VALVES FOR UREA INJECTION SYSTEM Russian patent published in 2016 - IPC F01N3/20 B01D53/94 B05B7/26 B05B7/32 

FIELD: agriculture.

SUBSTANCE: device comprises a chamber configured to receive a compressed gas through the first inlet, obtaining the urea solution through the second inlet, and supplying the combined flow of compressed gas and urea to the outlet, the flow channel extending from the first inlet to the placement surface, and a valve element made movable between the open position in which the valve element is spaced from the placement surface, and a closed position in which the valve element contacts the placement surface. When moving the valve element from the open position to the closed position of the valve element contacts the placement surface at the first point and wipes the placement surface area extending from the first point in the direction of the flow channel. The method and the system of dispensing for subsequent treatment of exhaust gases are also disclosed.

EFFECT: reduced growth of crystals of urea or deposition on the components of the system and leakage of urea.

24 cl, 16 dwg