CN2378549Y - High and low pressure double hand-operated oil pump - Google Patents
High and low pressure double hand-operated oil pump Download PDFInfo
- Publication number
- CN2378549Y CN2378549Y CN 99215386 CN99215386U CN2378549Y CN 2378549 Y CN2378549 Y CN 2378549Y CN 99215386 CN99215386 CN 99215386 CN 99215386 U CN99215386 U CN 99215386U CN 2378549 Y CN2378549 Y CN 2378549Y
- Authority
- CN
- China
- Prior art keywords
- oil
- pressure
- valve
- pump
- low pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model relates to a high and low pressure double-hand operated oil pump, which is characterized in that an oil suction and exhaust valve (2) is both an oil exhaust valve of a low-pressure pump and an oil suction valve of a high-pressure pump. The utility model has the advantages of simple structure and high reliability. The pressure of the low-pressure pump is controlled by an unloading overflow valve (4), controlling oil of the unloading overflow valve (4) is from an oil outlet of a main oil exhaust valve (1). When the pressure is lower than setting pressure P1 of the unloading overflow valve (4), the two pumps exhaust oil together; when the pressure is higher than P1, the unloading overflow valve (4) is opened, the oil in the low-pressure pump returns oil with zero load, the part of the low-pressure pump do not consume handle power of operators, and the design range of performance parameters of the pump is enlarged.
Description
The utility model relates to a kind of hydraulic pressure high and low pressure duplex hand oil pump.
Existing high and low pressure duplex hand oil pump, low pressure pump partly is provided with low pressure oil sucting valve, low pressure draining valve and low pressure relief valve, and high-pressure service pump partly is provided with high pressure oil sucting valve, high pressure draining valve and high-pressure overflow valve.The oil outlet of low pressure draining valve and high pressure draining valve is connected in parallel, and drives by rocking bar that plunger motion is inhaled, oil extraction work.When pressure is lower than low pressure relief valve set pressure P1, the common oil extraction of double pump.When pressure was higher than P1, low pressure pump had only the outside oil extraction of high-pressure service pump by low pressure relief valve overflow oil return, realized low pressure and mass flow, the purpose of high-pressure low-flow.
This structure pump has two defectives: the one, at pressure during greater than P1, though the not outside fuel feeding of low pressure pump, but still the hand power that consumes the operator, limited the pressure of pump, the scope of design, the 2nd of flow, the sealing of high pressure draining valve and low draining valve, all influential to performances such as the pressurize of pump, volumetric efficiencies.
The purpose of this utility model provide a kind of simple in structure, reliability is high, can overcome the new design of existing product defective again.
For reaching above-mentioned purpose, by the following technical solutions: total oil sucting valve 3, suction fuel tap 2, total draining valve 1 are one-way valve.The filler opening of total oil sucting valve 3 connects fuel tank, the filler opening of oil outlet and suction fuel tap 2, and low pressure pump chamber 9 (being the big plunger of duplex plunger 7 and the volume of the pump housing 6 formation) and unloading overflow valve 4 link to each other.Suction fuel tap 2 is promptly made the draining valve of low pressure pump, makes the oil sucting valve of high-pressure service pump again, its oil outlet and high pressure pump chamber 10 (being the small plunger of duplex plunger 7 and the volume that the pump housing 6 forms), and the filler opening of total draining valve 1 and high-pressure overflow valve 5 link to each other.The pressure of unloading overflow valve 4 control low pressure pumps, its control oil draws the oil outlet from total draining valve 1.
Be described in further detail below in conjunction with technological scheme and accompanying drawing.
During hand oil pump work, duplex plunger 7 moves upward under the drive of rocking bar, and fluid is inhaled into high pressure pump chamber 10 and the low pressure pump chamber 9 that forms vacuum.When duplex plunger 7 moved downward, when pressure was lower than the pressure P 1 of unloading overflow valve 4 setting, the fluid of the fluid of low pressure pump chamber 9 and high pressure pump chamber 10 together was discharged from total draining valve 1, and in this process, suction fuel tap 2 is in opening state.When pressure was higher than P1, unloading overflow valve 4 was opened, and the fluid of low pressure pump chamber 9 is by unloading overflow valve 4 direct oil returns.So just realized the common oil extraction of double pump when pressure is lower than P1, at pressure during greater than P1, high-pressure service pump oil extraction and the purpose of low pressure pump no-load oil return, the hand power that the low pressure pump part does not consume the operator has enlarged the scope of design of pump delivery, pressure parameter.And this structure has only the sealing of total draining valve 3 influential to pressurize, the volumetric efficiency of pump, has reduced unfavorable link, promptly simplifies the structure and has improved reliability.
Claims (1)
1. one kind high, low pressure duplex hand oil pump, by total draining valve 1, suction fuel tap 2, total oil sucting valve 3, compositions such as unloading overflow valve 4 pump housings 6 and duplex plunger 7, it is characterized in that: the filler opening of total oil sucting valve 3 connects fuel tank, the filler opening of oil outlet and suction fuel tap 2, low pressure pump chamber 9 and unloading overflow valve 4 link to each other, suction fuel tap 2 is promptly made the draining valve of low pressure pump and is made the high-pressure service pump oil sucting valve again, its oil outlet and high pressure pump chamber 10, the filler opening of total draining valve 1 and high-pressure overflow valve 5 link to each other, with the pressure of unloading overflow valve 4 control low pressure pumps, its control oil draws the oil outlet from total draining valve 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99215386 CN2378549Y (en) | 1999-07-02 | 1999-07-02 | High and low pressure double hand-operated oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99215386 CN2378549Y (en) | 1999-07-02 | 1999-07-02 | High and low pressure double hand-operated oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2378549Y true CN2378549Y (en) | 2000-05-17 |
Family
ID=34007338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99215386 Expired - Fee Related CN2378549Y (en) | 1999-07-02 | 1999-07-02 | High and low pressure double hand-operated oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2378549Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104743101A (en) * | 2015-03-30 | 2015-07-01 | 中国民用航空飞行学院 | Navigation aircraft landing gear folding and unfolding system |
| CN109187200A (en) * | 2018-10-13 | 2019-01-11 | 西安航天动力测控技术研究所 | A kind of side crops industry manual loading experimental rig for test of static strength |
| CN110657079A (en) * | 2019-09-10 | 2020-01-07 | 河南科技大学 | Double-speed manual pressure pump for long-stroke hydraulic cylinder hydraulic device |
-
1999
- 1999-07-02 CN CN 99215386 patent/CN2378549Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104743101A (en) * | 2015-03-30 | 2015-07-01 | 中国民用航空飞行学院 | Navigation aircraft landing gear folding and unfolding system |
| CN109187200A (en) * | 2018-10-13 | 2019-01-11 | 西安航天动力测控技术研究所 | A kind of side crops industry manual loading experimental rig for test of static strength |
| CN110657079A (en) * | 2019-09-10 | 2020-01-07 | 河南科技大学 | Double-speed manual pressure pump for long-stroke hydraulic cylinder hydraulic device |
| CN110657079B (en) * | 2019-09-10 | 2021-09-03 | 河南科技大学 | Double-speed manual pressure pump for long-stroke hydraulic cylinder hydraulic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201083213Y (en) | Super-high-pressure hydraulic pump station | |
| US6206663B1 (en) | Piston pump | |
| CN201439746U (en) | Air compressor | |
| CN205013264U (en) | Compressor tolerance infinitely variable control system | |
| CN101382141A (en) | Self-suction centrifugal pump | |
| CN2378549Y (en) | High and low pressure double hand-operated oil pump | |
| CN109209851A (en) | A kind of compressor operation control device | |
| CN200978782Y (en) | Piston pump for high-pressure cleaning device | |
| CN2861534Y (en) | Plunger pump for jetting machine | |
| CN101029634A (en) | Multi-purpose hydraulic negative-feedback pump | |
| CN2504479Y (en) | Integrated, mounting and inteligent electric lubricating pump | |
| CN2534380Y (en) | Oil fuel supply pump for diesel engine | |
| CN2751168Y (en) | Energy-saving accelerating system for big-diameter hydraulic cylinder | |
| CN2052458U (en) | Energy saving hydraulic pressure installation | |
| CN201851428U (en) | Ultrahigh pressure oil pump with overflow structure | |
| CN1153903C (en) | Fuel oil pump for diesel engine | |
| CN2923069Y (en) | Water-saving type cold-water high-pressure cleaning machine | |
| CN2888148Y (en) | Portable energy-saving emulsion mobile pump station | |
| CN208503138U (en) | A kind of energy conservation pneumatic hydraulic system | |
| CN208719067U (en) | A kind of novel frame hydraulic station structure | |
| CN220337024U (en) | Three guide pillar ceramic plunger pump drive arrangement of energy-saving type of reducing consumption | |
| CN213144708U (en) | Gas compressor | |
| CN2703146Y (en) | Vertical self-priming pump | |
| CN203189175U (en) | Fuel injection pump automatically exhausting entrained air in fuel injection pump | |
| CN211692998U (en) | Novel wet blasting machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |