CN2044011U - Superpressure double pressure manual pump - Google Patents
Superpressure double pressure manual pump Download PDFInfo
- Publication number
- CN2044011U CN2044011U CN 88217530 CN88217530U CN2044011U CN 2044011 U CN2044011 U CN 2044011U CN 88217530 CN88217530 CN 88217530 CN 88217530 U CN88217530 U CN 88217530U CN 2044011 U CN2044011 U CN 2044011U
- Authority
- CN
- China
- Prior art keywords
- pressure
- utility
- model
- cut down
- superpressure
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 2
- 230000003068 static effect Effects 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model relates to a superpressure double pressure manual pump which is used for the manual hydraulic power source of various hydraulic constructional devices. The existing various manual pumps has the advantages of short service life, bad reliability and complicated structure. The utility model adopts the structure of high and low pressure piston rigid connection integration, an automatically detachable pressure limiting valve and a static pressure balanced superhigh pressure reversal valve; thus, the utility model has the advantages of structure simplifying, cost reducing, service life and reliability enhancing; in addition, the utility model is characterize by adopting variable tanks with the coupling dimensions, and the range of use is enlarged.
Description
The utility model relates to muscle-powered pump technical field, is applied on all kinds of construction equipments.
The ultrahigh pressure hand pump is applicable to the usage requirement of various hydraulic tools under power free open-air building site operation or interim case of emergency, and there is the piston poor rigidity in existing hand pump, and working life is short, and it is unreliable that unloading is cut down in pressure limiting, and phenomenons such as complex structure are cut down in commutation.
The purpose of this utility model is that one of design is simple in structure, good manufacturability, the two pressure hand pumps of the ultrahigh pressure of long service life.
The method that solves the utility model task is to adopt the structure of high low pressure piston rigid joint one, improves the piston rigidity, thereby improves the working life of pump; The sealing that pressure limiting is cut down cuts down core and cut down line is adopted the form (cutting down a conical surface is 60 °, and cutting down the core conical surface is 59 °) of conical surface differential seat angle to make and cut down core and cut down seat an excellent contact line, thereby has improved the reliability that unloading is cut down in pressure limiting; Cut down the usefulness of doing commutation with the static balance commutation, can be from motive sealing, pressure raises and seals also corresponding raising, certain leakage is arranged in the gap, form one deck oil film between the sealing minute surface, can reduce and pull moment, have simple in structurely, long service life is operated light advantage.
Accompanying drawing is a structural representation of the present utility model, and I, II are pressure oil delivery outlet and the oil return inlet opening of being handled by selector valve among the figure, and III is a fuel tank fluid entry port; 1. be pressure-limit valve, 2,3. be in line check valve, 4. be rigidly connected big small piston, 5. be relief valve, 6. be fuel-displaced one-way valve, 7. be stop valve, 8. be selector valve, 9. for pressing bar.In conjunction with the accompanying drawings, the utility model is described further.
When manually pressing bar (9) when lifting, the big small piston 4 of rigid joint one rises, and fluid cuts down 2,3 and enters in high pressure small piston and the low pressure big piston chamber by unidirectional from fuel tank filler opening III.When pressing bar and depress, big small piston presses down, fluid unidirectionally cuts down 6 and extrudes from fuel-displaced, and oil-feed simultaneously is unidirectional to be cut down 2,3 and close two strands of fluid that output is produced by big small piston, under the load effect, pressure raises gradually, and when pressure rose to pressure limiting and cuts down 1 cracking pressure, pressure limiting was cut down 1 and opened, the fluid that big piston sucts cuts down 1 oil sump tank by pressure limiting, can reduce pressing moment like this.The high pressure small piston is still worked, and pressure continues to raise, and when pressure rose to rated working pressure, overflow was cut down 5 and opened, and delivery pressure maintains rated working pressure.
When load is double-action, cut down 8 by commutation and make the pressure oil liquid commutation, when work finished, as long as open by cutting down 7, pressure oil just pressure-reliefed to zero, and load discharges.When the delivery outlet I was pressure output, II was the oil return inlet opening, and when 8 conversions were cut down in commutation, when II was pressure output, I just was the oil return inlet opening.
The utility model has the advantages that by to piston, pressure limiting is cut down, the improvement that commutation is cut down makes the Superpressure double pressure manual pump simplified structure, reduces cost, and has improved service life and reliability. Its another advantage is that the tank design of manual pump is the variable fuel tank of same connection size, and the store oil amount can be designed to from 3 be raised to five kinds of different sizes of 10 liters as required, thereby has enlarged the scope of application.
Claims (2)
1, the two pressure hand pumps of ultrahigh pressure have and manually press the big small piston 4 of bar, and 1 composition such as grade is cut down in pressure limiting, and feature of the present utility model is: big small piston adopts the rigid construction that connects one, and the core that cuts down that pressure limiting is cut down adopts conical surface differential seat angle structure with the sealing of cutting down line.
2, be the described ultrahigh pressure hand pump of claim 1, the angle that it is characterized in that sealing cone is that to cut down seat be 60 degree, cuts down core and be 59 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88217530 CN2044011U (en) | 1988-09-20 | 1988-09-20 | Superpressure double pressure manual pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88217530 CN2044011U (en) | 1988-09-20 | 1988-09-20 | Superpressure double pressure manual pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2044011U true CN2044011U (en) | 1989-09-06 |
Family
ID=4850066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88217530 Pending CN2044011U (en) | 1988-09-20 | 1988-09-20 | Superpressure double pressure manual pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2044011U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807233A (en) * | 2014-01-24 | 2014-05-21 | 大连液压件有限公司 | High-low pressure manual power source |
| CN106168202A (en) * | 2015-05-20 | 2016-11-30 | Ykmc有限公司 | Hydraulic double-motion hand pump |
-
1988
- 1988-09-20 CN CN 88217530 patent/CN2044011U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807233A (en) * | 2014-01-24 | 2014-05-21 | 大连液压件有限公司 | High-low pressure manual power source |
| CN106168202A (en) * | 2015-05-20 | 2016-11-30 | Ykmc有限公司 | Hydraulic double-motion hand pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |