CN106286476A - A kind of integrated form relief valve group - Google Patents
A kind of integrated form relief valve group Download PDFInfo
- Publication number
- CN106286476A CN106286476A CN201610643116.6A CN201610643116A CN106286476A CN 106286476 A CN106286476 A CN 106286476A CN 201610643116 A CN201610643116 A CN 201610643116A CN 106286476 A CN106286476 A CN 106286476A
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- China
- Prior art keywords
- fluid port
- hydraulic fluid
- valve
- hydraulic
- integrated form
- 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.)
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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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/007—Overload
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
- B60G17/056—Regulating distributors or valves for hydropneumatic systems
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- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- 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
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
Abstract
The invention discloses a kind of integrated form relief valve group, valve block is provided with overflow valve, normally closed type solenoid directional control valve, the second check valve, filter, fluid pressure reduction alarm and pressure measuring tie-in；Offering oil duct in the inside of valve block, the outer surface at valve block offers oil-in, oil return opening, actuator port and pressure measuring tie-in mounting interface；Oil-in utilizes the first hydraulic fluid port of the oil duct filter element with filter to connect, the first hydraulic fluid port connection of the first check valve of filter, connects with the first control chamber of fluid pressure reduction alarm；Pressure measuring tie-in utilizes oil duct to connect with the second hydraulic fluid port of filter element, the first check valve second hydraulic fluid port connection, fluid pressure reduction alarm second control chamber, the second check valve first hydraulic fluid port connection, overflow valve first hydraulic fluid port connection, normally closed type solenoid directional control valve first hydraulic fluid port connection；Actuator port and the second hydraulic fluid port connection of the second check valve；Oil return opening connects with the second hydraulic fluid port of overflow valve, the second hydraulic fluid port of normally closed type solenoid directional control valve.
Description
Technical field
The application relates to technical field of automation, particularly relates to a kind of integrated form relief valve group.
Background technology
Along with the development of automobile industry, the hydro pneumatic suspension with height adjusting function should on heavy type, extra heavy off road vehicle
With the most extensive, hydro pneumatic suspension needs the overload protection utilizing overflow valve to realize system under altitude mixture control operating mode, non-
Needing under altitude mixture control operating mode system pressure is carried out off-load, the fluid simultaneously tackling hydraulic system filters and protects, with
Prevent fifth wheel and the fluid backflow damage to equipment.
At present the overload protection of hydraulic system is to be realized by overflow valve, typically do not account under non-altitude mixture control operating mode be
System off-load, or use hand-operated valve to realize the off-load of system, the filter plant of fluid is filter, and fluid backflow preventer is single
To valve or hydraulic control one-way valve.Function above application in hydraulic system more disperses, and has structure loaded down with trivial details, difficult in maintenance.?
Automaticity when safeguarding hydraulic system is not enough and then causes operation inconvenience.
Therefore at hydro pneumatic suspension altitude mixture control or during being actually needed, it is badly in need of one collection pressure overload protection, pressure unloads
Lotus, anti-oil return protection, oil filtrating, the warning of fluid pressure reduction and pressure detecting and integrated form relief valve group integrally.
Summary of the invention
Not enough and then cause unhandy skill for solving in prior art automaticity when safeguarding hydraulic system
Art problem, the invention provides a kind of integrated form relief valve group, including a valve block, is provided with overflow valve, often on described valve block
Enclosed solenoid directional control valve, the second check valve, filter, fluid pressure reduction alarm and pressure measuring tie-in；Open in the inside of described valve block
If oil duct, the outer surface at described valve block offers oil-in, oil return opening, actuator port and pressure measuring tie-in mounting interface；
Described oil-in utilizes described oil duct to connect with the first hydraulic fluid port of the filter element of described filter simultaneously, described filter
The first check valve first hydraulic fluid port connection, described fluid pressure reduction alarm first control chamber connection；
Described pressure measuring tie-in utilizes described oil duct to connect with the second hydraulic fluid port of described filter element simultaneously, described first check valve
Second hydraulic fluid port connection, described fluid pressure reduction alarm second control chamber, described second check valve first hydraulic fluid port connection, described
First hydraulic fluid port connection of overflow valve, the first hydraulic fluid port connection of described normally closed type solenoid directional control valve；
Described actuator port connects with the second hydraulic fluid port of described second check valve；
Described oil return opening connects with the second hydraulic fluid port of the second hydraulic fluid port of described overflow valve, described normally closed type solenoid directional control valve.
Preferably, when described integrated form relief valve group described normally closed type solenoid directional control valve electric magnet must not electricity time, hydraulic pressure
The fluid of its exterior is along described oil-in, the first hydraulic fluid port of described filter element, the second hydraulic fluid port of described filter element, described second unidirectional
First hydraulic fluid port of valve, the second hydraulic fluid port of described second check valve enter described hydraulic system, now realize relief valve group to described
The normal fuel injection of hydraulic system.
Preferably, if the fluid flow outside described hydraulic system is excessive, the fluid outside described hydraulic system is entering
While described hydraulic system, the second hydraulic fluid port along the first hydraulic fluid port of described overflow valve, described overflow valve flows back to fuel tank, is now
Realize the pressure overload protection to hydraulic system.
Preferably, when the described normally closed type solenoid directional control valve electric magnet of described integrated form relief valve group obtains electric, described liquid
The fluid of pressure its exterior is along described oil-in, the first hydraulic fluid port of described filter element, the second hydraulic fluid port of described filter element, described normally closed type
First hydraulic fluid port of solenoid directional control valve, the second hydraulic fluid port of described normally closed type solenoid directional control valve flow back to fuel tank, and then described hydraulic system
It is in pressure unloading condition.
Preferably, described integrated form relief valve group or described integrated form are not entered into when the fluid outside described hydraulic system
When relief valve group is in pressure unloading condition, the fluid of described hydraulic system under the effect of described second check valve only with described
Second hydraulic fluid port connection of the second check valve, thus realize the anti-oil return to described hydraulic system and protect.
Preferably, when described integrated form relief valve group is in normal condition, the fluid outside described hydraulic system passes through
First hydraulic fluid port of described filter element, the second hydraulic fluid port of described filter element enter described integrated form relief valve group and described hydraulic system, enter
The fluid entering hydraulic pressure achieves filtration under the effect of described filter element.
Preferably, when the filter element of described integrated form relief valve group is in abnormal condition, outside described hydraulic system
Fluid is along described oil-in, the first hydraulic fluid port of described first check valve, second hydraulic fluid port and described second of described first check valve
First hydraulic fluid port connection of the first hydraulic fluid port of check valve, the first hydraulic fluid port of described overflow valve and described normally closed type solenoid directional control valve, this
The pressure at the two ends of Shi Suoshu fluid pressure reduction alarm exceedes force value when filter element normally works, thus triggers described fluid pressure
Difference alarming device works.
By one or more technical scheme of the present invention, the invention have the advantages that or advantage:
The invention discloses a kind of integrated form relief valve group, including a valve block, described valve block is provided with overflow valve, often
Enclosed solenoid directional control valve, the second check valve, filter, fluid pressure reduction alarm and pressure measuring tie-in；Open in the inside of described valve block
If oil duct, the outer surface at described valve block offers oil-in, oil return opening, actuator port and pressure measuring tie-in mounting interface；Described enter
Hydraulic fluid port utilizes described oil duct to connect with the first hydraulic fluid port of the filter element of described filter, the first of the first check valve of described filter
Hydraulic fluid port connects, and connects with the first control chamber of described fluid pressure reduction alarm；Described pressure measuring tie-in utilizes described oil duct with described
Second hydraulic fluid port connection of filter element, the second hydraulic fluid port connection of described first check valve, the second control of described fluid pressure reduction alarm
Chamber, the first hydraulic fluid port connection of described second check valve, the first hydraulic fluid port connection of described overflow valve, described normally closed type solenoid directional control valve
First hydraulic fluid port connection；Described actuator port connects with the second hydraulic fluid port of described second check valve；Described oil return opening overflows with described
Stream the second hydraulic fluid port of valve, the second hydraulic fluid port connection of described normally closed type solenoid directional control valve.By the cooperation of all parts, can be made this
Bright integrated form relief valve group is automatically obtained pressure overload protection, pressure off-load, anti-oil return protection, oil filtrating, fluid pressure reduction
Reporting to the police and pressure detecting is in one, easy to operate, automaticity is high.
Accompanying drawing explanation
Fig. 1 is the principle schematic of integrated form relief valve group in the embodiment of the present invention；
Fig. 2-Fig. 6 is the structural representation of integrated form relief valve group in the embodiment of the present invention.
Description of reference numerals: 1. oil-in；2. filter；3. the first check valve；4. actuator port；5. the second check valve；
6. normally closed type solenoid directional control valve；7. oil return opening；8. overflow valve；9. pressure measuring tie-in；10. fluid pressure reduction alarm；11. filter elements.
Detailed description of the invention
In order to make the application the technical staff in the technical field be more clearly understood that the application, below in conjunction with the accompanying drawings,
By specific embodiment, technical scheme is described in detail.
The present invention puts forward because being actually needed in vehicle suspension hydraulic pressure system design process.This technology can be used for realizing
The pressure overload protection of hydro pneumatic suspension hydraulic system, pressure off-load, anti-oil return protection, oil filtrating, fluid are reported to the police and pressure inspection
Survey it can also be used to other hydraulic system.
The enforcement principle of the present invention is described below.
In concrete implementation process, integrated form relief valve group includes a valve block, is provided with overflow valve on described valve block
8, normally closed type solenoid directional control valve the 6, second check valve 5, filter 2, fluid pressure reduction alarm 10 and pressure measuring tie-in 9；At described valve
Oil duct is offered in the inside of block, and the outer surface at described valve block offers oil-in 1, oil return opening 7, actuator port 4 and pressure measuring tie-in peace
Attaching mouth.
Wherein, filter 2 includes filter element 11 and the first check valve 3.
Described oil-in 1 utilizes described oil duct to connect with the first hydraulic fluid port of the filter element 11 of described filter 2, described filter
First hydraulic fluid port connection of first check valve 3 of 2, the first control chamber connection of described fluid pressure reduction alarm 10；
Described pressure measuring tie-in 9 utilizes described oil duct to connect with the second hydraulic fluid port of described filter element 11, described first check valve 3
Second hydraulic fluid port connection, described fluid pressure reduction alarm 10 second control chamber, described second check valve 5 first hydraulic fluid port connection,
First hydraulic fluid port connection of described overflow valve 8, the first hydraulic fluid port connection of described normally closed type solenoid directional control valve 6；
Described actuator port 4 connects with the second hydraulic fluid port of described second check valve 5；
Described oil return opening 7 connects with the second hydraulic fluid port of the second hydraulic fluid port of described overflow valve 8, described normally closed type solenoid directional control valve 6
Logical.
When described integrated form relief valve group described normally closed type solenoid directional control valve 6 electric magnet must not electricity time, outside hydraulic system
The fluid in portion is along described oil-in 1, the first hydraulic fluid port of described filter element 11, the second hydraulic fluid port of described filter element 11, described second unidirectional
First hydraulic fluid port of valve 5, the second hydraulic fluid port of described second check valve 5 enter described hydraulic system, now realize relief valve group to institute
State the normal fuel injection of hydraulic system.
If the fluid flow outside described hydraulic system is excessive, the fluid outside described hydraulic system is entering described hydraulic pressure
While system, the first hydraulic fluid port, the second hydraulic fluid port of described overflow valve 8 along described overflow valve 8 flow back to fuel tank, and it is right the most i.e. to realize
The pressure overload protection of hydraulic system.
When described normally closed type solenoid directional control valve 6 electric magnet of described integrated form relief valve group obtains electric, described hydraulic system
Outside fluid is along described oil-in 1, the first hydraulic fluid port of described filter element 11, the second hydraulic fluid port of described filter element 11, described normally closed type
First hydraulic fluid port of solenoid directional control valve 6, the second hydraulic fluid port of described normally closed type solenoid directional control valve 6 flow back to fuel tank, and now oil liquid pressure is relatively
Low, hydraulic system is in pressure unloading condition.
When the fluid outside described hydraulic system does not enters into described integrated form relief valve group or described integrated form relief valve
When group is in pressure unloading condition, the fluid of described hydraulic system under the effect of described second check valve 5 only with described second
Second hydraulic fluid port connection of check valve 5, thus realize the anti-oil return to hydraulic system and protect.
When described integrated form relief valve group is in normal condition, the fluid outside described hydraulic system passes through described filter element
First hydraulic fluid port of 11, the second hydraulic fluid port of described filter element 11 enter described integrated form relief valve group and described hydraulic system, enter liquid
The fluid of pressure achieves filtration under the effect of described filter element 11.
When the filter element 11 of described integrated form relief valve group is in abnormal condition (in filter element 11, fifth wheel is too much), described
Fluid outside hydraulic system along described oil-in 1, the first hydraulic fluid port of described first check valve 3, the of described first check valve 3
Two hydraulic fluid ports and described first hydraulic fluid port of the second check valve 5, the first hydraulic fluid port of described overflow valve 8 and described normally closed type solenoid directional control valve
The first hydraulic fluid port connection of 6, two ends (the first hydraulic fluid port end of the first check valve 3 and first of the most described fluid pressure reduction alarm 10
Second hydraulic fluid port end of check valve 3) pressure exceed force value when filter element 11 normally works, thus trigger described fluid pressure reduction report
Alert device 10 works.
Integrated form relief valve group designed by the present invention, is mainly concerned with the parts of seven kinds of parts: (plug-in) overflow
Valve 8, (plug-in) normally closed type solenoid directional control valve the 6, second check valve 5 (can be: plug-in one-way valve), (plug-in) filter 2
(containing filter element 11, check valve), fluid pressure reduction alarm 10, pressure measuring tie-in 9 and valve block, also have some auxiliary members: such as pipe joint, block up
First-class.
Integrated form relief valve group designed by the present invention, by by overflow valve 8 (can be: plug-in overflow valve 8), normally closed type
Solenoid directional control valve 6 (can be: plug-in normally closed type solenoid directional control valve 6), the second check valve 5 (can be: plug-in one-way valve), filtration
Device 2 (can be: plug-in filter 2, containing filter element 11, check valve), fluid pressure reduction alarm 10 and pressure measuring tie-in 9 are installed to valve block
On, and offer oil duct inside valve block, offer oil-in 1, oil return opening 7, actuator port 4 and pressure measuring tie-in peace at valve block outer surface
Attaching mouth.
The oil duct on valve block is utilized oil-in 1, filter 2 (containing filter element the 11, first check valve 3), fluid pressure reduction to be reported to the police
Device 10, overflow valve 8 connect；
Utilize oil duct on valve block by unidirectional to pressure measuring tie-in mounting interface, overflow valve 8, normally closed type solenoid directional control valve 6, second
Valve 5 connects；
Actuator port the 4, second check valve 5 is connected；
Oil return opening 7, overflow valve 8, normally closed type solenoid directional control valve 6 are connected.
By solenoid directional control valve is carried out control system of switching on or off electricity, overload protection and the pressure of the pressure to hydraulic system can be realized
Power off-load, utilizes filter 2 to realize the filtration to fluid, utilizes check valve to realize the anti-oil return to system and protects, works as system oil
Liquid is unsatisfactory for use when requiring, utilizes fluid pressure reduction alarm 10 to report to the police.This relief valve group have easy for installation, structure is simple
Singly, easy, workable and that reliability is high feature is dismantled.
When assembling, first valve block is carried out inserted valve interface, oil duct and fixing screw thread mouth and is processed, will insert during assembling
Dress formula overflow valve 8, normally closed type solenoid directional control valve the 6, second check valve 5, plug-in filter 2, fluid pressure reduction alarm 10 and survey
Crimp head 9 is installed to valve block relevant position, the most i.e. completes the assembling of integrated form relief valve group.
Utilize pressure measuring tie-in 9 that the pressure entering hydraulic system is detected.
When overflow valve the 8, second check valve 5, normally closed type solenoid directional control valve 6, filter 2 are (containing filter element the 11, first check valve
3), fluid pressure reduction alarm 10, pressure measuring tie-in 9 be when damaging, and only need to can realize the replacing to fault part with standard wrench.A whole set of
Integrated form relief valve group simple in construction, easy to control and install easily.
The structure of the present invention a kind of integrated form relief valve group is shown in Fig. 2～Fig. 6, as shown in structure chart, and normally closed type electromagnetic switch
Valve, overflow valve, check valve two are positioned at the first plane of valve block；Pressure measuring tie-in, actuator port are positioned at the second plane of valve block；Plug
Two the 3rd planes being positioned at valve block；The fixed interface of installing of valve block is positioned at the fourth plane of valve block；Filter is (containing filter element, unidirectional
Valve one), oil return opening be positioned at the 5th plane of valve block；It is the 6th flat that oil-in, fluid pressure reduction alarm, plug one are positioned at valve block
Face.
The wherein patent No.: 201410258735.4 (notification number: CN 104019073 A " pressure-control valve group, hydraulic systems
And engineering mechanical device ") quite similar with this patent, but have the difference of essence.This patent uses overflow valve 8 (2), manually controls
Valve processed, hydraulicchange-over valve, realization, to hydraulic system pressure switching under two kinds of pressure working conditions, have a huge structure, and system is pacified
The shortcoming that full property is the highest.This patent uses the integrated mode of plug-in valve member by overflow valve the 8, second check valve 5, normally closed type electromagnetism
Reversal valve 6, filter 2, pressure measuring tie-in 9, valve block and built-in oil circuit integrate, and utilize reversal valve and the combination of overflow valve 8
Application realizes pressure feed and the pressure off-load of hydraulic system, utilizes check valve to realize the work protection to load, utilizes and filter
Device 2 realizes the protection to hydraulic system, utilizes pressure checking device to realize the inspection to system working pressure or monitoring.There is knot
The advantages such as structure is compact, easy to operate.
The present invention, compared with general pressure protective device, has compact conformation, workable feature, with patent announcement
Number compare for " pressure-control valve group, hydraulic system and the engineering mechanical device " of CN 104019073 A, hand-operated valve is replaced by
Electromagnetic valve, adds the second check valve 5, plug-in normally closed type solenoid directional control valve 6, plug-in filter 2, eliminates unnecessary overflowing
Stream valve 8.The present invention has that components and parts integrated level is higher, operation is simpler, install more easily advantage simultaneously.Patent of the present invention can
It is successfully applied to hydro pneumatic suspension hydraulic system and other hydraulic system.
By one or more embodiment of the present invention, the invention have the advantages that or advantage:
The invention discloses a kind of integrated form relief valve group, including a valve block, described valve block is provided with overflow valve, often
Enclosed solenoid directional control valve, the second check valve, filter, fluid pressure reduction alarm and pressure measuring tie-in；Open in the inside of described valve block
If oil duct, the outer surface at described valve block offers oil-in, oil return opening, actuator port and pressure measuring tie-in mounting interface；Described enter
Hydraulic fluid port utilizes described oil duct to connect with the first hydraulic fluid port of the filter element of described filter, the first of the first check valve of described filter
Hydraulic fluid port connects, and connects with the first control chamber of described fluid pressure reduction alarm；Described pressure measuring tie-in utilizes described oil duct with described
Second hydraulic fluid port connection of filter element, the second hydraulic fluid port connection of described first check valve, the second control of described fluid pressure reduction alarm
Chamber, the first hydraulic fluid port connection of described second check valve, the first hydraulic fluid port connection of described overflow valve, described normally closed type solenoid directional control valve
First hydraulic fluid port connection；Described actuator port connects with the second hydraulic fluid port of described second check valve；Described oil return opening overflows with described
Stream the second hydraulic fluid port of valve, the second hydraulic fluid port connection of described normally closed type solenoid directional control valve.By the cooperation of all parts, can be made this
Bright integrated form relief valve group is automatically obtained pressure overload protection, pressure off-load, anti-oil return protection, oil filtrating, fluid pressure reduction
Reporting to the police and pressure detecting is in one, easy to operate, automaticity is high.
Although having been described for the preferred embodiment of the application, but one of ordinary skilled in the art once knowing substantially
Creative concept, then can make other change and amendment to these embodiments.So, claims are intended to be construed to bag
Include preferred embodiment and fall into all changes and the amendment of the application scope.
Obviously, those skilled in the art can carry out various change and the modification essence without deviating from the application to the application
God and scope.So, if these amendments of the application and modification belong to the scope of the application claim and equivalent technologies thereof
Within, then the application is also intended to comprise these change and modification.
Claims (7)
1. an integrated form relief valve group, it is characterised in that include a valve block, is provided with overflow valve, normally closed on described valve block
Formula solenoid directional control valve, the second check valve, filter, fluid pressure reduction alarm and pressure measuring tie-in；Offer in the inside of described valve block
Oil duct, the outer surface at described valve block offers oil-in, oil return opening, actuator port and pressure measuring tie-in mounting interface；
Described oil-in utilizes described oil duct to connect with the first hydraulic fluid port of the filter element of described filter simultaneously, the of described filter
First hydraulic fluid port connection of one check valve, the first control chamber connection of described fluid pressure reduction alarm；
Described pressure measuring tie-in utilizes described oil duct to connect with the second hydraulic fluid port of described filter element simultaneously, the second of described first check valve
Hydraulic fluid port connection, the second control chamber of described fluid pressure reduction alarm, the first hydraulic fluid port connection of described second check valve, described overflow
First hydraulic fluid port connection of valve, the first hydraulic fluid port connection of described normally closed type solenoid directional control valve；
Described actuator port connects with the second hydraulic fluid port of described second check valve；
Described oil return opening connects with the second hydraulic fluid port of the second hydraulic fluid port of described overflow valve, described normally closed type solenoid directional control valve.
2. a kind of integrated form relief valve group as claimed in claim 1, it is characterised in that when the institute of described integrated form relief valve group
State normally closed type solenoid directional control valve electric magnet must not electricity time, the fluid outside hydraulic system along described oil-in, the of described filter element
One hydraulic fluid port, the second hydraulic fluid port of described filter element, the first hydraulic fluid port of described second check valve, the second hydraulic fluid port of described second check valve enter
Enter described hydraulic system, now realize the relief valve group normal fuel injection to described hydraulic system.
3. a kind of integrated form relief valve group as claimed in claim 1, it is characterised in that if the fluid outside described hydraulic system
Flow is excessive, and the fluid outside described hydraulic system is entering while described hydraulic system the first oil along described overflow valve
Mouth, the second hydraulic fluid port of described overflow valve flow back to fuel tank, the most i.e. realize the pressure overload protection to hydraulic system.
4. a kind of integrated form relief valve group as claimed in claim 1, it is characterised in that when the institute of described integrated form relief valve group
Stating normally closed type solenoid directional control valve electric magnet when obtaining electric, the fluid outside described hydraulic system is along described oil-in, described filter element
First hydraulic fluid port, the second hydraulic fluid port of described filter element, the first hydraulic fluid port of described normally closed type solenoid directional control valve, described normally closed type electromagnetic switch
Second hydraulic fluid port of valve flows back to fuel tank, and then described hydraulic system is in pressure unloading condition.
5. a kind of integrated form relief valve group as claimed in claim 4, it is characterised in that when the fluid outside described hydraulic system
Do not enter into described integrated form relief valve group or time described integrated form relief valve group is in pressure unloading condition, described hydraulic system
Fluid only second hydraulic fluid port with described second check valve under the effect of described second check valve connect, thus realize described
The anti-oil return protection of hydraulic system.
6. a kind of integrated form relief valve group as claimed in claim 1, it is characterised in that when described integrated form relief valve group is in
During normal condition, the fluid outside described hydraulic system is entered by the second hydraulic fluid port of the first hydraulic fluid port of described filter element, described filter element
Entering described integrated form relief valve group and described hydraulic system, the fluid entering hydraulic pressure achieved under the effect of described filter element
Filter.
7. a kind of integrated form relief valve group as claimed in claim 1, it is characterised in that when the filter of described integrated form relief valve group
When core is in abnormal condition, the fluid outside described hydraulic system is along described oil-in, the first oil of described first check valve
Mouthful, the second hydraulic fluid port of described first check valve and the first hydraulic fluid port of described second check valve, the first hydraulic fluid port of described overflow valve and
First hydraulic fluid port connection of described normally closed type solenoid directional control valve, the pressure at the two ends of the most described fluid pressure reduction alarm exceedes filter element
Force value during normal work, thus trigger described fluid pressure reduction alarm work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610643116.6A CN106286476A (en) | 2016-08-08 | 2016-08-08 | A kind of integrated form relief valve group |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610643116.6A CN106286476A (en) | 2016-08-08 | 2016-08-08 | A kind of integrated form relief valve group |
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| CN106286476A true CN106286476A (en) | 2017-01-04 |
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| CN201610643116.6A Pending CN106286476A (en) | 2016-08-08 | 2016-08-08 | A kind of integrated form relief valve group |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246420A (en) * | 2017-07-20 | 2017-10-13 | 南京讯联智能科技有限公司 | It is a kind of to carry the integrated valve group of guide for blocking sender |
| CN108397445A (en) * | 2018-04-26 | 2018-08-14 | 蚌埠液力机械有限公司 | A kind of oil inlet oil return mechanism for hydraulic cylinder delivery test |
| CN110905888A (en) * | 2019-12-24 | 2020-03-24 | 苏州嘉诺环境工程有限公司 | Hydraulic system and double-shaft crusher |
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| CN108397445A (en) * | 2018-04-26 | 2018-08-14 | 蚌埠液力机械有限公司 | A kind of oil inlet oil return mechanism for hydraulic cylinder delivery test |
| CN110905888A (en) * | 2019-12-24 | 2020-03-24 | 苏州嘉诺环境工程有限公司 | Hydraulic system and double-shaft crusher |
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