EXTERNAL FILTER Russian patent published in 2008 - IPC A01K63/04 

FIELD: filtration system.

SUBSTANCE: proposed filter is formed by filter container, filtration attachments, engine assembly comprising rotor, a working chamber with a piston assembly and non-return valve. A separate movable control unit incorporates a control element with fluid inlet and outlet and pump-in cycle orifice arranged facing the aforesaid control unit, in its turn, arranged between with working chamber accommodating the piston assembly and furnished with fluid circulation channels. Relative arrangement of the fluid inlet and outlet of the said working chamber matches those of the aforesaid control unit. The control valve is arranged between the working chamber and the pump-in cycle orifice.

EFFECT: system filling during whatever cycles with high throughput capacity.

18 cl, 34 dwg, 4 ex