CN109026891A - A kind of modified form balanced valve - Google Patents
A kind of modified form balanced valve Download PDFInfo
- Publication number
- CN109026891A CN109026891A CN201810961823.9A CN201810961823A CN109026891A CN 109026891 A CN109026891 A CN 109026891A CN 201810961823 A CN201810961823 A CN 201810961823A CN 109026891 A CN109026891 A CN 109026891A
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- Prior art keywords
- hole
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- valve pocket
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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
- F15B13/023—Excess flow valves, e.g. for locking cylinders in case of hose burst
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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
- F15B13/029—Counterbalance valves
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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
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
- F15B13/0426—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with fluid-operated pilot valves, i.e. multiple stage valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
Abstract
The present invention proposes that a kind of modified form balanced valve includes: valve pocket, end plug, bushing, balance valve core, the first spring, spring base, check valve sheet, second spring.Modified form balanced valve according to an embodiment of the present invention, the processing is simple, and area of passage is without mutation, volume compact, long service life.
Description
Technical field
The present invention relates to a kind of valve modules of hydraulic device, relate in particular to a kind of modified form balanced 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.
The existing generally existing such a disadvantage of hydraulically balanced valve: when loading decentralization, due to hydraulically balanced valve valve port
The phenomenon that area of passage can generate the characteristics of mutation, and load can be made to generate low-frequency jitter and impact, causes system unstable, influences
The security reliability of complete machine.What load decentralization and load passed through when rising is same valve port, can all generate restriction effect, and practical
Middle load does not need throttling action when rising, and seriously affects the efficiency of operation.Also need parallel connection one single in order to solve this problem
To valve, expense is virtually increased.What is passed through when load up and down is all same valve port, that is, forms the valve of this valve port
Core and valve seat in up and down each time will either on or off it is primary, will cause spool or valve seat frequency of use mistake in this way
Height, to shorten service life.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, the processing is simple an object of the present invention is to provide a kind of, area of passage without mutation, volume compact, make
With the modified form balanced valve that the service life is long.
A kind of modified form balanced valve according to an embodiment of the present invention, comprising:
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, second flow channel, throttle orifice and the through flow hole being respectively positioned on the periphery wall of the valve pocket, the first runner
Inner opening is located at the appearing on the stage on terrace of the second valve pocket through hole section, and the inner opening of the second flow channel is located at second valve pocket
The inner opening construction of appear on the stage terrace and the second flow channel on the internal perisporium of through hole section and adjacent to the third valve pocket through hole section
At the first 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 outward opening of the first runner, the outward opening of the throttle orifice and the through flow hole constitutes the first hydraulic fluid port,
The outward opening of the second flow channel constitutes the second hydraulic fluid port；
End plug, the end plug are located on the valve pocket for closing the upper opening of the valve pocket through-hole, have on the end plug
There is the end plug blind hole that Open Side Down, the aperture of the end plug blind hole is less than the aperture of the first valve pocket through hole section；
Bushing, the bushing are located in the first valve pocket through hole section, the bushing upper end and end plug lower end surface phase
It supports, the bushing lower end and the leave from office terrace of the first valve pocket through hole section offset, and have the lining axially penetrated through in the bushing
Cover through-hole；
Balance valve core, the balance valve core include the first balance valve core section compatible with the bushing through-hole, with it is described
Second valve pocket through hole section is adapted and the second balance valve core section being located at below the first balance valve core section and the third valve pocket are logical
Hole section be adapted and be located at the second balance valve core section below third balance valve core section, the first balance valve core section can on
Cooperate to lower slider in the bushing through-hole, the second balance valve core section can slide up and down to cooperation in second valve pocket
In through hole section, the third balance valve core section can slide up and down to cooperation in the third valve pocket through hole section, the balanced valve
Core has balance valve core through-hole up and down, and the balance valve core through-hole is equipped with third damping hole；
Valve seat, the valve seat is moving up and down to be located in the 4th valve pocket through hole section, and the valve seat is equipped with axial
Perforative valve seat through-hole, the top of the valve seat through-hole are equipped with inner conical surface, are along the circumferential direction evenly equipped with multiple axis on the valve seat
To perforative valve seat through flow hole；
First spring, first spring are located in the end plug blind hole, and the upper end of first spring is against the end
Fill in the bottom surface of blind hole and the lower end of first spring against the upper surface of the first balance valve core section, first spring to
Often push the balance valve core down so that the third balance valve core section lower end surface on the inner conical surface of the valve seat with every
Disconnected third hydraulic fluid port is connected to the 4th valve pocket through hole section；
Spring base, the upper end of the spring base are located in the 4th valve pocket through hole section and form fixed company with the valve pocket
It connects, the upper surface of the spring base is located at the lower section of the valve seat and carries out lower limit to the sliding to the valve seat, described
The lower end of spring base extends downwardly outside the valve pocket, and the notch cuttype through hole axially penetrated through, the rank are equipped with inside the spring base
The under shed of ladder type through-hole constitutes third hydraulic fluid port；
Check valve sheet, the check valve sheet are located in the notch cuttype through hole of the spring base, are equipped in the check valve sheet
The check valve sheet through-hole axially penetrated through, the aperture of the check valve sheet through-hole are greater than the diameter of the valve seat through-hole；
Second spring, the second spring are located in the notch cuttype through hole of the spring base, the upper end of the second spring
Against the lower end surface of the check valve sheet and the lower end of the second spring is resisted against on the step of the spring base inner hole, described
Second spring often push the check valve sheet upwards so that the check valve sheet upper surface against the lower end surface of the valve seat from
And close the valve seat through flow hole；
Wherein, in the end plug blind hole, the first control chamber is defined between the end plug and the bushing upper surface,
In the valve pocket through-hole, the second control chamber is defined between the second balance valve core section upper surface and the bushing lower end surface,
There is the through-flow slot to be connected to second control chamber and the first runner, described second on the lower end surface of the bushing
Third control chamber compatible with first damping hole is formed on the periphery wall of balance valve core section.
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 modified form balanced valve according to an embodiment of the invention；
Fig. 2 is the hydraulic schematic diagram of modified form balanced valve according to an embodiment of the invention；
Fig. 3 is a kind of hydraulic schematic diagram of application scenarios of modified form balanced valve according to an embodiment of the invention.
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 balanced valve according to an embodiment of the present invention.
As shown in Figure 1 to Figure 3, a kind of balanced valve according to an embodiment of the present invention, comprising: valve pocket 1, end plug 2, bushing 3 are put down
Weigh spool 4, the first spring 5, spring base 6, nonreturn valve core 7, second spring 8, spring base 9.
Specifically, valve pocket 1 has valve pocket through-hole up and down.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.There is outward opening on valve pocket 1
First runner 101, second flow channel 102, throttle orifice 103 and the through flow hole 104 being respectively positioned on the periphery wall of valve pocket 1.First runner
101 inner opening is located at the appearing on the stage on terrace of the second valve pocket through hole section, and the inner opening of second flow channel 102 is located at described second
Terrace of appearing on the stage on the internal perisporium of valve pocket through hole section and adjacent to the third valve pocket through hole section, the inner opening structure of second flow channel 102
The first damping hole 105 is caused, the inner opening of throttle orifice 103 is located on the internal perisporium of the third valve pocket through hole section, through flow hole 104
Inner opening be 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.Its
In, the outward opening of the outward opening of first runner 101, the outward opening of throttle orifice 103 and through flow hole 104 constitutes the first hydraulic fluid port V, the
The outward opening of two runners 102 constitutes the second hydraulic fluid port X.Advantageously, axial direction arrangement of the throttle orifice 103 along the third valve pocket through hole section
There is multi-turn, multiple throttle orifices 103 that there are the circumferential uniform intervals along the third valve pocket through hole section to arrange on every circle.
End plug 2 is located on valve pocket 1 for closing the upper opening of valve pocket through-hole, has the end plug that Open Side Down blind on end plug 2
Hole, the aperture of the end plug blind hole are less than the aperture of the first valve pocket through hole section.Advantageously, end plug 2 and the valve pocket through-hole
Threaded upper ends connection.
Bushing 3 is located in the first valve pocket through hole section, and 3 upper end of bushing offsets with 2 lower end surface of end plug, the bushing
3 lower ends and the leave from office terrace of the first valve pocket through hole section offset, and have the bushing through-hole axially penetrated through in the bushing 3.
Balance valve core 4 includes the first balance valve core section compatible with the bushing through-hole and the second valve pocket through-hole
Section be adapted and be located at below the first balance valve core section the second balance valve core section, mutually fit with the third valve pocket through hole section
The third balance valve core section matched and be located at below the second balance valve core section, the first balance valve core section can slide up and down to
In the bushing through-hole, the second balance valve core section can slide up and down to cooperation in the second valve pocket through hole section for cooperation
Interior, the third balance valve core section can slide up and down to cooperation in the third valve pocket through hole section, and the balance valve core 4 has
Balance valve core through-hole 401 up and down, the balance valve core through-hole 401 are equipped with third damping hole 402.
Valve seat 6 is moving up and down to be located in the 4th valve pocket through hole section, and the valve seat 6 is equipped with the valve axially penetrated through
Block hole 61, the top of the valve seat through-hole 61 are equipped with inner conical surface, are along the circumferential direction evenly equipped with multiple axial directions on the valve seat 6 and pass through
The valve seat through flow hole 62 worn.
First spring 5 is located in the end plug blind hole, and the upper end of first spring 5 is against the bottom surface of the end plug blind hole
And the lower end of first spring 5, against the upper surface of the first balance valve core section, first spring 5 often pushes downwards institute
State balance valve core 4 so that the second balance valve core section lower end surface against the third valve pocket through hole section terrace of appearing on the stage, this
When, the first preset distance, the third are spaced between the upper surface of the second balance valve core section and the lower end surface of the bushing
The lower end of balance valve core section extends downwardly into the 4th valve pocket through hole section.
The upper end of spring base 9 is located in the 4th valve pocket through hole section and forms a fixed connection with the valve pocket 1, the bullet
The upper surface of spring abutment 9 is located at the lower section of the valve seat 6 and carries out lower limit, the spring base 9 to the sliding to the valve seat 6
Lower end extend downwardly outside the valve pocket 1, the notch cuttype through hole that axially penetrates through, the step type are equipped with inside the spring base 9
The under shed of through-hole constitutes third hydraulic fluid port C.
Check valve sheet 7 is located in the notch cuttype through hole of the spring base 9, is equipped in the check valve sheet 7 and to axially penetrate through
Check valve sheet through-hole 71, the aperture of the check valve sheet through-hole 71 are greater than the diameter of the valve seat through-hole 61.
Second spring 8 is located in the notch cuttype through hole of the spring base 9, and the upper end of the second spring 8 is against the list
The lower end of lower end surface and the second spring 8 to valve block 7 is resisted against on the step of 9 inner hole of spring base, second bullet
Spring 8 upwards often push the check valve sheet 7 so that the check valve sheet 7 upper surface against the lower end surface of the valve seat 6 to
Close the valve seat through flow hole 62.
Wherein, in the end plug blind hole, the end plug 2 and the bushing define the first control chamber between 3 upper surface
1a, in the valve pocket through-hole, the second balance valve core section upper surface and the bushing define the second control between 3 lower end surface
Chamber 1b processed has on the lower end surface of the bushing 3 to be connected to the through-flow of the second control chamber 1b and the first runner 101
Slot 31 is formed with third control compatible with first damping hole 105 on the periphery wall of the second balance valve core section
Chamber 1c.
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 first hydraulic fluid port V is connected with the hydraulic fluid port A of reversal valve 10, third hydraulic fluid port C and hydraulic cylinder 11
Rodless cavity be connected, the rod chamber of the second hydraulic fluid port X and hydraulic cylinder 11 is connected with the hydraulic fluid port B of reversal valve 10.
(1) uphill process, the pressure oil of reversal valve 10 reach the first hydraulic fluid port V of balanced valve, in the pressure oil of the first hydraulic fluid port V
A part by first runner 101 enter the second control chamber 1b, so that balance valve core 4 is kept position as shown in Figure 1, balanced valve
Core 4 closes throttle orifice 103.Another part in the pressure oil of first hydraulic fluid port V pushes check valve sheet 7 downward by through flow hole 104
Movement overcomes the active force of second spring 8 to open valve seat through flow hole 62, and oil reaches hydraulic through the first hydraulic fluid port V inflow third hydraulic fluid port C
The rodless cavity of cylinder 11 pushes 11 uplink of hydraulic cylinder.It is not have throttling action that this stage oil liquid, which flows into third hydraulic fluid port C by the first hydraulic fluid port V,
's.
(2) during declining, reversal valve 10 commutates, and the pressure oil of the second hydraulic fluid port X enters the by the first damping hole 105
Three control chamber 1c are applied on balance valve core 4, overcome the active force of the first spring 5, and balance valve core 4 moves up, while in third oil
Check valve sheet 7 and valve seat 6 are moved upwardly until that the upper surface of valve seat 6 arrives to platform under the pressure of mouth C and the active force of second spring 8
Terrace separates through flow hole 104 and third hydraulic fluid port C.Second hydraulic fluid port X pressure increase, balance valve core 4 just move up further, gradually expose
The each throttle orifice 103 covered in front of by diameter, such area of passage are that mitigation is increased, and load lowering velocity is available
Accurate control.The gradual change of area of passage is realized by drilling gradually communication, and processing cost is low to be easy to control.
(3) stopped process, the second hydraulic fluid port X pressure reduction, the first spring 5 push balance valve core 4 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, third hydraulic fluid port C pressure
Hydraulic oil is applied on the annular active area of balance valve core 4, if surge is more than the active force of the first spring 5, balance
Spool 4 will quickly open throttle orifice 103, and compression shock buffering is fallen.
That is, (1) throttle orifice 103 is disposed with multi-turn along the axial direction of the third valve pocket through hole section, have on every circle
The multiple throttle orifices 103 arranged along the circumferential uniform intervals of the third valve pocket through hole section, when balance valve core 4 is moved upwards valve
When mouth is opened, these throttle orifices 103 can be successively opened, are configured by reasonable pore size and axially spaced-apart, it can be accurate
Area of passage variation is controlled, thus accurate flow control.
(2) what is passed through when load rises is through flow hole 104, valve seat through flow hole 62；What is passed through when load decline is balanced valve
Core 4, throttle orifice 103, valve seat through-hole 61；Section can be passed through when loading speed when rising in this way to be unaffected, and declining
Flow control decrease speed.
It (3) is the unlatching of check valve sheet 7 when load rises；What is passed through when load decline is the unlatching of balance valve core 4；It compares
In the prior art, the shock number of check valve sheet 7, balance valve core 4 and valve seat 6 can be reduced in this way, and then is increased using the longevity
Life.
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 (3)
1. a kind of modified form balanced valve characterized by comprising
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
First runner, second flow channel, throttle orifice and the through flow hole being respectively positioned on the periphery wall of the valve pocket, the interior of the first runner are opened
Mouth being appeared on the stage on terrace positioned at the second valve pocket through hole section, and the inner opening of the second flow channel is located at the second valve pocket through-hole
On the internal perisporium of section and the inner opening of appear on the stage terrace and the second flow channel of the neighbouring third valve pocket through hole section is configured to the
The inner opening of one damping hole, 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 the outward opening of first runner, the outward opening of the throttle orifice and the through flow hole constitutes the first hydraulic fluid port, described
The outward opening of second flow channel constitutes the second hydraulic fluid port；
End plug, the end plug are located on the valve pocket for closing the upper opening of the valve pocket through-hole, have on the end plug and open
The downward end plug blind hole of mouth, the aperture of the end plug blind hole are less than the aperture of the first valve pocket through hole section；
Bushing, the bushing are located in the first valve pocket through hole section, and the bushing upper end offsets with the end plug lower end surface, institute
It states bushing lower end and the leave from office terrace of the first valve pocket through hole section offsets, have the bushing axially penetrated through logical in the bushing
Hole；
Balance valve core, the balance valve core include the first balance valve core section compatible with the bushing through-hole and described second
Valve pocket through hole section be adapted and be located at the first balance valve core section below the second balance valve core section, with the third valve pocket through hole section
The third balance valve core section for being adapted and being located at below the second balance valve core section, the first balance valve core section can go up downslide
Cooperate in the bushing through-hole dynamicly, the second balance valve core section can slide up and down to cooperation in the second valve pocket through-hole
In section, the third balance valve core section can slide up and down to cooperation in the third valve pocket through hole section, the balance valve core tool
There is balance valve core through-hole up and down, the balance valve core through-hole is equipped with third damping hole；
Valve seat, the valve seat is moving up and down to be located in the 4th valve pocket through hole section, and the valve seat is equipped with and axially penetrates through
Valve seat through-hole, the top of the valve seat through-hole is equipped with inner conical surface, is along the circumferential direction evenly equipped with multiple axial directions on the valve seat and passes through
The valve seat through flow hole worn；
First spring, first spring are located in the end plug blind hole, and the upper end of first spring is blind against the end plug
The bottom surface in the hole and lower end of first spring is against the upper surface of the first balance valve core section, first spring is normal downwards
Push the balance valve core so that the third balance valve core section lower end surface on the inner conical surface of the valve seat to separate
Three hydraulic fluid ports are connected to the 4th valve pocket through hole section；
Spring base, the upper end of the spring base are located in the 4th valve pocket through hole section and form a fixed connection with the valve pocket,
The upper surface of the spring base is located at the lower section of the valve seat and carries out lower limit, the spring to the sliding to the valve seat
The lower end of seat extends downwardly outside the valve pocket, and the notch cuttype through hole axially penetrated through, the step type are equipped with inside the spring base
The under shed of through-hole constitutes third hydraulic fluid port；
Check valve sheet, the check valve sheet are located in the notch cuttype through hole of the spring base, are equipped in the check valve sheet axial
Perforative check valve sheet through-hole, the aperture of the check valve sheet through-hole are greater than the diameter of the valve seat through-hole；
Second spring, the second spring are located in the notch cuttype through hole of the spring base, the upper end of the second spring against
The lower end surface of the check valve sheet and the lower end of the second spring are resisted against on the step of the spring base inner hole, and described second
Spring often push the check valve sheet upwards so that the check valve sheet upper surface against the lower end surface of the valve seat to sealing
Close the valve seat through flow hole；
Wherein, in the end plug blind hole, the first control chamber is defined between the end plug and the bushing upper surface, described
In valve pocket through-hole, the second control chamber is defined between the second balance valve core section upper surface and the bushing lower end surface, it is described
There is the through-flow slot to be connected to second control chamber and the first runner, in second balance on the lower end surface of bushing
Third control chamber compatible with first damping hole is formed on the periphery wall of spool section.
2. modified form balanced valve according to claim 1 or 2, which is characterized in that the throttle orifice is along the third valve pocket
The axial direction of through hole section is disposed with multi-turn, there are the circumferential uniform intervals along the third valve pocket through hole section to arrange multiple on every circle
The throttle orifice.
3. modified form balanced valve according to claim 1 or 2, which is characterized in that the end plug and the valve pocket through-hole
Threaded upper ends connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810961823.9A CN109026891B (en) | 2018-08-22 | 2018-08-22 | A kind of modified form balanced valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810961823.9A CN109026891B (en) | 2018-08-22 | 2018-08-22 | A kind of modified form balanced valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109026891A true CN109026891A (en) | 2018-12-18 |
| CN109026891B CN109026891B (en) | 2019-11-19 |
Family
ID=64626821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810961823.9A Active CN109026891B (en) | 2018-08-22 | 2018-08-22 | A kind of modified form balanced valve |
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| CN (1) | CN109026891B (en) |
Citations (8)
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|---|---|---|---|---|
| JPS58102874A (en) * | 1981-12-15 | 1983-06-18 | Yunitsuku:Kk | Counterbalance valve |
| CN201206654Y (en) * | 2008-04-14 | 2009-03-11 | 梅张龙 | Balancing valve |
| CN101634317A (en) * | 2009-08-21 | 2010-01-27 | 宁波汉商液压有限公司 | Plug-in type balance valve |
| CN201475070U (en) * | 2009-08-21 | 2010-05-19 | 宁波汉商液压有限公司 | Cartridge balance valve |
| CN102996556A (en) * | 2012-12-04 | 2013-03-27 | 怀特(中国)驱动产品有限公司 | Direct-acting type hydraulic threaded cartridge balanced valve |
| US20160076557A1 (en) * | 2014-09-16 | 2016-03-17 | Sun Hydraulics Corporation | Counterbalance valve with dual or triple pilot ratio |
| CN106015674A (en) * | 2016-08-13 | 2016-10-12 | 李军 | Plug-in type balance valve |
| CN106015673A (en) * | 2016-08-13 | 2016-10-12 | 李军 | Balance valve with buffering function |
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2018
- 2018-08-22 CN CN201810961823.9A patent/CN109026891B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58102874A (en) * | 1981-12-15 | 1983-06-18 | Yunitsuku:Kk | Counterbalance valve |
| CN201206654Y (en) * | 2008-04-14 | 2009-03-11 | 梅张龙 | Balancing valve |
| CN101634317A (en) * | 2009-08-21 | 2010-01-27 | 宁波汉商液压有限公司 | Plug-in type balance valve |
| CN201475070U (en) * | 2009-08-21 | 2010-05-19 | 宁波汉商液压有限公司 | Cartridge balance valve |
| CN102996556A (en) * | 2012-12-04 | 2013-03-27 | 怀特(中国)驱动产品有限公司 | Direct-acting type hydraulic threaded cartridge balanced valve |
| US20160076557A1 (en) * | 2014-09-16 | 2016-03-17 | Sun Hydraulics Corporation | Counterbalance valve with dual or triple pilot ratio |
| CN106015674A (en) * | 2016-08-13 | 2016-10-12 | 李军 | Plug-in type balance valve |
| CN106015673A (en) * | 2016-08-13 | 2016-10-12 | 李军 | Balance valve with buffering function |
| CN106015673B (en) * | 2016-08-13 | 2018-06-01 | 江苏盐电阀门有限公司 | A kind of balanced valve with pooling feature |
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|---|---|
| CN109026891B (en) | 2019-11-19 |
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Effective date of registration: 20191028 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: 528000 255, 1 floor of 1 harvest 1 Street, Chao'an Road, Chancheng District, Foshan, Guangdong Applicant before: Foshan Xin Zhu Pu Si Machinery Technology Co., Ltd. |
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