SEPARATION DEVICE FOR CHECKING PRESSURE IN DUST-GAS MEDIUM Russian patent published in 1995 - IPC

FIELD: separation devices. SUBSTANCE: elastic membrane, which is mounted inside the case, separates internal surface of the case to two chambers and provides transmission of pressure from gas-dust medium under control to measuring device. Membrane has to be the source of emergency of additional aerodynamic forces for blowing channel through from dust particles, through which channel the second chamber is connected with medium under test. The membrane is made with maximal deflection, at which volume of space between its end position is equal to volume of channel, and relation of volume of the second chamber and of the channel belongs to 10-40 range. Dust particles, which rich the chamber, do not form deposits onto its internal conic surface, but they roll into the channel, as angle of slope of generatrix of conic surface is larger than angle of natural inclination of loose material, which dust-gaseous medium contains. EFFECT: improved precision and reliability of measurements. 2 cl, 1 dwg