Centrifugal pump
阅读：631发布：2023-05-03
专利汇可以提供Centrifugal pump专利检索，专利查询，专利分析的服务。并且A speed increaser for a high speed centrifugal pump including a gearbox with a motor driven large gear therein drivingly interengaging a small pinion formed on a pump impeller rotating shaft. The gearbox is divided by a shroud adjacent the gears defining an oil reservoir on one side and a gear cavity on the other. A bleed orifice is provided in the shroud for bleeding oil into the gear cavity at a rate sufficient to maintain oil at a skimming level with respect to the large gear so that the large gear splashes oil in the gear cavity into a mist for lubricating the gears in various bearings within the gearbox.，下面是Centrifugal pump专利的具体信息内容。
1. A rotary pump assembly, comprising; a rotary pump, drive means for said rotary pump including a gearbox, first and second speed increasing horizontal intermeshing gears in said gearbox, a vertically disposed shroud in said gearbox defining a sealed lubrication reservoir and a gear chamber within the gearbox, and means for bleeding fluid from the reservoir into the gear chamber for lubricating the gears by maintaining a predetermined fluid level in said gear chamber.
2. A rotary pump assembly as defined in claim 1, wherein said means for bleeding fluid is a bleed orifice in said shroud.
3. A rotary pump assembly as defined in claim 2, wherein said bleed orifice is sufficiently small to bleed fluid into the gear chamber to maintain a gear teeth skimming level at one of said gears.
4. A rotary pump assembly as defined in claim 1, said intermeshing gears being a speed increaser for said pump and including a lower large gear and an intermeshing upper pinion gear, shaft means supporting said pinion and driving said pump, bearing means supporting said shaft means, said bleed means bleeding a sufficient amount of fluid from said reservoir to said gear chamber to maintain a level in the gear chamber so that the large gear skims oil into a mist for lubrication.
5. A rotary pump assembly as defined in claim 1, said bleeding means being sufficient to provide an oil level in the gear chamber so that one of the gears splashes oil into a mist, said shroud having an opening therethrough permitting the egress of oil from the gear chamber to said reservoir, said bleed means being sufficiently large to maintain an equilibrium between the egress of oil from the gear chamber and the bleeding of oil into the chamber.
6. A rotary pump assembly, comprising; motor means having a drive shaft, a gearbox into which said drive shaft extends, speed increasing horizontal gears including a large gear connected to said motor drive shaft, an intermeshing small pinion gear above the large gear in the gearbox, pinion shaft means carrying said pinion, a bearing at each end of the pinion shaft means, a rotary pump, said pinion shaft means being drivingly connected to said pump, said gearbox having a vertical shroud thereon dividing the gearbox into a sealed oil reservoir and a gear chamber in which the large gear is locAted, an opening in said shroud adjacent the upper portion thereof permitting the egress of oil from the gear chamber, bleed means in said shroud for maintaining an oil level in the gear chamber, said bleed means being sufficient to maintain and oil skimming level adjacent the large gear to produce a lubrication mist.
7. A rotary pump assembly as defined in claim 6, wherein said opening in the shroud is around one of said bearings and the gears approximately at their point of engagement.
8. A rotary pump assembly as defined in claim 7, wherein said opening permits oil mist to lubricate the other bearing supporting said pinion shaft means.
9. A rotary pump assembly as defined in claim 6, wherein said bleed means includes an orifice in said shroud means adjacent the lower portion of the large gear and below the static and dynamic oil levels in the reservoir.
10. A rotary pump assembly, comprising; a motor, a motor shaft extending from said motor, a gearbox housing, said motor shaft projecting into said gearbox housing, speed increasing gearing horizontally disposed including a large gear fixed to said motor shaft, a pinion gear interengaging said large gear, a pinion shaft carrying said pinion, spaced bearings supporting said pinion shaft, a rotary pump fixed to said gearbox, a lubrication system for the gears and the bearings including a generally vertical cup-shaped shroud in said gearbox dividing the same into a sealed reservoir and a gear chamber, said shroud having an opening therethrough in the upper portion thereof to permit the pinion shaft to pass at least partly therethrough, a bleed opening in said shroud adjacent the lower portion of the large gear permitting oil to bleed from the reservoir into the chamber at a rate under dynamic conditions sufficient to maintain an oil skimming level in the gear chamber adjacent the large gear so that the large gear skims oil into a mist, said opening in the shroud being positioned to permit oil to pass from the gear chamber to the reservoir, the dynamic oil level in the reservoir being substantially higher than the dynamic oil level in the gear chamber, said bleed orifice being substantially below the oil level in the reservoir.
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