CN203285767U - Active oil return supercharging device - Google Patents
Active oil return supercharging device Download PDFInfo
- Publication number
- CN203285767U CN203285767U CN2013202402787U CN201320240278U CN203285767U CN 203285767 U CN203285767 U CN 203285767U CN 2013202402787 U CN2013202402787 U CN 2013202402787U CN 201320240278 U CN201320240278 U CN 201320240278U CN 203285767 U CN203285767 U CN 203285767U
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- China
- Prior art keywords
- piston rod
- spool
- spring
- cylinder body
- end cap
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- Expired - Lifetime
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Abstract
The utility model discloses an active oil return supercharging device which comprises an upper end cover (1), a base (2), a cylinder block (3), a piston rod (4), a spring I (5), a seal plug (6), a lower end cover (7), a spring II, a valve core and a valve sleeve, every two of the spring I (5), the seal plug (6), the piston rod (4), the base (2), the cylinder block (3) and the spring II are coaxially connected with each other, the valve core is coaxially connected with the valve sleeve which is in thread connection with the piston rod (4), and the upper end cover (1) and the lower end cover (7) are both in thread connection with the cylinder block (3). An oil inlet of the cylinder block (3) is connected with an oil source, an oil return port of the upper end cover (1) is connected with an oil box, and a high-pressure oil outlet of the seal plug (6) is connected with an executing element. After the oil inlet has no pressure, high-pressure oil in the executing element can return actively. The active oil return supercharging device is compact in structure, small in occupied space, high in integration level and high in reliability, saves energy, and is beneficial to miniaturization of a whole hydraulic system.
Description
Technical field
The utility model relates to a kind of hydraulic pressure intensifier, particularly a kind of supercharging device of active oil return.
Background technique
Hydraulics is used widely in heavy engineering car field.Generally exist a plurality of executive components to realize different functions in hydraulic system.Because the working condition of executive component is different, the demand of load behavior is also different, and there is the pressure demand higher than other loop in local oil hydraulic circuit.Straightforward procedure is for improving the oil supply pressure of whole system, but there is the high pressurized overflow of fluid in this mode, system heating, the problem of energy dissipation.Mostly be and adopt pressurized machine that the high-pressure of minor loop is provided, thereby reduced the oil supply pressure of whole system.General pressurized machine comprises: upper end cap, cylinder body, piston rod, lower end cap, control valve and connecting pipeline.When supercharging, cut off oil return by control valve, obtain high-pressure, drive executive component; After end-of-job, by control valve, discharge high-pressure.Thereby the dispersion of pressurized machine element, taking up room large, the leakage link is many, and poor reliability, be unfavorable for the miniaturization of whole hydraulic system.
The model utility content
The purpose of this utility model is to provide a kind of supercharging device of active oil return, solves the supercharging device complex structure, and element disperses, and takes up room large, leaks link many, poor reliability, the whole hydraulic system large problem that takes up room.
A kind of supercharging device of active oil return comprises: upper end cap, cylinder body, piston rod and lower end cap also comprise: base, spring I, seal plug, spring II, spool, valve pocket.
Piston rod two ends cross-section area is different, there is respectively the different endoporus of diameter at the two ends of cylinder body, the spool two ends are the different cylndrical surface of cross-section area, the middle transition of described spool two terminal circle cylinder is partly the conical surface, valve pocket has endoporus, an end face and its endoporus intersection of described valve pocket have sharp edge, namely without the cutting edge of chamfering.The end socket that spring I and piston rod cross-section area are little, the little side of the little side of piston rod cross-section area and cylinder inner bore diameter is coaxial connection also in the same way, the conical surface of spool and the coaxial connection of valve pocket and spool is relative with the cutting edge of valve pocket, the end socket that spring II and piston rod cross-section area are large, valve pocket is connected with piston rod thread, and base is connected with cylinder body is coaxial, and upper end cap is threaded with cylinder body, seal plug is connected with cylinder body is coaxial, and lower end cap is threaded with cylinder body.The filler opening of cylinder body communicates with the oil supply pressure oil export, and the return opening of upper end cap communicates with the filler opening of fuel tank, and the high pressure oil outlet on seal plug communicates with the filler opening of the executive component that needs high pressure.
When the filler opening of supercharging device cylinder body and oil sources disconnect, under the effect of spring I, the end face of piston rod is pressed on upper end cap, upper end cap makes valve core movement, the Compress Spring II, thereby the conical surface of spool is not contacted and then blow-by with the valve pocket cutting edge, and the working medium in fuel tank can enter the little chamber of cross-section area of piston rod; The filler opening of cylinder body is connected oil sources, under the effect of working medium, overcome the active force of spring I, piston rod movement, under the effect of working medium and spring II, valve core movement, the conical surface of spool contacts and then seals with the valve pocket cutting edge, block the passage in the little chamber of the cross-section area of fuel tank and piston rod, the little side pressure of piston rod cross-section area is higher than the system oil supply pressure of the large side of cross-section area, thereby working medium enters executive component; After the system pressure of filler opening discharges, under the effect of working medium and spring I, piston rod moves to the upper end cap direction, the end face of piston rod is pressed on upper end cap, upper end cap makes valve core movement, the Compress Spring II, thus the conical surface of spool is not contacted and then blow-by with the valve pocket cutting edge, working medium in executive component by piston rod and spool the conical surface and the valve pocket cutting edge between passage return in fuel tank, complete initiatively oil return.
The utility model compact structure, take up room little, and level of integration is high, and reliability is high, and energy saving is beneficial to the miniaturization of whole hydraulic system, is specially adapted to power source less, and spatial structure is narrow and small needs again the hydraulic system higher than system pressure.
Description of drawings
The supercharging device schematic diagram of a kind of active oil return of Fig. 1;
The local enlarged diagram of the supercharging device of a kind of active oil return of Fig. 2.
1. upper end cap 2. base 3. cylinder body 4. piston rod 5. spring I 6. seal plug 7. lower end cap 8. spring II 9. spool 10. valve pockets.
Embodiment
A kind of supercharging device of active oil return comprises: upper end cap 1, cylinder body 3, piston rod 4 and lower end cap 7 also comprise: base 2, spring I 5, seal plug 6, spring II 8, spool 9, valve pocket 10.
Piston rod 4 two ends cross-section areas are different, there is the endoporus of different-diameter at the two ends of cylinder body 3, spool 9 two ends are the different cylndrical surface of cross-section area, the middle transition of described spool 9 two terminal circle cylinders is partly the conical surface, valve pocket 10 has endoporus, an end face of described valve pocket 10 and its endoporus intersection keep sharp edge, namely without the cutting edge of chamfering.The end socket that spring I 5 is little with piston rod 4 cross-section areas, the little side of the little side of piston rod 4 cross-section areas and cylinder body 3 diameter of bores is coaxial connection also in the same way, the conical surface of spool 9 and the coaxial connection of valve pocket 10 and spool 9 is relative with the cutting edge of valve pocket 10, the end socket that spring II 8 is large with piston rod 4 cross-section areas, valve pocket 10 is threaded with piston rod 4, base 2 is connected with cylinder body 3 is coaxial, upper end cap 1 is threaded with cylinder body 3, seal plug 6 is connected with cylinder body 3 is coaxial, and lower end cap 7 is threaded with cylinder body 3.Filler opening on cylinder body 3 communicates with the oil supply pressure oil export, and the return opening on upper end cap 1 communicates with the filler opening of fuel tank, and the high pressure oil outlet on seal plug 6 communicates with the filler opening of the executive component that needs high pressure.
When the filler opening of supercharging device cylinder body 3 and oil sources disconnect, under the effect of spring I 5, the end face of piston rod 4 is pressed on upper end cap 1, upper end cap 1 makes spool 9 motions, Compress Spring II 8, thereby the conical surface of spool 9 is not contacted and then blow-by with valve pocket 10 cutting edges, and the working medium in fuel tank can enter the little chamber of cross-section area of piston rod 4; The filler opening of cylinder body 3 is connected oil sources, under the effect of working medium, overcome the active force of spring I 5, piston rod 4 motions, under the effect of working medium and spring II 8, spool 9 motions, the conical surface of spool 9 contacts and then seals with valve pocket 10 cutting edges, block the passage in the little chamber of the cross-section area of fuel tank and piston rod 4, the little side pressure of piston rod 4 cross-section areas is higher than the system oil supply pressure of the large side of cross-section area, thereby working medium enters executive component; After the system pressure of filler opening discharges, under the effect of working medium and spring I 5, piston rod 4 is to upper end cap 1 direction motion, the end face of piston rod 4 is pressed on upper end cap 1, upper end cap 1 makes spool 9 motions, Compress Spring II 8, thus the conical surface of spool 9 is not contacted and then blow-by with valve pocket 10 cutting edges, working medium in executive component by piston rod 4 and spool 9 the conical surface and valve pocket 10 cutting edges between passage return in fuel tank, complete initiatively oil return.
Claims (1)
1. supercharging device of oil return initiatively, comprise: upper end cap (1), cylinder body (3), piston rod (4) and lower end cap (7) characterized by further comprising: base (2), spring I (5), seal plug (6), spring II (8), spool (9) and valve pocket (10);
piston rod (4) two ends cross-section area is different, there is the endoporus of different-diameter at the two ends of cylinder body (3), spool (9) two ends are the different cylndrical surface of cross-section area, the middle transition of described spool (9) two terminal circle cylinder is partly the conical surface, valve pocket (10) has endoporus, an end face of described valve pocket (10) and its endoporus intersection keep sharp edge, namely without the cutting edge of chamfering, the end socket that spring I (5) is little with piston rod (4) cross-section area, the little side of the little side of piston rod (4) cross-section area and cylinder body (3) diameter of bore is coaxial connection also in the same way, the conical surface of spool (9) and the coaxial connection of valve pocket (10) and spool (9) is relative with the cutting edge of valve pocket (10), the end socket that spring II (8) is large with piston rod (4) cross-section area, valve pocket (10) is threaded with piston rod (4), base (2) and coaxial connection of cylinder body (3), upper end cap (1) is threaded with cylinder body (3), seal plug (6) and coaxial connection of cylinder body (3), lower end cap (7) is threaded with cylinder body (3), filler opening on cylinder body (3) communicates with the oil supply pressure oil export, and the return opening on upper end cap (1) communicates with the filler opening of fuel tank, and the oil outlet on seal plug (6) communicates with the filler opening of the executive component that needs high pressure,
When the filler opening of cylinder body (3) and oil sources disconnect, under the effect of spring I (5), the end face of piston rod (4) is pressed on upper end cap (1), upper end cap (1) makes spool (9) motion, Compress Spring II (8), thereby the conical surface of spool (9) is not contacted and then blow-by with valve pocket (10) cutting edge, and the working medium in fuel tank can enter the little chamber of cross-section area of piston rod (4); The filler opening of cylinder body (3) is connected oil sources, under the effect of working medium, overcome the active force of spring I (5), piston rod (4) motion, under the effect of working medium and spring II (8), spool (9) motion, the conical surface of spool (9) contacts and then seals with valve pocket (10) cutting edge, block the passage in the little chamber of the cross-section area of fuel tank and piston rod (4), the little side pressure of piston rod (4) cross-section area is higher than the system oil supply pressure of the large side of cross-section area, thereby working medium enters executive component; After the system pressure of filler opening discharges, under the effect of working medium and spring I (5), piston rod (4) moves to upper end cap (1) direction, the end face of piston rod (4) is pressed on upper end cap (1), upper end cap (1) makes spool (9) motion, Compress Spring II (8), thereby the conical surface of spool (9) is not contacted and then blow-by with valve pocket (10) cutting edge, working medium in executive component by piston rod (4) and spool (9) the conical surface and valve pocket (10) cutting edge between passage return in fuel tank, complete initiatively oil return.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202402787U CN203285767U (en) | 2013-09-03 | 2013-09-03 | Active oil return supercharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202402787U CN203285767U (en) | 2013-09-03 | 2013-09-03 | Active oil return supercharging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203285767U true CN203285767U (en) | 2013-11-13 |
Family
ID=49542132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202402787U Expired - Lifetime CN203285767U (en) | 2013-09-03 | 2013-09-03 | Active oil return supercharging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203285767U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626597A (en) * | 2014-11-27 | 2016-06-01 | 无锡市海骏液压机电设备有限公司 | Guiding type pressurization sleeve of hydraulic pump oil tank |
| CN105626598A (en) * | 2014-11-27 | 2016-06-01 | 无锡市海骏液压机电设备有限公司 | Pressurization sleeve structure of fuel tank |
-
2013
- 2013-09-03 CN CN2013202402787U patent/CN203285767U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626597A (en) * | 2014-11-27 | 2016-06-01 | 无锡市海骏液压机电设备有限公司 | Guiding type pressurization sleeve of hydraulic pump oil tank |
| CN105626598A (en) * | 2014-11-27 | 2016-06-01 | 无锡市海骏液压机电设备有限公司 | Pressurization sleeve structure of fuel tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131113 |