Dosing device for feeding lubricant to friction couples

摘要

The dosing device includes a plurality of sections successively connected in the direction of the flow of the lubricant namely a valveless head section with a central supply duct, distributing sections and a valveless end section. The housing of each distributing section has a chamber accommodating a reciprocating distributing slide valve. The chamber is closed with closures limiting the reciprocation of the slide valve and defining two metering-out end chambers. Each chamber communicates with the reduced-diameter area of the distributing valve of the preceding section. The housing of each distributing section has central duct perpendicular to the axis of the cylindrical chamber, and outlet ducts. The inlets of the outlet ducts communicate with the cylindrical chamber, while the outlets of these ducts to feed the lubricant to the friction couples. In at least one distributing section the distributing slide valve is provided with means for rotating this valve about its axis through a predetermined angle and for retaining it in the rotated position. The shoulders of the slide valve, facing the metering-out end chambers, each have a single distributing passage. The inlet of this passage communicates with the relieved area of the valve, while its outlet opens onto the external surface of the shoulder. The section housing has other outlet ducts whose inlets are spaced about the perimeter of the wall of the cylindrical chamber, with the geometric axes of these inlets dividing the circumference of the chamber into predetermined angles.