CN201635992U - Oil distribution tray of axial variable plunger pump - Google Patents
Oil distribution tray of axial variable plunger pump Download PDFInfo
- Publication number
- CN201635992U CN201635992U CN2010201121227U CN201020112122U CN201635992U CN 201635992 U CN201635992 U CN 201635992U CN 2010201121227 U CN2010201121227 U CN 2010201121227U CN 201020112122 U CN201020112122 U CN 201020112122U CN 201635992 U CN201635992 U CN 201635992U
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- oil distribution
- oil
- distribution casing
- triangular groove
- cylinder body
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- Expired - Fee Related
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Abstract
The utility model relates to an oil distribution tray of an axial variable plunger pump. When the existing plunger exerts pressure on oil in a cylinder inner hole and fills the oil in a pump cover high-pressure cavity, high-pressure oil in the cylinder inner hole does not completely enter the pump cover high-pressure cavity, some high-pressure oil is left in the cylinder inner hole, and the noise is large. On the matching plane of the oil tray and the oil cylinder, a triangular groove having an inclined angle of 10 degrees minus 15 seconds to 10 degrees plus 15 seconds with the plane is arranged at the end of a low pressure oil distribution port, and a triangular groove having an inclined angle of 11 degrees minus 15 seconds to 11 degrees plus 15 seconds with the plane is arranged at the end of a high pressure oil distribution port. Noise reduction purpose is achieved.
Description
Technical field
The utility model relates to a kind of axial variable plunger pump, relates in particular to a kind of Variable plunger pump oil distribution casing device.
Background technique
When existing structure plunger was finished the fluid pressurization and injected the work of pump cover hyperbaric chamber in cylinder inner bore, plunger endoporus high-voltage oil liquid was not all to enter the pump cover hyperbaric chamber, still residual high pressure oil.When plunger moment entered the oil suction district, plunger internal high pressure fluid compression shock of forming of release of pressure suddenly in oil sucting cavity can produce flow pulsation, increases the operating noise of axial deflection plunger.
See Fig. 2, existing oil distribution casing has adopted triangular groove design to reduce flow pulsation mostly, reduces noise.The triangular groove that is 6 ° of angles of inclination with the plane has been adopted in low pressure oil distribution port end, and the triangular groove that is 7 ° of angles of inclination with the plane has been adopted in high pressure oil distribution port end; The groove point of triangular groove is to the back gauge of oil distribution port, less than plunger endoporus 0.3mm; Triangular groove cross section angle is 60 °.
The problem that this design exists: the triangular groove channels designs is too little, and between oil-feed district to oil extraction district, cylinder body inner fluid pre-compression pressure is too big, between oil extraction district to oil-feed district, the residual high pressure oil liquid pressure discharges deficiency in the plunger hole, and big to the flow pulsation of variation in pressure, noise can be too high.
Summary of the invention
The utility model is adjusted the angle design of original oil distribution casing triangular groove by testing repeatedly at above-mentioned deficiency, has reached the purpose that reduces noise.
Axial variable plunger pump oil distribution casing device comprises swash plate, oil distribution casing between pump cover and cylinder body, and oil distribution casing high and low pressure oil distribution port goes out oil pocket with pump cover respectively, oil suction chamber is connected; Bottom, cylinder body 9 holes is a kidney slot, width is consistent with 9 bore dias, plunger is set in the cylinder body, oil distribution casing cooperates on the plane with cylinder body, from low pressure oil distribution port end the triangular groove that is 10 ° ± 15 ' angle of inclination with the plane is set, the triangular groove that is 11 ° ± 15 ' angle of inclination with the plane is set from high pressure oil distribution port end.
For better effect: 10 ° ± 15 ', the groove point of 11 ° ± 15 ' triangular groove is to the back gauge of oil distribution casing high and low pressure oil distribution port, less than cylinder body kidney slot width 2 ± 0.2mm.
Triangular groove cross section angle is 80 ° ± 15 ', root is designed to ￠ 4mm * 0.5mm semicircle orifice, as the pressure transition district of triangular groove and oil distribution casing oil duct.
Axial variable plunger pump oil distribution casing device materials is an alloyed copper.
The triangular groove that is 10 ° ± 15 ' angle of inclination with the plane has been adopted in low pressure oil distribution port end, because pump is to the self-priming effect of fluid, along with reducing gradually of volume, fluid in the interior cavity of plunger and cylinder body formation has been played the precompression effect, change 10 ° of angles of inclination, strengthened pre compressed magnitude.
After the high-voltage oil liquid that forms after the plunger compression work outputed to out oil pocket, plunger had endoporus, and plunger is not the cylinder base of working fully when work simultaneously, because high-voltage oil liquid is not discharged fully, remnants have high-voltage oil liquid in the plunger endoporus.The triangular groove that is 11 ° ± 15 ' angle of inclination with the plane has been adopted in high pressure oil distribution port end, make plunger turn to lower compression upwards pull up oil suction in, form with oil outlet and to be connected, pressure release is carried out in inside, avoided the generation of pressure surge.
The groove point of triangular groove is to the back gauge of oil distribution port, less than cylinder body kidney slot width 2 ± 0.2mm.Triangular groove cross section angle is 80 ° ± 15 ', root has been processed ￠ 4mm * 0.5mm semicircle orifice, as the pressure transition district of triangular groove and oil distribution casing oil duct.Make plunger turn to lower compression upwards pull up oil suction in, the plunger endoporus does not form the region of no pressure with turnover oil pocket road, the flow pulsation that has formed when having avoided moment to enter turnover oil pocket road.
Through experiment showed, above-mentioned parameter adjustment, the level of noise that flow pulsation is caused has tangible change.
Survey report
Inspection content: oil distribution casing triangular groove angle is to the influence of noise
Inspection equipment:
Oil hydraulic pump speed change test bench: 75KW ISO B level
Noise level monitor 7ES 1350A
Resistance strain type pressure sensor CY-YB-03
1.5 grades of 0-400bar of pressure gauge Y150-40
Turbine flux transmitter CL-15
0～100 ° of digital thermometer
Oil distribution casing triangular groove angle is to the data logger that influences of noise:: unit: dB (A)
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is the plunger pump structural representation
Fig. 2 is original oil distribution casing structural representation
Fig. 3 is the utility model oil distribution casing structural representation.
Embodiment
See Fig. 1, the oil effect of joining of axial variable plunger pump oil distribution casing: pump cover 1, oil distribution casing 2, cylinder body 3, plunger 4, swash plate 5.Oil distribution casing 2 is between pump cover 1 and cylinder body 3, and oil distribution casing 2 high and low pressure oil distributing zones go out oil pocket with pump cover 1 respectively, oil suction chamber is connected; Plunger 4 to-and-fro motion in cylinder body 3 is finished oil suction and is pressed oil work, and the fluid in the pump cover oil suction chamber enters in the cylinder body 3 through oil distribution casing 2 low pressure oil distributing zones; Cylinder body 3 Rotate 180s °, because the effect of swash plate 5, plunger 4 is finished compression work in cylinder body 3, produced simultaneously high pressure oil enters pump cover 1 through oil distribution casing 2 high pressure oil distributing zones and goes out oil pocket.
See Fig. 3, low pressure oil distribution port end adopted with the plane be the triangular groove that A-A is 10 ° ± 15 ' angle of inclination, high pressure oil distribution port end adopted with the plane be the triangular groove that B-B is 11 ° ± 15 ' angle of inclination; The groove point of triangular groove is to the back gauge of oil distribution port, less than cylinder body kidney slot width 2 ± 0.2mm.The triangular groove cross section be the C-C angle be 80 ° ± 15 ', root has been processed ￠ 4mm * 0.5mm semicircle orifice, as the pressure transition district of triangular groove and oil distribution casing oil duct.
Claims (4)
1. an axial variable plunger pump oil distribution casing device comprises that swash plate (5), oil distribution casing (2) are positioned between pump cover (1) and the cylinder body (3), and oil distribution casing (2) high and low pressure oil distribution port goes out oil pocket with pump cover (1) respectively, oil suction chamber is connected; Bottom, cylinder body (3) 9 holes is a kidney slot, width is consistent with 9 bore dias, plunger (4) is set in the cylinder body (3), it is characterized in that: oil distribution casing (2) cooperates on the plane with cylinder body (3), from low pressure oil distribution port end the triangular groove that is 10 ° ± 15 ' angle of inclination with the plane is set, the triangular groove that is 11 ° ± 15 ' angle of inclination with the plane is set from high pressure oil distribution port end.
2. a kind of axial variable plunger pump oil distribution casing device as claimed in claim 1, it is characterized in that: 10 ° ± 15 ', the groove point of 11 ° ± 15 ' triangular groove is to the back gauge of oil distribution casing (2) high and low pressure oil distribution port, less than cylinder body (3) kidney slot width 2 ± 0.2mm.
3. a kind of axial variable plunger pump oil distribution casing device as claimed in claim 1 is characterized in that: triangular groove cross section angle is 80 ° ± 15 ' and, root is designed to ￠ 4mm * 0.5mm semicircle orifice.
4. a kind of axial variable plunger pump oil distribution casing device as claimed in claim 1, it is characterized in that: axial variable plunger pump oil distribution casing device materials is an alloyed copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201121227U CN201635992U (en) | 2010-02-10 | 2010-02-10 | Oil distribution tray of axial variable plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201121227U CN201635992U (en) | 2010-02-10 | 2010-02-10 | Oil distribution tray of axial variable plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201635992U true CN201635992U (en) | 2010-11-17 |
Family
ID=43080482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201121227U Expired - Fee Related CN201635992U (en) | 2010-02-10 | 2010-02-10 | Oil distribution tray of axial variable plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201635992U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434420A (en) * | 2012-01-13 | 2012-05-02 | 无锡威孚精密机械制造有限责任公司 | Gas etching preventing distribution disk |
| CN103398007A (en) * | 2013-07-02 | 2013-11-20 | 佛山市科达液压机械有限公司 | Noise-reducing structure and noise-reducing method of hydraulic axial plunger pump |
| CN104791236A (en) * | 2014-12-23 | 2015-07-22 | 浙江工业大学 | Plunger pump thrust plate |
| CN106438256A (en) * | 2016-11-26 | 2017-02-22 | 浙江大学 | Static-pressure supporting structure for compensating pressing force of three-plunger-hole cylinder block |
| CN108799036A (en) * | 2018-06-22 | 2018-11-13 | 太原理工大学 | Can balancing moment and alleviate impact asymmetric axial plunger pump |
| CN108916033A (en) * | 2018-06-22 | 2018-11-30 | 太原理工大学 | Can balancing moment and alleviate impact four oil-distribution port valve plates |
| CN113297698A (en) * | 2021-05-27 | 2021-08-24 | 科大讯飞股份有限公司 | Engine oil pump noise reduction method and device, electronic equipment and storage medium |
-
2010
- 2010-02-10 CN CN2010201121227U patent/CN201635992U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434420A (en) * | 2012-01-13 | 2012-05-02 | 无锡威孚精密机械制造有限责任公司 | Gas etching preventing distribution disk |
| CN103398007A (en) * | 2013-07-02 | 2013-11-20 | 佛山市科达液压机械有限公司 | Noise-reducing structure and noise-reducing method of hydraulic axial plunger pump |
| CN104791236A (en) * | 2014-12-23 | 2015-07-22 | 浙江工业大学 | Plunger pump thrust plate |
| CN104791236B (en) * | 2014-12-23 | 2017-03-01 | 浙江工业大学 | A kind of valve plate of plunger pump |
| CN106438256A (en) * | 2016-11-26 | 2017-02-22 | 浙江大学 | Static-pressure supporting structure for compensating pressing force of three-plunger-hole cylinder block |
| CN106438256B (en) * | 2016-11-26 | 2018-04-20 | 浙江大学 | Compensate the hydrostatic support structure of three plunger hole cylinder body thrusts |
| CN108799036A (en) * | 2018-06-22 | 2018-11-13 | 太原理工大学 | Can balancing moment and alleviate impact asymmetric axial plunger pump |
| CN108916033A (en) * | 2018-06-22 | 2018-11-30 | 太原理工大学 | Can balancing moment and alleviate impact four oil-distribution port valve plates |
| CN108799036B (en) * | 2018-06-22 | 2019-08-30 | 太原理工大学 | Can balancing moment and alleviate impact asymmetric axial plunger pump |
| CN113297698A (en) * | 2021-05-27 | 2021-08-24 | 科大讯飞股份有限公司 | Engine oil pump noise reduction method and device, electronic equipment and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHONGQING YUANFENG MACHINERY CO., LTD. Free format text: FORMER NAME: JIANGLING INSTRUMENT FACTORY, CHONGQING |
|
| CP03 | Change of name, title or address |
Address after: Chongqing Jiangling Instrument Factory No. 1111 five bridge 404120 Chongqing District of Wanzhou city Bai'an Road Patentee after: Chongqing Zhaofeng Machienry Co., Ltd. Address before: Chongqing Jiangling Instrument Factory No. 1111 five bridge 404000 Chongqing District of Wanzhou city Bai'an Road Patentee before: Jiangling Instrument Factory, Chongqing |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20190210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |