CN203230573U - Ultrahigh-pressure multi-stage radial plunger pump - Google Patents
Ultrahigh-pressure multi-stage radial plunger pump Download PDFInfo
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- CN203230573U CN203230573U CN 201320290790 CN201320290790U CN203230573U CN 203230573 U CN203230573 U CN 203230573U CN 201320290790 CN201320290790 CN 201320290790 CN 201320290790 U CN201320290790 U CN 201320290790U CN 203230573 U CN203230573 U CN 203230573U
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Abstract
The utility model discloses an ultrahigh-pressure multi-stage radial plunger pump which comprises the following components: a pump body (1), a pump base (2), an integrated block (3) and a pump shaft (4). At least one low-pressure plunger pair (5) with a first-stage oil outlet pressure and at least one high-pressure plunger pair (6) with a third-stage oil outlet pressure are provided between the pump body (1) and the pump base (2). The ultrahigh-pressure multi-stage radial plunger pump further comprises at least one middle-pressure plunger pair (7) with a second-stage oil outlet pressure. A position between a third oil path (103) on the integrated block (3) and a low-pressure overflow valve (9) and a position between the third oil path (103) on the integrated block (3) and the middle-pressure overflow valve (10) can respectively provided with a liquid control mechanism which can open or close a corresponding overflow valve. The ultrahigh-pressure multi-stage radial plunger pump has the following advantages: high operation efficiency, small volume, low cost and small weight.
Description
Technical field
The utility model relates to the hydraulics field, specifically is the multistage radial plunger pump of a kind of ultrahigh pressure.
Background technique
Radial plunger pump is very important hydraulic driving element in the industrial field, is widely used in industrial fields such as engineering machinery, mining machinery, plastics machinery, boats and ships, aviation, automobile, road and bridge, metallurgy.The common high-pressure radial plunger pump of prior art has only one-level high pressure (single-stage pump) or one-level high pressure to add one-level low pressure (two stage pump), and the working efficiency of two stage pump is higher than the one-level pump, but also has following defective:
1, two stage pump is that the one-level high-pressure low-flow adds the one-level low pressure and mass flow, when pumping pressure during in periods of low pressure output flow bigger; But when pressure enters high pressure phase above low pressure, the secondary pressurized overflow that just directly hangs down of low-pressure plunger, has only the high-pressure plunger subtask, low pressure stops flow output, only depend on the secondary small flow fuel feeding of high-pressure plunger, inhale, dredge oil amount is little, the time is long, efficient is low, thereby two-stage pump drives and carries out mechanical working efficiency still lower (not high enough).
2, can increase flow by increasing pump head trunk piston set quantity, comprise and radially increase trunk piston set quantity or axially increase, thereby increase work efficiency, but trunk piston set quantity increases the size that just must strengthen pump head, increase the input power of pump, thereby strengthened the volume and weight of plunger pump, increased consumption such as material, the energy, improved cost.
3, adopt the two-stage pump efficient of high-pressure plunger pump+gear pump structure also can improve, but volume is bigger, weight is heavier, the inapplicable mobile operating frequently of moving.
The model utility content
The technical problems to be solved in the utility model is, provides a kind of high working efficiency, volume is little, cost is low, the multistage radial plunger pump of lightweight ultrahigh pressure.
The technical solution of the utility model is, a kind of multistage radial plunger pump of ultrahigh pressure with following structure is provided, comprise the pump housing, pump-foot, integrated package and pump shaft, be provided with secondary and at least one three grades high-pressure plunger pairs that go out oil pressure of low-pressure plunger that at least one one-level goes out oil pressure between the described pump housing and the pump-foot, the oil outlet end of described low-pressure plunger pair is communicated with first oil circuit that is located at pump-foot, this first oil circuit is communicated with the 3rd oil circuit on being located at integrated package by first one-way valve, this first oil circuit simultaneously be located at integrated package on low pressure relief valve be communicated with, the oil outlet end of described high-pressure plunger pair is communicated with the 3rd oil circuit on being located at integrated package; It comprises that also at least one secondary goes out the middle pressure trunk piston set of oil pressure, press the oil pressure that of trunk piston set to go out the going out between the oil pressure of oil pressure and high-pressure plunger pair between the low-pressure plunger pair in described, press trunk piston set to be located between the pump housing and the pump-foot in described, press in described trunk piston set and low-pressure plunger pair, high-pressure plunger pair to be positioned on the cross section of same vertical pump shaft axis and along circumference and all distribute; Press the oil outlet end of trunk piston set to be communicated with second oil circuit that is located at pump-foot in described, described second oil circuit is communicated with the 3rd oil circuit on the integrated package by second one-way valve, simultaneously be located at integrated package on middle pressurized overflow valve be communicated with, be equipped with the hydraulic control mechanism that can open or close corresponding relief valve between the 3rd oil circuit on the described integrated package and the low pressure relief valve and between the 3rd oil circuit on the integrated package and the middle pressurized overflow valve.
Be equipped with the 4th oil circuit between the 3rd oil circuit on the described integrated package and the low pressure relief valve and between the 3rd oil circuit on the integrated package and the middle pressurized overflow valve, described hydraulic control mechanism comprises push rod, described push rod sliding fit is in the 4th oil circuit of correspondence, the top offsets with the valve ball of corresponding relief valve, the bottom is positioned at the 3rd oil circuit on the integrated package, seal all sealings between the 3rd oil circuit on the described integrated package and the middle pressurized overflow valve between the 3rd oil circuit on the described integrated package and the low pressure relief valve.
The quantity of described low-pressure plunger pair is two or more, and described first oil circuit then is a loop, and the oil outlet end of all low-pressure plunger pairs all is communicated with first oil circuit.
After adopting above structure, the utility model compared with prior art has the following advantages:
1, compares with the two-stage plunger pump, three grades of plunger pumps have increased the trunk piston set of middle extrusion oil pressure, make the actuator that drives when one-level goes out oil pressure and three grades and goes out to work between the oil pressure operation, have than two stage pump high pressure and be twice flow, improved the working efficiency of actuator greatly.
2, need not to strengthen the size of pump head, thereby do not increase the volume of plunger pump, can reduce cost.
3, three grades of radial plunger pumps of ultrahigh pressure all adopt the radial plunger pair to be the hydraulic system fuel feeding, and the integral structure that collects high pressure, middle pressure, low-pressure hydraulic transmission, electromechanical control, its level of integration height, and volume is little, in light weight, and using scope is wide.
As improvement, the quantity of described low-pressure plunger pair is two or more, and described first oil circuit then is a loop, and the oil outlet end of all low-pressure plunger pairs all is communicated with first oil circuit, reduces and impacts, makes pressure stability.
Description of drawings
Accompanying drawing 1 is the generalized section of the multistage radial plunger pump of ultrahigh pressure of the present utility model.
Accompanying drawing 2 is the A-A generalized section of Fig. 1.
Accompanying drawing 3 is the elevational schematic view of the multistage radial plunger pump of ultrahigh pressure of the present utility model.
Accompanying drawing 4 is the pump-foot generalized section of the multistage radial plunger pump of ultrahigh pressure of the present utility model.
Accompanying drawing 5 is the B-B generalized section of Fig. 4.
Accompanying drawing 7 is the schematic representation of the hydraulic control mechanism of the multistage radial plunger pump of ultrahigh pressure of the present utility model.
Accompanying drawing 8 is the hydraulic schematic diagram of the multistage radial plunger pump of ultrahigh pressure of the present utility model.
As shown in the figure: 1, the pump housing, 2, pump-foot, 3, integrated package, 4, pump shaft, 5, low-pressure plunger pair, 6, the high-pressure plunger pair, 7, middle pressure trunk piston set, 8, push rod, 9, low pressure relief valve, 10, middle pressurized overflow valve, 11, first one-way valve, 12, second one-way valve, 101, first oil circuit, 102, second oil circuit, the 103, the 3rd oil circuit, the 104, the 4th oil circuit, a, septum valve, b, low pressure modulating valve, c, septum valve.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As Fig. 1～shown in Figure 7, the multistage radial plunger pump of ultrahigh pressure of the present utility model, comprise the pump housing 1, pump-foot 2, integrated package 3 and pump shaft 4, be provided with low-pressure plunger secondary 5 and at least one the three grades high-pressure plunger pairs 6 that go out oil pressure that at least one one-level goes out oil pressure between the described pump housing 1 and the pump-foot 2, the oil outlet end of described low-pressure plunger pair 5 is communicated with first oil circuit 101 that is located at pump-foot 2, this first oil circuit 101 is communicated with the 3rd oil circuit 103 on being located at integrated package 3 by first one-way valve 11, this first oil circuit 101 simultaneously be located at integrated package 3 on low pressure relief valve 9 be communicated with, namely the oil one tunnel that comes out from two low-pressure plunger pairs 5 is flowing into the 3rd oil circuit 103 on the integrated package 3 through first one-way valve 11, another road is communicated with drain tap through low pressure relief valve 9, and the oil outlet end of described high-pressure plunger pair 6 is communicated with the 3rd oil circuit 103 on the integrated package 3; The oil that comes out from high-pressure plunger pair 6 directly enters into the 3rd oil circuit 103.
The multistage radial plunger pump of ultrahigh pressure of the present utility model, it comprises that also at least one secondary goes out the middle pressure trunk piston set 7 of oil pressure, press the oil pressure that of trunk piston set 7 to go out the going out between the oil pressure of oil pressure and high-pressure plunger pair 6 between low-pressure plunger pair 5 in described, press trunk piston set 7 to be located between the pump housing 1 and the pump-foot 2 in described, described in pressure trunk piston set 7 and low-pressure plunger pair 5, high-pressure plunger pair 6 be positioned on the cross section of same vertical pump shaft 4 axis and along circumference and all distribute; Press the oil outlet end of trunk piston set 7 to be communicated with second oil circuit 102 that is located at pump-foot 2 in described, described second oil circuit 102 is communicated with the 3rd oil circuit 103 on the integrated package 3 by second one-way valve 12, simultaneously be located at integrated package 3 on middle pressurized overflow valve 10 be communicated with, be equipped with the hydraulic control mechanism that can open or close corresponding relief valve between the 3rd oil circuit 103 on the described integrated package 3 and the low pressure relief valve 9 and between the 3rd oil circuit 103 on the integrated package 3 and the middle pressurized overflow valve 10.
Be equipped with the 4th oil circuit 104 between the 3rd oil circuit 103 on the described integrated package 3 and the low pressure relief valve 9 and between the 3rd oil circuit 103 on the integrated package 3 and the middle pressurized overflow valve 10, described hydraulic control mechanism comprises push rod 8, described push rod 8 sliding fits are in the 4th oil circuit 104 of correspondence, the top offsets with the valve ball 13 of corresponding relief valve, the bottom is positioned at the 3rd oil circuit 103 on the integrated package 3, sealing between the 3rd oil circuit 103 on the described integrated package 3 and the low pressure relief valve 9, all sealings between the 3rd oil circuit 103 on the described integrated package 3 and the middle pressurized overflow valve 10, the middle part that is push rod 8 is provided with sealing configuration, make between the 3rd oil circuit 103 and the relief valve and seal, push rod 8 is subjected to the oil pressure effect and slides, slide to the relief valve direction, relief valve is opened, otherwise slided, then relief valve cuts out.
The quantity of described low-pressure plunger pair 5 is two or more, and 101 of described first oil circuits are a loop, and the oil outlet end of all low-pressure plunger pairs 5 all is communicated with first oil circuit 101.
The principle of the multistage radial plunger pump of ultrahigh pressure of the present utility model:
The working pressure of the radial plunger pump of present embodiment is three grades, and, middle pressures 8-30MPa above as: (surpassing) high pressure 30Mpa, below the low pressure 8Mpa, this radial plunger pump adopt pressure trunk piston set 7 and high-pressure plunger pair 6 in 5, one of two each and every one low-pressure plunger pairs; Its flow is: high pressure: 1.07L/min, middle pressure: 2.14L/min, low pressure: 10.22L/min.
As shown in Figure 8, be the hydraulic schematic diagram of radial plunger pump of the present utility model, wherein a, septum valve, b, low pressure modulating valve, c, septum valve.
Its working principle: when actuator's oil cylinder advanced, triplex was enabled in the operating on low voltage stage, four trunk piston set while fuel feeding, and flow is big, and oiling is fast, advances the oil cylinder movement velocity fast; When surpassing low pressure, the triplex working pressure enters middle pressure during the stage, because low tension loop is closed in the one-way valve effect, the oil pressure of the oil circuit 102 on the integrated package 3 backs down low pressure relief valve by the push rod of the hydraulic control mechanism of correspondence at this moment, low pressure relief valve is opened draining, press trunk piston set and high-pressure plunger auxiliary oil circuit to actuator's fuel feeding in having only this moment, be that the medium and high pressure two-stage is worked simultaneously, it inhales fuel delivery is middle baric flow amount+high pressure flow, strengthened middle pressure (10-33Mpa) section flow, when the suction fuel delivery of its pump is simple high-pressure work 2 times, its time has shortened half, also improves 2 times thereby work is imitated; When in triplex pressure surpasses, compressing into into high pressure phase, because middle hydraulic circuit is closed in the one-way valve effect, the oil pressure of the oil circuit 102 on the integrated package 3 backs down middle pressurized overflow valve by the push rod of corresponding hydraulic control mechanism at this moment, middle pressurized overflow opening of valves draining, only the high-pressure plunger pair works on, high-pressure low-flow is actuator's fuel feeding, keeps the high-pressure work state.
When actuator's oil cylinder rollback, switch by solenoid directional control valve, press the low pressure regulating pressure valve set pressure, the low pressure and mass flow draining is realized the quick rollback of actuator's oil cylinder, raises the efficiency.
Claims (3)
1. multistage radial plunger pump of ultrahigh pressure, comprise the pump housing (1), pump-foot (2), integrated package (3) and pump shaft (4), be provided with low-pressure plunger pair (5) and at least one the three grades high-pressure plunger pairs (6) that go out oil pressure that at least one one-level goes out oil pressure between the described pump housing (1) and the pump-foot (2), the oil outlet end of described low-pressure plunger pair (5) is communicated with first oil circuit (101) that is located at pump-foot (2), this first oil circuit (101) is communicated with the 3rd oil circuit (103) on being located at integrated package (3) by first one-way valve (11), this first oil circuit (101) simultaneously be located at integrated package (3) on low pressure relief valve (9) be communicated with, the oil outlet end of described high-pressure plunger pair (6) is communicated with the 3rd oil circuit (103) on being located at integrated package (3); It is characterized in that: it comprises that also at least one secondary goes out the middle pressure trunk piston set (7) of oil pressure, press the oil pressure that of trunk piston set (7) to go out the going out between the oil pressure of oil pressure and high-pressure plunger pair (6) between low-pressure plunger pair (5) in described, press trunk piston set (7) to be located between the pump housing (1) and the pump-foot (2) in described, described in pressure trunk piston set (7) and low-pressure plunger pair (5), high-pressure plunger pair (6) be positioned on the cross section of same vertical pump shaft (4) axis and along circumference and all distribute; Press the oil outlet end of trunk piston set (7) to be communicated with second oil circuit (102) that is located at pump-foot (2) in described, described second oil circuit (102) is communicated with the 3rd oil circuit (103) on the integrated package (3) by second one-way valve (12), simultaneously be located at integrated package (3) on middle pressurized overflow valve (10) be communicated with, be equipped with the hydraulic control mechanism that can open or close corresponding relief valve between the 3rd oil circuit (103) on the described integrated package (3) and the low pressure relief valve (9) and between the 3rd oil circuit (103) on the integrated package (3) and the middle pressurized overflow valve (10).
2. the multistage radial plunger pump of ultrahigh pressure according to claim 1, it is characterized in that: be equipped with the 4th oil circuit (104) between the 3rd oil circuit (103) on the described integrated package (3) and the low pressure relief valve (9) and between the 3rd oil circuit (103) on the integrated package (3) and the middle pressurized overflow valve (10), described hydraulic control mechanism comprises push rod (8), described push rod (8) sliding fit is in the 4th oil circuit (104) of correspondence, the top offsets with the valve ball (13) of corresponding relief valve, the bottom is positioned at the 3rd oil circuit (103) on the integrated package (3), sealing between the 3rd oil circuit (103) on the described integrated package (3) and the low pressure relief valve (9), all sealings between the 3rd oil circuit (103) on the described integrated package (3) and the middle pressurized overflow valve (10).
3. the multistage radial plunger pump of ultrahigh pressure according to claim 1, it is characterized in that: the quantity of described low-pressure plunger pair (5) is two or more, described first oil circuit (101) then is a loop, and the oil outlet end of all low-pressure plunger pairs (5) all is communicated with first oil circuit (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320290790 CN203230573U (en) | 2013-05-23 | 2013-05-23 | Ultrahigh-pressure multi-stage radial plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320290790 CN203230573U (en) | 2013-05-23 | 2013-05-23 | Ultrahigh-pressure multi-stage radial plunger pump |
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| Publication Number | Publication Date |
|---|---|
| CN203230573U true CN203230573U (en) | 2013-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320290790 Withdrawn - After Issue CN203230573U (en) | 2013-05-23 | 2013-05-23 | Ultrahigh-pressure multi-stage radial plunger pump |
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| CN (1) | CN203230573U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277276A (en) * | 2013-05-23 | 2013-09-04 | 宁波赛维思机械有限公司 | Ultrahigh pressure multistage radial plunger pump |
-
2013
- 2013-05-23 CN CN 201320290790 patent/CN203230573U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277276A (en) * | 2013-05-23 | 2013-09-04 | 宁波赛维思机械有限公司 | Ultrahigh pressure multistage radial plunger pump |
| CN103277276B (en) * | 2013-05-23 | 2015-06-10 | 宁波赛维思机械有限公司 | Ultrahigh pressure multistage radial 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: 20131009 Effective date of abandoning: 20150610 |
|
| RGAV | Abandon patent right to avoid regrant |