CN2251051Y - Stable four-cylinder radial plunger oil pump - Google Patents
Stable four-cylinder radial plunger oil pump Download PDFInfo
- Publication number
- CN2251051Y CN2251051Y CN 95234764 CN95234764U CN2251051Y CN 2251051 Y CN2251051 Y CN 2251051Y CN 95234764 CN95234764 CN 95234764 CN 95234764 U CN95234764 U CN 95234764U CN 2251051 Y CN2251051 Y CN 2251051Y
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- rotor
- utility
- plunger
- model
- spindle
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Abstract
The utility model relates to a stable four-cylinder radial plunger oil pump which comprises a spindle (1), a rotor (3), a front cover (6), a back cover (2), a plunger (7), an end cover (5), a spring (8) and a steel ball (9). The utility model is characterized in that the spindle (1) is square, and cylinder bodies are respectively arranged at the diagonal directions of the spindle, a wheel which is composed of an Archimedes' spiral line is fixed on a shaft of the rotor (3), and both ends of the Archimedes' spiral line are symmetric. The utility model evenly and smoothly discharges oil, has no pulsation phenomena. The utility model has the advantages of simple structure, small radial size, compact structure, beautiful appearance, low cost, convenient installation, high rotary speed, high volume efficiency, high pressure and long service life.
Description
The utility model relates to a kind of pump, more specifically to a kind of radial plunger pump that is used for liquid.
Plunger-type fuel pump is because good seal performance, the pressure height, and be widely used in the hydraulic system, no matter existing oil pump is axial piston pump or radial plunger pump, the number of its oil cylinder all adopts odd number, and the number of oil cylinder can not be pulsed because the odd number oil cylinder can reduce the sine wave of oil pump output fluid very little, but it can not fundamentally remove pulsation.Concerning plunger-type fuel pump radially, adopt the odd number oil cylinder also can make its structure become complicated, weight strengthens, and radial dimension increases greatly, and moulding is compact inadequately.
The purpose of this utility model provides a kind of steady four cylinder diameters to plunger-type fuel pump, and it can remedy the above-mentioned deficiency of existing radial plunger oil pump.
The utility model mainly comprises spindle, rotor, protecgulum, bonnet, plunger, end cap, spring and steel ball, it is characterized in that spindle is square, diagonal at it is respectively adorned a cylinder body, fixes a wheel that is made of the Archimedes spiral of two sections symmetries on the axle of rotor.
The utility model oil extraction uniform and stable pulsating movement free phenomenon, and simple in structure, radial dimension is little, and compact structure is handsome in appearance, and cost is low, and is easy for installation, the rotating speed height, the volumetric efficiency height, the pressure height, the life-span is long.
Further specify the utility model below by embodiment and accompanying drawing.
Accompanying drawing 1 is a structural representation of the present utility model.
Accompanying drawing 2 is its A-A-A sectional drawing.
The utility model mainly is made up of spindle (1), rotor (3), protecgulum (6), bonnet (2), plunger (7), end cap (5), spring (8) and steel ball (9), wherein spindle (1) is square, there is a cylindrical cavity body centre, on four angles of its diagonal, respectively adorn a cylinder body, totally 4 cylinder bodies, this is first structural feature of the present utility model.Plunger (7) and piston spring (8) all are housed in each cylinder body.Fix the wheel of the Archimedes spiral formation of a two ends symmetry on the axle of rotor (3), therefore the variation that this utmost point of taking turns footpath is directly proportional along with the corner variation of wheel can be described as direct ratio and takes turns.This is second structural feature of the present utility model.When rotor (3) rotates, the direct ratio wheel promotes plunger (7) and does at the uniform velocity ascending motion or do at the uniform velocity descending motion under the effect of piston spring (8), in 180 ° of scopes, the every instantaneous speed of plunger all equates, thereby this oil pump oil mass of discharging uniform and stable always.Protecgulum of this oil pump (6) and bonnet (2) all are equipped with rotor bearing flow oil duct and fuel tap, and blade (4) is housed in the cavity of bonnet (2), the latter is fixed on the axle of rotor (3), blade (4) together rotates with rotor (3), to improve the suction capacity of this oil pump, improve rotating speed, enlarge its using scope.In addition, the kinematic pair between plunger (7) and direct ratio wheel has also adopted the sub-roller in unit, thereby has reduced friction, has improved the mechanical efficiency and the working life of this oil pump.
Claims (3)
1. steady four cylinder diameters are to plunger-type fuel pump, comprise spindle (1), rotor (3), protecgulum (6), bonnet (2), plunger (7), end cap (5), spring (8) and steel ball (9), it is characterized in that spindle (1) is square, diagonal at it is respectively adorned a cylinder body, fixes a wheel that is made of the Archimedes spiral of two ends symmetry on the axle of rotor (3).
2. oil pump as claimed in claim 1 is characterized in that on described protecgulum (6) and bonnet (2) rotor bearing flow oil duct and fuel tap being housed all, and blade (4) is housed in the cavity of bonnet (2), and the latter is fixed on the axle of rotor (3).
3. oil pump according to claim 1 is characterized in that the kinematic pair between described plunger (7) and the direct ratio wheel has adopted the sub-roller in unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95234764 CN2251051Y (en) | 1995-10-03 | 1995-10-03 | Stable four-cylinder radial plunger oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95234764 CN2251051Y (en) | 1995-10-03 | 1995-10-03 | Stable four-cylinder radial plunger oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2251051Y true CN2251051Y (en) | 1997-04-02 |
Family
ID=33878601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95234764 Expired - Fee Related CN2251051Y (en) | 1995-10-03 | 1995-10-03 | Stable four-cylinder radial plunger oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2251051Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338747B (en) * | 2008-08-12 | 2010-06-02 | 胡东文 | Double oil path vane pump /motor |
-
1995
- 1995-10-03 CN CN 95234764 patent/CN2251051Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338747B (en) * | 2008-08-12 | 2010-06-02 | 胡东文 | Double oil path vane pump /motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |