CN202194888U - Hydraulic flush valve - Google Patents
Hydraulic flush valve Download PDFInfo
- Publication number
- CN202194888U CN202194888U CN2011202907142U CN201120290714U CN202194888U CN 202194888 U CN202194888 U CN 202194888U CN 2011202907142 U CN2011202907142 U CN 2011202907142U CN 201120290714 U CN201120290714 U CN 201120290714U CN 202194888 U CN202194888 U CN 202194888U
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- CN
- China
- Prior art keywords
- valve
- temperature
- flush valve
- hydraulic pressure
- hydraulic
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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.)
- Expired - Fee Related
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- Temperature-Responsive Valves (AREA)
- Servomotors (AREA)
Abstract
The utility model relates to a hydraulic flush valve, which comprises a first cavity arranged at the lower end of an oil inlet and a second cavity positioned at the upper end of an oil overflowing port. The first cavity is provided with a temperature collection port which is provided with a temperature sensor. A proportion flow valve is connected in the second cavity and connected with the temperature sensor through a signal amplifier. The hydraulic flush valve can detect temperature of a hydraulic system in real time mode and can continue adjusting a throttling port of the hydraulic flush valve according to the temperature. When a crane just starts to work and oil temperature of the system is low, the throttling port of the flush valve is in a closed state, and no oil liquid overflows front an oil outlet of the flush valve. The flush valve has the advantages of being energy-saving, compact in structure, convenient to maintain and the like.
Description
Technical field
The utility model relates to a kind of hydraulic pressure flushing valve, a kind of specifically flushing valve that is used for the deck crane closed type hydraulic system.
Background technique
The Closed Hydraulic transmission has become one of the development trend in fields such as deck crane at present; It has advantages such as compact structure, stable drive, transmission efficiency height, no throttling and spill losses; But closed type hydraulic system is prone to heating, generally can increase flush loop to quicken heat exchange.Working connection high pressure side hydraulic oil promotes the loop flushing valve spool, and the hydraulic oil of low voltage side overflows through loop flushing valve, gets into radiator heat-dissipation.Simultaneously, cover a part of cold oil to the working connection low voltage side, to reduce the temperature of system's fluid through slippage pump.Mainly there is following defective in existing hydraulic pressure flushing valve: 1) as long as the hoist working connection has had certain pressure reduction; The flushing valve spool will move; The hydraulic oil of working connection low voltage side overflows from the oil outlet of flushing valve; And this moment, the oil liquid temperature in the system was also not high, there is no need to replace the hydraulic oil in the working connection, cause hydraulic pressure can waste; 2) hydraulic pressure flushing
The flow of valve can't be accomplished continuously adjustable according to the height of temperature in real time.
The model utility content
The utility model technical problem to be solved is, overcomes the shortcoming of existing technology, proposes a kind of hydraulic combined valve of new structure, can detect the hydraulic system temperature in real time, and regulates the restriction size of hydraulic pressure flushing valve continuously according to the height of temperature.
In order to solve above technical problem; The utility model provides a kind of hydraulic pressure flushing valve; Comprise that the filler opening lower end is provided with the hydraulic pressure flushing valve that first chamber and oil spilling mouth upper end is provided with second chamber, said first chamber is provided with the temperature acquisition mouth, on the said temperature acquisition mouth temperature transducer is installed; Be connected and installed with proportional flow control valve in said second chamber, said proportional flow control valve links to each other with said temperature transducer through signal amplifier.
The technological scheme that the utility model further limits is: aforesaid hydraulic pressure flushing valve is provided with damping hole in the said temperature acquisition mouth.
Further, aforesaid hydraulic pressure flushing valve, said proportional flow control valve comprises small coil, coil, non-magnetizer, pole shoe, push rod, throttle valve spool, limited ring and armature; Said throttle valve spool is arranged in said second chamber; Link to each other with said armature through said push rod; The end of said push rod is provided with small coil, and said armature outer ring is provided with said non-magnetizer and coil successively, and said pole shoe is arranged between the valve body of said coil and said hydraulic pressure flushing valve.
The beneficial effect of the utility model is: the utility model can detect the hydraulic system temperature in real time, regulates the restriction size of hydraulic pressure flushing valve continuously according to the height of temperature; When hoist is just started working, when the system oil temperature is also not high, the restriction of flushing valve is in closed condition, does not have fluid to overflow through the flushing valve oil outlet.That this flushing valve has is energy-conservation, compact structure, advantage such as easy to maintenance.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model principle schematic.
Among the figure: 1. small coil, 2. coil, 3. non-magnetizer, 4. pole shoe, 5. push rod, 6. throttle valve spool, 7. plug, 8. spring, 9. Fixed differential reducing valve spool, 10. temperature transducer, 11. damping holes, 12. plugs, 13. valve bodies, 14. plug-in type flushing valve spools, 15. limited rings, 16. armature.
Embodiment
Embodiment 1
A kind of hydraulic pressure flushing valve that present embodiment provides; Structure is as shown in Figure 1; Comprise that the filler opening lower end is provided with the hydraulic pressure flushing valve that the first chamber P1 and oil spilling mouth upper end is provided with the second chamber P2; The said first chamber P1 is provided with the temperature acquisition mouth, on the said temperature acquisition mouth temperature transducer 10 is installed, and in the temperature acquisition mouth, is provided with damping hole 11; Be connected and installed with proportional flow control valve in the said second chamber P2, said proportional flow control valve links to each other with said temperature transducer 10 through signal amplifier.
Proportional flow control valve comprises small coil 1, coil 2, non-magnetizer 3, pole shoe 4, push rod 5, throttle valve spool 6, limited ring 15 and armature 16; Said throttle valve spool is arranged in the said second chamber P2; Link to each other with said armature through said push rod; The end of said push rod is provided with small coil, and said armature outer ring is provided with said non-magnetizer and coil successively, and said pole shoe is arranged between the valve body 13 of said coil and said hydraulic pressure flushing valve.
The working principle of the utility model is following:
Hydraulic pressure flushing valve A mouth connects the working connection high pressure, the B mouth connects working connection low pressure; Then working connection high pressure side hydraulic oil promotes plug-in type flushing valve spool 14; The hydraulic oil of low voltage side overflows through flushing valve, gets into the P1 chamber, through the valve port of Fixed differential reducing valve; Pressure reduces to pB (P2 cavity pressure) by pA (P1 cavity pressure), flows out to the P3 mouth through the throttle valve valve port then.When the pressure p C of P3 mouth increased, the power that acts on Fixed differential reducing valve spool 9 left ends also increased thereupon, spool disequilibrium and moving to right.So the valve port of Fixed differential reducing valve increases, the liquid resistance reduces (decompression that is reduction valve reduces), and pB is also increased, up to Fixed differential reducing valve spool 9 till new position obtains balance.So when pC increased, pB also increased, its difference remains unchanged basically.In like manner, when pA increases, because spool has little time motion at the beginning; The liquid resistance of reduction valve does not change; So pB also increases in a flash at this, Fixed differential reducing valve spool 9 reduces the valve port of Fixed differential reducing valve because of disequilibrium moves to left; The liquid resistance increases makes pB reduce again, so △ p=pB-pC still remains unchanged.Because the forward and backward pressure reduction of throttle valve can remain unchanged, thereby keep the stable of flow.According to the big I of difference of the feedback temperature of temperature transducer 10 and the setting temperature size of control orifice pro rata, thus the flooded traffic of control flushing valve.When the feedback temperature of TEMP during less than setting temperature, coil 2 must not electricity, and the hydraulic oil of working connection low voltage side can not overflow from the P3 mouth.
Except that the foregoing description, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (3)
1. hydraulic pressure flushing valve; Comprise that the filler opening lower end is provided with the hydraulic pressure flushing valve that first chamber (P1) and oil spilling mouth upper end is provided with second chamber (P2); It is characterized in that: said first chamber (P1) is provided with the temperature acquisition mouth, on the said temperature acquisition mouth temperature transducer is installed; Be connected and installed with proportional flow control valve in said second chamber (P2), said proportional flow control valve links to each other with said temperature transducer through signal amplifier.
2. hydraulic pressure flushing valve according to claim 1 is characterized in that: be provided with damping hole in the said temperature acquisition mouth.
3. hydraulic pressure flushing valve according to claim 1 is characterized in that: said proportional flow control valve comprises small coil, coil, non-magnetizer, pole shoe, push rod, throttle valve spool, limited ring and armature; Said throttle valve spool is arranged in said second chamber (P2); Link to each other with said armature through said push rod; The end of said push rod is provided with small coil; Said armature outer ring is provided with said non-magnetizer and coil successively, and said pole shoe is arranged between the valve body of said coil and said hydraulic pressure flushing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202907142U CN202194888U (en) | 2011-08-11 | 2011-08-11 | Hydraulic flush valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202907142U CN202194888U (en) | 2011-08-11 | 2011-08-11 | Hydraulic flush valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202194888U true CN202194888U (en) | 2012-04-18 |
Family
ID=45949803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202907142U Expired - Fee Related CN202194888U (en) | 2011-08-11 | 2011-08-11 | Hydraulic flush valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202194888U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179348A (en) * | 2015-09-15 | 2015-12-23 | 宁波斯达弗液压传动有限公司 | Built-in flushing and cooling valve of hydraulic motor |
| CN110159618A (en) * | 2019-06-28 | 2019-08-23 | 无锡市钻通工程机械有限公司 | A kind of hydraulic closed flush loop |
-
2011
- 2011-08-11 CN CN2011202907142U patent/CN202194888U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179348A (en) * | 2015-09-15 | 2015-12-23 | 宁波斯达弗液压传动有限公司 | Built-in flushing and cooling valve of hydraulic motor |
| CN110159618A (en) * | 2019-06-28 | 2019-08-23 | 无锡市钻通工程机械有限公司 | A kind of hydraulic closed flush loop |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20120418 Termination date: 20170811 |