Minimal lubrication device with fine regulation of the oil flow
AssigneeDROPSA S.p.A.
InventorWalter Divisi
Life of this patent
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Abstract
A minimal lubrication device including a lubricant fluid storage reservoir, unit for raising the pressure of the lubricant fluid fed to at least one modular element, the modular element includes a lubricant fluid conduit intercepted by a flow regulator, and a compressed air conduit. The lubricant conduit and the compressed air conduit are associated with an air/lubricant mixer element. The flow regulator includes a valving element at least partly housed within a sized hole and movable therein via a control stem. The stem has at least one portion of conical profile having a length equal to at least 3 times the diameter of the sized hole.
Claims19
A minimal lubrication device comprising
- a lubricant fluid storage reservoir;
- a modular element;
- and
- means for raising the pressure of a lubricant fluid fed from the lubricant storage reservoir to at least one modular element,
- the modular element comprising
- a flow regulator,
- an air/lubricant mixer element comprising
- a lubricant fluid conduit intercepted by the flow regulator, and
- a compressed air conduit,
- wherein the flow regulator comprises a movable valving element at least partly housable within a sized hole and movable therein via a control stem,
- wherein the flow regulator further comprises a bush abutting the modular element to act as an upper travel limit for the movable valving element, the sized hole communicating at one end with the delivery of said pressurized lubricant and at the other end with an outlet of said flow regulator,
- said stem having at least one portion of conical profile insertable into said sized hole,
- wherein said at least one portion of conical profile has a surface inclined to the axis of the valving element by an angle between 0.1 deg and 2 deg.
Dependencies are inferred from the claim text.