CN2771509Y - Circular piston displacement pump - Google Patents
Circular piston displacement pump Download PDFInfo
- Publication number
- CN2771509Y CN2771509Y CN 200420122574 CN200420122574U CN2771509Y CN 2771509 Y CN2771509 Y CN 2771509Y CN 200420122574 CN200420122574 CN 200420122574 CN 200420122574 U CN200420122574 U CN 200420122574U CN 2771509 Y CN2771509 Y CN 2771509Y
- Authority
- CN
- China
- Prior art keywords
- displacement pump
- piston
- cylindrical shaft
- cylindrical
- shaft hole
- 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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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The utility model relates to a circular piston displacement pump, which is a displacement pump used on a refrigerant compressor, an air compressor, a vacuum air pump and a hydraulic pump. The displacement pump has the technical scheme that a cylindrical shaft hole is arranged on a cylinder piston; the centerline of the cylindrical shaft hole is in parallel with the centerline of the cylinder piston, and both of the centerlines deviate from each other by a certain distance; a cylindrical shaft hole is arranged on a driving rotating shaft; the centerline of the cylindrical shaft hole is in parallel with the centerline of the driving rotating shaft, and both of the centerlines deviate from each other by a certain distance; a cylindrical shaft pin is used for connecting the cylindrical shaft hole arranged on the driving rotating shaft and the cylindrical shaft hole arranged on the cylinder piston together; therefore, a volume change mechanism is formed. The novel circular piston displacement pump without a crank shaft connecting rod mechanism melts the advantages of both a reciprocating piston type displacement pump and a rolling piston type displacement pump, and solves the problems of complicated structure and low rotating speed of the reciprocating piston type displacement pump, and the problem of low utilization rate of a rolling piston type displacement pump. Meanwhile, the piston of the utility model have a certain rotational freedom. The problem of large frictional abrasion can be solved.
Description
Technical field the utility model displacement pump is to be applied to refrigeration compressor, air compressor, vacuum pump, the displacement pump of oil hydraulic pump.
Background technique is present, and all there is shortcoming separately in widely used two kinds of displacement pumps, and reciprocating piston type is to drive by connecting rod, makes complex structure, and volume is big, and rotating speed is low.Rolling-piston-type is simple in structure, and volume is little, the rotating speed height, but capacity utilization is low.
The summary of the invention the purpose of this utility model provides a kind of novel circular piston displacement pump without connecting rod, it has merged the advantage of reciprocating piston type and rolling-piston-type displacement pump, reciprocating piston type displacement pump complex structure, rotating speed is low and rolling-piston-type displacement pump capacity utilization is low problem have been solved, allow piston that certain rotational freedom is arranged simultaneously, solved the big problem of fretting wear.
The technological scheme that its technical problem that solves the utility model adopts is: 1, cylinder adopt cuboid to superpose up and down spatial volume that semicylinder forms; 2, piston adopts cylindrical body, and its radius equals the radius of cylinder semicylinder; 3, open a cylindrical axis hole on the cylindrical body piston, the cylindrical shaft centerline hole is parallel to cylindrical body piston center line and departs from certain distance; 4, open a cylindrical axis hole in the driving rotating shaft, the cylindrical shaft centerline hole is parallel to the driving shaft centerline and departs from certain distance; 5, the cylindrical body piston is placed in the cylinder, cylindrical body piston center line is parallel with cylinder semicylinder center line, with a cylinder pivot pin the cylindrical axis hole of opening on cylindrical axis hole of opening in the driving rotating shaft and the cylindrical body piston is connected together; 6, cylinder block and cylindrical body piston and front and rear cover surround two sealed space, are respectively upper gas chamber and lower air chamber; When 7, driving the rotating shaft rotation, move the cylinder pivot pin around driving the shaft centerline rotation by the cylindrical shaft pore area that drives in the rotating shaft, the cylinder pivot pin drives the cylindrical body piston again and moves up and down in cylinder, and the volume of upper gas chamber and lower air chamber is periodically changed; 8, the volume of air cavity changes from small to big and just finishes air-breathing work, and the volume of air cavity is just finished compression and exhaust work from large to small, drives rotating shaft and whenever revolves and turn around, and that upper and lower air cavity is respectively finished once is air-breathing, compression and exhaust work, from mechanism's motion diagram 3, O
2Around O
1Rotation, and drive O
3To-and-fro motion; 9, cylinder block can horizontally or vertical be put.
The beneficial effects of the utility model are: simple in structure, volume is little, and it is convenient to drive, the capacity utilization height, and fretting wear is little, working life.
Description of drawings further specifies main parts size and the assembly relation that the utility model relates to below in conjunction with accompanying drawing.
Fig. 1 is the front elevation that removes front cover,
Fig. 2 is the A-A sectional drawing, and part 1 is the cylindrical body piston, and part 2 is a cylinder block, and part 3 is a rear end cover, and part 4 is a front cover, and part 5 is the front wheel driving rotating shaft, and part 6 is the rear driving rotating shaft, and part 7 is the cylinder pivot pin,
Fig. 3 is a kinematic sketch of mechanism, O
1For driving rotating shaft core, O
2Be the cylinder axis bearing pin heart, O
3Be the cylindrical body piston axes.
Embodiment is determined the radius R (also being the radius of cylindrical body piston) of cylinder semicylinder earlier by Fig. 1 structure, the cylinder width does not limit, general desirable 0.8R, cylinder pivot pin radius does not limit, general desirable 0.1R, the long radius that drives rotating shaft does not limit general desirable 0.8R, press Fig. 3, the top dead center position of cylinder is by O
1O
2O
33 sizes when being linked to be not overlapping straight line determine the bottom dead center position of 1 cylinder by O
1O
2O
33 size decisions when being linked to be overlapping straight line are again by the selected voluntarily O of the upper and lower dead-centre position of cylinder
1O
2Throw of eccentric, on cylinder lower semi-circle radially drive into, exhaust port, mate forward and backward end cap again, have above-mentioned definite size both can process main parts size, assemble out agent structure by Fig. 2.
Claims (1)
- A kind of novel circular piston displacement pump, mainly by the cylindrical body piston, drive rotating shaft, the gentle cylinder of cylinder pivot pin is formed variable displacement pump, it is characterized in that: on the cylindrical body piston, open a cylindrical axis hole, the cylindrical shaft centerline hole is parallel to cylindrical body piston center line and departs from certain distance, in the driving rotating shaft, open a cylindrical axis hole, the cylindrical shaft centerline hole is parallel to the driving shaft centerline and departs from certain distance, with a cylinder pivot pin the cylindrical axis hole of opening on cylindrical axis hole of opening in the driving rotating shaft and the cylindrical body piston is connected together, thus the volume-variation mechanism of Zu Chenging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420122574 CN2771509Y (en) | 2004-12-16 | 2004-12-16 | Circular piston displacement pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420122574 CN2771509Y (en) | 2004-12-16 | 2004-12-16 | Circular piston displacement pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2771509Y true CN2771509Y (en) | 2006-04-12 |
Family
ID=36705297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420122574 Expired - Fee Related CN2771509Y (en) | 2004-12-16 | 2004-12-16 | Circular piston displacement pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2771509Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022087922A1 (en) * | 2020-10-28 | 2022-05-05 | 瑞立集团瑞安汽车零部件有限公司 | Positive-displacement air compressor |
-
2004
- 2004-12-16 CN CN 200420122574 patent/CN2771509Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022087922A1 (en) * | 2020-10-28 | 2022-05-05 | 瑞立集团瑞安汽车零部件有限公司 | Positive-displacement air compressor |
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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 |