A minimal lubrication device including a storage reservoir for a lubricant fluid and a pump for the lubricant, the pump being of high pressure type with its delivery port connected to at least one modular element adapted to mix a compressed air flow with the lubricant. The modular element presenting
A minimal lubrication device including a storage reservoir for a lubricant fluid and a pump for the lubricant, the pump being of high pressure type with its delivery port connected to at least one modular element adapted to mix a compressed air flow with the lubricant. The modular element presenting a mixer element fed with a compressed air flow into which an outlet of a flow regulator fed by the lubricant originating from the pump opens.
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1. A minimal lubrication device comprising: a storage reservoir for a lubricant liquid,a single high pressure pump module comprising a single high pressure pump for increasing pressure of said lubricant liquid to discharge pressurized liquid lubricant from said single high pressure pump module,said
1. A minimal lubrication device comprising: a storage reservoir for a lubricant liquid,a single high pressure pump module comprising a single high pressure pump for increasing pressure of said lubricant liquid to discharge pressurized liquid lubricant from said single high pressure pump module,said high pressure pump of said high pressure pump module having a lubricant liquid suction port for receiving said lubricant liquid from said reservoir, said pump having a lubricant liquid delivery port,at least one modular element for mixing a compressed air flow with the pressurized lubricant liquid from the pump module,a mixer element,wherein the single high pressure pump module is fixable to at least one said modular element and each modular element presents a lubricant liquid passage,each lubricant liquid passage being a through passage opening into respective opposed openings of surfaces of the at least one modular element such that said single pump lubricant liquid delivery port is connected to the lubricant liquid passage of the at least one modular element,wherein the at least one modular element comprises a flow regulator fed by the pressurized lubricant liquid originating from the single pump, wherein the flow regulator is a needle flow regulator, andwherein said modular element is connected to the mixer element for feeding the compressed air flow and the lubricant liquid to the mixer element to mix the compressed air flow with said lubricant. 2. A device as claimed in claim 1, wherein said single high pressure pump module presents a pump module surface to which a said modular element can be fixed,wherein the pump module surface has a lubricant liquid delivery hole communicating with the delivery port of said single pump for feeding the pressurized lubricant from the single pump to the modular element and an air delivery hole for feeding compressed air to the modular element, and the pump module has a compressed air inlet and a compressed air outlet, wherein the compressed air outlet is for discharging the compressed air through the air delivery hole, andeach modular element presents an air passage having an axis coincident with an axis of the air delivery hole. 3. A device as claimed in claim 1, wherein said high pressure pump is a positive displacement pump. 4. A device as claimed in claim 3, wherein the lubricant liquid comprises lubricant oil, wherein said high pressure pump is for feeding to said modular element the oil at a pressure between 10 and 100 bar. 5. A device as claimed in claim 1, wherein said high pressure pump is driven by compressed air. 6. A device as claimed in claim 1, wherein the lubricant liquid comprises lubricant oil, wherein said modular element comprises a solenoid valve controlling a shut-off device for the oil flow and/or the air flow directed to said mixer element. 7. A device as claimed in claim 1, wherein said modular element presents a cock for adjusting the air flow fed into said mixer element. 8. A device as claimed in claim 7, wherein the lubricant liquid comprises lubricant oil, wherein said modular element presents an anti-drip element adapted to store the oil if compressed air is absent. 9. A device as claimed in claim 1, wherein the lubricant liquid comprises lubricant oil, wherein said modular element comprises fixing means enabling said modular element to be fixed to other identical modular elements and/or to said high pressure pump module, wherein said modular element presents a further surface for fixing a said further identical modular element, said further surface presenting a first lubricant liquid delivery hole for feeding pressurized oil directly from said single pump to the further modular element, and optionally a second air delivery hole for feeding compressed air. 10. A device as claimed in claim 1, wherein said reservoir is mounted on a plate comprising a plate surface to which said single pump module is secured, said surface comprising a first hole for feeding oil from said reservoir to said single pump. 11. A device as claimed in claim 10, the single pump module having a compressed air inlet for receiving compressed air from a compressed air feed and a compressed air outlet, wherein the lubricant liquid comprises lubricant oil, wherein said single pump module presents a surface to which a said modular element can be fixed, said surface comprising a first lubricant liquid delivery hole communicating with the lubricant liquid delivery port of said single pump for feeding the pressurized oil to the modular element and optionally a second air delivery hole for feeding compressed air to the modular element. 12. A device as claimed in claim 1, wherein the lubricant liquid comprises lubricant oil, wherein said modular element presents a further surface for fixing a further identical modular element, said further surface presenting a first lubricant liquid delivery hole for feeding pressurized oil directly from said single pump to the further modular element, and a second air delivery hole for feeding compressed air. 13. A device as claimed in claim 1, wherein the lubricant liquid comprises lubricant oil, wherein several modular elements fixed together define a pressurized oil conduit and/or a compressed air conduit connected respectively to the pump delivery port and to a compressed air source, each modular element drawing compressed air and pressurized lubricant from said conduits. 14. A device as claimed in claim 1, wherein said single pump comprises a body housing a pair of cylinders operated by compressed air, one of which is rigid with a further cylinder for pumping the lubricant fluid. 15. A device as claimed in claim 1, wherein said modular element comprises a vortex tube arranged to lower the temperature of the air flow with which said lubricant is to be mixed.
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이 특허에 인용된 특허 (15)
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