PORTABLE FILTER FOR WATER TREATMENT IN FIELD AND EXTREME CONDITIONS Russian patent published in 2019 - IPC C02F1/18 B01D35/26 

FIELD: water treatment.

SUBSTANCE: invention relates to devices intended for production of drinking-quality water under field conditions, namely to portable filter for water treatment in field and extreme conditions. Portable filter consists of collection prefilter of coarse filter, suction tube connected to inlet of cleaned water equipped with cutoff suction valve, and housing. Body consists of two coaxial mutually compact cylindrical shells capable of moving along the common axis relative to each other thus forming a sealed cavity of variable volume limited by thrusts on the walls of the cups. In the lower cup there is a filter element closed to the outlet of the cup of purified water, which is equipped with an outlet valve. In the upper cup there is an additional container communicating with the variable-volume cavity through the locking device and the pressure reducing valve. Vessel is equipped with an inlet valve for its filling with liquefied gas. Outlet hole into the filter cavity, which is located in the lower part of the container with liquefied gas, from above changes into the siphon tube, the upper end of which is located above the level of the liquefied gas in the container.

EFFECT: technical result consists in improvement of reliability of filter by preventing leakage from outlet of liquid gas, cooling hole and reduction gear and sticking device with ice.

1 cl, 2 dwg