CONTACT DEVICE FOR VAPOR (GAS) - LIQUID HEAT- AND MASS- EXCHANGE APPARATUSES Russian patent published in 1996 - IPC

FIELD: heat- and mass-exchange. SUBSTANCE: device has the base made up as a sheet with shaped through openings overlapped with contact surfaces of valve plates. Each of the valves is provided with partially open and dummy guides from the front and rear sides, respectively. The guides have arresters to restrict the valve lifting. The edges of each through opening, made in the base, are bent vertically. The bend is arranged over the whole width of the opening from the rear side of the valve. The height of the bend is no less than the maximum height of the valve lifting. In addition, the top part of each bend can be provided with an additional horizontal part directed to the overlapping plate of the valve. EFFECT: improved design. 2 cl, 4 dwg