CN202402284U - External gearing multi-functional gear pump - Google Patents
External gearing multi-functional gear pump Download PDFInfo
- Publication number
- CN202402284U CN202402284U CN2011204713546U CN201120471354U CN202402284U CN 202402284 U CN202402284 U CN 202402284U CN 2011204713546 U CN2011204713546 U CN 2011204713546U CN 201120471354 U CN201120471354 U CN 201120471354U CN 202402284 U CN202402284 U CN 202402284U
- Authority
- CN
- China
- Prior art keywords
- gear
- driven
- gear pump
- driving gear
- drive gear
- 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.)
- Expired - Fee Related
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- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model discloses an external gearing multi-functional gear pump. The external gearing multi-functional gear pump comprises a drive gear which is driven by a drive shaft and is positioned in the center, a plurality of driven gears which are distributed on the circumference of the drive gear and are meshed with the drive gear, and an external shell; the driven gears are positioned in recesses of the shell; the positions of the two sides of each recess, which are contacted with the drive gear are provided with arc notches to ensure that oil inlet space and oil outlet space are formed among the drive gear, the driven gears and the shell; and two sides of each driven gear are provided with a low press oil inlet are and a high pressure oil outlet area respectively. A product has the advantages of high practicability, large flow, high pressure, small size and stable oil pressure.
Description
Technical field
The utility model relates to a kind of outer gearing multiaction gear pump, is widely used in various fields such as shipbuilding, automobile, building, machinery, electronics, chemical industry, art designing, light textile.
Background technique
Along with modern continuous development, multiple improvement has been carried out in the extensive use of hydraulics on the basis of existing equipment, as:
The patent No. 01802127.1 disclosed internal gear pump; The technological scheme that adopts is to have the gear ring of an interior part tooth and the small gear of an exterior portions tooth; This small gear in order to produce a kind of pumping action with this gear ring mating reaction, it is characterized in that this small gear is eccentric with respect to gear ring, can be bearing on the bearing termination with moving radially; And be provided with a device, so that particularly when engine starting, compensate the radial clearance R between small gear and the gear ring.
Number of patent application 200880017240.5 disclosed a kind of gear pumps, especially for servo steering device, it has: housing, the pump cover that in this housing, constitutes pump chamber and define this pump chamber, said pump cover is provided with the coating of noise elimination.
Number of patent application 200910246875.9 disclosed a kind of gear pumps, especially for the gear pump that in automotive hydraulic brake system, produces retardation pressure with anti-skidding control function.In known gear pump, the through hole that in pump case, is used for the live axle of gear pump is sealed by seal element.If gear pump is applied in the liquid first pressing, then this seal element will bear this first pressing and must be by relative configurations to seal this through hole effectively equally.The seal element that for this reason needs the costliness of the corresponding complicacy of structure.The present invention can realize the reducing of pressure load of seal element.Therefore the sealing element can construct with low costly and itself can also make very effectively the gear pump that is applied in first pressing to seal with respect to external environment condition.
Number of patent application 200680053080.0 discloses a kind of gear pump, and this gear pump is suitable for carrying high pressure, high viscosity fluid through using intermeshing helical gear.For this purpose, this gear pump comprises lead-in path, and this importing path is used for fluid from the shaft end side of discharging side guide gear axle hydrodynamic pressure is applied to the shaft end of said gear shaft, the end thrust that this fluid pressure balance is produced by helical gear.
The model utility content
The utility model also is the autonomous innovation of carrying out on the basis of existing technology, and a kind of outer gearing multiaction gear pump is provided.
The purpose of the utility model is to realize through following technological scheme:
A kind of outer gearing multiaction gear pump; Comprise by the driving gear that is positioned at the center of drive shaft, a plurality of driven gears and the outside housing that is distributed in the driving gear circumference and meshes with driving gear; The quantity of said driven gear is 4 to 6; Said driven gear is arranged in the depression of housing; And dual-side and driving gear position contacting at depression are respectively arranged with arc notch, so that form oil-feed and fuel-displaced space between driving gear, driven gear and the housing, the both sides of said driven gear are respectively low pressure oil-feed district and the fuel-displaced district of high pressure.
Provide kinetic energy to act on live axle by power equipment.The drive shaft driving gear produces torque force; Drive a plurality of driven gears, the two airtight cavity volumes that form between live axle internal tooth, driven gear and the housing, live axle drives the driven gear high speed rotating; Promptly zone of high pressure and low pressure area have been formed in the both sides of driven gear; Its each zone of high pressure communicates, and each low pressure area communicates, and increases flow.
The characteristics that this product has is practical, amount of flow is big, pressure is high, volume is little, oil pressure is steady.
Description of drawings
According to accompanying drawing and embodiment the utility model is done further explain below.
Fig. 1 is the structural drawing of the described outer gearing multiaction of the utility model embodiment gear pump.
Among the figure:
1, driving gear; 2, arc notch; 3, driven gear; 4, housing; 5, depression.
Embodiment
As shown in Figure 1; The described a kind of outer gearing multiaction gear pump of the utility model embodiment; Comprise that the quantity of said driven gear 3 is 4 to 6, also can be a plurality of by the driving gear that is positioned at the center 1 of drive shaft, a plurality of driven gears 3 and the outside housing 4 that is distributed in driving gear 1 circumference and meshes with driving gear 1; Said driven gear 3 is arranged in the depression 5 of housing 4; And dual-side and driving gear 1 position contacting at depression 5 are respectively arranged with arc notch 2, so that form oil-feed and fuel-displaced space between driving gear 1, driven gear 3 and the housing 4, the both sides of said driven gear 3 are respectively low pressure oil-feed district and the fuel-displaced district of high pressure.
Provide by power equipment and can act on live axle.Drive shaft driving gear 1 produces torque force; Drive a plurality of driven gear 3 rotations; Inside at shell 4 between driving gear 1 and the driven gear 3 forms two airtight cavity volumes, and the engagement of driving gear and driven gear makes the space, both sides of driven gear produce pressure difference.Because the effect of gear has changed direction, makes the in the opposite direction of driving gear and driven gear, form the zone of high pressure in squeeze side, opposite side forms low pressure area, and its each zone of high pressure communicates, and each low pressure area communicates, and increases flow.
The characteristics that this product has is practical, amount of flow is big, pressure is high, volume is little, oil pressure is steady.
Claims (2)
1. outer gearing multiaction gear pump; It is characterized in that; Comprise by the driving gear that is positioned at the center of drive shaft, a plurality of driven gears and the outside housing that is distributed in the driving gear circumference and meshes with driving gear; Said driven gear is arranged in the depression of housing; And dual-side and driving gear position contacting at depression are respectively arranged with arc notch, so that form oil-feed and fuel-displaced space between driving gear, driven gear and the housing, the both sides of said driven gear are respectively low pressure oil-feed district and the fuel-displaced district of high pressure.
2. outer gearing multiaction gear pump according to claim 1 is characterized in that, the quantity of said driven gear is 4 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204713546U CN202402284U (en) | 2011-11-23 | 2011-11-23 | External gearing multi-functional gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204713546U CN202402284U (en) | 2011-11-23 | 2011-11-23 | External gearing multi-functional gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202402284U true CN202402284U (en) | 2012-08-29 |
Family
ID=46699934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204713546U Expired - Fee Related CN202402284U (en) | 2011-11-23 | 2011-11-23 | External gearing multi-functional gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202402284U (en) |
-
2011
- 2011-11-23 CN CN2011204713546U patent/CN202402284U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20141123 |
|
| EXPY | Termination of patent right or utility model |