VALVE OF HOSE FOR SUPPLY OF FINELY CRUSHED MATERIAL Russian patent published in 2012 - IPC F16K7/07 D21C11/04 

FIELD: machine building.

SUBSTANCE: invention is meant for being used as tubular outlet valve for crushed material, preferably dry caustic lime mud, which maintains the content of dry substance at the level of 65-90%. Tubular valve (14) includes elastic inner pipe arranged inside pressure chamber that envelopes elastic inner pipe. Flexible inner pipe of the valve has minimum length that exceeds the pipe diameter by two times, but which is less than the pipe diameter by five times. The above pipe is fixed with its ends in pressure chamber with axial pre-tension between two anchors on the ends of pressure chamber, has the length in its non-loaded and uninstalled condition, which is by 3-10% less than its length in installed condition, and has constriction in the form of sand glass. Pressure chamber is connected through connections (143a/143b) to pressure control in pressure chamber from the first pressure that is basically equal to the pressure specified inside flexible inner pipe to the second pressure that is less than the pressure specified inside flexible inner pipe.

EFFECT: improvement of valve operating reliability.

3 cl, 2 dwg