CN108709000B - A kind of flow type balanced valve of setting pressure automatic adjustment - Google Patents
A kind of flow type balanced valve of setting pressure automatic adjustment Download PDFInfo
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- CN108709000B CN108709000B CN201810962772.1A CN201810962772A CN108709000B CN 108709000 B CN108709000 B CN 108709000B CN 201810962772 A CN201810962772 A CN 201810962772A CN 108709000 B CN108709000 B CN 108709000B
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
- F16K17/065—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure with differential piston
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- General Engineering & Computer Science (AREA)
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- Safety Valves (AREA)
Abstract
The present invention proposes that a kind of flow type balanced valve of setting pressure automatic adjustment includes: valve pocket, end plug, piston, balance valve core, valve seat, the first spring, spring base, check valve sheet, second spring.The flow type balanced valve of setting pressure automatic adjustment according to an embodiment of the present invention, the processing is simple, and area of passage is without mutation, energy conservation and 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 stream of setting pressure automatic adjustment
Amount type 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.Balanced valve spring setting pressure be it is constant, it is anti-for different load behavior balanced valves
To cracking pressure be all fixed and invariable, need to open the control pressure of balanced valve and negative for loading lower operating condition in this way
Carry higher operating condition be it is the same, very big energy loss can be generated in this way, it is not energy-efficient.
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, and area of passage is without mutation, energy-efficient balance
Valve.
A kind of 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, the 4th valve pocket through hole section and the 5th valve pocket through hole section, described
The aperture in the aperture of one valve pocket through hole section, the aperture of the second valve pocket through hole section and the third valve pocket through hole section is from top to bottom
It is sequentially reduced, the aperture of the third valve pocket through hole section, the aperture of the 4th valve pocket through hole section and the 5th valve pocket through-hole
The aperture of section is sequentially increased from top to bottom, and the periphery wall of the valve pocket is equipped with first runner, second flow channel and through flow hole, described
The inner opening of first runner 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 institute
It states on the internal perisporium of the second valve pocket through hole section and appear on the stage terrace and the second flow channel of the neighbouring third valve pocket through hole section
Inner opening is configured to the first damping hole, and the inner opening of the through flow hole is located on the internal perisporium of the 4th valve pocket through hole section and neighbour
The leave from office terrace of the nearly third valve pocket through hole section, wherein the external-open of the outward opening of the first runner and the through flow hole
Mouth constitutes the first hydraulic fluid port, and 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；
Piston, the piston include piston upper section compatible with the end plug blind hole and with the first valve pocket through hole section
Compatible piston lower section, the piston upper section can slide up and down to cooperation in the end plug blind hole, and the piston lower section can
Cooperate in the first valve pocket through hole section up or down, the first piston on the piston upper section with opening upwards is blind
Hole has the second piston blind hole that Open Side Down on the piston lower section, and the first piston blind hole and the second piston are blind
It is connected between hole by the second damping hole；
Valve seat, the valve seat fixation are located in the 5th valve pocket through hole section, and the valve seat is equipped with the valve axially penetrated through
Block hole, the top of the valve seat through-hole is equipped with inner conical surface, and multiple axially penetrate through along the circumferential direction is evenly equipped on the valve seat
Valve seat through flow hole；
Spring base, the upper end of the spring base are located in the 5th valve pocket through hole section and form fixed company with the valve pocket
It connects, the upper surface of the spring base and the lower end surface of the valve seat offset, and the lower end of the spring base extends downwardly the valve pocket
Outside, the notch cuttype through hole axially penetrated through is equipped with inside the spring base, the under shed of the notch cuttype through hole constitutes third hydraulic fluid port；
Balance valve core, the balance valve core include the first balance valve core section compatible with the second piston blind hole, with
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, with described the
Three valve pocket through hole sections are adapted and the third balance valve core section that is located at below the second balance valve core section and logical with the valve seat
The 4th balance valve core section that hole is adapted and is located at below the third balance valve core section, the first balance valve core section can be upper and lower
It is fitted slidably in the second piston blind hole, the second balance valve core section can slide up and down to cooperation in second valve
It covering 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, and the described 4th
Balance valve core section can slide up and down cooperation in the valve seat through-hole and extend downwardly into the spring base notch cuttype through hole, institute
It states on the side wall of the 4th balance valve core section along being axially arranged with to be connected to the third hydraulic fluid port and the 4th valve pocket through hole section
Throttling channel, the balance valve core have balance valve core through-hole up and down, and the balance valve core through-hole is damped equipped with third
Hole；
First spring, first spring are located in the second piston blind hole, and the upper end of first spring is against institute
The lower end of the bottom surface of second piston blind hole and first spring is stated against the upper surface of the first balance valve core section, described
One spring often pushes the piston upwards so that the upper surface of the piston lower section is against the lower end surface of the end plug, and described first
Spring often push the balance valve core downwards so that the third balance valve core section lower end surface against the valve seat inner conical surface
On to separate being connected to for third hydraulic fluid port and the 4th valve pocket through hole section；
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 4th balance valve core section；
Second spring, second spring set are located in the notch cuttype through hole of the spring base, the second spring it is upper
End is 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, institute
It states second spring and often pushes the check valve sheet upwards so that the upper surface of the check valve sheet is against the lower end surface of the valve seat
To 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 piston upper section, in institute
It states in second piston blind hole, the second control chamber is defined between the first balance valve core section and the piston lower section, described
In valve pocket through-hole, third control chamber is defined between the piston and the balance valve core, in the second balance valve core section
The 4th control chamber compatible with first damping hole is formed on periphery wall；
The axial cross section product for enabling the third balance valve core section is S1, the axial cross section product of the second piston blind hole is
S2, the end plug blind hole axial cross section product be S3, the axial cross section product of the second valve pocket through hole section is S4, then S1, S2, S3
Meet (S3-S2)/(S1-S2)=1.3, and (S4-S1)/(S1-S2) > 3 between S4.
Advantageously, the throttling channel is a plurality of and along the 4th balance valve core section circumference uniform distribution.
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 representation of the flow type balanced valve of setting pressure automatic adjustment according to an embodiment of the invention
Figure；
Fig. 2 is the hydraulic of the flow type balanced valve balanced valve of setting pressure automatic adjustment according to an embodiment of the invention
Schematic diagram；
Fig. 3 is a kind of applied field of the flow type balanced valve of setting pressure automatic adjustment according to an embodiment of the invention
The hydraulic schematic diagram of scape.
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 come be described in detail it is according to an embodiment of the present invention it is a kind of setting pressure automatic adjustment flow type
Balanced valve.
As shown in Figure 1 to Figure 3, the flow type balanced valve of a kind of setting pressure automatic adjustment according to an embodiment of the present invention,
It include: valve pocket 1, end plug 2, piston 3, balance valve core 4, the first spring 5, valve seat 6, check valve sheet 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, the 4th valve pocket through hole section and the 5th valve pocket through hole section, described
The aperture in the aperture of one valve pocket through hole section, the aperture of the second valve pocket through hole section and the third valve pocket through hole section is from top to bottom
It is sequentially reduced, the aperture of the third valve pocket through hole section, the aperture of the 4th valve pocket through hole section and the 5th valve pocket through-hole
The aperture of section is sequentially increased from top to bottom, and the periphery wall of the valve pocket is equipped with first runner 101, second flow channel 102 and through-flow
Hole 103, the inner opening of the first runner 101 are located at the appearing on the stage on terrace of the second valve pocket through hole section, the second flow channel
102 inner opening is located 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
And the inner opening of the second flow channel 102 is configured to the first damping hole 104, the inner opening of the through flow hole 103 is located at described the
Leave from office terrace on the internal perisporium of four valve pocket through hole sections and adjacent to the third valve pocket through hole section, wherein the first runner 101
Outward opening and the outward opening of the through flow hole 103 constitute the first hydraulic fluid port V, the outward opening of the second flow channel 102 constitutes the
Two hydraulic fluid port X.
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.
Piston 3 includes piston upper section compatible with the end plug blind hole and compatible with the first valve pocket through hole section
Piston lower section, the piston upper section can slide up and down to cooperation and (slide up and down in the end plug blind hole and refer to relevant two
Component is in contact, similarly hereinafter), the piston lower section can cooperate up or down (to be moved up and down in the first valve pocket through hole section
Refer to and do not contacted between relevant two components, similarly hereinafter), with the first piston blind hole of opening upwards on the piston upper section,
There is the second piston blind hole that Open Side Down on the piston lower section, the first piston blind hole and the second piston blind hole it
Between by the second damping hole 301 be connected to.
The fixation of valve seat 6 is located in the 5th valve pocket through hole section, and the valve seat 6 is equipped with the valve seat through-hole axially penetrated through,
The top of the valve seat through-hole is equipped with inner conical surface, and it is logical that multiple valve seats axially penetrated through are along the circumferential direction evenly equipped on the valve seat 6
Discharge orifice 61.
The upper end of spring base 9 is located in the 5th valve pocket through hole section and forms a fixed connection with the valve pocket 1, the bullet
The upper surface of spring abutment 9 and the lower end surface of the valve seat 6 offset, and the lower end of the spring base 9 extends downwardly outside the valve pocket 1, institute
The notch cuttype through hole for being equipped with and axially penetrating through inside spring base 9 is stated, the under shed of the notch cuttype through hole constitutes third hydraulic fluid port C.
Balance valve core 4 includes the first balance valve core section compatible with the second piston blind hole and 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
It is adapted and the third balance valve core section that is located at below the second balance valve core section and is adapted with the valve seat through-hole and position
The 4th balance valve core section below the third balance valve core section, the first balance valve core section can slide up and down to cooperation and exist
In the second piston blind hole, the second balance valve core section can slide up and down to cooperation in the second valve pocket through hole section,
The third balance valve core section can slide up and down to cooperation in the third valve pocket through hole section, and the 4th balance valve core section can
The cooperation slided up and down is in the valve seat through-hole and extends downwardly into 9 notch cuttype through hole of spring base, the 4th balance
Edge is axially arranged with the throttling channel 403 to be connected to the third hydraulic fluid port C and the 4th valve pocket through hole section on the side wall of spool section,
Advantageously, the throttling channel is a plurality of and along the 4th balance valve core section circumference uniform distribution.The balance valve core 4 has up and down
The balance valve core through-hole 401 of perforation, the balance valve core through-hole are equipped with third damping hole 402.
First spring 5 is located in the second piston blind hole, and the upper end of the first spring 5 is against the second piston blind hole
The bottom surface and lower end of the first spring 5 is against the upper surface of the first balance valve core section.First spring 5 often pushes piston 3 upwards
So that the upper surface of the piston lower section, against the lower end surface of end plug 2, the first spring 5 often pushes balance valve core 4 so that institute downwards
The lower end surface of third balance valve core section is stated on the inner conical surface of the valve seat 6 to separate third hydraulic fluid port C and the 4th valve pocket
The connection of through hole section.
Check valve sheet 7 is located in the notch cuttype through hole of spring base 9, and the check valve sheet axially penetrated through is equipped in check valve sheet 7
Through-hole, the aperture of the check valve sheet through-hole are greater than the diameter of the 4th balance valve core section.
Second spring 8 is located in the notch cuttype through hole of spring base 9, and the upper end of second spring 8 is against the check valve sheet 7
Lower end surface and the lower end of the second spring 8 are resisted against on the step of 9 inner hole of spring base, and second spring 8 often pushes upwards
Check valve sheet 7 so that check valve sheet 7 upper surface against the lower end surface of valve seat 6 to closed valve seat through flow hole 61.
Wherein, in the end plug blind hole, the first control chamber 1a is defined between the end plug and the piston upper section.In
In the second piston blind hole, the second control chamber 1b is defined between the first balance valve core section and the piston lower section.In
In the valve pocket through-hole, third control chamber 1c is defined between the piston 3 and the balance valve core 4.In second balance
Fourth control chamber 1d compatible with first damping hole is formed on the periphery wall of spool section.
Enable third balance valve core section axial cross section product for S1, the second piston blind hole axial cross section product be S2, institute
The axial cross section product for stating first piston blind hole is S3, the axial cross section product of the second valve pocket through hole section is S4, then S1, S2, S3
Meet (S3-S2)/(S1-S2)=1.3, and (S4-S1)/(S1-S2) > 3 between S4.
The unlatching setting pressure of balance valve core 4 is set automatically by the pressure of third hydraulic fluid port C, the unlatching of balance valve core 4
Pressure is 1.3 times of third hydraulic fluid port C pressure always.This is because third hydraulic fluid port C pressure acts on conjunction upward on balance valve core 4
Power active area is S1-S2, and the active area that third hydraulic fluid port C acts on the resultant force generated on piston 3 to the first spring 5 is
S3-S2, and (S3-S2)/(S1-S2)=1.3, so the first spring 5 sets pressure as 1.3 times of third hydraulic fluid port C pressure, together
When third hydraulic fluid port C is more than certain pressure, piston 3 can move to piston 3 lower end surface and the second valve pocket through hole section
Top bar face contact reaches maximum set pressure, that is, Maximum safe pressure at this time.Such benefit is, as third hydraulic fluid port C
When pressure is relatively low, such as third hydraulic fluid port C pressure is 5MPA, then moves downward opening for compression the first spring 5 setting by piston 3
Opening pressure is 6.5MPA, and the pressure of the second hydraulic fluid port X needs to reach 6.5/ hydraulic control ratio at this time, balance valve core 4 can be upwardly opened.
The ratio of hydraulic control herein is constant=(S4-S1)/(S1-S2) > 3.It is when third hydraulic fluid port C pressure is 20MPA, then downward by piston 3
For the cracking pressure that the first spring of motion compresses 5 is set as 26MPA, the pressure of the second hydraulic fluid port X needs to reach 26/ hydraulic control ratio, can be with
Balance valve core 4 is upwardly opened.As can be seen from the above when loading smaller, the present invention can reduce the pressure of the second hydraulic fluid port X,
No matter payload size cracking pressure is fixed unlike the prior art, can achieve energy-efficient effect in this way.
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 third control chamber 1c, so that piston 3 and balance valve core 4 is kept position as shown in Figure 1
It sets.Another part in the pressure oil of first hydraulic fluid port V is moved downward by the promotion of valve seat through flow hole 61 check valve sheet 7 overcomes second
The active force of spring 8 opens valve seat through flow hole 61, and oil flows into the rodless cavity that third hydraulic fluid port C reaches hydraulic cylinder 11 through the first hydraulic fluid port V,
Push 11 uplink of hydraulic cylinder.This stage oil liquid flows into third hydraulic fluid port C by the first hydraulic fluid port V and does not have throttling action.
(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 104
Four control chamber 1d are applied on balance valve core 4, overcome the active force of the first spring 5, and balance valve core 4 moves up, and first open valve seat 6
Inner conical surface, the second hydraulic fluid port X pressure increase, balance valve core 4 just move up further, and are covered in front of gradually exposing by diameter each
Throttling channel 403, such area of passage are to mitigate increased, the load available accurate control of lowering velocity.
(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, since when external force, which generates load pressure, impacts larger, piston 3 has been moved
To the lower end surface of piston 3 and the top bar face contact of the second valve pocket through hole section, the first spring 5 reaches maximum set pressure,
Third hydraulic fluid port C pressure hydraulic oil is applied on the annular active area (S1-S2) of balance valve core 4, if surge is more than the
The active force of one spring 5, balance valve core 4 will quickly open throttling channel 403, and compression shock buffering is fallen.
That is, circumference uniform distribution of (1) throttling channel 403 along the 4th balance valve core section side wall, when balance valve core 4 to
When valve port is opened in upper movement, the connection area that can gradually control throttling channel 403 by the pressure size of the second hydraulic fluid port X is big
It is small, area of passage variation can be accurately controlled, thus accurate flow control.
(2) what is passed through when load rises is the valve port between valve seat through flow hole 61, check valve sheet 7；Pass through when load decline
Be throttling channel 403；Lower reduction of speed can be controlled by throttling when loading speed when rising in this way to be unaffected, and declining
Degree.
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 flow type balanced valve of setting pressure automatic adjustment 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, the 4th valve pocket through hole section and the 5th valve pocket through hole section, first valve
Cover the aperture in the aperture of through hole section, the aperture of the second valve pocket through hole section and the third valve pocket through hole section from top to bottom successively
Reduce, the aperture of the third valve pocket through hole section, the aperture of the 4th valve pocket through hole section and the 5th valve pocket through hole section
Aperture is sequentially increased from top to bottom, and the periphery wall of the valve pocket is equipped with first runner, second flow channel and through flow hole, and described first
The inner opening of runner 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 described the
On the internal perisporium of two valve pocket through hole sections and appear on the stage terrace and the second flow channel of the neighbouring third valve pocket through hole section in open
Outlet structure is at the first damping hole, and the inner opening of the through flow hole is located on the internal perisporium of the 4th valve pocket through hole section and neighbouring institute
State the leave from office terrace of third valve pocket through hole section, wherein the outward opening structure of the outward opening of the first runner and the through flow hole
At 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 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；
Piston, the piston include piston upper section compatible with the end plug blind hole and mutually fit with the first valve pocket through hole section
The piston lower section matched, the piston upper section can slide up and down to cooperation in the end plug blind hole, and the piston lower section can be upper and lower
Movably cooperate in the first valve pocket through hole section, with the first piston blind hole of opening upwards, institute on the piston upper section
Stating has the second piston blind hole that Open Side Down on piston lower section, between the first piston blind hole and the second piston blind hole
It is connected to by the second damping hole；
Valve seat, the valve seat fixation are located in the 5th valve pocket through hole section, and it is logical that the valve seat is equipped with the valve seat axially penetrated 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 valve seats axially penetrated through on the valve seat
Through flow hole；
Spring base, the upper end of the spring base are located in the 5th valve pocket through hole section and form a fixed connection with the valve pocket,
The upper surface of the spring base and the lower end surface of the valve seat offset, and the lower end of the spring base extends downwardly outside the valve pocket,
The notch cuttype through hole axially penetrated through is equipped with inside the spring base, the under shed of the notch cuttype through hole constitutes third hydraulic fluid port；
Balance valve core, the balance valve core include the first balance valve core section compatible with the second piston blind hole, with it is 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
Set through hole section be adapted and be located at the second balance valve core section below third balance valve core section and with the valve seat through-hole phase
The 4th balance valve core section for being adapted to and being located at below the third balance valve core section, the first balance valve core section can slide up and down
Ground cooperates in the second piston blind hole, and it is logical in second valve pocket that the second balance valve core section can slide up and down to cooperation
In hole section, the third balance valve core section can slide up and down to cooperation in the third valve pocket through hole section, the 4th balance
The cooperation that can slide up and down of spool section in the valve seat through-hole and extends downwardly into the spring base notch cuttype through hole, and described the
Along the throttling being axially arranged with to be connected to the third hydraulic fluid port and the 4th valve pocket through hole section on the side wall of four balance valve core sections
Slot, the balance valve core have balance valve core through-hole up and down, and the balance valve core through-hole is equipped with third damping hole；
First spring, first spring are located in the second piston blind hole, and the upper end of first spring is against described
The bottom surface of the two piston blind holes and lower end of first spring is against the upper surface of the first balance valve core section, first bullet
Spring often pushes the piston upwards so that the upper surface of the piston lower section is against the lower end surface of the end plug, first spring
Downwards often 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 with
Partition third hydraulic fluid port is connected to the 4th valve pocket through hole section；
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 4th balance valve core section；
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 piston upper section, described
In two piston blind holes, the second control chamber is defined between the first balance valve core section and the piston lower section, in the valve pocket
In through-hole, third control chamber is defined between the piston and the balance valve core, in the periphery of the second balance valve core section
The 4th control chamber compatible with first damping hole is formed on wall；
Enable the third balance valve core section axial cross section product for S1, the second piston blind hole axial cross section product be S2, institute
The axial cross section product for stating end plug blind hole is S3, the axial cross section product of the second valve pocket through hole section is S4, then S1, S2, S3 and S4
Between meet (S3-S2)/(S1-S2)=1.3, and (S4-S1)/(S1-S2) > 3.
2. the flow type balanced valve of setting pressure automatic adjustment according to claim 1, which is characterized in that the throttling channel
For circumference uniform distribution a plurality of and along the 4th balance valve core section.
3. it is according to claim 1 setting pressure automatic adjustment flow type balanced valve, which is characterized in that the end plug with
The threaded upper ends of the valve pocket through-hole connect.
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| CN201810962772.1A CN108709000B (en) | 2018-08-22 | 2018-08-22 | A kind of flow type balanced valve of setting pressure automatic adjustment |
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| CN201810962772.1A CN108709000B (en) | 2018-08-22 | 2018-08-22 | A kind of flow type balanced valve of setting pressure automatic adjustment |
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| CN108709000B true CN108709000B (en) | 2019-11-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110486512B (en) * | 2019-08-23 | 2020-11-24 | 山东中力高压阀门股份有限公司 | Safety valve |
| CN110686105B (en) * | 2019-10-12 | 2021-02-26 | 浙江锋源仪表有限公司 | Pilot-operated type pressure reducing valve |
| CN111660439B (en) * | 2020-06-16 | 2022-06-24 | 邵立坤 | Motor control device for concrete mixer truck |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1172172A (en) * | 1997-06-20 | 1999-03-16 | Hitachi Constr Mach Co Ltd | Balance piston type relief valve |
| EP1568924A1 (en) * | 2004-02-25 | 2005-08-31 | Volvo Construction Equipment Holding Sweden AB | Pilot operated relief valve |
| CN1945028A (en) * | 2006-10-10 | 2007-04-11 | 太原理工大学 | Hydraulic balance valve capable of automatically adapting load change |
| DE102007037280A1 (en) * | 2007-08-07 | 2009-02-12 | Hagge, Stefan, Dipl.-Ing. | Minimum pressure valve, has outer valve piston with valve plate driven in outside opening position, which releases flow cross sections and releases fluid flow generated from flow restrictor via main spring |
| CN101644285A (en) * | 2009-08-24 | 2010-02-10 | 宁波汉商液压有限公司 | Counterbalance valve for controlling hydraulic motor |
| CN106195370A (en) * | 2016-08-13 | 2016-12-07 | 李军 | Cartridge balanced valve |
| CN105952705B (en) * | 2016-06-29 | 2018-05-04 | 江苏经纬阀业有限公司 | Balanced valve |
-
2018
- 2018-08-22 CN CN201810962772.1A patent/CN108709000B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1172172A (en) * | 1997-06-20 | 1999-03-16 | Hitachi Constr Mach Co Ltd | Balance piston type relief valve |
| EP1568924A1 (en) * | 2004-02-25 | 2005-08-31 | Volvo Construction Equipment Holding Sweden AB | Pilot operated relief valve |
| CN1945028A (en) * | 2006-10-10 | 2007-04-11 | 太原理工大学 | Hydraulic balance valve capable of automatically adapting load change |
| DE102007037280A1 (en) * | 2007-08-07 | 2009-02-12 | Hagge, Stefan, Dipl.-Ing. | Minimum pressure valve, has outer valve piston with valve plate driven in outside opening position, which releases flow cross sections and releases fluid flow generated from flow restrictor via main spring |
| CN101644285A (en) * | 2009-08-24 | 2010-02-10 | 宁波汉商液压有限公司 | Counterbalance valve for controlling hydraulic motor |
| CN105952705B (en) * | 2016-06-29 | 2018-05-04 | 江苏经纬阀业有限公司 | Balanced valve |
| CN106195370A (en) * | 2016-08-13 | 2016-12-07 | 李军 | Cartridge balanced valve |
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| CN108709000A (en) | 2018-10-26 |
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Effective date of registration: 20191024 Address after: 317609 valve industrial park, Yuhuan City, Taizhou City, Zhejiang Province (Longxi town) Applicant after: Zhejiang stante Valve 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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