CN101482112A - Pumping unit - Google Patents
Pumping unit Download PDFInfo
- Publication number
- CN101482112A CN101482112A CNA2009100029032A CN200910002903A CN101482112A CN 101482112 A CN101482112 A CN 101482112A CN A2009100029032 A CNA2009100029032 A CN A2009100029032A CN 200910002903 A CN200910002903 A CN 200910002903A CN 101482112 A CN101482112 A CN 101482112A
- Authority
- CN
- China
- Prior art keywords
- pump
- conveying equipment
- gear
- pump case
- described conveying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005086 pumping Methods 0.000 title abstract description 4
- 229920003023 plastic Polymers 0.000 claims description 23
- 239000004033 plastic Substances 0.000 claims description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000011324 bead Substances 0.000 claims description 8
- 238000002788 crimping Methods 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000004411 aluminium Substances 0.000 claims description 7
- 238000004512 die casting Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 2
- 210000003734 kidney Anatomy 0.000 description 22
- 239000000463 material Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000012447 hatching Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000002277 temperature effect Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Images
Classifications
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- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/101—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with a crescent-shaped filler element, located between the inner and outer intermeshing members
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- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/086—Carter
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- 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
- F04C2230/00—Manufacture
- F04C2230/20—Manufacture essentially without removing material
- F04C2230/21—Manufacture essentially without removing material by casting
-
- 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
- F04C2230/00—Manufacture
- F04C2230/20—Manufacture essentially without removing material
- F04C2230/22—Manufacture essentially without removing material by sintering
-
- 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
- F04C2240/00—Components
- F04C2240/50—Bearings
- F04C2240/51—Bearings for cantilever assemblies
-
- 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
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/17—Tolerance; Play; Gap
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2251/00—Material properties
- F05C2251/04—Thermal properties
Abstract
The present invention relates to a transfer device, specifically to a pumping unit (10) which has a hollow wheel (14) and a gear wheel (16) meshing with each other, where the gear wheel is accommodated at a driveshaft (15) around an axis. The driveshaft runs in an eccentricity (37) to an axis of the hollow wheel (14), and the hollow wheel and gear wheel are accommodated in a housing (11). The housing is formed in two-parts, and has a pump housing (13) supported in a carrier housing (12) in a clearance free manner.
Description
Background technique
DE 102 45 814 B3 relate to a kind of conveying equipment, especially a kind of internal gear pump with enlargement discharge.Internal gear pump includes a housing, a gear chamber that in housing, forms, and this chamber has the inlet opening of a fluid in low voltage side, and an exit orifice is arranged in the high pressure side.An internal gear is housed in the gear chamber, and it can and have a kind of outer gearing tooth around the rotation of spin axis, and an external gear is housed in addition, and it has interior engaging tooth, and it meshes with the outer gearing tooth of internal gear.When driving, the gear rotation forms the conveying oil pocket that expands in low voltage side with the outer gearing tooth, form the conveying oil pocket of compression in the high pressure side, wherein form a recess respectively on the tooth root inside story in the tooth root of engaging tooth outside, this recess is stretched over the end face of outer gearing tooth always.The radial depth of this recess on end face is greater than with end face axial spacing, the degree of depth in the position, the inside at the bottom of the tooth root being arranged at one.At least this axially covers recess facing to the inlet opening that the end face face-off ground of outer gearing tooth is arranged.Known by DE 102 45 814 B3 at this, internal gear is provided with the recess that is positioned in the edge in the no sickleshaped gear pump.
If internal gear pump is for example such by the known internal gear pump of DE 102 45 814 B3, make little radial clearance, this causes good volumetric efficiency, and internal gear pump is polluted easily so.Lived by jam when the starting in order to prevent for example a kind of motor-drive pump, additional measure must be arranged,, and avoid its jam to live, especially when starting so that internal gear pump is designed to polluting insensitive owing to clamp at the chip between the gear.
WO 03,/09 58 40 A1 relates to a kind of rotary pump with variable feed flow, in particular for transferring oil.Pump includes at least the first and second rotors, and they are meshing with each other and have first and second longitudinal shafts respectively, and these axles are operation in parallel to each other basically.First drive unit is designed for and drives first and second rotors, around first and second.Disclosed pump includes second drive unit in addition and is used for around first making second rotation in WO 03,/09 58 40 A1.
For by the known pump of WO 03,/09 58 40 A1, be meant a kind of adjusting servopump, the pump case of a inside is designed to and can regulates in this pump.In this adjusting servopump, axial clearance must be arranged, so that adjust the pump case that this is arranged in the inside.
Summary of the invention
According to the invention provides a kind of pump case that is designed to two parts, its produces a kind of support housing of can very economical advantageously making, and it for example can or also be made by plastic materials by aluminium high pressure die casting.A pump case of can economy advantageously making can be sintered component or equally also make plastic components in support housing, be arranged to have good bearing performance, this is used to guarantee conveying equipment, and especially the moving element of internal gear pump has good self-lubricating property (Notlaufeigenschaften).Support housing is made by the favourable plastic materials of a kind of economy.Pump case is enclosed in the support housing.Especially plastic materials can shape much more stable and accurate as to make, and this is that this at first is applicable to plastic materials because occur shrinking and warpage is wanted much less.Interior profile has a kind of sickle shaped structure, and the pump gear of intermeshing internal gear pump moves therein, and therefore this interior profile can be made very accurately, and this helps manufacture cost relatively low on the one hand, makes internal gear pump that good efficiency is arranged on the other hand.
Pump cover is equally also preferably made sintered component or plastic components, and they have the bearing performance of the moving element that is used for internal gear pump accordingly.Pump cover especially be designed to jar shape capping and can economy advantageously by steel or equally also economy moulding plate advantageously made of aluminum.The capping that is designed to jar shape for example can be connected with pump case by crimping.Therefore for example can avoid complicated bothersome engaging process.For example resemble being threaded of mutual parts to be joined.
The pitch wheel of internal gear pump can be made sintered part(s) or by a kind of plastic materials, for example be made plastic part with the plastic pressure injection method by a kind of agglomerated material.Especially the small gear of internal gear pump (its outer gearing tooth and surround the interior engaging tooth engagement of the internal gear of this small gear) is by hot pressing or compress (aufpressen) to being designed on the wear-resistant live axle.Therefore making according to as suggested in the present invention, can adopt when being used for the internal gear pump of the low pressure area between 3bar to 20bar to be fit to large batch of assembling and manufacturing process.The structural principle of the internal gear pump of institute of the present invention foundation also can be used to be designed to not have the internal gear pump of sickle shaped structure.Can be used to make this conveying equipment with the manufacturing process that adopts in enormous quantities, it is characterized in that not having the part of cutting by the present invention's suggestion.Be fit to large batch of assembly process for example by compressing and being out of shape, for example crimping is realized.
By the present invention suggestion, a major advantage that especially is designed to the transfer unit of internal gear pump is to produce under the situation of having used the material with identical as far as possible thermal expansion.The conveying equipment of making like this can be used for a very wide temperature range, and axially-or radial clearance with respect to the sealing off gap between pumping element fixing and motion narrow down or broaden give birth to big variation.Therefore conveying equipment always guarantees good hydraulic efficiency very widely on this temperature range that can select, and this also makes and moves the very steady and good lubricating property that grows on trees.
In a kind of preferred implementing form according to conveying equipment of the present invention, for example pump case, pitch wheel (small gear and internal gear), a jar shape capping can be made by sintered steel (Sinterstahl), and lid also can be formed from steel.Pump case is preferably made by aluminium die casting or by plastic materials, and this is because clamping length (Verspannungslange) 1 on support housing less and can keep less based on moving element with respect to the temperature effect of the thermal expansion that is produced of fixed component in this way.
Support housing, pump case, small gear and internal gear, alternatively can make with pump cover by senior plastics, pump case and pump cover can be made by a kind of material with good bearing performance, and capping then can alternatively be made by a kind of aluminum diecasting alloy or similar material.
Description of drawings
Below with reference to the accompanying drawings the present invention is described in detail.
Be depicted as:
Fig. 1: according to the longitudinal sectional view that is parallel to live axle of the conveying equipment of the present invention suggestion, the hatching A-B shown in having;
Fig. 2: according to the cross-section profile of hatching A-B shown in Figure 1 according to conveying equipment of the present invention;
Fig. 3: according to hatching C-D, the sectional view of a conveying equipment in the live axle plane.
Embodiment
According to especially a kind of internal gear pump of conveying equipment as suggested in the present invention 10, can conveyance fluid with it, for example resemble oil, driver oil or analog.Especially use when the pressure of 3bar to the 20bar order of magnitude by the conveying equipment 10 of the present invention suggestion, it is characterized in that little volume and little flow.By the present invention suggestion, the conveying equipment 10 that especially is designed to internal gear pump is characterised in that and is guaranteeing very favourable manufacturing expense under the little situation of high robustness and weight.
As by the sectional view of Fig. 1 as seen, conveying equipment 10 includes one, and to be designed to be the housing 11 of two parts substantially.Housing 11 includes a support housing 12 and includes a pump case 13 that is arranged on 12 li of support housings, is provided with a bead with the eccentric axis of live axle 15 on support housing.Pump case 13 seamlessly is bearing in 11 li of housings that are designed to two parts in the position of 38 li or one bearing journals 36 in the pump operation of 12 li of support housings annular position.13 li of pump case an internal gear is arranged, it is preferably power transmission and is connected ground and meshes with the gear 16 that shrink fit or press fit form anti-rotation ground is fixed on the live axle 15 with one, and this gear 16 is also referred to as small gear.In the internal gear 14 and gear 16 fronts of pump case 13, live axle 15 end faces a pump cover 17 is arranged in the end face side.Pump cover 17 is again by means of capping 18 centerings of a jar shape structure and be fixed on by a kind of crimping 24 (as shown in Figure 1) on the bead of equally also mentioning of support housing 12 of housing 11.
Be designed to 18 whiles of capping of jar shape and the outer diameter centering of pump matrix 13 and pump cover 17.This capping 18 that is designed to jar shape is felt relieved on the bead on the support housing 12 that extends in the housing 11 that makes two parts prejudicially.Bead is designed to become eccentric with the receiving opening of the bearing journal 36 of pump case 13.The connection of member is undertaken by the crimping of capping 18 on the bead of the support housing 12 of the housing 11 that makes two parts that this is designed to jar shape.The plane of pump case 13 (
) coordinate therefore just can not consider with respect to the size of support housing 12.Can realize as far as possible little outer diameter on by the conveying equipment 10 of the present invention suggestion by this structural type, this assembly 10 especially is designed to internal gear pump, wherein make-or assembly fee realized to a great extent minimizing.
Because bearing journal 36 is arranged to relative support housing 12 off-centre 37 is arranged, the pump case 13 that therefore is positioned at the inside can not be rotated.Pump case 13 axially seamlessly is arranged between support housing 12 and the pump cover 17, to avoid owing to additional axial slits causes hydraulic slip.
In a hole of the support housing 12 of conveying equipment 10 Simmer ring 20 is arranged, it is bearing in one and goes up on the Moving plate 21.Arresting disc 21 is fixed by an axial restraint back-up ring 22 again.The live axle 15 that is surrounded by the bearing journal 36 of pump case 13 is provided with an inner polygon hole (Innentorx) 23 in the embodiment depicted in fig. 1, by it can make live axle 25 and therefore make gear or small gear 16 by a kind of in Fig. 1 unshowned electric driver be driven.
As previously mentioned, capping 18 axially seamlessly is connected by a kind of crimping 24 partly or along whole circumference with support housing 12.Housing 13 seamlessly designs 12 li of the support housings of the housing that makes two parts 11 of conveying equipment 10, also has a sickleshaped portion 30 for 13 li at housing.As by analysing and observe as seen among Fig. 1, sickleshaped portion 30 is used for for example gear 16 of hot pressing on live axle 15 led, and is used for the interior guiding (seeing shown in Figure 2) of internal gear 14 and is used for separately aspirating side and on the pressure side.Internal gear 14 and gear 16 have little gap when conveying equipment 10 operations and between the sickle shaped structure 30.Gear 16 is by live axle 15 guiding, and internal gear 14 is guiding on the pump operation ring 38 of pump case 13 then.
Fig. 2 is a sectional view by conveying equipment as suggested in the present invention corresponding to Fig. 1 section line A-B.
As seen from Figure 2, conveying equipment 10 is preferably designed to internal gear pump, and it includes a flange 25.Flange 25 is used for fixing on a driver case or similar object.A suction of label 26 expressions interface; Label 27 expression pressure outputs will be raised to the higher-pressure level fluid from 10 li outputs of conveying equipment by this pressure output, and this assembly 10 especially is designed to internal gear pump.As being also shown in, this for example is driven on sense of rotation 31 by means of the gear 16 that a kind of shrink fit is arranged on the live axle 15 by a kind of unshowned electric driver by Fig. 2.Gear 16 is the interior engaging tooth engagement of the outer gearing tooth of small gear 16 and internal gear 14 in other words.Suction interface 26 feeds suction kidney (Saugniere) 28 li, and pressure export 27 is by coming out for 29 li with pressure kidney (Druckniere).Suction side and on the pressure side mesh and be separated from each other by sickleshaped portion 30 by the tooth between the interior engaging tooth of the outer gearing tooth of gear 16 or small gear 16 and internal gear 14.As seen from Figure 2, sickleshaped portion 30 will and on the pressure side separate according to the suction side of the conveying equipment 10 of the present invention's suggestion.
The fluid of carrying by suction interface 26, for example driver oil is by in the suction side, just is transferred on the tooth at suction interface 26 places is engaged on the direction of pressure kidney 29 and reaches a higher stress level at this.Conveying equipment 10 according to the present invention's suggestion especially is designed to internal gear pump, can preferably use in a pressure range with 3bar to 20bar.By these outside engaging tooth tooth in other words between the tooth of the interior engaging tooth of internal gear 14 space of each self-forming carry out the conveying of fluid.
Fig. 3 has represented among Fig. 2 the sectional view along C-D.
Fig. 3 expresses: suction interface 26 feeds in 28 li in suction kidney, and pressure export 27 then is connected with pressure kidney 29.Make sickleshaped portion 30 that suction kidney 28 and pressure kidney 29 separate by in the analysing and observe of Fig. 3 and not shown, this is to be positioned at (see figure 2) on the Section line C-D because of it.
As by Fig. 1 and 2 with regard to bearing journal 36 as seen, this bearing journal is arranged to eccentric 37 with respect to pump running ring portion position 38 (seeing shown in Figure 1).Therefore pump case 13 can not be rotated under the state of assembling.In order also to get rid of the rotation of pump cover 17, on the end face of pump case 13, for example be provided with a stop protrusion 39.The recess 40 of stop protrusion 39 on pump cover 17 inboard faces forms a kind of anti-rotation and fixes.
As seeing by analysing and observe of Fig. 3, between hollow cavity and pressure kidney 28, be extended with first hole 41, hollow cavity is enclosed in 13 li of pump case by Simmer ring 20.By this first hole Simmer ring 20 is pressed towards the suction side dumping, so that before Simmer ring 20, do not setting up pressure on the live axle slit.On the first pressure balance kidney, 34 opposites are second holes 42, and it has stoped: set up too high pressure between the capping 18 of pump cover 17 and jar shape.
Conveying equipment 10 slit not axial and radial effect compensates.The pump parts just make on the pressure side by sealing off gap and seal mutually with the suction side.
As seen from Figure 3, flange 25 has one or more fastener hole, they for example can with the suction interface 26 that feeds 28 li in suction kidney and/or with align from 29 li pressure exports that come out 27 of pressure kidney.In addition as seen from Figure 3: the capping 18 that is designed to jar shape is fixed with the bead shape that (referring to Fig. 1) prejudicially is formed on the support housing 12 of the housings of being made up of two parts 11 at crimping 24 places with being connected.Label 19 has been represented seal ring 19, and it is between the support housing 12 of the housing of being made up of two parts 11 of capping 18 that is designed to jar shape and conveying equipment 10.
Also expressed in Fig. 3: live axle 15 includes an inner polygon hole 23, can import the torque of electric driver into live axle 15 by it, on this live axle preferably by means of a kind of hot pressing-or press fit fixed gear 16 small gear 16 in other words.
Especially the housing of being made up of two parts 11 that is designed to the conveying equipment 10 of internal gear pump includes support housing 12 and pump case 13.Support housing 12 especially can or be made of plastics by aluminium die casting.Pump case 13 seamlessly is arranged on wherein, and pump case 13 for example can be processed into the favourable sintered component of expense.The pump case 13 that seamlessly is built in 12 li of support housings also can make have bearing performance plastic part to substitute as sintered part(s).This can make the pump parts of motion have good self-lubricating property, if import discontinued words through the fed sheet of a media of suction interface 26.Support housing 12 can be made by the favourable plastic materials of expense.Real pump case that is to say that the cost of pump case 13 materials is less and therefore can make more accurate more stablely with shape.If the pump case 13 by two housings of partly forming 11 of conveying equipment 10 is made of plastics, that the much smaller contraction and the warpage of much less just occur.Internal gear 14 moves having in the interior profile of sickleshaped portion 30 with its meshed gears 16 in other words, and profile can be made very accurately in this, and this makes manufacture cost extremely low and make conveying equipment 10 have good hydraulic efficiency.
Gear mesh that is to say that internal gear 14 and gear 16 can preferably be made sintered part or also can be working of plastics.Gear 16 preferably is pressed on the live axle 14 of Resistant Design with a kind of shrink fit.Therefore when making this, just can adopt suitable large batch of assembling-and manufacture method by conveying equipment 10 as suggested in the present invention.
Although the front is described the conveying equipment 10 with sickleshaped portion 30, design of the present invention can certainly be used in a kind of conveying equipment 10 that is designed to not have the internal gear pump of sickleshaped portion.
Under the situation of having used material, obtain a major advantage by conveying equipment 10 as suggested in the present invention with identical as far as possible thermal expansion.Conveying equipment 10, the especially internal gear pump made by such material then can be used in the very wide temperature range, and the vital gap for sealing off gap of movable pumping element does not have great variation.Therefore always guaranteed that conveying equipment 10 has good hydraulic efficiency, operated steadily in addition, lubricated good.
Is sintered steel as operable material with regard to pump case basis 13, internal gear 14, gear 16, capping 7, is steel with regard to a jar shape capping 18.Pump case 13 also can or be made of plastics by aluminium die casting, because the clamping length on support housing 12 is little, and can make with regard to the temperature effect of thermal expansion less in this way.
Claims (11)
1. conveying equipment, especially internal gear pump (10), have internal gear (14) and gear (16), they are meshing with each other, and gear (16) is contained on the live axle (15) around axis, and its axis with respect to internal gear (14) extends with an eccentricity (37), and they are contained in housing (11) lining, it is characterized in that housing (11) is designed to two parts and includes the pump case (13) that seamlessly is bearing in support housing (12) lining.
2. by the described conveying equipment of claim 1, it is characterized in that, pump case (13) seamlessly in the position of pump running ring (38) with at the position upper support of bearing journal (36) in support housing (12) lining.
3. by the described conveying equipment of claim 1, it is characterized in that pump case (13) axially seamlessly is installed between support housing (12) and the pump cover (17), to avoid owing to additional axial slits causes hydraulic slip.
4. by the described conveying equipment of claim 1, it is characterized in that capping (18) is designed to jar shape and makes pump case (13) and pump cover (17) realization centering.
5. by the described conveying equipment of claim 4, it is characterized in that capping (18) is felt relieved on the bead of support housing (12), the receiving hole of this bead and supporting neck (36) constitutes prejudicially.
6. by the described conveying equipment of claim 4, it is characterized in that, capping (18) and be connected (24) of support housing (12) by form fit, especially crimping interconnects.
7. by the described conveying equipment of claim 4, it is characterized in that pump cover (17) is prevented from rotating by the anti-rotation fixing device (39,40) on pump case (13).
8. by the described conveying equipment of claim 1, it is characterized in that gear (16) is connected ground, especially couples together by means of shrink fit with live axle (15) power transmission.
9. by the one or more of described conveying equipment of aforesaid right requirement, it is characterized in that pump case (13), internal gear (14), gear (16), pump cover (17) are made by sintered steel, capping (18) is formed from steel.
10. by the one or more of described conveying equipment in the claim 1 to 9, it is characterized in that pump case (13) is by aluminium die casting or be made of plastics.
11. by the one or more of described conveying equipment in the claim 1 to 9, it is characterized in that, support housing (12), pump case (13), internal gear (14), gear (16) and pump cover (17) are made by senior plastics, perhaps pump cover (17) and pump case (13) are made by the plastics with bearing performance, and perhaps capping (13) is made by aluminium die casting.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008003843.1 | 2008-01-10 | ||
| DE200810003843 DE102008003843A1 (en) | 2008-01-10 | 2008-01-10 | delivery unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101482112A true CN101482112A (en) | 2009-07-15 |
| CN101482112B CN101482112B (en) | 2014-11-05 |
Family
ID=40551469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910002903.2A Expired - Fee Related CN101482112B (en) | 2008-01-10 | 2009-01-12 | Pumping unit |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2078860B1 (en) |
| CN (1) | CN101482112B (en) |
| DE (1) | DE102008003843A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705119A (en) * | 2012-06-27 | 2012-10-03 | 无锡开普动力有限公司 | Transmission and connection structure of electrical control high pressure common rail pump |
| CN103423575A (en) * | 2013-08-21 | 2013-12-04 | 安徽华菱汽车有限公司 | Gear-type engine oil pump |
| CN103516099A (en) * | 2012-06-27 | 2014-01-15 | 罗伯特·博世有限公司 | Commutation for power transmission in an electrical machine |
| CN104632615A (en) * | 2013-11-13 | 2015-05-20 | 马勒国际有限公司 | Pendulum slide cell pump |
| CN110925471A (en) * | 2019-12-10 | 2020-03-27 | 上海廷本流体控制有限公司 | Low-temperature stop valve |
| CN111520322A (en) * | 2019-02-04 | 2020-08-11 | 施瓦本冶金工程汽车有限公司 | Internal gear pump |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011077949A1 (en) * | 2011-06-22 | 2012-12-27 | Robert Bosch Gmbh | gear pump |
| DE102012216256A1 (en) * | 2012-09-13 | 2014-03-13 | Robert Bosch Gmbh | External gear machine e.g. pump, has channels guided from high pressure terminal to compensation pressure fields that are provided for force loading of bearing sleeves against force effect of pressure or force effect of portion of pressure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2709678Y (en) * | 2004-06-19 | 2005-07-13 | 谢云海 | Gear sundstrand pump |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4492539A (en) * | 1981-04-02 | 1985-01-08 | Specht Victor J | Variable displacement gerotor pump |
| DE10047738A1 (en) * | 2000-09-27 | 2002-04-11 | Bosch Gmbh Robert | Internal gear pump |
| ITBO20020275A1 (en) | 2002-05-10 | 2003-11-10 | Pierburg Spa | VARIABLE FLOW ROTARY PUMP, IN PARTICULAR FOR OIL |
| DE10245814B3 (en) | 2002-10-01 | 2004-02-12 | SCHWäBISCHE HüTTENWERKE GMBH | Internal-gear pump e.g. for pumping engine oil has at least one recess in feet of external teeth extending to one endface of external teeth |
| JP4272112B2 (en) * | 2004-05-26 | 2009-06-03 | 株式会社日立製作所 | Motor-integrated internal gear pump and electronic equipment |
-
2008
- 2008-01-10 DE DE200810003843 patent/DE102008003843A1/en not_active Ceased
- 2008-11-19 EP EP08105827.3A patent/EP2078860B1/en not_active Expired - Fee Related
-
2009
- 2009-01-12 CN CN200910002903.2A patent/CN101482112B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2709678Y (en) * | 2004-06-19 | 2005-07-13 | 谢云海 | Gear sundstrand pump |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705119A (en) * | 2012-06-27 | 2012-10-03 | 无锡开普动力有限公司 | Transmission and connection structure of electrical control high pressure common rail pump |
| CN103516099A (en) * | 2012-06-27 | 2014-01-15 | 罗伯特·博世有限公司 | Commutation for power transmission in an electrical machine |
| CN103423575A (en) * | 2013-08-21 | 2013-12-04 | 安徽华菱汽车有限公司 | Gear-type engine oil pump |
| CN103423575B (en) * | 2013-08-21 | 2016-08-10 | 安徽华菱汽车有限公司 | A kind of gear type oil pump |
| CN104632615A (en) * | 2013-11-13 | 2015-05-20 | 马勒国际有限公司 | Pendulum slide cell pump |
| CN111520322A (en) * | 2019-02-04 | 2020-08-11 | 施瓦本冶金工程汽车有限公司 | Internal gear pump |
| CN111520322B (en) * | 2019-02-04 | 2022-04-19 | 施瓦本冶金工程汽车有限公司 | Internal gear pump |
| CN110925471A (en) * | 2019-12-10 | 2020-03-27 | 上海廷本流体控制有限公司 | Low-temperature stop valve |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2078860B1 (en) | 2015-09-30 |
| DE102008003843A1 (en) | 2009-07-16 |
| EP2078860A2 (en) | 2009-07-15 |
| EP2078860A3 (en) | 2014-05-28 |
| CN101482112B (en) | 2014-11-05 |
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