CN108547812B - Pilot-operated type flow valve - Google Patents
Pilot-operated type flow valve Download PDFInfo
- Publication number
- CN108547812B CN108547812B CN201810375725.7A CN201810375725A CN108547812B CN 108547812 B CN108547812 B CN 108547812B CN 201810375725 A CN201810375725 A CN 201810375725A CN 108547812 B CN108547812 B CN 108547812B
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- Prior art keywords
- valve plug
- valve
- compressing chamber
- movable valve
- plug
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- 239000003921 oil Substances 0.000 claims description 50
- 239000010720 hydraulic oil Substances 0.000 claims description 40
- 230000000903 blocking effect Effects 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 3
- 238000013016 damping Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Classifications
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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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/363—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
- F16K31/406—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a kind of pilot-operated type flow valves, comprising: valve body；Fixed valve plug；Movable valve plug；Actuator.The two sides of movable valve plug are respectively formed with the first compressing chamber and the second compressing chamber；The first passage for being respectively communicated with the first compressing chamber and the second compressing chamber is offered on movable valve plug；Oil inlet is connected to the first compressing chamber；The second valve opening of connection the first compressing chamber and oil outlet is also provided on movable valve plug；When movable valve plug is in the position for closing the first valve opening, mobile bar to block core the second valve opening of closure, and when needing to open the first valve opening, mobile bar to block core far from the second valve opening.The present invention is by the second valve opening of setting, and the thrust for reducing movable valve plug two sides is poor, so that the movable valve plug being in close state is opened more easily by actuator, this certainly will reduce the requirement for the maximum actuation force that can apply to actuator.
Description
Technical field
The present invention relates to technical field of hydraulic pressure, in particular to a kind of pilot-operated type flow valve.
Background technique
Hydraulic system generally includes fuel tank, dynamical element (such as hydraulic pump), control element (such as overflow valve, reversal valve, stream
Measure valve etc.), executive component (such as oil cylinder, motor) and the fluid pressure line for connecting these elements.Wherein, control element is for controlling
Pressure, flow direction and flow of hydraulic oil processed etc., to meet the requirement of executive component.
Flow valve is chiefly used in controlling the movement speed of executive component, and flow valve tool is there are three state, that is, closed state, most
Big opening state and intermediate opening state.The closed state of flow valve is for blocking hydraulic oil by flow valve, to limit liquid
Pressure oil enters executive component；Flow valve is in intermediate opening state, for adjusting the flow of hydraulic oil to adjust executive component
Speed；The maximum flow that flow valve allows hydraulic oil to pass through flow valve in maximum opening state.
Above-mentioned three kinds of states of flow valve by spool mobile realization, specifically, when spool is moved to an extreme position,
Spool closes the entrance of flow valve；When spool is moved to another extreme position, spool beats the entrance of flow valve completely
It opens；When spool is when two extreme positions are mobile, spool is by the mobile aperture for adjusting entrance, to control the stream of hydraulic oil
Amount.
Occurs a kind of flow valve with above-mentioned three kinds of states in the prior art, which specifically includes valve body, valve
Core and actuator；Valve body has entrance and exit；Spool can be slided in valve body to block entrance or open entrance；
At forced area on the direction that it closes entrance of: spool, (so-called forced area refers to the structure matching of valve body and spool
By hydraulic oil oppress area) be greater than spool its open Way on forced area (offered on spool axially through
Through-hole so that hydraulic oil oppresses two forced areas respectively), this make spool be not affected by actuator driving when, spool
It is always at the extreme position for closing entrance, and generates that certain pressure is poor, which makes spool because of forced area difference
The extreme position is maintained at certain pretightning force.
Defect possessed by above-mentioned flow valve are as follows: when need to make flow valve from closed state switch to intermediate opening state or
When person's maximum opening state, actuator needs powerful power to overcome pretightning force, and needs to make spool mobile with the powerful power
A distance, this certainly will propose high requirement to the actuation capability of actuator, so that actuator must actuating with higher
Power overcomes the requirement of pretightning force to meet.
Summary of the invention
For the above-mentioned technical problems in the prior art, the embodiment provides a kind of pilot-operated type flows
Valve.
In order to solve the above technical problems, the embodiment of the present invention the technical solution adopted is that:
A kind of pilot-operated type flow valve, comprising:
Valve body, with pilot hole, oil inlet, oil outlet；The oil outlet is formed in the first end of the pilot hole；Institute
It states oil inlet and radially penetrates through the pilot hole and close to its first end；
Fixed valve plug is fixed on the first end of the valve body and stretches in the pilot hole；It is opened up on the fixed valve plug
There is the first valve opening, first valve opening is connected to the oil outlet；
Movable valve plug is sheathed on the fixed valve plug and closes first valve opening by mobile or make described first
Valve opening is opened and is connected to the oil inlet and the oil outlet；
Actuator includes at least a mobile bar and the closure core mobile with the mobile bar；Wherein:
The two sides of the movable valve plug are respectively formed with the first compressing chamber and the second compressing chamber；It is offered on the movable valve plug point
It is not connected to the first passage of the first compressing chamber and the second compressing chamber；The oil inlet and the first compressing chamber connect
It is logical, and be greater than the hydraulic oil for entering the second compressing chamber by oil inlet to the active area of the movable valve plug and pass through oil inlet
Mouth enters active area of the hydraulic oil to the movable valve plug of the first compressing chamber；
The second valve opening for being connected to the first compressing chamber and the oil outlet is also provided on the movable valve plug；When described dynamic
When spool is in the position for closing first valve opening, the mobile bar makes the closure core block second valve opening, and
When needing to open first valve opening, the mobile bar makes the closure core far from second valve opening.
Preferably, one end of the first end of the movable valve plug and the fixed valve plug far from the valve body forms closed end, institute
The closed end for stating movable valve plug and the fixed valve plug surrounds third compressing chamber；Second valve opening is provided with the closing of the movable valve plug
So that the second compressing chamber and third compressing chamber perforation on end；Wherein:
The closed end of the fixed valve plug offers second channel to be connected to the third compressing chamber and the oil outlet.
Preferably,
The side of the closed end of the movable valve plug towards the mobile bar offers deep gouge；The end of the mobile bar is arranged
There is piston, the piston is set in the deep gouge and is covered by end cap to limit the piston from the deep gouge and deviate from；
The first spring and second spring are respectively arranged in the deep gouge of the piston two sides；
Closure disk is arranged in the mobile bar, the closure disk is arranged in towards the one of the movable valve plug in the closure core
Side, second valve opening are provided with the position opposite with the closure core；
The closed end of the movable valve plug is provided with guide rod towards the side for blocking disk, and the guide rod wears described
Disk is blocked to limit the closure disk rotation；
The piston offer axially through flowing hole.
Preferably, second valve opening includes multiple, and multiple second valve openings are circumferentially；It is arranged on the closure disk
Have and blocks core correspondingly with second valve opening.
Preferably, the actuator further include the framework being set on the valve body, the electromagnetism that is installed in the framework
Iron and third spring for pushing against the mobile bar；Wherein:
The mobile bar has one section of magnetic sections at least to form an electromagnetic force with the electromagnet of energization.
Preferably, one section of damping hole is at least formed in the first passage.
Preferably, one section of damping hole is at least formed in the second channel.
Preferably, the second end of the valve body is provided with end cap, and the middle part of the end cap is worn threadably
There is adjusting nut；The third spring is located in the pilot hole and both ends are supported with the mobile bar and the adjusting nut respectively
It leans on.
Preferably, the fixed valve plug is shaped in the inside of the valve body.
Compared with prior art, the beneficial effect of pilot-operated type flow valve disclosed by the invention is: the present invention passes through setting the
Two valve openings, the thrust for reducing movable valve plug two sides is poor, so that the movable valve plug being in close state is opened more easily by actuator,
This certainly will reduce the requirement for the maximum actuation force that can apply to actuator.
Detailed description of the invention
Fig. 1 be the embodiment of the present invention provided by pilot-operated type flow valve main view (the second valve opening is in close state,
And first valve opening be also at closed state).
Fig. 2 is the enlarged view of the local A of Fig. 1.
Fig. 3 be the embodiment of the present invention provided by pilot-operated type flow valve main view (the second valve opening is in the open state,
And first valve opening be also at closed state).
Fig. 4 is the enlarged view of the local B of Fig. 3.
Fig. 5 be the embodiment of the present invention provided by pilot-operated type flow valve main view (the second valve opening is in the open state,
And first valve opening be also at opening state).
Fig. 6 is the enlarged view of the Local C of Fig. 5.
In figure:
10- valve body；11- oil inlet；12- oil outlet；13- pilot hole；20- fixed valve plug；The closed end 21-；22- second is logical
Road；The first valve opening of 23-；24- cavity；30- movable valve plug；The closed end 31-；311- deep gouge；32- first passage；The second valve opening of 33-；
40- blocks disk；41- blocks core；42- guide rod；50- actuator；51- mobile bar；52- framework；53- electromagnet；54- third bullet
Spring；55- end cap；56- adjusting nut；57- piston；The first spring of 571-；572- second spring；573- flowing hole；58- end cap；
60- first oppresses chamber；70- second oppresses chamber；80- third oppresses chamber.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing and specific embodiment party
Formula elaborates to the present invention.
As shown in Figures 1 to 6, the embodiment of the present invention discloses a kind of pilot-operated type flow valve, which is used for
The flow of hydraulic oil is controlled, and then achievees the purpose that control executive component.The pilot-operated type flow valve includes valve body 10, fixed valve plug
20, movable valve plug 30 and actuator 50.Wherein, valve body 10 has pilot hole 13, oil inlet 11, oil outlet 12；Pilot hole 13 passes through
Valve body 10 is worn, oil outlet 12 is formed in the first end of pilot hole 13, that is, the first end of valve body 10；The radial perforation of oil inlet 11 is led
To hole 13 and close to its first end；Fixed valve plug 20 is fixed on the first end of valve body 10 and stretches in pilot hole 13；Fixed valve plug 20
On offer the first valve opening 23, the first valve opening 23 is connected to oil outlet 12；Movable valve plug 30 is sheathed on fixed valve plug 20 and passes through shifting
It is dynamic to be connected to oil inlet 11 and oil outlet 12 close the first valve opening 23 or open the first valve opening 23；Actuator 50, until
It less include a mobile bar 51 and the closure core 41 mobile with mobile bar 51；Wherein: the two sides of movable valve plug 30 are respectively formed with
First compressing chamber 60 and the second compressing chamber 70；It is offered on movable valve plug 30 and is respectively communicated with the first compressing chamber 60 and the second compressing chamber 70
First passage 32；Oil inlet 11 is connected to the first compressing chamber 60, and makes the liquid for entering the second compressing chamber 70 by oil inlet 11
Pressure oil is greater than the active area of movable valve plug 30 and enters the hydraulic oil of the first compressing chamber 60 to movable valve plug 30 by oil inlet 11
Active area；The second valve opening 33 of connection the first compressing chamber 60 and oil outlet 12 is also provided on movable valve plug 30；When movable valve plug 30
When in the position for closing the first valve opening 23, mobile bar 51 to block core 41 and blocks the second valve opening 33, and when needing to open the
When one valve opening 23, mobile bar 51 to block core 41 far from the second valve opening 33.Preferably, fixed valve plug 20 is shaped in valve body 10
Inside.
The course of work of pilot-operated type flow valve disclosed in the above embodiment of the present invention is described below, and comes whereby
Illustrate pilot-operated type flow valve of the invention compared to advantage possessed by the mentioned flow valve in background technique.
When needing to close flow valve, that is, need by oil outlet 12 (with executing agency, such as oil cylinder connect) with oil inlet 11 (with
Power mechanism, such as pump connection) partition when, as depicted in figs. 1 and 2, first by machine power or electromagnetic force mobile bar 51, make
Core 41 must be blocked to block the second valve opening 33, at this point, since the second compressing chamber 70 and the first compressing chamber 60 pass through first passage 32
It is connected to, the pressure of the hydraulic oil in the second compressing chamber 70 and the hydraulic oil in the first compressing chamber 60 is of substantially equal, however, the second pressure
The hydraulic oil compeled in chamber 70 is greater than the hydraulic oil in the first compressing chamber 60 to the work of movable valve plug 30 to the active area of movable valve plug 30
With area, so that the hydraulic oil in the second compressing chamber 70 is greater than the hydraulic oil pair in the first compressing chamber 60 to the thrust of movable valve plug 30
The thrust of movable valve plug 30, so that it is poor to form thrust, in this way, movable valve plug 30 can be moved towards 23 direction of the first valve opening is closed and finally be closed
The first valve opening 23 is closed, and is leant with the catching step of valve body 10.Movable valve plug 30 will be into eventually by the first valve opening 23 is closed
Hydraulic fluid port 11 and oil outlet 12 separate, and flow out at this point, not having hydraulic oil from oil outlet 12.
When needing to open flow valve, that is, (certainly, opening when needing to be connected to oil outlet 12 with oil inlet 11
Both flow valve can have been instigated to realize maximum opening state, flow valve can also be made to realize intermediate opening state with hydraulic for adjusting
The flow of oil), using mechanical force or electromagnetic force mobile bar 51 is driven and blocks core 41 towards the direction far from the second valve opening 33
A small distance is moved first, to make the second valve opening 33 open, in this way, the hydraulic oil in the second compressing chamber 70 can be by the
The outflow of two valve openings 33, and be finally discharged through oil outlet 12, it is flowed out when the hydraulic oil in the second compressing chamber 70 from the second valve opening 33
Meanwhile the second pressure of hydraulic oil in compressing chamber 70 becomes smaller, this makes the hydraulic oil in the second compressing chamber 70 to movable valve plug 30
Thrust becomes smaller, to keep the thrust difference in the both direction of movable valve plug 30 smaller, so that having machine power or electromagnetic force
Actuator 50 compared with the prior art in flow valve be easier to make movable valve plug 30 mobile towards the direction for opening the first valve opening 23.
According to it is above-mentioned can be with, for the present invention by the second valve opening 33 of setting, the thrust for reducing 30 two sides of movable valve plug is poor so that
The movable valve plug 30 being in close state is opened more easily by actuator 50, this, which certainly will be reduced, can apply actuator 50
Maximum actuation force requirement.
It should be noted that: the passage section of first passage 32 is less than the passage section of the second valve opening 33 to guarantee the second pressure
Hydraulic oil in urgent chamber 70 mainly passes through first passage 32 and flows out.
In a preferred embodiment of the invention, as shown in Figures 1 to 6, movable valve plug 30 and fixed valve plug 20 are far from valve body
The closed end of one end formation closed end 31,21 of 10 first end, movable valve plug 30 and fixed valve plug 20 surrounds third compressing chamber 80；The
Two valve openings are provided on the closed end 31 of movable valve plug 30 so that the second compressing chamber 70 and third compressing chamber 80 penetrate through；Wherein: determining valve
The closed end 21 of core 20 offers second channel 22 to be connected to third compressing chamber 80 and oil outlet 12.
The flow valve for being formed with third compressing chamber 80 is described below compared to the stream that third compressing chamber 80 is not formed
Measure the advantage of valve.
When needing to open flow valve, as shown in Figure 3 and Figure 4, make 51 band of mobile bar using mechanical force or electromagnetic force
A small distance is moved in the dynamic direction for blocking core 41 towards separate second valve opening 33 first, to make the second valve opening 33 open, in this way
Hydraulic oil in second compressing chamber 70 can flow into third by the second valve opening 33 and oppress chamber 80, in this way, in third compressing chamber 80
The pressure of hydraulic oil increase so that the hydraulic oil in third compressing chamber 80 to the thrust of movable valve plug 30 in the first compressing chamber 60
Hydraulic oil the hydraulic oil in the second compressing chamber 70 is greater than to the thrust of movable valve plug 30 to the sum of thrust of movable valve plug 30, in this way,
Under the promotion of hydraulic oil, as shown in Figure 5 and Figure 6, movable valve plug 30 can be automatically mobile towards the direction for opening the first valve port, this meeting
So that actuator 50 becomes minimum even without force to the power of application needed for movable valve plug 30 in 23 opening direction of the first valve opening,
Movable valve plug 30 is just with following mobile bar 51 mobile.
It should be noted that: the passage section of second channel 22 should be less than the passage section of the second valve opening 33 to guarantee the
Two valve openings 33 can make the hydraulic oil in third compressing chamber 80 and the first compressing chamber 60 to the thrust of movable valve plug 30 when fully opening
Greater than the hydraulic oil in the second compressing chamber 70 to the thrust of movable valve plug 30.
As described above, can be realized by the maximum passage section for rationally designing the second valve opening 33 without using actuator
The purpose that 50 forces can make movable valve plug 30 mobile towards opening direction.
As described above, e.g. can be by making the second valve by the maximum passage section for rationally designing the second valve opening 33
The maximum passage section in hole 33 is big as far as possible and actuator 50 is made movable valve plug 30 can be made to open the first valve opening 23 without force, right
Ying Di, the embodiment provides a kind of movable valve plugs 30, and there is no the flow valves of connection relationship with mobile bar 51, specifically,
One end of mobile bar 51 towards the closed end of movable valve plug 30 31 be arranged above-mentioned closure core 41, mobile bar 51 and movable valve plug 30 without
Any connection is arranged in this way, making the maximum passage section of the second valve opening 33 big as far as possible in flow valve opening procedure
In, movable valve plug 30 follows the degree of the movement of mobile bar 51.In this way, driver only need that mobile bar 51 is driven directly to be moved to it is specified
Axial position, without forcing in movable valve plug 30.
Flow valve provided by above-described embodiment can be made by keeping the maximum passage section of the second valve opening 33 big as far as possible
Actuator 50 is obtained without driving movable valve plug 30 that can realize that movable valve plug 30 is automatically moved into designated position.However, making mobile bar 51
Not forming connection relationship with movable valve plug 30, there are many problems, for example, when actuator 50 drives the speed of mobile bar 51 slow
In the movement speed of movable valve plug 30, movable valve plug 30 is impacted because inertia may be generated with mobile bar 51, or because of the speed of movable valve plug 30
Degree is greater than the speed of mobile bar 51, and the distance both made constantly shortens, when foreshorten to influence the second valve opening 33 cannot be into
Row is when fully opening degree (movable valve plug 30 and the distance between block core 41 and foreshorten to a certain degree, the aperture of the second spool compared with
Small, the passage section for limiting the flow of hydraulic oil can reduce), the second hydraulic oil oppressed in chamber 70 may to the thrust of dynamic core
Greater than the hydraulic oil in the first compressing chamber 60 and third compressing chamber 80 to the sum of the thrust of movable valve plug 30, so that movable valve plug 30
Speed be reduced rapidly again, the opening speed so as to cause movable valve plug 30 fluctuates；For another example when the driving movement of actuator 50
51 speed of bar is greater than movable valve plug 30, and take the lead in being moved to designated position and it is static after, movable valve plug 30 can be because of inertia and static shifting
Lever 51 generates impact.
To solve the above problems, in a preferred embodiment of the invention, as shown in Fig. 2,4,6, and combining Fig. 1,3,5
Shown, the side of closed end 31 towards the mobile bar 51 of movable valve plug 30 offers deep gouge 311；The end of mobile bar 51 is provided with work
Plug 57, piston 57 are set in deep gouge 311 and are deviate from by the capping of end cap 58 with limiting piston 57 from deep gouge 311；Piston 57
The first spring 571 and second spring 572 are respectively arranged in the deep gouge 311 of two sides；It is arranged in mobile bar 51 and blocks disk 40, envelope
Stifled core 41, which is arranged in, blocks disk 40 towards the side of movable valve plug 30, and the second valve opening 33 is provided with the position opposite with core 41 is blocked；
The closed end 31 of movable valve plug 30 is provided with guide rod 42 towards the side for blocking disk 40, and guide rod 42, which is worn, blocks disk 40 to limit
Disk 40 is blocked to rotate；Piston 57 offer axially through flowing hole 573.
The above structure for enabling movable valve plug 30 to connect with mobile bar 51 is described below because the two is not connected to be deposited
The technical issues of the reason of.
It is flexibly connected as described above, mobile bar 51 is realized with movable valve plug 30, in this way, when 30 speed of movable valve plug is less than
When the speed of mobile bar 51, mobile bar 51 generates dragging to movable valve plug 30, that is, movable valve plug 30 is forced in, when the speed of movable valve plug 30
When degree is greater than mobile bar 51, mobile bar 51 generates the limitation of the movement speed to movable valve plug 30 at once, so that mobile bar 51
With movable valve plug 30 with minimum fluctuation synchronizing moving, so as to avoid impact is generated between mobile bar 51 and movable valve plug 30.
The advantage of above-described embodiment is:
1, when the speed of movable valve plug 30 starts the speed greater than mobile bar 51, mobile bar 51 is right by the first spring 571
Movable valve plug 30, which generates, to be pushed against so that the speed of movable valve plug 30 decline, meanwhile, after the first spring 571 is pressurized, block disk 40 and dynamic valve
The Distance Shortened of core 30, in this way, blocking core 41 close to the second valve opening 33, so that subtracting by the flow of the hydraulic oil of the second valve opening 33
It is small, and then reduce hydraulic oil to movable valve plug 30 towards the thrust in opening direction, so that the first spring 571 of cooperation makes movable valve plug 30
Speed declines as early as possible.
2, when the speed of movable valve plug 30 starts the speed less than mobile bar 51, mobile bar 51 is right by second spring 572
Movable valve plug 30 generate it is mobile push against so that the speed of movable valve plug 30 promotes, meanwhile, after second spring 572 is pressurized, block disk 40 and
The distance of movable valve plug 30 increases, in this way, core 41 is blocked far from the second valve opening 33, so that the stream of the hydraulic oil by the second valve opening 33
Amount increases, and then increases hydraulic oil to movable valve plug 30 towards the thrust in opening direction, so that the first spring 571 of cooperation makes movable valve plug
30 speed fast lifting.
3, the first spring 571 and second spring 572 are used not only for the impact between buffering movable valve plug 30 and mobile bar 51,
More importantly: the first spring 571 and second spring 572 are by deforming so that blocking the distance between core 41 and the second valve opening 33
Variation meet to mobile bar 51 and the consistent requirement of 30 movement speed of movable valve plug.
4, it is more easier the design of the maximum passage section of the second valve opening 33, the passage section design of the second valve opening 33
It is larger, smaller can be can be made up by the force of mobile bar 51.
Preferably, the second valve opening 33 includes multiple, and multiple second valve openings 33 are circumferentially；It blocks and is provided on disk 40 and the
Two valve openings 33 block core 41 correspondingly.
Preferably, the inside of fixed valve plug 20 offers cavity 24, the cavity 24 respectively with oil inlet 11 and second channel 22
Connection.
In a preferred embodiment of the invention, actuator 50 further includes the framework 52 being set on valve body 10, installing
In the electromagnet 53 in framework 52 and the third spring 54 for pushing against mobile bar 51；Wherein: mobile bar 51 at least has one
Section magnetic sections are to form an electromagnetic force with the electromagnet of energization.In the present embodiment, mobile bar 51 is by electromagnetism power drive, by changing
The electric current that accommodation enters electromagnet 53 can change the size of electromagnetic force, to adjust the movement velocity and power size of mobile bar 51.
Preferably, the second end of valve body 10 is provided with end cap 55, and the middle part of end cap 55 is equipped with adjusting nut threadably
56；Third spring 54 be located in pilot hole 13 and both ends respectively with mobile bar 51 and adjusting nut 56 against.Pass through adjusting nut
The compression degree of 56 adjustable third springs 54, and then change the size that thrust is formed by resultant force with electromagnetic force.
Preferably, one section of damping hole is at least formed in first passage 32.One section of damping hole is at least formed in second channel 22.
Setting damping hole purpose is in the present embodiment: so that the passage section of first passage 32 and second channel 22 is less than the second valve
The passage section in hole 33
Above embodiments are only exemplary embodiment of the present invention, are not used in the limitation present invention, protection scope of the present invention
It is defined by the claims.Those skilled in the art can within the spirit and scope of the present invention make respectively the present invention
Kind modification or equivalent replacement, this modification or equivalent replacement also should be regarded as being within the scope of the present invention.
Claims (9)
1. a kind of pilot-operated type flow valve, which is characterized in that
Valve body, with pilot hole, oil inlet, oil outlet；The oil outlet is formed in the first end of the pilot hole；It is described into
Hydraulic fluid port radially penetrates through the pilot hole and close to its first end；
Fixed valve plug is fixed on the first end of the valve body and stretches in the pilot hole；Is offered on the fixed valve plug
One valve opening, first valve opening are connected to the oil outlet；
Movable valve plug is sheathed on the fixed valve plug and by mobile to close first valve opening or make first valve opening
It opens and is connected to the oil inlet and the oil outlet；
Actuator includes at least a mobile bar and the closure core mobile with the mobile bar；Wherein:
The two sides of the movable valve plug are respectively formed with the first compressing chamber and the second compressing chamber；It offers on the movable valve plug and connects respectively
Lead to the first passage of the first compressing chamber and the second compressing chamber；The oil inlet is connected to the first compressing chamber, and
Make the hydraulic oil for entering the second compressing chamber by oil inlet to the active area of the movable valve plug be greater than by oil inlet into
Enter active area of the hydraulic oil to the movable valve plug of the first compressing chamber；
The second valve opening for being connected to the first compressing chamber and the oil outlet is also provided on the movable valve plug；When the movable valve plug
When in the position for closing first valve opening, the mobile bar makes the closure core block second valve opening, and working as need to
When opening first valve opening, the mobile bar makes the closure core far from second valve opening.
2. pilot-operated type flow valve according to claim 1, which is characterized in that the movable valve plug and the fixed valve plug are far from institute
The one end for stating the first end of valve body forms closed end, and the closed end of the movable valve plug and the fixed valve plug surrounds third compressing chamber；
Second valve opening is provided on the closed end of the movable valve plug so that the second compressing chamber and third compressing chamber perforation；
Wherein:
The closed end of the fixed valve plug offers second channel to be connected to the third compressing chamber and the oil outlet.
3. pilot-operated type flow valve according to claim 2, which is characterized in that
The side of the closed end of the movable valve plug towards the mobile bar offers deep gouge；The end of the mobile bar is provided with work
Plug, the piston are set in the deep gouge and are covered by end cap to limit the piston from the deep gouge and deviate from；
The first spring and second spring are respectively arranged in the deep gouge of the piston two sides；
It is arranged with closure disk in the mobile bar, the closure disk is arranged in towards the side of the movable valve plug in the closure core,
Second valve opening is provided with the position opposite with the closure core；
The closed end of the movable valve plug is provided with guide rod towards the side for blocking disk, and the guide rod wears the closure
Disk is to limit the closure disk rotation；
The piston offer axially through flowing hole.
4. pilot-operated type flow valve according to claim 3, which is characterized in that second valve opening includes multiple, Duo Gesuo
State the second valve opening circumferentially；It is provided on the closure disk and blocks core correspondingly with second valve opening.
5. pilot-operated type flow valve according to claim 1, which is characterized in that the actuator further includes being set in the valve
Framework on body, the electromagnet being installed in the framework and the third spring for pushing against the mobile bar；Wherein:
The mobile bar has one section of magnetic sections at least to form an electromagnetic force with the electromagnet of energization.
6. pilot-operated type flow valve according to claim 1, which is characterized in that at least form one section of resistance in the first passage
Buddhist nun hole.
7. pilot-operated type flow valve according to claim 2, which is characterized in that at least form one section of resistance in the second channel
Buddhist nun hole.
8. pilot-operated type flow valve according to claim 5, which is characterized in that the second end of the valve body is provided with end cap,
The middle part of the end cap is equipped with adjusting nut threadably；The third spring is located in the pilot hole and two
End respectively with the mobile bar and the adjusting nut against.
9. pilot-operated type flow valve according to claim 1, which is characterized in that the fixed valve plug is shaped in the valve body
Inside.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810375725.7A CN108547812B (en) | 2018-04-25 | 2018-04-25 | Pilot-operated type flow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810375725.7A CN108547812B (en) | 2018-04-25 | 2018-04-25 | Pilot-operated type flow valve |
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| Publication Number | Publication Date |
|---|---|
| CN108547812A CN108547812A (en) | 2018-09-18 |
| CN108547812B true CN108547812B (en) | 2019-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810375725.7A Active CN108547812B (en) | 2018-04-25 | 2018-04-25 | Pilot-operated type flow valve |
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| Country | Link |
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| CN (1) | CN108547812B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110559515A (en) * | 2019-09-09 | 2019-12-13 | 青岛大学附属医院 | drug delivery device for anesthetic |
| CN111637230B (en) * | 2020-05-22 | 2021-03-30 | 杭州易超新能源汽车科技有限公司 | Novel combination valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0521485A2 (en) * | 1991-07-02 | 1993-01-07 | Bang Yan Wen | Automatic control valve with isolation device between pilot and main valve |
| CN205806568U (en) * | 2016-07-09 | 2016-12-14 | 常熟骏驰科技有限公司 | A kind of oil channel structures for oil pressure adjusting valve |
| CN107631065A (en) * | 2016-07-18 | 2018-01-26 | 鞍钢股份有限公司 | Constant flow valve and working method thereof |
| CN107725879A (en) * | 2017-10-19 | 2018-02-23 | 宁波文泽机电技术开发有限公司 | A kind of normally closed ratio one-way flow valves |
| CN107883028A (en) * | 2017-11-10 | 2018-04-06 | 宁波文泽机电技术开发有限公司 | The ratio one-way flow valves of double-direction control |
-
2018
- 2018-04-25 CN CN201810375725.7A patent/CN108547812B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0521485A2 (en) * | 1991-07-02 | 1993-01-07 | Bang Yan Wen | Automatic control valve with isolation device between pilot and main valve |
| CN205806568U (en) * | 2016-07-09 | 2016-12-14 | 常熟骏驰科技有限公司 | A kind of oil channel structures for oil pressure adjusting valve |
| CN107631065A (en) * | 2016-07-18 | 2018-01-26 | 鞍钢股份有限公司 | Constant flow valve and working method thereof |
| CN107725879A (en) * | 2017-10-19 | 2018-02-23 | 宁波文泽机电技术开发有限公司 | A kind of normally closed ratio one-way flow valves |
| CN107883028A (en) * | 2017-11-10 | 2018-04-06 | 宁波文泽机电技术开发有限公司 | The ratio one-way flow valves of double-direction control |
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| Publication number | Publication date |
|---|---|
| CN108547812A (en) | 2018-09-18 |
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Effective date of registration: 20210203 Address after: No.2665, Linpu North Road, Oubei street, Yongjia County, Wenzhou City, Zhejiang Province 325105 Patentee after: OULAM VALVE TECHNOLOGY Co.,Ltd. Address before: Room 3, building 2, Zhongshan new street, Yangyi street, Lucheng District, Wenzhou City, Zhejiang Province 325000 Patentee before: Lin Chijie |
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