone body defining a passage; a top end of the air tube being defined as a top opening communicating with the cyclone chamber and the passage; the top opening of the air tube being lower than the distal end of the discharge electrode and higher than the water outlet; an air introducing means for introducing a particulate-containing air stream into the cyclone chamber through the gas inlet in a way that the air stream spirally flows along the annular wall and generates an air sample which is expelled from the cyclone chamber through the passage; a discharging means for applying a high voltage power to the discharge electrode to charge at least a part of the particulates in a way that the charged particulates can attach on the annular wall; and a flushing means for introducing water into the cyclone chamber to flush the annular wall, collect at least a part of the particulates attached on the annular wall and thus form a particulates-containing water sample; wherein the water outlet is adapted for the particulates-containing water sample to leave the cyclone chamber; wherein, when the discharging means is activated, the air introducing means is activated simultaneously; when the flushing means is activated, the discharging means is deactivated.