APPARATUS FOR SAMPLING AND FEEDING SAMPLES Russian patent published in 2001 - IPC

FIELD: analytical instrument making, possibly sampling compressed gases, air, any other medium of environment. SUBSTANCE: apparatus is the form of cylindrical casing with cavity, inlet and outlet openings and it has locking unit and sealing member. There is starting cone in inlet and outlet openings of cylindrical casing. Locking unit is in the form of cylindrical lock. Sealing member is in the form of ring whose outer diameter is equal to outer diameter of starting cone of casing exceeding inner diameter of cylindrical cavity of casing pressed onto inlet cylindrical portion of lock. Sealing member is placed between inner surface of cylindrical portion of casing and outer cylindrical surface of lock. The last is forced by means of captive nut. In order to keep fluid-tight fit of lock, cylindrical casing cavity with sorbent is limited by means of filters and sleeves with radial slit. Diameter of sleeves with radial slit along outer diameter exceeds outer diameter of starting cone of inlet opening of casing by value of cut-off chord. Sleeves are made of the same material as sealing member, said material is resistant against active biological and aggressive media and it has small friction factor. Apparatus provides fluid-tightness for short-period temperature raising from 80C to 200C at applying vibration and shock loads up to 40g. EFFECT: enhanced resistance against aggressive, oil and petroleum vapor containing gaseous media. 2 cl, 3 dwg