DEVICE FOR PREPARING SAMPLES FOR CHEMICAL ANALYSIS Russian patent published in 1994 - IPC

FIELD: laboratory equipment. SUBSTANCE: device has metal casing and cover with flat flanges provided with diametrically opposed cylindrical slots defining drain channels. Metal case and cover have lock-up clutch formed by flat parallel half-rings, which are embraced by cylindrical housing with stop rollers. Sealing unit has safety valve, which is mounted in cover by means of calibrated shear inserts. Sealing unit is formed as screw rod axially mounted in valve, metal band embracing reaction chamber plug and diaphragm spring. Central part of spring is mated with screw rod and peripheral part is located on metal band. Locking seal of reaction chamber is disposed in the plane of drain channels. Sleeve flange end has two conical surfaces of different height. Conical surfaces are disposed at opposite sides of cylindrical protrusion. Metal case and sleeve of reaction chamber are made conical and provided with bottom insert and compensating gasket. Bottom insert is placed on metal case. Compensating gasket is disposed between bottom of reaction chamber and bottom insert. Collector-sleeve is formed as plate with wide bottom. EFFECT: reduced time for preparing sample in automatic mode and provision for safe work. 2 cl, 6 dwg