CN203548173U - Oil replenishing and flushing device of hydraulic variable displacement piston pump - Google Patents
Oil replenishing and flushing device of hydraulic variable displacement piston pump Download PDFInfo
- Publication number
- CN203548173U CN203548173U CN201320695050.7U CN201320695050U CN203548173U CN 203548173 U CN203548173 U CN 203548173U CN 201320695050 U CN201320695050 U CN 201320695050U CN 203548173 U CN203548173 U CN 203548173U
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- China
- Prior art keywords
- cavity volume
- oil
- pump
- mounting hole
- suction booster
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- Withdrawn - After Issue
Links
- 238000006073 displacement reaction Methods 0.000 title abstract description 10
- 238000011010 flushing procedure Methods 0.000 title abstract description 10
- 230000002262 irrigation Effects 0.000 claims description 14
- 238000003973 irrigation Methods 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 30
- 239000010720 hydraulic oil Substances 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
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- Details Of Reciprocating Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses an oil replenishing and flushing device of a hydraulic variable displacement piston pump. The oil replenishing and flushing device comprises a shell (1), a rear cover (2) and a rotating shaft (3). A shell containing cavity (4) is arranged in the shell (1), the rear cover (2) is provided with an oil suction channel, and the oil suction channel comprises an oil suction opening A (5), a pressurizing containing cavity (6), a booster pump mounting hole (7) and an oil suction opening B (8) which are sequentially communicated. A booster pump (9) is mounted in the booster pump mounting hole (7), the rear cover (2) is provided with an oil replenishing and flushing channel (13), and the pressurizing containing cavity (6) is communicated with the shell containing cavity (4) through the oil replenishing and flushing channel (13). The oil replenishing and flushing device of the hydraulic variable displacement piston pump has the advantages that the requirements for the function of oil replenishing and the function of flushing and cooling are met simultaneously, the integration degree is high, the structure is compact, the size is small, the cavitation phenomenon is avoided, the reliability of the pump is improved, the service life of the pump is prolonged, and maintaining cost is reduced.
Description
Technical field
The utility model relates to plunger pump technique field, particularly the repairing of a kind of hydraulic variable flow plunger pump and Rinsing unit.
Background technique
Hydraulic variable flow plunger pump generally comprises the housing bonnet of housing and connection, thrust plate, running shaft is installed in the cavity volume of housing, passes through cylinder body and the plunger of spline joint with running shaft, has the suction passage being connected with housing chamber on bonnet.
Hydraulic planger pump in the course of the work suction passage cannot there will be moment negative pressure with avoiding, frequently occur that negative pressure can make the part contact surfaces such as pump port plate and cylinder body produce loose and peel off, produce cavitation phenomenon, this just requires suction passage to carry out supercharging, but the fuel tank that cannot realize connecting suction passage at present general main frame seals supercharging, make hydraulic variable flow plunger pump in use can produce cavitation phenomenon, especially pump is in high rotating speed, during large discharge capacity, cavitation phenomenon is serious especially, greatly reduce the working life of plunger pump, improved maintenance cost.
In addition, when pump is during in small displacement or zero delivery long-time running, because the hydraulic oil by oil hydraulic pump does not seldom even have hydraulic oil, pass through oil hydraulic pump, the heat producing between pump internal friction pair cannot be taken away, and causes oil hydraulic pump temperature to raise, and cannot work.At this moment often need by other oil hydraulic pumps external one rinse oil circuit oil hydraulic pump is carried out cooling, not only inconvenience but also greatly improved cost.
Model utility content
The purpose of this utility model is to overcome the shortcoming of prior art, provide a kind of meet repairing function simultaneously and rinse that refrigerating function, integrated degree are high, compact structure, the repairing of hydraulic variable flow plunger pump and Rinsing unit that volume is little.
The purpose of this utility model is achieved through the following technical solutions: the repairing of a kind of hydraulic variable flow plunger pump and Rinsing unit, it comprises housing, bonnet and running shaft, in housing, be provided with housing cavity volume, in housing cavity volume, running shaft is installed, bonnet is provided with the suction passage being communicated with housing cavity volume, described suction passage comprises the inlet port A being communicated with successively, supercharging cavity volume, suction booster mounting hole and inlet port B, inlet port A is communicated with housing cavity volume, in suction booster mounting hole, suction booster is installed, the end of described running shaft is stretched in suction booster mounting hole, suction booster and running shaft connection for transmission, on bonnet, be also provided with repairing irrigation channel, supercharging cavity volume is also communicated with housing cavity volume by repairing irrigation channel.
Described suction booster consists of the cylinder type inwall of suction booster mounting hole and the supercharging impeller being arranged in suction booster mounting hole, and supercharging impeller is installed on running shaft.
The utlity model has following advantage:
The utility model makes full use of suction booster and repairing irrigation channel, repairing function while completing the high rotating speed of the large discharge capacity of oil hydraulic pump, improve the pressure of oil hydraulic pump inlet port, prevent that inlet port from producing negative pressure and producing suction sky, stopped the generation of cavitation phenomenon, reliability and the life-span of having improved pump, reduced maintenance cost.
When oil hydraulic pump small displacement or even zero delivery, because oil hydraulic pump inlet port oil absorption greatly reduces, booster cavity pressure rise, its pressure is higher than the pressure in housing cavity volume, and the hydraulic oil in supercharging cavity volume flows into housing cavity volume flowing into fuel tank by revealing hydraulic fluid port by repairing irrigation channel, completes hydraulic pressure pump flush refrigerating function, reduce the operating temperature of oil hydraulic pump when small displacement or zero delivery, do not need extra flushing oil circuit, integrated degree is high, greatly reduces cost.
The utility model and common product ratio, the existing system that simultaneously meets repairing function (improving inlet port pressure) and rinse refrigerating function is than high 30% left and right of the utility model cost.And the integrated degree of the utility model is high, compact structure, reduces volume greatly.
The utility model is compared with conventional pumps, and revolution speed improves 25%, and under equal operating mode, mean lifetime increases by 120%, and rate of fault reduces by 85%.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
In figure, 1-housing, 2-bonnet, 3-running shaft, 4-housing cavity volume, 5-inlet port A, 6-supercharging cavity volume, 7-suction booster mounting hole, 8-inlet port B, 9-suction booster, 10-cylinder body, 11-thrust plate, 12-plunger, 13-repairing irrigation channel.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described, protection domain of the present utility model is not limited to the following stated:
As shown in Figure 1, a kind of hydraulic variable flow plunger pump repairing and Rinsing unit, it comprises housing 1, bonnet 2 and running shaft 3, in housing 1, be provided with housing cavity volume 4, running shaft 3 is installed in housing cavity volume 4, running shaft 3 is installed on housing 1 by bearing, and running shaft 3 stretches in housing cavity volume 4, bonnet 2 is provided with the suction passage being communicated with housing cavity volume 4, described suction passage comprises the inlet port A5, supercharging cavity volume 6, suction booster mounting hole 7 and the inlet port B8 that are communicated with successively, inlet port A5 is communicated with housing cavity volume 4, and suction booster 9 is installed in suction booster mounting hole 7.
The end of described running shaft 3 is stretched in suction booster mounting hole 7, suction booster 9 is by spline and running shaft 3 connection for transmissions, by running shaft 3, drive suction booster 9 rotary works, be also provided with repairing irrigation channel 13 on bonnet 2, supercharging cavity volume 6 is also communicated with housing cavity volume 4 by repairing irrigation channel 13.
In housing 1, be also provided with cylinder body 10, thrust plate 11 and plunger 12, cylinder body 10 is connected with running shaft 3 by spline, by rotating shaft, drives cylinder body 10 to rotate, thereby drives plunger 12 to complete oil suction and oil extraction in the interior motion of cylinder body 10.
Described suction booster 9 consists of the cylinder type inwall of suction booster mounting hole 7 and the supercharging impeller being arranged in suction booster mounting hole 7, and supercharging impeller is installed on running shaft 3.
Preferably, one end of inlet port B8 connection suction booster mounting hole 7 is not less than the section area of suction booster mounting hole 7 by the section area intercepting perpendicular to the plane of suction booster mounting hole 7 axis.
Adopt the repairing of above-mentioned hydraulic variable flow plunger pump and Rinsing unit to carry out the method for repairing and flushing, it comprises the following steps:
When S1, plunger pump work, be thereby that running shaft 3 drives cylinder body 10 to rotate drive plunger 12 when the interior motion of cylinder body 10 completes oil suction and oil extraction, running shaft 3 drives suction booster 9 rotary works, the hydraulic oil entering from bonnet 2 by inlet port B8 enters supercharging cavity volume 6 being introduced into suction booster 9 superchargings, enter again inlet port A5 and repairing irrigation channel 13, improved the pressure of inlet port A5;
S2, when oil hydraulic pump is during in small displacement or when discharge capacity is zero, inlet port A5 oil absorption is few, supercharging cavity volume 6 internal pressures rise, its pressure is higher than the pressure in housing cavity volume 4, hydraulic oil in supercharging cavity volume 6 flows into housing cavity volume 4 by repairing irrigation channel 13, by revealing hydraulic fluid port, flow into fuel tank again, complete hydraulic pressure pump flush coolingly, reduce the operating temperature of oil hydraulic pump when small displacement or zero delivery;
S3, when oil hydraulic pump is during in maximum pump discharge, inlet port A5 oil absorption is many, supercharging cavity volume 6 internal pressures reduce, its pressure is lower than the pressure in housing cavity volume 4, hydraulic oil in housing cavity volume 4 enters supercharging cavity volume 6 by repairing irrigation channel 13 and carries out repairing, the pressure that improves supercharging cavity volume 6, the pressure that enters like this oil hydraulic pump inlet port A5 hydraulic oil can not produce negative pressure, the generation of having stopped cavitation phenomenon.
The utility model makes full use of suction booster and repairing irrigation channel, repairing function while completing the high rotating speed of the large discharge capacity of oil hydraulic pump, improve the pressure of oil hydraulic pump inlet port, prevent that inlet port from producing negative pressure and producing suction sky, stopped the generation of cavitation phenomenon, reliability and the life-span of having improved pump, reduced maintenance cost.When oil hydraulic pump small displacement or even zero delivery, because oil hydraulic pump inlet port oil absorption greatly reduces, booster cavity pressure rise, its pressure is higher than the pressure in housing cavity volume, and the hydraulic oil in supercharging cavity volume flows into housing cavity volume flowing into fuel tank by revealing hydraulic fluid port by repairing irrigation channel, completes hydraulic pressure pump flush refrigerating function, reduce the operating temperature of oil hydraulic pump when small displacement or zero delivery, do not need extra flushing oil circuit, integrated degree is high, greatly reduces cost.
Claims (2)
1. hydraulic variable flow plunger pump repairing and Rinsing unit, it comprises housing (1), bonnet (2) and running shaft (3), in housing (1), be provided with housing cavity volume (4), running shaft (3) is installed in housing cavity volume (4), bonnet (2) is provided with the suction passage being communicated with housing cavity volume (4), it is characterized in that: described suction passage comprises the inlet port A(5 being communicated with successively), supercharging cavity volume (6), suction booster mounting hole (7) and inlet port B(8), inlet port A(5) connection housing cavity volume (4), suction booster (9) is installed in suction booster mounting hole (7), the end of described running shaft (3) is stretched in suction booster mounting hole (7), suction booster (9) and running shaft (3) connection for transmission, on bonnet (2), be also provided with repairing irrigation channel (13), supercharging cavity volume (6) is also communicated with housing cavity volume (4) by repairing irrigation channel (13).
2. a kind of hydraulic variable flow plunger pump according to claim 1 repairing and Rinsing unit, it is characterized in that: described suction booster (9) consists of the cylinder type inwall of suction booster mounting hole (7) and the supercharging impeller being arranged in suction booster mounting hole (7), and supercharging impeller is installed on running shaft (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320695050.7U CN203548173U (en) | 2013-11-06 | 2013-11-06 | Oil replenishing and flushing device of hydraulic variable displacement piston pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320695050.7U CN203548173U (en) | 2013-11-06 | 2013-11-06 | Oil replenishing and flushing device of hydraulic variable displacement piston pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203548173U true CN203548173U (en) | 2014-04-16 |
Family
ID=50466299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320695050.7U Withdrawn - After Issue CN203548173U (en) | 2013-11-06 | 2013-11-06 | Oil replenishing and flushing device of hydraulic variable displacement piston pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203548173U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573610A (en) * | 2013-11-06 | 2014-02-12 | 四川省宜宾普什驱动有限责任公司 | Device and method for performing oil supplementing and washing on hydraulic variable plunger pump |
| CN104454436A (en) * | 2014-11-14 | 2015-03-25 | 宁波李氏实业有限公司 | Plunger pump |
| CN113586387A (en) * | 2021-07-16 | 2021-11-02 | 江苏欧盛液压科技有限公司 | Method and device for improving self-absorption capacity of axial plunger pump |
-
2013
- 2013-11-06 CN CN201320695050.7U patent/CN203548173U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573610A (en) * | 2013-11-06 | 2014-02-12 | 四川省宜宾普什驱动有限责任公司 | Device and method for performing oil supplementing and washing on hydraulic variable plunger pump |
| CN104454436A (en) * | 2014-11-14 | 2015-03-25 | 宁波李氏实业有限公司 | Plunger pump |
| CN113586387A (en) * | 2021-07-16 | 2021-11-02 | 江苏欧盛液压科技有限公司 | Method and device for improving self-absorption capacity of axial plunger pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140416 Effective date of abandoning: 20160420 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |