Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
  • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D29/00—Details, component parts, or accessories
  • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
  • F04D29/056—Bearings
  • F04D29/059—Roller bearings
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
  • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
  • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
  • F04C29/02—Lubrication; Lubricant separation
  • F04C29/025—Lubrication; Lubricant separation using a lubricant pump
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D25/00—Pumping installations or systems
  • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
  • F04D25/163—Combinations of two or more pumps ; Producing two or more separate gas flows driven by a common gearing arrangement
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D29/00—Details, component parts, or accessories
  • F04D29/04—Shafts or bearings, or assemblies thereof
  • F04D29/046—Bearings
  • F04D29/049—Roller bearings
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D29/00—Details, component parts, or accessories
  • F04D29/40—Casings; Connections of working fluid
  • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
  • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D29/00—Details, component parts, or accessories
  • F04D29/40—Casings; Connections of working fluid
  • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
  • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16N—LUBRICATING
  • F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
  • F16N7/36—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with feed by pumping action of the member to be lubricated or of a shaft of the machine; Centrifugal lubrication

Definitions

• the invention relates to a rotary pump for gearboxes and units for conveying liquid or gaseous media, which has an independent housing with channels for inlet and outlet and a one-part or multi-part inner-axis rotor unit.
• hydrostatic positive displacement pumps of various types, for example gear pumps, peristaltic pumps, piston pumps, etc., are known for this task. They enable high pressures and forced circulation.
• centrifugal hydrodynamic rotary pumps can be used.
• Types are known in which a compact assignment of the pump is achieved by including existing components of the gearbox or aggregate in the function of the pump.
• the end of an aggregate shaft is used as a driving bracket for the pump rotor (DE 30 22 419).
• the unit housing serves equally as a pump housing and as a support for the shaft bearing for the pump and for the unit (DE-OS 34 17 307).
• a pump is connected to a roller bearing to form a structural unit (G 81 26 303).
• the bearing outer ring forms the pump housing and the bearing inner ring the driving bracket of the pump rotors.
• the advantage of incorporating a pump with an independently required aggregate bearing, with little adaptation effort, is, however, paid for by the disadvantage of a complex special production of the roller bearings. Except for a special large series requirement, it is very expensive to combine the variety of possible storage tasks and storage sizes in this way with a pump.
• the invention is therefore based on the object of providing a pump for gearboxes and units for conveying liquid or gaseous media which, in a simple, compact design, with minimal additional space requirement and little adaptation effort, corresponds to different tasks and structural conditions, in or on gearboxes or Aggregates can be used.
• the invention is based on the knowledge that a pump corresponding to the task must be designed in such a way that it can be used largely in rooms or to match dimensions that are also available without a pump; that it uses existing drive options and, if possible or necessary, takes on further functions in order to keep the total number of additional components or additional machining sequences on the housings of the gears or units low.
• a rotary pump which is arranged with an independent housing next to a shaft bearing which is independent of the pump and whose pump rotor is driven by the mounted shaft, the rotary pump having a diameter, width and fit ratio in a standardized design ⁇ , which are adapted to those of rolling bearings and the housing of the rotary pump is optionally designed as a uniform sleeve-shaped component or as a sleeve-shaped component that has a cover-shaped part on the side facing away from the shaft bearing, which has the function of a supporting gear or unit cover with or without shaft bushing.
• This new type of assignment and design has the advantage that suitable pump capacities can be selected and used in a standardized manner in accordance with the sizes and types of roller bearings matched to the gearbox or unit performance and tasks; comparable to the use of other standardized components assigned to the bearing sizes.
• the rotary pump according to the invention assumes a supporting and / or positioning function for the shaft bearings arranged next to it, for example instead of a supporting bushing or, with a corresponding design, also the function of a supporting housing cover.
• the medium can be moved through the side bearing or kept away from it by sealing elements.
• rotary pump not only in new, but often without much effort and additional Construction volume can also be incorporated into existing gear or unit concepts.
• both the pump and the adjacent bearing can be replaced independently of one another, so that a free, inexpensive combination of bearing and pump properties is possible in a simple manner.
• the adapted pump construction also simplifies maintenance in the event of wear, with assembly and disassembly of the pump or bearing.
• the outer pump contour has diameters which are adapted to those of an associated roller bearing.
• the adaptation can mean identical dimensions or allow a slight deviation in such a way that it can be bridged with simple support sleeves, shims or the sealing washers of the pump. This has the advantage that the pumps do not have to be available in every bearing size, but rather cover selected size classes without unduly expanding the installation space or complicating the installation.
• the pump housing is provided with a cover-shaped part on the side facing away from the shaft bearing, corresponding to an aggregate cover, the inlet and outlet can be guided through the cover part on the pump side without changing the usual cover diameters which are assigned to the bearing diameters Need to become.
• such a pump (1) is arranged as a sleeve-shaped component next to a bearing (2), on a driving shaft (3) and in an assembly housing (4).
• a hydrodynamic centrifugal pump is shown. It has a housing (5), a rotor (6) which is designed as an axially floating centrifugal wheel and a sealing disc (7).
• the pump supports the lateral forces of the outer bearing ring (8) via the sealing washer (7) and the pump housing (5) against an external support ring (10). It sucks the medium through an inlet bore (11) in the unit housing (4) and through a channel (12) arranged radially in the pump housing (5) into the rotor (6).
• the centrifugal forces push the medium through an opening (13) into an annular channel (14) and from there into the outlet channels (15) of the unit housing (4).
• Pump (1) and bearing (2) have the same inside and outside diameter.
• FIG. 2 shows a pump (1), the housing of which is designed as a sleeve-shaped component (5.1) which, on the side facing away from the shaft bearing (2), has a cover-shaped part (5.2) which functions as a support takes over the gear cover with a shaft bushing.
• the rotor (6) is designed as an axially floating vane rotor, which is seated in an eccentric housing bore (19).
• the inlet and outlet bores (20) are guided through the cover part (5.2) of the housing.
• the part of the housing (5.1) which is adapted to the bearing diameter is used as an example in a bore in an assembly housing (4) which is somewhat larger than the bearing outer diameter.
• the small diameter difference to the supported bearing (2) bridges the side sealing disc (7) of the pump (1).
• 3 shows a detail from FIG. 1 with the difference that a second pump (1.2) is arranged next to the pump (1.1), the housing of which, as shown in FIG. 2, has a cover-shaped part (5.2).
• Both pumps have identical rotors and their channels are designed such that the flow of the medium flows through both pumps in succession.
• the series connection of the pumps increases the pump pressure and delivery rate.
• the two rotors do not have to be of the same internal design.
• Fig. 4 shows a section of two similar pumps (1.1 and 1.2) corresponding to Fig. 1, which are arranged next to each other in such a way that they suck through a common channel, but produce separate flow rates in parallel, which flow through the outlet channels (15.1 and 15.2 ) to get redirected.
• the inner bearing ring (9) is firmly clamped via a shim (16), the two rotors (6) and a shaft nut (17).
• the outer bearing ring (8) is additionally braced against a conventional bearing cover (18) via the two pump housings (5) and the sealing washers (7).
• the inside diameter of both pumps is a little smaller than that of the bearing. The difference in diameter is bridged by the shim (16).
• Fig. 5 shows the compact design of a pump (1), corresponding to Fig. 2, but with a different rotor and without shaft passage.
• the pump rotor (6) is designed as a centrifugal wheel and is mounted in a floating manner, so that it is not disturbed by the shaft end tipping due to shaft deflection and possible evasion of the tapered roller bearing (22) shown.
• the rotor (6) is driven by driver pins (21) which engage in the end of the supported shaft (3).
• the pump is so compact that it does not take up more space than a normally used gear cover with a support collar.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Details And Applications Of Rotary Liquid Pumps (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=8165557

Family Applications (1)

Country Status (3)

Families Citing this family (3)

Family Cites Families (5)

• 1991
  • 1991-01-23 WO PCT/EP1991/000122 patent/WO1992013196A1/de unknown
  • 1991-01-23 EP EP91902679A patent/EP0549579A1/de not_active Withdrawn
• 1992
  • 1992-09-23 KR KR1019920702308A patent/KR100202163B1/ko not_active IP Right Cessation

Non-Patent Citations (1)

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