CN108916133A - A kind of booster and its supercharging device - Google Patents
A kind of booster and its supercharging device Download PDFInfo
- Publication number
- CN108916133A CN108916133A CN201810877487.XA CN201810877487A CN108916133A CN 108916133 A CN108916133 A CN 108916133A CN 201810877487 A CN201810877487 A CN 201810877487A CN 108916133 A CN108916133 A CN 108916133A
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- China
- Prior art keywords
- cavity
- runner
- supercharging device
- oil
- piston
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- 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
- 238000005086 pumping Methods 0.000 abstract description 3
- 230000001151 other effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 28
- 239000010720 hydraulic oil Substances 0.000 description 22
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 16
- 239000002828 fuel tank Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 208000002925 dental caries Diseases 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The present invention provides a kind of supercharging devices of booster, it is characterized in that, including oil suction chamber, first cavity, second cavity, third cavity, 4th cavity and check valve, the oil suction chamber is connected with first cavity, first cavity is connected with second cavity, first piston is also installed in second cavity, second cavity is also connected with the third cavity, second cavity bottom is fixedly connected with the check valve, installing connecting rods in the third cavity, the third cavity is also connected with the 4th cavity, second piston is installed in the 4th cavity, 4th cavity is connected with second cavity.The present invention cooperates one-way high-pressure valve by oil piping system, drives the automatic faster reciprocal motion of mechanical piston, and using section than pressurization, realizes pumping rate fast, continuous uninterrupted output, high life and other effects.
Description
Technical field
The present invention relates to a kind of booster and its supercharging devices.
Background technique
In the supercharging device of hydraulic intensifier, usually using piston both ends active area difference and stress size phase
With realizing hydraulic booster, and usually by connecting rod come drive piston.This supercharging mode speed is slow, and volume is big, and sealing system is easy
Aging, life cycle is short and has higher maintenance cost.
Summary of the invention
In order to solve the above technical problems, the purpose of the present invention is to provide a kind of supercharging device of booster, using without even
The circularly-supercharged mode of bar realizes the effect that pumping rate is fast and continuously can uninterruptedly export using section than being pressurized.
Based on this, the invention proposes a kind of supercharging device of booster, including oil suction chamber, the first cavity, the second cavity,
Third cavity, the 4th cavity and check valve, the oil suction chamber are connected with first cavity, first cavity and described the
Two cavitys are connected, and first piston is also installed in second cavity, and second cavity is also connected with the third cavity,
Second cavity bottom is fixedly connected with the check valve, installing connecting rods in the third cavity, the third cavity also with institute
It states the 4th cavity to be connected, second piston is installed in the 4th cavity, the 4th cavity is connected with second cavity.
Optionally, the supercharging device further includes oil outlet chamber, and the 4th cavity is connected with the oil outlet chamber.
Optionally, the oil suction chamber is connected with first cavity by first runner.
Optionally, first cavity is connected with second cavity by second flow channel.
Optionally, second cavity is connected with the third cavity by third flow channel.
Optionally, the third cavity is connected with the 4th cavity by the 4th runner, and the 4th runner with
The junction of 4th cavity is located at the top of the 4th cavity, and the third cavity and the 4th cavity also pass through the
Five runners are connected, and the junction of the 5th runner and the 4th cavity is located at the bottom end of the 4th cavity.
Optionally, the first runner also passes through the 6th runner with the third cavity and is connected.
Optionally, the 4th cavity is connected with the oil outlet chamber by the 7th runner.
The invention also provides a kind of boosters, including supercharging device described in either segment as above.
A kind of supercharging device of booster of the invention cooperates one-way high-pressure valve by oil piping system, drives mechanical piston
Automatic faster reciprocal motion, and utilize section than pressurization, realizing pumping rate, fastly, continuously uninterruptedly output, high life are equivalent
Fruit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
Fig. 2 is the first angle the schematic diagram of the section structure of supercharging device of the embodiment of the present invention.
Fig. 3 is the second angle the schematic diagram of the section structure of supercharging device of the embodiment of the present invention.
Fig. 4 is the third angle the schematic diagram of the section structure of supercharging device of the embodiment of the present invention.
Fig. 5 is the fourth angle the schematic diagram of the section structure of supercharging device of the embodiment of the present invention.
Fig. 6 is the structural schematic diagram of filter of the embodiment of the present invention.
Description of symbols：
1, low-lift pump；2, reversal valve；3, supercharging device；4, output end；5, the first access；6, alternate path；7, third is logical
Road；8, fourth passage；9, fifth passage；
31, oil suction chamber；32, the first cavity；33, the second cavity；34, third cavity；35, the 4th cavity；36, second is unidirectional
Valve；37, oil outlet chamber.
311, first runner；321, second flow channel；331, first piston；341, connecting rod；342, third flow channel；343, the 4th
Runner；344, the 5th runner；345, the 6th runner；351, second piston；371, the 7th runner.
51, the first check valve；52, filter；53, low-pressure meter.
521, the first connector；522, shell；523, filter core；524, pedestal；525, the second connector；526, spring；527, even
Joint chair.
71, overflow valve.
91, the 6th access.
Specific embodiment
In the description of the present invention, it should be noted that the orientation or position of the instructions such as term "top", "bottom" "inner", "outside"
Setting relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is interpreted as limitation of the present invention.In addition, term " first ", " second ", " third " are used for description purposes only, and should not be understood as
Indication or suggestion relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
For the ordinary skill in the art, above-mentioned term in the present invention specific can be understood with concrete condition
Meaning.
Fig. 1 is please referred to, the present invention provides a kind of boosters, including fuel tank, low-lift pump 1, reversal valve 2,3 and of supercharging device
Output end 4, fuel tank are connected with low-lift pump 1, and low-lift pump 1 is connected with reversal valve 2, and reversal valve 2 is also connected with fuel tank, commutation
Valve 2 is connected with supercharging device 3, and supercharging device 3 is connected with output end 4, and output end 4 is also connected with reversal valve 2.Firstly,
Low-lift pump 1 pumps out hydraulic oil from fuel tank, and hydraulic oil is pressurized by reversal valve 2 into supercharging device 3, pressurized liquid
Pressure oil flows to output end 4, by output device by pressure output, to realize the effect of pressurization.
Specifically, low-lift pump 1 and reversal valve 2 are connected by the first access 5, on the first access 5 and low-lift pump 1 with
It is also connected with the first check valve 51, filter 52 and low-pressure meter 53 between reversal valve 2, and the first check valve 51, filter 52 and low
Pressure table 53 is sequentially connected；Fuel tank is connected with reversal valve 2 by alternate path 6, on alternate path 6 and in fuel tank and reversal valve
Another filter 52 is also connected between 2；First access 5 is connected with alternate path 6 by third path 7, and logical in third
Overflow valve 71 is connected on road 7.Hydraulic oil is pumped out by low-lift pump 1 into the first access 5, and the first check valve 51,52 and of filter are passed through
Low-pressure meter 53 enters reversal valve 2.First check valve 51 is set, prevents hydraulic oil from flowing back in the first access 5, low pressure is set
Table 53 can monitor oil pressure, and setting filter 52 is the cleannes in order to improve hydraulic oil, prevent impurity from flowing into hydraulic oil
Supercharging device 3 causes the failure of supercharging device 3.Alternate path 6 is that the hydraulic oil of reflux flows back to the access of fuel tank, the liquid of reflux
Pressure oil flows into alternate path 6 from reversal valve 2, flows back to fuel tank after the filtering of filter 52, realizes the recycling of hydraulic oil, mention
High economy.In addition, if the oil mass that low-lift pump 1 pumps out is excessive, third path 7 can be also flowed into, is flowed by overflow valve 71
Alternate path 6, later again can fuel tank by the stream of filter 52.
Specifically, reversal valve 2 is connected by fourth passage 8 and fifth passage 9 simultaneously with supercharging device 3；Pressurization dress
It sets and connects high pressure gauge between 3 and output end 4；Output end 4 connects the 6th access 91, and the 6th access 91 is connected with fifth passage 9
It is logical.When reversal valve 2DT1 is powered, fourth passage 8 flows into supercharging device 3 for hydraulic oil, after being pressurized using supercharging device 3,
High pressure oil flows into output end 4 and exports high pressure.When reversal valve 2DT2 is powered, the low pressure oil of fifth passage 9 passes through the 6th access 91
Output end 4 is flowed into, output end 4 is playbacked, booster is flowed back in the high pressure oil pressure release of former output end 4, then is flowed back to and changed by fourth passage 8
To valve 2, fuel tank is flowed back to finally by alternate path 6.The setting of high pressure gauge is connected between booster and output end 4 for monitoring
The oil pressure of pipeline.
Filter 52 includes the first connector 521, shell 522, filter core 523, pedestal 524 and the second connector 525, the first connector
521 connect with shell 522, and 521 internal cavities of the first connector are connected with 522 internal cavities of shell, and filter core 523 is installed on shell
522 internal cavities, shell 522 are connected with pedestal 524, and the internal cavities of shell 522 are connected with the internal cavities of pedestal 524
Logical, the second connector 525 is connected to side of the pedestal 524 far from shell 522, and the internal cavities of pedestal 524 and the second connector 525
Internal cavities be connected.Hydraulic oil needs to be filtered before entering supercharging device 3, to reduce the impurity contained in oil.Not
The hydraulic oil of filtering flows into the internal cavities of pedestal 524 from the internal cavities of the second connector 525, then empty by the inside of pedestal 524
Chamber flows into the internal cavities of shell 522, flows into 523 internal cavities of filter core by filter core 523, completes filtering.It is filtered hydraulic
Oil flows into the internal cavities of the first connector 521 from 523 internal cavities of filter core, thus hydraulic oil flows out.Shell 522 and pedestal 524
It can dismount, filter core 523 conveniently replaced in this way.It is additionally provided with cushion rubber between pedestal 524 and shell 522, has both improved sealing effect
Fruit, also increases the buffering between shell 522 and pedestal 524, reduces and is caused in disassembly process to shell 522 and pedestal 524
Loss.
Filter 52 further includes spring 526, and one end of spring 526 is connected with filter core 523, the other end of spring 526 with
Pedestal 524 is connected.Since filter core 523 is more crisp, the fixed forms such as clamping are not available, by the way that spring 526 is arranged, bullet will be utilized
The elastic force of spring 526 guarantees the stabilization of filter core 523, to guarantee the integrally-built stability of filter 52, guarantees filter effect, drop
The loss of low filter core 523.
522 internal cavities of shell also install attachment base 527, and 527 one end of attachment base is close to 523 phase of filter core, attachment base 527
The other end and 522 internal cavities of shell top, attachment base 527 has through-hole, and through-hole is connected with the internal cavities of filter core 523
Logical, through-hole is also connected with the internal cavities of the first connector 521.Cushion rubber, spring are equipped between attachment base 527 and filter core 523
Filter core 523 is pressed on attachment base 527 by 526 elastic force, by the way that cushion rubber is arranged, it is ensured that sealing effect also protects filter
The integrality of core 523.Pass through the logical of attachment base 527 in 523 internal cavities of filter core through the filtered hydraulic oil of filtration core 523
Hole, flows into the internal cavities of the first connector 521, therefore hydraulic oil flows out.
It is noted that the top of 524 internal cavities of pedestal is equipped with oil-through-hole, the internal cavities and shell of pedestal 524
522 internal cavities are connected by oil-through-hole.The non-mistake of 524 internal cavities of pedestal is flowed by 525 internal cavities of the second connector
The hydraulic oil of filter flows into 522 internal cavities of shell by oil-through-hole, then is filtered by filter core 523.
Supercharging device 3 includes oil suction chamber 31, the first cavity 32, the second cavity 33, third cavity 34, the 4th cavity 35 and the
Two check valves 36, oil suction chamber 31 are connected with the first cavity 32, and the first cavity 32 is connected with the second cavity 33, the second cavity 33
First piston 331 is inside also installed, the second cavity 33 is also connected with third cavity 34, and 33 bottom of the second cavity is fixedly connected with second
Check valve 36, installing connecting rods 341 in third cavity 34, third cavity 34 is also connected with the 4th cavity 35, in the 4th cavity 35
Second piston 351 is installed, the 4th cavity 35 is connected with the second cavity 33.Oil suction chamber 31 and the first cavity 32 pass through first runner
311 are connected, and the first cavity 32 is connected with the second cavity 33 by second flow channel 321, the second cavity 33 and third cavity 34
It is connected by third flow channel 342, third cavity 34 is connected with the 4th cavity 35 by the 4th runner 343, and the 4th runner
343 and the 4th the junction of cavity 35 be located at the top of the 4th cavity 35, third cavity 34 and the 4th cavity 35 also pass through the 5th
Runner 344 is connected, and the junction of the 5th runner 344 and the 4th cavity 35 is located at the bottom end of the 4th cavity 35.Filtered liquid
Pressure oil enters booster, flows into the first cavity 32 from oil suction chamber 31 by first runner 311, then flow by second flow channel 321
Second cavity 33, pushes up first piston 331, and first piston 331 moves up to the exposing of third flow channel 342, hydraulic oil because
This flows into third flow channel 342, enters back into third cavity 34.Hydraulic oil pushes connecting rod 341 to move upwards in third cavity 34, until
4th runner 343 exposes, and hydraulic oil enters the 4th runner 343, is finally connected to from the top of the 4th cavity 35 with the 4th runner 343
Connectivity part, flow into the 4th cavity 35, push the 4th cavity 35 in second piston 351 move downward.First runner 311 and
Three cavitys 34 are also connected by the 6th runner 345.Oil pressure increases in 4th cavity 35, after hydraulic oil flows into the 6th runner 345
Third cavity 34 is flowed into, connecting rod 341 is pushed to move downward, until exposing the 5th runner 344.Hereafter hydraulic oil passes through the 5th runner
344, the connectivity part of bottom end and the 5th runner 344 from the 4th cavity 35 flows into the 4th cavity 35, pushes second piston 351 upward
Movement, the oil pressure in the 4th cavity 35 is further promoted.This process iterative cycles, until the high pressure in the 4th cavity 35 passes
Be handed in the second cavity 33 and further pressurize, and the high pressure in the second cavity 33 be higher than second one-way valve 36 setting value, first
Piston 331 goes out second one-way valve 36, by High voltage output.
Supercharging device 3 further includes oil outlet chamber 37, and the 4th cavity 35 is connected with oil outlet chamber 37.And the 4th cavity 35 with it is fuel-displaced
Chamber 37 is connected by the 7th runner 371.After High voltage output, hydraulic oil flows into oil outlet chamber 37 by the 7th runner 371, thus
Flow out supercharging device 3.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and replacement can also be made, these are improved and replacement
Also it should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of supercharging device of booster, which is characterized in that including oil suction chamber, the first cavity, the second cavity, third cavity,
4th cavity and check valve, the oil suction chamber are connected with first cavity, first cavity and the second cavity phase
It being connected to, first piston is also installed in second cavity, second cavity is also connected with the third cavity, and described second
Cavity bottom is fixedly connected with the check valve, installing connecting rods in the third cavity, and the third cavity is also empty with the described 4th
Chamber is connected, and second piston is installed in the 4th cavity, and the 4th cavity is connected with second cavity.
2. the supercharging device of booster according to claim 1, which is characterized in that the supercharging device further includes fuel-displaced
Chamber, the 4th cavity are connected with the oil outlet chamber.
3. the supercharging device of booster according to claim 2, which is characterized in that the oil suction chamber and first cavity
It is connected by first runner.
4. the supercharging device of booster according to claim 2, which is characterized in that first cavity and second sky
Chamber is connected by second flow channel.
5. the supercharging device of booster according to claim 2, which is characterized in that second cavity and the third are empty
Chamber is connected by third flow channel.
6. the supercharging device of booster according to claim 2, which is characterized in that the third cavity and the 4th sky
Chamber is connected by the 4th runner, and the junction of the 4th runner and the 4th cavity is located at the top of the 4th cavity
End, the third cavity also pass through the 5th runner with the 4th cavity and are connected, the 5th runner and the 4th cavity
Junction be located at the bottom end of the 4th cavity.
7. the supercharging device of booster according to claim 3, which is characterized in that the first runner and the third are empty
Chamber also passes through the 6th runner and is connected.
8. the supercharging device of booster according to claim 3, which is characterized in that the 4th cavity and the oil outlet chamber
It is connected by the 7th runner.
9. a kind of booster, which is characterized in that including supercharging device as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810877487.XA CN108916133A (en) | 2018-08-03 | 2018-08-03 | A kind of booster and its supercharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810877487.XA CN108916133A (en) | 2018-08-03 | 2018-08-03 | A kind of booster and its supercharging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108916133A true CN108916133A (en) | 2018-11-30 |
Family
ID=64394028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810877487.XA Pending CN108916133A (en) | 2018-08-03 | 2018-08-03 | A kind of booster and its supercharging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108916133A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3722619A1 (en) * | 2019-04-11 | 2020-10-14 | Piston Power s.r.o. | Hydraulic pressure amplifier arrangement |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000087902A (en) * | 1998-07-14 | 2000-03-28 | Masabumi Isobe | Cylinder device having pressure intensifying mechanism operated by change of pressure |
| US7194859B1 (en) * | 2005-10-18 | 2007-03-27 | Btm Corporation | Intensifier |
| CN102287407A (en) * | 2011-09-19 | 2011-12-21 | 宁波汉商液压有限公司 | Double-action reciprocating hydraulic booster |
| CN102383769A (en) * | 2011-10-14 | 2012-03-21 | 上海大学 | Power compensation type hydraulic pressurizing water injection system |
| CN203272272U (en) * | 2013-04-26 | 2013-11-06 | 谢国辉 | Ultrahigh pressure supercharger |
| WO2015136371A2 (en) * | 2014-03-11 | 2015-09-17 | Hydr-Auto (Yt) Co., Ltd. | Two-stage hydraulic booster device for a mold functional component |
| KR20160062437A (en) * | 2014-11-25 | 2016-06-02 | 서호덕 | A hydraulic cylinder can self boosting |
| CN208816421U (en) * | 2018-08-03 | 2019-05-03 | 广州番禺职业技术学院 | A kind of booster and its supercharging device |
-
2018
- 2018-08-03 CN CN201810877487.XA patent/CN108916133A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000087902A (en) * | 1998-07-14 | 2000-03-28 | Masabumi Isobe | Cylinder device having pressure intensifying mechanism operated by change of pressure |
| US7194859B1 (en) * | 2005-10-18 | 2007-03-27 | Btm Corporation | Intensifier |
| CN102287407A (en) * | 2011-09-19 | 2011-12-21 | 宁波汉商液压有限公司 | Double-action reciprocating hydraulic booster |
| CN102383769A (en) * | 2011-10-14 | 2012-03-21 | 上海大学 | Power compensation type hydraulic pressurizing water injection system |
| CN203272272U (en) * | 2013-04-26 | 2013-11-06 | 谢国辉 | Ultrahigh pressure supercharger |
| WO2015136371A2 (en) * | 2014-03-11 | 2015-09-17 | Hydr-Auto (Yt) Co., Ltd. | Two-stage hydraulic booster device for a mold functional component |
| KR20160062437A (en) * | 2014-11-25 | 2016-06-02 | 서호덕 | A hydraulic cylinder can self boosting |
| CN208816421U (en) * | 2018-08-03 | 2019-05-03 | 广州番禺职业技术学院 | A kind of booster and its supercharging device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3722619A1 (en) * | 2019-04-11 | 2020-10-14 | Piston Power s.r.o. | Hydraulic pressure amplifier arrangement |
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