CN201757041U - Duplex axial plunger pump - Google Patents
Duplex axial plunger pump Download PDFInfo
- Publication number
- CN201757041U CN201757041U CN2010202866595U CN201020286659U CN201757041U CN 201757041 U CN201757041 U CN 201757041U CN 2010202866595 U CN2010202866595 U CN 2010202866595U CN 201020286659 U CN201020286659 U CN 201020286659U CN 201757041 U CN201757041 U CN 201757041U
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- China
- Prior art keywords
- pump
- plunger pump
- pressure plunger
- pressure
- low
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- Expired - Fee Related
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Abstract
The utility model discloses a duplex axial plunger pump, which comprises a pump casing, a transmission camshaft and two plunger pumps. Two ends of the transmission camshaft are mounted in the pump casing via bearings, the two plunger pumps including a high-pressure plunger pump and a low-pressure plunger pump can be in connected transmission via the same transmission camshaft, and mounting axes of the high-pressure plunger pump and the low-pressure plunger pump are perpendicular to the axis of the transmission camshaft and located on two sides of a cam. The duplex axial plunger pump using the same transmission camshaft to realize connected transmission is high in operation accuracy, simple in structure and small in volume. A loop consisting of the high-pressure plunger pump and the low-pressure plunger pump is high in efficiency and applicable to fast forward of actuator elements and occasions with higher feeding speed difference, and achieves fine effect.
Description
Technical field
The utility model relates to pump, especially a kind of duplex axial piston pump.
Background technique
In the prior art, the occasion of two pumps need be set, normally with the parallel connection of pumps setting of two platform independent, every pump all control oneself independently fluid intake, liquid outlet and power input device, this two pumps independent design complex structure, volume is big, makes the installation cost height; Also there is a few cases to use duplex pump, for example Chinese patent CN2247728Y provides a kind of diclinic dish duplex axial piston pump, the duplex pump that this patent provides, transmission shaft and two plunger pumps are arranged in parallel, increased pump housing manufacture difficulty, and the oil pressure that two plunger pumps in this patent provide is identical, just more single pump has increased flow, do not distinguish high-pressure service pump and low pressure pump, this has just limited the using scope of duplex pump.
The model utility content
Technical assignment of the present utility model is at not enough in the above-mentioned technology, and a kind of simple in structure, volume is little and circuit efficiency that constituted is high duplex axial piston pump is provided.
The technological scheme that the utility model technical solution problem is adopted is: a kind of duplex axial piston pump, comprise pump case, the driving cam axle, two plunger pumps, in pump case, described two plunger pumps use same driving cam axle to connect transmission by Bearing Installation at driving cam axle two ends, and described two plunger pumps are respectively high-pressure plunger pump and low-pressure plunger pump, high-pressure plunger pump, low-pressure plunger pump are installed axis perpendicular to the driving cam axis, and are positioned at the cam portion both sides.
The beneficial effect that the utility model can bring is:
One, described duplex axial piston pump uses same driving cam axle to connect transmission, the running accuracy height, and simple in structure, volume is little.
Two, two plunger pumps are respectively high-pressure plunger pump and low-pressure plunger pump, by the circuit efficiency height that it constituted, are applicable to that executive component F.F. and work speed differ bigger occasion, and are respond well.
Three, manufacturing, installation cost are low, are convenient to promote.
Description of drawings
Fig. 1, the utility model overall structure schematic representation.
Fig. 2, the utility model overall structure schematic representation A-A sectional view.
Fig. 3, the utility model oil extraction one-way valve partial sectional view.
Embodiment
Below in conjunction with accompanying drawing, the utility model is done following detailed description:
As Fig. 1, Fig. 2 and shown in Figure 3, pump case 1, driving cam axle 2, high-pressure service pump volute spring 3, oil extraction one-way valve 4, end cap 5, seal ring 6, the end stifled 7, oil sucting one-way valve spring 8, spring stop piece 9, spool 10, high-pressure service pump plunger 11, low pressure pump volute spring 12, filler opening 13, low pressure pump plunger 14, the pump housing 15, O RunddichtringO 16, oil extraction one-way valve stifled 17, polytetrafluoroethylsealed sealed circle 18, steel ball 19, O RunddichtringO 20, oil extraction check valve spring 21, pressure adjusting lever 22, pump case oil outlet 23, oil extraction one-way valve oil outlet 24, polytetrafluoroethylsealed sealed circle 25, end cap 26, power input shaft attachment hole 27, bearing 28, balancer weight 29, oil extraction one-way valve valve body 30.
Its structure of duplex axial piston pump that the utility model is announced is made up of pump case 1, driving cam axle system, high-pressure plunger pump, low-pressure plunger pump, bearing 28, oil extraction one-way valve 4.
The driving cam axle system is made up of driving cam axle 2, balancer weight 29, bearing 28, balancer weight 29 is installed on the driving cam axle 2, cooperate by the cam edge of seam with driving cam axle 2, bearing 28 is installed in the two ends of driving cam axle 2 respectively, and the driving cam axle 2 that bearing 28 and balancer weight 29 are installed is installed in the pump case 1 transmission shaft mounting hole by bearing 28.
High-pressure plunger pump is stifled 7 by high-pressure service pump plunger 11, high-pressure service pump volute spring 3, the pump housing 15, the end, spool 10, oil sucting one-way valve spring 8 and spring stop piece 9 are formed, and the pump housing 15 1 sides are provided with oil outlet and are communicated with oil extraction one-way valve mounting hole.
The low-pressure plunger pump is stifled 7 by low pressure pump plunger 14, low pressure pump volute spring 12, the pump housing 15, the end, spool 10, oil sucting one-way valve spring 8 and spring stop piece 9 are formed, and the pump housing 15 1 sides are provided with oil outlet and are communicated with oil extraction one-way valve mounting hole.
Oil extraction one-way valve 4 is made up of steel ball 19, oil extraction check valve spring 21, pressure adjusting lever 22, oil extraction one-way valve valve body 30.
The driving cam axle system is positioned at high-pressure plunger pump, between the plunger of low-pressure plunger pump, and high-pressure plunger pump, the plunger and the cam of low-pressure plunger pump hold, high-pressure plunger pump, the low-pressure plunger pump is installed axis perpendicular to the driving cam axis, and be positioned at the cam portion both sides, high-pressure plunger pump, the low-pressure plunger pump uses same driving cam axle 2 to connect transmission, high-pressure plunger pump, the oil absorbing end outside of low-pressure plunger pump is by end cap 5 and seal ring 6 and pump case 1 shutoff, high-pressure plunger pump, fixing the pass through pump housing 15 of low-pressure plunger pump in mounting hole cooperates realization with mounting hole sidewall and oil extraction one-way valve 4 with the oil drainage hole of two pumps.
Driving cam axle system power input side bearing 28 is supported by end cap 26, and end cap 26 is fixing with pump case 1 by being threaded, polytetrafluoroethylsealed sealed circle 25 sealings between end cap 26 and the pump case 1.
Working principle:
Outer power input shaft is connected with driving cam axle 2 with key by power input shaft attachment hole 27, when outer power input shaft rotates, the rotation of driving cam axle system, as shown in Figure 1, low-pressure plunger 14 is move left and right under the effect of drive cam shaft 2 overhead cams and low pressure pump spring 12, when low-pressure plunger 14 moves right, the seal space that the plunger 14 and the pump housing 15 are formed becomes big, form vacuum, fluid in the oil sump sucks through in line check valve under the barometric pressure effect, and seal space diminishes when the driving cam axle system promotes low-pressure plunger 14 to left movement, and the oil that has sucked is squeezed, be discharged in the hydraulic system through fuel-displaced plug-in mounting one-way valve and go, the driving cam axle system constantly moves, and seal space periodically diminishes and increases, and finishes oil suction and oil extraction.High pressure one lateral movement situation is identical with low pressure one side, is the on high-tension side exactly oil extraction process of oil-absorbing process of low voltage side, and the oil extraction process of low voltage side is on high-tension side oil-absorbing process.
Claims (1)
1. duplex axial piston pump, comprise pump case, the driving cam axle, two plunger pumps, driving cam axle two ends, is characterized in that in pump case by Bearing Installation: described two plunger pumps use same driving cam axle to connect transmission, and described two plunger pumps are respectively high-pressure plunger pump and low-pressure plunger pump, high-pressure plunger pump, low-pressure plunger pump are installed axis perpendicular to the driving cam axis, and are positioned at the cam portion both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202866595U CN201757041U (en) | 2010-08-05 | 2010-08-05 | Duplex axial plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202866595U CN201757041U (en) | 2010-08-05 | 2010-08-05 | Duplex axial plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201757041U true CN201757041U (en) | 2011-03-09 |
Family
ID=43644312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202866595U Expired - Fee Related CN201757041U (en) | 2010-08-05 | 2010-08-05 | Duplex axial plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201757041U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104432A (en) * | 2013-02-28 | 2013-05-15 | 上海舜宇恒平科学仪器有限公司 | Liquid chromatograph constant flow pump |
-
2010
- 2010-08-05 CN CN2010202866595U patent/CN201757041U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104432A (en) * | 2013-02-28 | 2013-05-15 | 上海舜宇恒平科学仪器有限公司 | Liquid chromatograph constant flow pump |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110309 Termination date: 20160805 |