SEGMENTED VALVE WITH HEATING JACKET Russian patent published in 2017 - IPC F16K5/06 F16K1/20 F16K49/00 

FIELD: machine engineering.

SUBSTANCE: invention is intended for installation of valves as locking devices in production lines of gas, chemical, oil refining, pulp and paper and other industries using liquid, gaseous, as well as aggressive working media that crystallise when the temperature is lowered, where subject to the operating conditions the working medium should be heated to avoid congealing. The segmented valve with external heating comprises of a housing with inlet and outlet connection flanges and a heating jacket, a locking body installed in the housing, a rod sealed with an oil seal and connected to the drive device. The locking body is made in the form of a segment rotating in the supports of the upper and lower bearings and in contact with the sealing seat. The housing has fittings and channels for purging the oil seal of the rod and the lower and upper bearings.

EFFECT: elimination of crystallization of the working medium, sealing the rod and supports of the locking body by heating via purging the rod oil seal, the lower and upper bearings of the locking body, and avoidance of hidden cavities in the housing where the working medium can congeal.

4 cl, 2 dwg