Odor sniffing device and vehicle-mounted security inspection apparatus for container

An odor sniffing device, configured to perform an inspection by sniffing gas and/or particulate matter in an inspected object, and the odor sniffing device comprising:

• a primary sampling front end (116) configured to be accessible to a ventilator of a container and provide a suction force, so that the primary sampling front end collects gas and/or particles inside the container;
• wherein the primary sampling front end (116) has a vent adapter having a shape matching with a vent of the ventilator of the container, so that when the primary sampling front end fits with the ventilator, the vent adapter and the vent cooperate to achieve fluid communication,
• wherein the odor sniffing device comprises:
• a cyclone concentration sampler (115) defining a cyclone chamber and comprising opposing first and second ends;
• and a primary sampling pipeline (117) being at least in fluid communication with the primary sampling front end (116) and the cyclone concentration sampler (115), the cyclone chamber of the cyclone concentration sampler (115) has a substantially tapered three-dimensional shape, the cyclone chamber has a first tapered part (115-1) close to the first end and a second tapered part (115-II) close to the second end, and in a cross section along an axis of the cyclone concentration sampler (115), an angle (a) between side walls (115-c, 115-d) on two sides of the second tapered part (115-II) is greater than an angle (B) between side walls (115-a, 115-b) on two sides of the first tapered part (115-1);
• and
• wherein the cyclone concentration sampler comprises:
• a first inlet (115-1) of the cyclone chamber at an end face of the first end, configured to be in fluid communication with the primary sampling front end (116) through a portion of the primary sampling pipeline (117), and to introduce the gas and/or particulate matter collected by the primary sampling front end into the cyclone chamber, wherein the gas discharged from the first inlet (115-1) of the cyclone chamber is enabled for forming a cyclone airflow flowing from the first end to the second end in the cyclone chamber;
• a first outlet (115-2) of the cyclone chamber at the second end configured to allow at least a portion of the gas and/or particulate matter in the cyclone chamber to be discharged from the first outlet of the cyclone chamber;
• and a sample gas outlet (115-4) of the cyclone chamber located on a side wall near the second end, configured to allow at least a portion of the sample gas to be discharged from the sample gas outlet of the cyclone chamber, wherein the sample gas outlet (115-4) of the cyclone chamber is closer to the first end than the first outlet (115-2) of the cyclone chamber.