CN206487698U - A kind of constant displacement pump energy-saving hydraulic system - Google Patents
A kind of constant displacement pump energy-saving hydraulic system Download PDFInfo
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- CN206487698U CN206487698U CN201720115072.XU CN201720115072U CN206487698U CN 206487698 U CN206487698 U CN 206487698U CN 201720115072 U CN201720115072 U CN 201720115072U CN 206487698 U CN206487698 U CN 206487698U
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- Prior art keywords
- valve
- displacement pump
- constant displacement
- shuttle
- overflow valve
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 239000002243 precursor Substances 0.000 claims abstract description 17
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000002828 fuel tank Substances 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a kind of constant displacement pump energy-saving hydraulic system, when executing agency is failure to actuate, the signal hydraulic fluid port of shuttle valve and fuel tank are connected using the Y type Median Functions of reversal valve, now the Remote control valve valve port of precursor overflow valve is opened, precursor overflow valve overflow under low pressure, constant displacement pump Low-pressure load discharge is realized, a large amount of power, the energy are saved, while avoiding a large amount of heat production of equipment；When executing agency acts, the high-voltage oil liquid on any one side flows into shuttle valve signal hydraulic fluid port, the Remote control valve valve port of precursor overflow valve is closed, and pressure when conversion is run by precursor overflow valve itself set pressure regulating system, hydraulic system can efficiently return to high-pressure work state.The utility model is used for hydraulic circuit field.
Description
Technical field
The utility model is related to hydraulic circuit field, more particularly to a kind of constant displacement pump energy-saving hydraulic system.
Background technology
In lathe and engineering machinery, traditional Constant Pump System, as shown in Figure 4, using extensive.Traditional constant displacement pump
System is typically made up of constant displacement pump, directional control valve and pressure-control valve, and this system effectiveness is low, and oil pump persistently exports big flow
High-voltage oil liquid, both along with substantial amounts of power loss so that energy waste is serious, equipment operating cost remains high, also companion
As substantial amounts of heat is produced.
Constant displacement pump in many executing agency's parallel systems of tradition is when needing oil-feed pump pressure release, typically using independent unloading valve
Or multiple directional control valve, but the use of both has limitation：Single unloading valve off-load needs extra accurate application control
Signal could realize off-load, can not realize oil pump off-load when inconvenience is accurate provides off-load signal, for example manual or machine
The occasion of dynamic control reversal valve commutation；Banked direction control valves relief circuit cost is high, and inconvenient for use, and volume is big, without stacking pattern and
Inserting form.
Utility model content
When the purpose of this utility model is to provide a kind of valve element in reversal valve and is in middle position, executing agency and is failure to actuate,
Hydraulic system can automatically switch to the constant displacement pump energy-saving hydraulic system of Low-pressure load discharge operating mode.
Technical solution adopted in the utility model is：
A kind of constant displacement pump energy-saving hydraulic system, including be sequentially connected constant displacement pump, check valve, with Y type Median Functions
Reversal valve, hydraulic lock and executing agency, the line branches connection precursor overflow valve formation pressure between the constant displacement pump and reversal valve
Power sets up loop, shuttle valve is provided between hydraulic lock and reversal valve, two pressure oil ports of shuttle valve bridge the work of reversal valve respectively
Hydraulic fluid port, is provided with direct acting overflow valve between shuttle valve and precursor overflow valve, the oil-out of direct acting overflow valve connects the signal oil of shuttle valve
Mouthful, the oil inlet of direct acting overflow valve connects the remote control orifice of precursor overflow valve.
The improvement of above-mentioned technical proposal is further used as, hydraulic lock includes two hydraulic control one-way valves for forming interlocking.
The improvement of above-mentioned technical proposal is further used as, reversal valve uses the three position four-way directional control valve of Y types.
A kind of many executing agency's parallel systems using above-mentioned constant displacement pump energy-saving hydraulic system, including some commutations in parallel
Valve, each reversal valve connects shuttle valve, hydraulic lock and executing agency with this, the signal hydraulic fluid port per shuttle valve described in any two with it is upper
The pressure oil port connection of position shuttle valve, the continuous shuttle valve that merges makes the signal hydraulic fluid port of upper shuttle valve connect direct acting overflow valve.
The beneficial effects of the utility model：This constant displacement pump energy-saving hydraulic system utilizes the Y type Median Functions of reversal valve, makes shuttle
The signal hydraulic fluid port of valve is connected with fuel tank, and now the oil-out of direct acting overflow valve is connected with fuel tank, and the valve port of overflow valve is opened, guide
The low voltage control that the operating pressure of overflow valve is set by direct acting overflow valve, oil pump realizes Low-pressure load discharge, saves a large amount of power, energy
Source, it is to avoid a large amount of heat production of equipment, it is adaptable to full-automatic, semi-automatic and manual control occasion, is particularly suitable for use in manual or motor-driven control
The occasion of reversal valve commutation processed；This loop structure is simple, and with low cost, safety and stability is easy to maintenance, utilizes Normal hydraulic valve member
It can set up, legacy system, which also need to only increase a small amount of hydraulic valve piece, can complete reducing energy consumption and enlarging.
Brief description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings：
Fig. 1 is the circuit diagram of single actuator system of the present embodiment；
Fig. 2 is the circuit diagram of double executing agency's parallel systems of the present embodiment；
Fig. 3 is the circuit diagram of many executing agency's parallel systems of the present embodiment；
Fig. 4 is the circuit diagram of traditional double executing agency's parallel systems of the present embodiment.
Embodiment
Reference picture 1, the utility model is a kind of constant displacement pump energy-saving hydraulic system, including the constant displacement pump 1, unidirectional being sequentially connected
Valve 2, the reversal valve 6 with Y type Median Functions, hydraulic lock and executing agency 8, the line branches between constant displacement pump 1 and reversal valve 6
Connect the formation of precursor overflow valve 3 pressure setting loop, the specially oil-out of constant displacement pump 1 connection check valve 2, after connection is changed respectively again
To valve 6 and precursor overflow valve 3, the oil-out of check valve 2 is provided with pressure gauge 4.
Shuttle valve 5 is provided between hydraulic lock and reversal valve 6, two pressure oil ports of shuttle valve 5 bridge the work of reversal valve 6 respectively
Hydraulic fluid port, is provided with direct acting overflow valve 9, the oil-out connection of direct acting overflow valve 9 between the signal hydraulic fluid port of shuttle valve 5 and precursor overflow valve 3
The signal hydraulic fluid port of shuttle valve 5, the oil inlet of direct acting overflow valve 9 connects the remote control orifice of precursor overflow valve 3.
As preferred embodiment, hydraulic lock includes two hydraulic control one-way valves 7 for forming interlocking.
The oil-out of wherein check valve 2 is respectively communicated with the P mouths of reversal valve and the oil inlet of precursor overflow valve 3, due to pressure
It is known technology to set up loop and hydraulic lock, be will not be described here.
As preferred embodiment, reversal valve 6 uses the three position four-way directional control valve of Y types；Certainly can also be using Y types
3-position 4-way proportional reversing valve, realizes the function that system pressure follows load force to change, and flow-compensated during proportionality velocity modulation
Function.
The Median Function of the reversal valve 6 of Y types is structurally characterized in that valve element is in middle position, and oil inlet is closed, two actuator ports
Connected with oil return opening.Shuttle valve 5 is structurally characterized in that signal hydraulic fluid port is always turned on pressure highest oil inlet.
This constant displacement pump energy-saving hydraulic system is when executing agency 8 is failure to actuate, and hydraulic lock, which pins executing agency 8, prevents adverse current,
Using the Y type Median Functions of reversal valve 6, the signal hydraulic fluid port and fuel tank for making shuttle valve 5 are connected, now the oil-out of direct acting overflow valve 9
Connected with fuel tank, the valve port of direct acting overflow valve 9 is opened, the low pressure that the operating pressure of precursor overflow valve 3 is set by direct acting overflow valve 9
Control, oil pump realizes Low-pressure load discharge, a large amount of power, the energy is saved, while avoiding a large amount of heat production of equipment.
When executing agency 8 acts, the high-voltage oil liquid on any one side flows through shuttle valve 5, locked direct acting overflow valve 9, i.e., now
Direct acting overflow valve 9 is not turned on, and the remote control orifice of precursor overflow valve 3 is blocked, and then is changed by itself regulating system of precursor overflow valve 3
Oil pressure during operation, hydraulic system can efficiently return to high-pressure work state.
Direct acting overflow valve 9 sets pressure as 0.5MPa in the present embodiment, and oil pump can be achieved and is unloaded under 0.5MPa low pressure
Lotus saves.Meanwhile, the setting pressure of direct acting overflow valve 9 both can not be too high or cannot be too low.During the valve element of reversal valve 6 is in
During position, if setting hypertonia, oil pump off-load pressure is uprised, energy-saving effect is poor；If setting pressure it is low, shuttle valve 5 act it is insensitive,
System is caused to play pressure speed slowly, the low-response of executing agency 8.
Reference picture 2 and Fig. 4, second embodiment of this practicality are double executing agencies parallel system.In the base of system shown in Figure 1
On plinth, then a reversal valve 6 in parallel and two shuttle valves 5 can quickly complete the enlarging of constant displacement pump energy-saving hydraulic system.
When executing agency 8 is failure to actuate, no matter which kind of conducting state three shuttle valves 5 are in, and always having a passage makes directly
The oil-out conducting fuel tank of dynamic overflow valve 9；When executing agency 8 acts, always there is a pressure in four passages in executing agency 8
Power highest can use the locked direct acting overflow valve 9 of high-voltage oil liquid.
Reference picture 3, similarly.Signal hydraulic fluid port for some shuttle valves 5 of executing agency 8 connects the pressure of upper shuttle valve 5
Hydraulic fluid port, improves the executing agency 8 that upper shuttle valve 5 is managed layer by layer, in pyramid structure, finally only makes after merging some shuttle valves 5
The signal hydraulic fluid port of one shuttle valve 5 is connected to the oil-out of direct acting overflow valve 9, and system is automatic when realizing many executing agency's parallel operations
Off-load.
Certainly, the design is created and is not limited to above-mentioned embodiment, and the combination of the various embodiments described above different characteristic also may be used
To reach good effect.Those skilled in the art can also make on the premise of without prejudice to the utility model spirit
With deformation or replacement, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (4)
1. a kind of constant displacement pump energy-saving hydraulic system, it is characterised in that：Including the constant displacement pump being sequentially connected（1）, check valve（2）, tool
There is the reversal valve of Y type Median Functions（6）, hydraulic lock and executing agency（8）, the constant displacement pump（1）With reversal valve（6）Between pipe
Line branch connects precursor overflow valve（3）Form pressure setting loop, the hydraulic lock and reversal valve（6）Between be provided with shuttle valve
（5）, the shuttle valve（5）Two pressure oil ports bridge reversal valve respectively（6）Actuator port, the shuttle valve（5）With guide's overflow
Valve（3）Between be provided with direct acting overflow valve（9）, the direct acting overflow valve（9）Oil-out connection shuttle valve（5）Signal hydraulic fluid port,
The direct acting overflow valve（9）Oil inlet connection precursor overflow valve（3）Remote control orifice.
2. constant displacement pump energy-saving hydraulic system according to claim 1, it is characterised in that：The hydraulic lock includes two formation
The hydraulic control one-way valve of interlocking（7）.
3. constant displacement pump energy-saving hydraulic system according to claim 1, it is characterised in that：The reversal valve（6）Using Y types
Three position four-way directional control valve（6）.
4. a kind of many executing agency's parallel systems of the constant displacement pump energy-saving hydraulic system described in usage right requirement 1, its feature exists
In：Including some reversal valves in parallel（6）, each reversal valve（6）It is all connected with shuttle valve（5）, hydraulic lock and executing agency（8）,
Per shuttle valve described in any two（5）Signal hydraulic fluid port and upper shuttle valve（5）Pressure oil port connection, continuously merge shuttle valve（5）Make most
Upper shuttle valve（5）Signal hydraulic fluid port connection direct acting overflow valve（9）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720115072.XU CN206487698U (en) | 2017-02-07 | 2017-02-07 | A kind of constant displacement pump energy-saving hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720115072.XU CN206487698U (en) | 2017-02-07 | 2017-02-07 | A kind of constant displacement pump energy-saving hydraulic system |
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| Publication Number | Publication Date |
|---|---|
| CN206487698U true CN206487698U (en) | 2017-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720115072.XU Expired - Fee Related CN206487698U (en) | 2017-02-07 | 2017-02-07 | A kind of constant displacement pump energy-saving hydraulic system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489743A (en) * | 2018-04-20 | 2018-09-04 | 浙江大学城市学院 | It is a kind of to simulate operated subway train dynamics loading equipemtn |
| CN110821775A (en) * | 2019-09-27 | 2020-02-21 | 日昌升建筑新材料设计研究院有限公司 | Multi-cylinder parallel type mine tailing slurry hydraulic pumping system |
-
2017
- 2017-02-07 CN CN201720115072.XU patent/CN206487698U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489743A (en) * | 2018-04-20 | 2018-09-04 | 浙江大学城市学院 | It is a kind of to simulate operated subway train dynamics loading equipemtn |
| CN110821775A (en) * | 2019-09-27 | 2020-02-21 | 日昌升建筑新材料设计研究院有限公司 | Multi-cylinder parallel type mine tailing slurry hydraulic pumping system |
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Effective date of registration: 20200119 Granted publication date: 20170912 |
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| PD01 | Discharge of preservation of patent | ||
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Date of cancellation: 20230119 Granted publication date: 20170912 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170912 |