CN108869431A - A kind of hydraulic control balanced valve more adjustable than ratio - Google Patents
A kind of hydraulic control balanced valve more adjustable than ratio Download PDFInfo
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- CN108869431A CN108869431A CN201811105308.7A CN201811105308A CN108869431A CN 108869431 A CN108869431 A CN 108869431A CN 201811105308 A CN201811105308 A CN 201811105308A CN 108869431 A CN108869431 A CN 108869431A
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- valve core
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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
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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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The present invention proposes a kind of hydraulic control balanced valve more adjustable than ratio, including：Valve pocket, end plug, balance valve core, end plug, the first spring, retaining ring, spring base, nonreturn valve core, second spring, proportional throttle valve component.Hydraulic control according to an embodiment of the present invention balanced valve more adjustable than ratio, the processing is simple, can with proportion adjustment hydraulic control than, be not only able to achieve unloaded or low-load when energy-saving effect but also the stability contorting requirement of full load may be implemented.
Description
Technical field
The present invention relates to a kind of valve modules of hydraulic device, relate in particular to a kind of hydraulic control balance more adjustable than ratio
Valve.
Background technique
In the mechanical equipments such as modern engineering machinery, building machinery, raising hydraulic circuit is widely applied, wherein balanced valve
It is the key that hydraulic cylinder work Hydraulic Elements, the superiority and inferiority for balancing valve performance directly affect the property of host in control hoisting circuit
Energy.Since balanced valve mainly increases back pressure, and set pressure is usually bigger than maximum load by 30%~50%, thus balanced valve
It is to belong to dissipative cell in systems, leads to overpowering consumption to obtain stabilization.Current existing balanced valve is all the fixation used
Hydraulic control ratio, when host practical application selects the balanced valve of corresponding hydraulic control ratio according to operating condition.Such as：Existing balanced valve hydraulic control ratio has
3:1,8:1,10:1 etc., if actual condition load changes greatly relatively high to stability requirement, it is typically chosen lower hydraulic control ratio
Balanced valve, such as 3:1；If actual condition load variation is smaller relatively low to stability requirement, and requires energy-efficient operating condition, one
As select the balanced valve of higher hydraulic control ratio, such as 8:1 or 10:1.This is because making balanced valve for the balanced valve of fixed hydraulic control ratio
Core generates the displacement communicated, and the balanced valve control mouth of low hydraulic control ratio needs balanced valve of the increased pressure greater than high hydraulic control ratio, this
For sample in the identical situation of control mouth pressure fluctuations amplitude, the balance valve core displacement of the balanced valve of low hydraulic control ratio is small namely fluctuates
It is small, so the operating condition high for stability requirement is typically chosen the balanced valve of low hydraulic control ratio.But for the balance of low hydraulic control ratio
Valve, there is also some disadvantages, and such as when load becomes smaller or zero load, hydraulic control mouth similarly needs very big pressure that can just make to balance
Valve standard-sized sheet, this will cause unnecessary idle work to export, and cause energy dissipation.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, an object of the present invention is to provide one kind, the processing is simple, hydraulic control balanced valve more adjustable than ratio.
Hydraulic control according to an embodiment of the present invention balanced valve more adjustable than ratio, including：
Valve pocket, the valve pocket have valve pocket through-hole up and down, and the valve pocket through-hole includes the first valve pocket from top to bottom
Through hole section, the second valve pocket through hole section, third valve pocket through hole section and the 4th valve pocket through hole section, the hole of the first valve pocket through hole section
Diameter is greater than the aperture of the 4th valve pocket through hole section, and the aperture of the 4th valve pocket through hole section is greater than the second valve pocket through hole section
Aperture, the aperture of the second valve pocket through hole section is greater than the aperture of the third valve pocket through hole section, has on the valve pocket outer
Be open first runner, throttle orifice and the through flow hole being respectively positioned on the periphery wall of the valve pocket, the inner opening position of the first runner
In the terrace of appearing on the stage on the internal perisporium of the second valve pocket through hole section and adjacent to the third valve pocket through hole section, the first runner
It is equipped with damping hole, the inner opening of the throttle orifice is located on the internal perisporium of the third valve pocket through hole section, the through flow hole
Inner opening is located on the internal perisporium of the 4th valve pocket through hole section and the leave from office terrace of the neighbouring third valve pocket through hole section,
In, the outward opening of the first runner constitutes the first hydraulic fluid port, the outward opening structure of the outward opening of the throttle orifice and the through flow hole
At the second hydraulic fluid port；
Balance valve core, the balance valve core include the first balance compatible with the second valve pocket through hole section from top to bottom
Spool section and the second balance valve core section compatible with the third valve pocket through hole section, the first balance valve core section can be upper and lower
Be fitted slidably in the second valve pocket through-hole and extend upwardly into the first valve pocket through-hole, the second balance valve core section can on
Cooperate to lower slider in the third valve pocket through hole section, the balance valve core has balance valve core through-hole up and down, institute
Balance valve core through-hole is stated to include the upper through hole section in the first balance valve core section and be located at second balance valve core
Lower through-hole section in section, the aperture of the upper through hole section are less than the aperture of the third valve pocket through hole section, the lower through-hole section
Aperture is less than the aperture of the upper through hole section, is formed on the periphery wall of the second balance valve core section and the first runner
Compatible first control chamber of inner opening, be connected with the first control chamber along being axially arranged in the first balance valve core section
Second flow channel is radially equipped in the first balance valve core section to be connected to being connected to for the second flow channel and upper through hole section
Hole；
End plug, the end plug are located on the valve pocket for closing the upper opening of the valve pocket through-hole；Under the end plug
End extends downwardly into the valve pocket through-hole and is plugged in the upper through hole section so that the balance valve core is relative under the end plug
End can slide up and down, and the side wall of the end plug lower end is equipped with the through-flow slot of annular, and the through-flow slot and the intercommunicating pore are always
Holding communicates, and equipped with mounting hole and the control hole being connected with the mounting hole in the end plug, the end plug lower part is radially
Equipped with the flowing hole to be connected to the through-flow slot and the control hole；
First spring, first spring are socketed in the end plug lower end, and the upper end of first spring is against the end
Against the upper surface of the first balance valve core section, first spring is normal downwards for the lower end of plug step surface and first spring
Push the balance valve core so that the first balance valve core section lower end surface against the third valve pocket through hole section top bar
Face, at this point, the lower end of the second balance valve core section extends downwardly into the 4th valve pocket through hole section, in the first valve pocket through-hole
In section, the second control chamber, the end are defined between the periphery wall of the end plug and the upper surface of the first balance valve core section
It is equipped with the third flow channel to be connected to the mounting hole and second control chamber beyond the Great Wall, has the 4th on the side wall of the valve pocket
Runner, the outward opening of the 4th runner be located on the periphery wall of the valve pocket and the inner opening of the 4th runner connection described in
The outward opening of second control chamber, the 4th runner constitutes third hydraulic fluid port；
Spring base, the spring base fixation are located in the 4th valve pocket through hole section；
Nonreturn valve core, the nonreturn valve core include the main body that can slide up and down to Pei He in the 4th valve pocket through hole section
Section and below the main paragraph and it can slide up and down to and cooperate undergauge section in the spring base, the nonreturn valve core
The upper nonreturn valve core through-hole having up and down, the aperture of the nonreturn valve core through-hole are less than the hole of the third valve pocket through hole section
The lower end in diameter and the aperture for being greater than the upper through hole section, the nonreturn valve core through-hole constitutes the 4th hydraulic fluid port；
Second spring, the second spring are socketed in the undergauge section, and the upper end of the second spring is against the master
The lower end surface of the body section and lower end of the second spring is against the spring base, the second spring often push described unidirectional upwards
Spool is so that the through flow hole is closed against the lower end surface of the second balance valve core section in the upper surface of the nonreturn valve core；
Proportional throttle valve component, the proportional throttle valve component threaded connection are opened to normal off described in the mounting hole
The connection of control hole and the mounting hole controls the control hole by changing the voltage signal of given proportional throttle valve component
Aperture, and then change the first control chamber pressure and the first hydraulic fluid port pressure ratio relation；
The axial cross section product for enabling the nonreturn valve core through-hole is S1, the axial cross section product of the upper through hole section is S2, described
The axial cross section product of second valve pocket through hole section is S3, then meets S1 between S1, S2 and S3>S2, and (S3-S1)/(S1-S2) > 6.
Advantageously, the proportional throttle valve component includes proportion electro-magnet component, throttling valve core and third spring, the ratio
Example electromagnet assembly includes magnetic conductive tube, armature and coil, and the magnetic conductive tube is threadedly coupled in the mounting hole, and the armature is sliding
Dynamic to be located in the magnetic conduction tube cavity, the coil is socketed in the magnetic conductive tube upper end, under the throttling valve core and the armature
End is fixedly connected, and the third spring is located in the magnetic conduction tube cavity, and one end withstands on the bottom of the magnetic conduction tube cavity, separately
One end, which is against on the armature, makes the armature that the throttling valve core holding be driven to move down the trend for blocking the control hole.
Advantageously, the balanced valve further includes retaining ring, and the retaining ring is embedded the inner wall in the 4th valve pocket through hole section
On with the fixation spring base.
Advantageously, the throttle orifice is disposed with multi-turn along the axial direction of the third valve pocket through hole section, has on every circle along institute
State multiple throttle orifices of the circumferential uniform intervals arrangement of third valve pocket through hole section.
Advantageously, the end plug is connect with the threaded upper ends of the valve pocket through-hole.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of hydraulic control according to an embodiment of the invention balanced valve more adjustable than ratio；
Fig. 2 is the hydraulic schematic diagram of hydraulic control according to an embodiment of the invention balanced valve more adjustable than ratio；
Fig. 3 is a kind of the hydraulic of application scenarios of hydraulic control according to an embodiment of the invention balanced valve more adjustable than ratio
Schematic diagram.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings it is described in detail a kind of hydraulic control according to an embodiment of the present invention balanced valve more adjustable than ratio.
As shown in Figure 1 to Figure 3, balanced valve according to an embodiment of the present invention, including：Valve pocket 1, end plug 2, balance valve core 3, than
Example throttle valve component, the first spring 6, spring base 8, nonreturn valve core 9, second spring 10.
Valve pocket 1 has a valve pocket through-hole up and down, and the valve pocket through-hole includes the first valve pocket through hole section, the from top to bottom
Two valve pocket through hole sections, third valve pocket through hole section and the 4th valve pocket through hole section.The aperture of the first valve pocket through hole section is greater than institute
The aperture of the 4th valve pocket through hole section is stated, the aperture of the 4th valve pocket through hole section is greater than the aperture of the second valve pocket through hole section,
The aperture of the second valve pocket through hole section is greater than the aperture of the third valve pocket through hole section.It is respectively positioned on valve pocket 1 with outward opening
First runner 101, throttle orifice 102 and through flow hole 103 on the periphery wall of the valve pocket.The inner opening of first runner 101 is located at
On the internal perisporium of the second valve pocket through hole section and the terrace of appearing on the stage of the neighbouring third valve pocket through hole section, on first runner 101
Equipped with damping hole Z1, the inner opening of throttle orifice 102 is located on the internal perisporium of the third valve pocket through hole section, through flow hole 103 it is interior
Opening is located on the internal perisporium of the 4th valve pocket through hole section and the leave from office terrace of the neighbouring third valve pocket through hole section.Wherein,
The outward opening of first runner 101 constitutes the first hydraulic fluid port X, and the outward opening of throttle orifice 102 and the outward opening of through flow hole 103 constitute second
Hydraulic fluid port V.Advantageously, throttle orifice 102 is disposed with multi-turn along the axial direction of the third valve pocket through hole section, has on every circle along described the
Multiple throttle orifices 102 of the circumferential uniform intervals arrangement of three valve pocket through hole sections.
Balance valve core 3 include from top to bottom the first balance valve core section compatible with the second valve pocket through hole section and with
The compatible second balance valve core section of the third valve pocket through hole section.The first balance valve core section can slide up and down to cooperation and exist
It (slides up and down in the second valve pocket through-hole and refers to that relevant two components are in contact, similarly hereinafter) and extend upwardly into the first valve pocket and lead to
Hole, the second balance valve core section can slide up and down to cooperation in the third valve pocket through hole section.The balance valve core has
Balance valve core through-hole 301 up and down, balance valve core through-hole 301 include being located in the first balance valve core section and described the
Upper through hole section in two balance valve core sections and the lower through-hole section in the third balance valve core section, the upper through hole section
Aperture is less than the aperture of the third valve pocket through hole section, and the aperture of the lower through-hole section is less than the aperture of the upper through hole section.?
First control chamber 1a compatible with the inner opening of first runner 101 is formed on the periphery wall of the second balance valve core section,
Along the second flow channel 302 being connected with the first control chamber 1a is axially arranged in the first balance valve core section, described first is balanced
The intercommunicating pore 303 to be connected to the second flow channel 302 and upper through hole section is radially equipped in spool section.
End plug 2 is located at for closing the upper opening of the valve pocket through-hole on valve pocket 1, and the end, 2 lower end extends downwardly into institute
It states valve pocket through-hole and is plugged in the upper through hole section so that the balance valve core 3 can go up downslide relative to 2 lower end of end plug
Dynamic, the side wall of 2 lower end of end plug is equipped with the through-flow slot 24 of annular, and the through-flow slot 24 is protected always with the intercommunicating pore 303
It holds and communicates, equipped with mounting hole 201 and the control hole 24 being connected with the mounting hole 201, the end plug lower part in the end plug 2
Radially it is equipped with the flowing hole 23 to be connected to the through-flow slot 24 and the control hole 21.Advantageously, end plug 2 and the valve pocket
The threaded upper ends of through-hole connect.
First spring 6 is socketed in 2 lower end of end plug, the upper end of first spring 6 against 2 step surface of end plug and
The lower end of first spring 6 often pushes downwards balance against the upper surface of the first balance valve core section, first spring 6
Spool 3 so that the first balance valve core section lower end surface against the third valve pocket through hole section terrace of appearing on the stage, at this point, described
The lower end of second balance valve core section extends downwardly into the 4th valve pocket through hole section, in the first valve pocket through hole section, the end
The second control chamber 1b is defined between the periphery wall of plug 2 and the upper surface of the first balance valve core section, the end plug 2 is equipped with
To be connected to the third flow channel 22 of the mounting hole 201 and the second control chamber 1b, have the 4th on the side wall of the valve pocket 1
Runner 104, the outward opening of the 4th runner 104 is located on the periphery wall of the valve pocket 1 and the interior of the 4th runner 104 is opened
Mouth is connected to the second control chamber 1b, and the outward opening of the 4th runner 104 constitutes third hydraulic fluid port T.
The fixation of spring base 8 is located in the 4th valve pocket through hole section.Advantageously, the balanced valve further includes retaining ring 11,
Retaining ring 11 is embedded on the inner wall of the 4th valve pocket through hole section with fixed spring seat 8.
Nonreturn valve core 9 includes that can slide up and down to cooperate main paragraph in the 4th valve pocket through hole section and be located at institute
State below main paragraph and can slide up and down to the undergauge section cooperated in the spring base.Have up and down on nonreturn valve core 9
Nonreturn valve core through-hole, the aperture of nonreturn valve core through-hole is less than the aperture of the third valve pocket through hole section and is greater than the upper through-hole
The lower end in the aperture of section, nonreturn valve core through-hole constitutes the 4th hydraulic fluid port C.
Second spring 10 is socketed in the undergauge section, the upper end of second spring 10 against the main paragraph lower end surface and
The lower end of second spring 10 against spring base 8, second spring 10 often push nonreturn valve core 9 upwards so that nonreturn valve core 9 upper end
Through flow hole 103 is closed against the lower end surface of the second balance valve core section in face.
Proportional throttle valve component is threaded in the mounting hole 201 and opens the control hole 21 and the peace to normal off
The connection for filling hole 201 controls the aperture of the control hole 21 by changing the voltage signal of given proportional throttle valve component, into
And change the pressure of the first control chamber 1a and the ratio relation of the first hydraulic fluid port X pressure.The proportional throttle valve component includes ratio
Electromagnet assembly 5, throttling valve core 4 and third spring 7, the proportion electro-magnet component 5 include magnetic conductive tube 51, armature 52 and coil
53, the magnetic conductive tube 51 is threaded in the mounting hole 201, and the sliding of armature 52 is located at 51 inner cavity of magnetic conductive tube
In, the coil 53 is socketed in 51 upper end of magnetic conductive tube, and the throttling valve core 4 is fixedly connected with 52 lower end of armature, institute
It states third spring 7 to be located in 51 inner cavity of magnetic conductive tube, one end withstands on the bottom of 51 inner cavity of magnetic conductive tube, and the other end is against
Make the armature 52 that the holding of throttling valve core 4 be driven to move down the trend for blocking the control hole 21 on the armature 52.
The axial cross section product for enabling the nonreturn valve core through-hole is S1, the axial cross section product of the upper through hole section is S2, described
The axial cross section product of second valve pocket through hole section is S3, then meets S1 between S1, S2 and S3>S2, and (S3-S1)/(S1-S2) > 6.
What needs to be explained here is that in the uncharged situation of coil 53, under the active force of third spring 7, throttle valve
Core 4 blocks control hole 21, and the pressure oil of the first hydraulic fluid port X enters the first control chamber 1a, the first control chamber 1a by damping hole Z1
Equal with the pressure of the first hydraulic fluid port X, of the invention at this time hydraulic control ratio=(S3-S1)/(S1-S2) of pressure, because of (S3-S1)/
(S1-S2) 6 > can make the present invention reach high hydraulic control ratio, when unloaded or low-load controls, can reduce the first hydraulic fluid port X's
Pressure has energy-efficient effect.When the voltage being gradually increased on coil 53, suction between armature 52 and magnetic conductive tube 51 according to
Ratio increase drives throttling valve core 4 that the active force of third spring 7 is overcome to move upwards, and is gradually opened control hole 21；Throttling valve core 4
Upward displacement is directly proportional to the voltage on coil 53, that is, given voltage is bigger, 4 amount of shifting up of throttling valve core
It is bigger, it is fully opened until by control hole 21.In this way, being actually to constitute one between the first hydraulic fluid port X to third hydraulic fluid port T
A hydraulic B being made of fixed damping (damping hole Z1) and adaptive damping (aperture of proportional throttle valve component adjusting control hole 21)
Type half-bridge, this hydraulic Type B half-bridge is by changing the voltage signal size on coil 53, thus it is possible to vary fixed damping (damping hole
Z1) the pressure and first of the first control chamber 1a between adaptive damping (aperture of proportional throttle valve component adjusting control hole 21)
The ratio relation of hydraulic fluid port X pressure, to change hydraulic control ratio of the invention.Such as：Assuming that (S3-S1)/(S1-S2)=8, works as coil
53 it is not charged when, the pressure of the first control chamber 1a is equal with the pressure of the first hydraulic fluid port X, hydraulic control ratio of the invention be 8:1；When given
The certain voltage of coil 53, the area of passage for forming the opening size of control hole 21 are equivalent to the area of passage of damping hole Z1
When, the pressure of the first control chamber 1a is equal to the half of the first hydraulic fluid port X pressure, and (common sense well known to those skilled in the art, does not make here
Detailed reasoning), being equivalent to reduces half namely 4 for hydraulic control ratio of the invention:1, if continuing to increase the electricity on coil 53
Pressure, then hydraulic control of the invention ratio continues to reduce, and when 21 standard-sized sheet of control hole, hydraulic control ratio of the invention reaches minimum value.Therefore,
The present invention can be deacclimatized a variety of different operating conditions, be worked as sky by the voltage swing of change coil 53 with the change hydraulic control ratio of ratio
When load or low-load, energy-efficient effect can be reached by realizing high hydraulic control ratio to the power-off of coil 53；When fully loaded or operating condition is complicated
When, the biggish voltage of coil 53 can be given, keeps hydraulic control of the invention relatively low, the mesh of stability contorting when realizing load decline
's.
It following is a brief introduction of the course of work of balanced valve according to an embodiment of the present invention.
As shown in figure 3, in application, the second hydraulic fluid port V is connected with an actuator port A of reversal valve 12, by the first hydraulic fluid port X
It is connected with another actuator port B of reversal valve 12 with the rod chamber of hydraulic cylinder 13, by the nothing of the 4th hydraulic fluid port C and hydraulic cylinder 13
Rod cavity is connected, and third hydraulic fluid port T is connected with fuel tank 14.
(1) uphill process, the pressure oil that the pressure oil of reversal valve 12 reaches the second hydraulic fluid port V, the second hydraulic fluid port V of balanced valve are logical
Crossing through flow hole 103 pushes nonreturn valve core 9 to move downward the active force opening valve port for overcoming second spring 10, and oil is through the second hydraulic fluid port V
It flows into the 4th hydraulic fluid port C and reaches 13 rodless cavity of hydraulic cylinder, push 13 uplink of hydraulic cylinder.This stage oil liquid flows into the by the second hydraulic fluid port V
Four hydraulic fluid port C do not have throttling action.
(2) during declining, the voltage signal that coil 53 matches first is given according to actual condition, present invention work is made to exist
Under some hydraulic control ratio, reversal valve 12 commutates, and the pressure oil of the first hydraulic fluid port X enters control chamber 1a and is applied on balance valve core 3, gram
The active force of the first spring 6 is taken, balance valve core 3 moves up, and first opens conical surface seal face, while nonreturn valve core 9 is moved upwards and arrived to
The leave from office terrace of the third valve pocket through hole section separates through flow hole 103 and the 4th hydraulic fluid port C.First hydraulic fluid port X pressure increase, balance
Spool 3 just moves up further, each throttle orifice 102 covered in front of gradually exposing by third balance valve core section, such overcurrent
Area is to mitigate increased, the load available accurate control of lowering velocity.
(3) stopped process, the first hydraulic fluid port X pressure reduction, the first spring 6 push balance valve core 3 to move down, and area of passage is gradually
It reduces, valve port is shut.
(4) in stopped process, when keeping load pressure generation impact larger due to external force, the 4th hydraulic fluid port C pressure
Hydraulic oil is applied on the annular active area (S1-S2) of balance valve core 3, if surge is more than the effect of the first spring 6
Power, balance valve core 3 will quickly open throttle orifice 102, and compression shock buffering is fallen.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more, unless separately
There is clearly specific restriction.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are within the scope of the invention to above-mentioned implementation
Example be changed, modify, replacement and variant, each fall within protection scope of the present invention.
Claims (5)
1. a kind of hydraulic control balanced valve more adjustable than ratio, which is characterized in that including：
Valve pocket, the valve pocket have valve pocket through-hole up and down, and the valve pocket through-hole includes the first valve pocket through-hole from top to bottom
Section, the second valve pocket through hole section, third valve pocket through hole section and the 4th valve pocket through hole section, the aperture of the first valve pocket through hole section are big
In the aperture of the 4th valve pocket through hole section, the aperture of the 4th valve pocket through hole section is greater than the hole of the second valve pocket through hole section
Diameter, the aperture of the second valve pocket through hole section are greater than the aperture of the third valve pocket through hole section, have outward opening on the valve pocket
The inner opening of first runner, throttle orifice and the through flow hole being respectively positioned on the periphery wall of the valve pocket, the first runner is located at institute
The terrace of appearing on the stage on the internal perisporium of the second valve pocket through hole section and adjacent to the third valve pocket through hole section is stated, is set on the first runner
There is damping hole, the inner opening of the throttle orifice is located on the internal perisporium of the third valve pocket through hole section, opens in the through flow hole
Mouth is located on the internal perisporium of the 4th valve pocket through hole section and the leave from office terrace of the neighbouring third valve pocket through hole section, wherein institute
The outward opening for stating first runner constitutes the first hydraulic fluid port, the outward opening composition second of the outward opening of the throttle orifice and the through flow hole
Hydraulic fluid port；
Balance valve core, the balance valve core include the first balance valve core compatible with the second valve pocket through hole section from top to bottom
Section and the second balance valve core section compatible with the third valve pocket through hole section, the first balance valve core section can slide up and down
Ground cooperation is in the second valve pocket through-hole and extends upwardly into the first valve pocket through-hole, and the second balance valve core section can go up downslide
Cooperate in the third valve pocket through hole section dynamicly, the balance valve core has balance valve core through-hole up and down, described flat
Weighing apparatus valve core through hole includes the upper through hole section in the first balance valve core section and is located in the second balance valve core section
Lower through-hole section, the aperture of the upper through hole section is less than the aperture of the third valve pocket through hole section, the aperture of the lower through-hole section
Less than the aperture of the upper through hole section, be formed on the periphery wall of the second balance valve core section in the first runner
Be open compatible first control chamber, and edge is axially arranged with second to be connected with the first control chamber in the first balance valve core section
Runner is radially equipped with the intercommunicating pore to be connected to the second flow channel and upper through hole section in the first balance valve core section；
End plug, the end plug are located on the valve pocket for closing the upper opening of the valve pocket through-hole, the lower end of the end plug to
Under protrude into the valve pocket through-hole and be plugged in the upper through hole section so that the balance valve core can relative to the end plug lower end
It slides up and down, the side wall of the end plug lower end is equipped with the through-flow slot of annular, and the through-flow slot is remained with the intercommunicating pore
It communicates, equipped with mounting hole and the control hole being connected with the mounting hole in the end plug, the end plug lower part is radially equipped with
To be connected to the flowing hole of the through-flow slot and the control hole；
First spring, first spring are socketed in the end plug lower end, and the upper end of first spring is against the end plug platform
The lower end of terrace and first spring often pushes downwards against the upper surface of the first balance valve core section, first spring
The balance valve core so that the first balance valve core section lower end surface against the third valve pocket through hole section terrace of appearing on the stage, this
When, the lower end of the second balance valve core section extends downwardly into the 4th valve pocket through hole section, in the first valve pocket through hole section,
The second control chamber is defined between the periphery wall of the end plug and the upper surface of the first balance valve core section, is set on the end plug
There is the third flow channel to be connected to the mounting hole and second control chamber, there is the 4th runner on the side wall of the valve pocket,
The outward opening of 4th runner is located on the periphery wall of the valve pocket and the inner opening of the 4th runner connection described second
The outward opening of control chamber, the 4th runner constitutes third hydraulic fluid port；
Spring base, the spring base fixation are located in the 4th valve pocket through hole section；
Nonreturn valve core, the nonreturn valve core include the main paragraph that can slide up and down to Pei He in the 4th valve pocket through hole section with
And below the main paragraph and the undergauge section cooperated in the spring base can be slided up and down to, have on the nonreturn valve core
Have a nonreturn valve core through-hole up and down, the aperture of the nonreturn valve core through-hole be less than the aperture of the third valve pocket through hole section and
Greater than the aperture of the upper through hole section, the lower end of the nonreturn valve core through-hole constitutes the 4th hydraulic fluid port；
Second spring, the second spring are socketed in the undergauge section, and the upper end of the second spring is against the main paragraph
Lower end surface and the second spring lower end against the spring base, the second spring often pushes the nonreturn valve core upwards
So that the through flow hole is closed against the lower end surface of the second balance valve core section in the upper surface of the nonreturn valve core；
Proportional throttle valve component, the proportional throttle valve component threaded connection open the control to normal off in the mounting hole
The connection in hole and the mounting hole controls opening for the control hole by changing the voltage signal of given proportional throttle valve component
Degree, and then change the pressure of the first control chamber and the ratio relation of the first hydraulic fluid port pressure；
The axial cross section product for enabling the nonreturn valve core through-hole is S1, the axial cross section product of the upper through hole section is S2, described second
The axial cross section product of valve pocket through hole section is S3, then meets S1 between S1, S2 and S3>S2, and (S3-S1)/(S1-S2) > 6.
2. hydraulic control according to claim 1 balanced valve more adjustable than ratio, which is characterized in that the proportional throttle valve component
Including proportion electro-magnet component, throttling valve core and third spring, the proportion electro-magnet component includes magnetic conductive tube, armature and line
Circle, the magnetic conductive tube are threadedly coupled in the mounting hole, and the armature sliding is located in the magnetic conduction tube cavity, the coil
It is socketed in the magnetic conductive tube upper end, the throttling valve core is fixedly connected with the armature lower end, and the third spring is located at described
In magnetic conduction tube cavity, one end withstands on the bottom of the magnetic conduction tube cavity, and the other end, which is against on the armature, makes the armature band
It moves the throttling valve core holding and moves down the trend for blocking the control hole.
3. hydraulic control according to claim 1 balanced valve more adjustable than ratio, which is characterized in that it further include retaining ring, the gear
Circle is embedded on the inner wall of the 4th valve pocket through hole section with the fixation spring base.
4. hydraulic control according to claim 1 or 2 balanced valve more adjustable than ratio, which is characterized in that the throttle orifice is along institute
The axial direction for stating third valve pocket through hole section is disposed with multi-turn, has the circumferential uniform intervals along the third valve pocket through hole section on every circle
Multiple throttle orifices of arrangement.
5. hydraulic control according to claim 1 or 2 balanced valve more adjustable than ratio, which is characterized in that the end plug with it is described
The threaded upper ends of valve pocket through-hole connect.
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| CN201811105308.7A CN108869431B (en) | 2018-09-21 | 2018-09-21 | A kind of hydraulic control balanced valve more adjustable than ratio |
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| CN112023822A (en) * | 2020-09-10 | 2020-12-04 | 刘根 | Stock solution proportioning device used in chemical production process |
| CN112377479A (en) * | 2020-11-30 | 2021-02-19 | 三一海洋重工有限公司 | Balance valve, hydraulic equipment and engineering machinery |
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| CN112377479B (en) * | 2020-11-30 | 2022-11-15 | 三一海洋重工有限公司 | Balance valve, hydraulic equipment and engineering machinery |
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| CN108869431B (en) | 2019-11-26 |
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Effective date of registration: 20191105 Address after: 317610 Taizhou City, Zhejiang Province, the functional area of the Ganjiang hardware industry (Salt Pan Village) Applicant after: Zhejiang Double-Lin Valves Co., Ltd. Address before: 523000 Dongguan City, Guangdong Province, Songshan Lake High-tech Industrial Development Zone Headquarters, No. 2, No. 1 District, No. 2, No. 201 Applicant before: Dongguan hate Paavo Hydraulic Technology Co., Ltd. |
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