CN2900865Y - Inside engaged gear pump - Google Patents
Inside engaged gear pump Download PDFInfo
- Publication number
- CN2900865Y CN2900865Y CN 200620070868 CN200620070868U CN2900865Y CN 2900865 Y CN2900865 Y CN 2900865Y CN 200620070868 CN200620070868 CN 200620070868 CN 200620070868 U CN200620070868 U CN 200620070868U CN 2900865 Y CN2900865 Y CN 2900865Y
- Authority
- CN
- China
- Prior art keywords
- crescent
- gear
- pump
- shaped separator
- ring 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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Abstract
The utility model relates to an inner gearing wheel pump comprising a transmission shaft, a pump body, a pair of mutual inner gearing pinion and an inner gear ring, a crescent demarcation strip, a ventro-plate, a posterior lateral plate or the like, wherein the crescent demarcation strip disposed between the pinion and the inner gear ring forms two unaided close space between the draw oil reservoir and the press oil reservoir, two ends of the crescent demarcation strip is disposed in the crescent groove of the ventro-plate and the posterior lateral plate, the right position of the crescent demarcation strip relative to the pinion and the inner gear ring is located by two straight pins. The utility model has the advantages of simple structure, steady delivery pressure, small fret; and the reduced inner gearing wheel pump manufacture problem.
Description
Technical field
The utility model belongs to the fluid machinery technical field, is specifically related to a kind of crescent gear pump.
Background technique
Crescent gear pump is usually by the pump housing A of band endoporus, the ring gear B that in pump housing endoporus, rotates, and with the small gear C of ring gear engagement, parts such as the crescent shape divider D between ring gear and the small gear are formed, and structure is seen Fig. 1.Because the effect of crescent-shaped separator forms two enclosed spaces---oil sucting cavity and pumping cavity between small gear and the ring gear.Ring gear is also with the equidirectional rotation when the direction of arrow rotate when transmission shaft drives small gear by key, because the variation of oil sucting cavity and pumping cavity volume is brought into oil by oil sucting cavity, pumping cavity is discharged, and realizes the oily process of pump.The crescent gear pump of prior art is a kind of to be that the crescent shape divider and the pump housing are processed into integral body, complex process, and difficulty of processing is big.Another kind is that a side of crescent shape divider adopts straight pin to be positioned on the pump housing, installation strength is low, be not suitable in high-pressure service pump, adopting this method, need to increase the position of thickness to guarantee that straight pin is installed of swing link simultaneously, thereby influence the compactedness of the structure of oil pump.
Summary of the invention
The purpose of this utility model is exactly in order to address the above problem, and provides a kind of simple in structure, processing easily, but the inside engaged gear pump structure of high pressure output oil.
The purpose of this utility model is by changing pump body structure, reaching from the purpose of two ends installing and locating crescent-shaped separator, referring to Fig. 2, shown in Figure 3.Its structure constituent element and existing gear pump are different, that is: by the pump housing 8 that contains endoporus, the ring gear 9 that can in endoporus, rotate, and the small gear 10 of ring gear 9 engagements, drive the crescent-shaped separator 7 between transmission shaft 1, small gear 10 and the ring gear 9 that small gear 10 rotates and fixedly the front side plate 6, back side panel 11 etc. at crescent-shaped separator two ends are formed.Front side plate 6, back side panel 11 are provided with the crescent-shaped separator groove, see Fig. 4, shown in Figure 5.Front side plate 6 back side panels 11 and crescent-shaped separator 7 become two independently Seal cages---oil sucting cavity and pumping cavity with the separated by spaces between small gear 10 and the ring gear 9.Be provided with annular distributing groove with the adjacent side plate of oil inlet and outlet, see shown in Figure 5.The annular distributing groove communicates with the enterprising oil outlet of pump cover.
Crescent-shaped separator 7 utilizes its up and down gap of arc-shaped surface (seeing shown in Figure 6) and small gear and ring gear tooth top, utilizes on demarcation strip two ends and the forward and backward side plate crescent-shaped separator groove again and utilizes the demarcation strip both ends of the surface and oil pump protecgulum, the gap realization oil sucting cavity of bonnet interior edge face and the sealing of pumping cavity.The material of forward and backward side plate and crescent-shaped separator can be selected high-abrasive material for use, and the parts depreciation that reduces in the working procedure guarantees reliable sealing simultaneously again.
In the utility model crescent gear pump, adopt five slice structures, that is: protecgulum 5, front side plate 6, the pump housing 8, back side panel 11, bonnet 13.Each sheet relative position adopts two straight pins, 12 location.
In the utility model crescent gear pump, also can adopt the three pieces type structure, see shown in Figure 7.That is: protecgulum A5, pump housing A8 bonnet A13.Each sheet relative position adopts the straight pin location.Wherein processing crescent-shaped separator groove on protecgulum A5, bonnet A13 interior edge face is provided with the sealing that rubber gasket A18 guarantees the crescent-shaped separator two ends in the groove.
The utility model crescent gear pump has the oil motor function, injects high pressure oil at oil sucting cavity, then specified rotating speed and the torque of transmission shaft output.
Description of drawings
Fig. 1 is the prior art structural drawing
Fig. 2 is the general structure distribution map
Fig. 3 is the A-A sectional view of Fig. 2
Fig. 4 is the structural drawing that does not have the side plate of annular distributing groove
Fig. 5 is the structural drawing that the side plate of annular distributing groove is arranged
Fig. 6 is the structural drawing of crescent-shaped separator
Fig. 7 is the structural drawing of three pieces type crescent gear pump
Label among Fig. 2: 1 is transmission shaft, and 2 is seal ring, and 3 is the flange circle, 4 is bearing shell, and 5 is protecgulum, and 6 is front side plate, 7 is crescent-shaped separator, and 8 is the pump housing, and 9 is ring gear, 10 is small gear, and 11 is back side panel, and 12 is straight pin, 13 is bonnet, and 14 is back-up ring, and 15 is stifle, 16 is O-ring seals, and 17 is screw;
Label among Fig. 7: A5 is the protecgulum that is provided with the crescent-shaped separator groove, and A8 is the pump housing, and A13 is the bonnet that is provided with the crescent-shaped separator groove, and A18 is a rubber gasket.
Embodiment
Specifically describe the utility model below by embodiment
Fig. 2 Fig. 3 represents an embodiment of model utility, and the length of crescent shape isolating plate equals the thickness sum of front side plate, the pump housing, back side panel.The small gear of crescent gear pump is connected with transmission shaft by flat key, and transmission shaft is bearing in respectively in the hole of protecgulum, bonnet by bearing shell.The two ends of transmission shaft have flange circle, seal ring and stifle to seal.The axial float of back-up ring restriction transmission shaft.Protecgulum, bonnet, front side plate, the pump housing, back side panel and bonnet are located by connecting with straight pin and are integral.Ring gear is positioned in the pump housing endoporus and pinion.Be provided with annular distributing groove with the adjacent side plate of oil inlet and outlet, annular distributing groove communicates with the enterprising oil outlet of pump cover.Crescent-shaped separator is inserted in respectively by two ends in the crescent moon board slot of front side plate and back side panel between the gear teeth of ring gear and small gear.Guaranteed that the sealing of turnover oil pocket has guaranteed the installation strength of crescent-shaped separator again, helps improving the delivery pressure of oil pump.
Claims (3)
1. crescent gear pump: by the pump housing of band endoporus, the ring gear that can in endoporus, rotate, small gear with the ring gear engagement, drive the transmission shaft of pinion rotation, crescent-shaped separator between small gear and the ring gear, be provided with the fixedly front side plate of crescent-shaped separator groove, back side panel and protecgulum, bonnet is formed, swing link shape demarcation strip and front side plate, back side panel becomes small gear that two independently Seal cages---oil sucting cavity and pumping cavity is characterized in that with separated by spaces between the ring gear: in the pump housing both sides position that the crescent-shaped separator groove is used for fixing crescent-shaped separator is set.
2. crescent gear pump according to claim 1 is characterized in that: on the side plate adjacent with the turnover oilhole annular distributing groove is set, annular distributing groove communicates with the turnover oilhole.
3. it is characterized in that according to right 1 described crescent gear pump: the thickness of the pump housing equates with the thickness of ring gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620070868 CN2900865Y (en) | 2006-03-31 | 2006-03-31 | Inside engaged gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620070868 CN2900865Y (en) | 2006-03-31 | 2006-03-31 | Inside engaged gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2900865Y true CN2900865Y (en) | 2007-05-16 |
Family
ID=38085028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620070868 Expired - Fee Related CN2900865Y (en) | 2006-03-31 | 2006-03-31 | Inside engaged gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2900865Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793249A (en) * | 2008-12-09 | 2010-08-04 | 罗伯特·博世有限公司 | Gear pump |
| CN102022319A (en) * | 2010-12-02 | 2011-04-20 | 湖南机油泵股份有限公司 | Oil pump with inside engaged gear |
| CN102588271A (en) * | 2012-03-06 | 2012-07-18 | 佛山市顺德区中意液压有限公司 | Straight-line conjugated inside engaged gear pump provided with separating gear cylinder and machining method thereof |
| CN103291609A (en) * | 2012-02-24 | 2013-09-11 | 常州大学 | Biaxial harmonic gear pump |
| CN106943682A (en) * | 2017-04-07 | 2017-07-14 | 南京信息职业技术学院 | Hydraulic pump type damping reciprocating lifesaving descent control device |
| CN108612620A (en) * | 2018-06-19 | 2018-10-02 | 佛山市顺德区中意液压有限公司 | A kind of compact high efficient oil distribution mechanism for radial plunger type motor |
-
2006
- 2006-03-31 CN CN 200620070868 patent/CN2900865Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793249A (en) * | 2008-12-09 | 2010-08-04 | 罗伯特·博世有限公司 | Gear pump |
| CN102022319A (en) * | 2010-12-02 | 2011-04-20 | 湖南机油泵股份有限公司 | Oil pump with inside engaged gear |
| CN103291609A (en) * | 2012-02-24 | 2013-09-11 | 常州大学 | Biaxial harmonic gear pump |
| CN103291609B (en) * | 2012-02-24 | 2016-01-20 | 常州大学 | Biaxial harmonic gear pump |
| CN102588271A (en) * | 2012-03-06 | 2012-07-18 | 佛山市顺德区中意液压有限公司 | Straight-line conjugated inside engaged gear pump provided with separating gear cylinder and machining method thereof |
| CN102588271B (en) * | 2012-03-06 | 2014-12-31 | 佛山市顺德区中意液压有限公司 | Straight-line conjugated inside engaged gear pump provided with separating gear cylinder and machining method thereof |
| CN106943682A (en) * | 2017-04-07 | 2017-07-14 | 南京信息职业技术学院 | Hydraulic pump type damping reciprocating lifesaving descent control device |
| CN108612620A (en) * | 2018-06-19 | 2018-10-02 | 佛山市顺德区中意液压有限公司 | A kind of compact high efficient oil distribution mechanism for radial plunger type motor |
| CN108612620B (en) * | 2018-06-19 | 2023-11-03 | 佛山市顺德区中意液压有限公司 | Compact efficient oil distribution mechanism for radial plunger hydraulic motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070516 Termination date: 20100331 |