CN109027350B - A kind of energy-saving balanced valve - Google Patents
A kind of energy-saving balanced valve Download PDFInfo
- Publication number
- CN109027350B CN109027350B CN201810951995.8A CN201810951995A CN109027350B CN 109027350 B CN109027350 B CN 109027350B CN 201810951995 A CN201810951995 A CN 201810951995A CN 109027350 B CN109027350 B CN 109027350B
- Authority
- CN
- China
- Prior art keywords
- valve
- hole section
- spring
- section
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- F16K17/20—Excess-flow valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/363—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a piston
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Energy-saving balanced valve according to an embodiment of the present invention, comprising: valve body, end plug, guide piston, balance valve core, the first retaining ring, the first spring, second spring, third spring, second spring seat, nonreturn valve core, the 4th spring.Energy-saving balanced valve according to an embodiment of the present invention can reduce pilot pressure size without influencing stability.
Description
Technical field
The present invention relates to a kind of valve modules of hydraulic device, relate in particular to a kind of energy-saving 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.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.Currently available technology is fixed setting pressure,
Generally 1.3~1.5 times of maximum loads, when load become smaller or it is unloaded when similarly need the so big back pressure of full load, because
And pilot pressure must be increased, to open the pressure of setting, 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 can reduce pilot pressure size without influencing stability
Energy-saving balanced valve.
A kind of energy-saving balanced valve according to an embodiment of the present invention, comprising:
Valve body has valve hole up and down on the valve body, what the valve hole was sequentially distributed from top to bottom
Including the first valve hole section, the second valve hole section, third valve hole section, the 4th valve hole section, the 5th valve hole
Section, the 6th valve hole section and the 7th valve hole section, the aperture of the first valve hole section, the second valve hole section
Aperture, the aperture of the third valve hole section, the aperture of the 4th valve hole section and the 5th valve hole section
Aperture be sequentially reduced from top to bottom, the aperture of the 6th valve hole section and the aperture of the 7th valve hole section are situated between
Between the aperture of the third valve hole section and the aperture of the 4th valve hole section and the 6th valve hole section
Aperture be less than the aperture of the 7th valve hole section, there is on the valve body lateral wall for being connected to the valve body and described the
The first runner of the terrace of appearing on the stage of two valve hole sections, the lateral wall for being connected to the valve body are upper with the third valve hole section
The third stream of the terrace of appearing on the stage of the second flow channel of step surface, the lateral wall of the connection valve body and the 5th valve hole section
Road, the connection valve body lateral wall and the 4th runner of the 6th valve hole section, be connected to the 4th runner and the 6th
5th runner of valve hole section has the first of the terrace of appearing on the stage of the neighbouring third valve hole section in the second flow channel
Damping hole, has the second damping hole of the terrace of appearing on the stage of the neighbouring 5th valve hole section in the third flow channel, and described the
The outward opening of the outward opening of one runner, the outward opening of the 4th runner and the 5th runner constitutes the first hydraulic fluid port, described
The outward opening of second flow channel and the outward opening of the third flow channel constitute the second hydraulic fluid port；
End plug, the end plug are located at the upper end that the valve hole is closed on the valve body, the lower end surface of the end plug
It is upper that there is the sliding sleeve for extending downwardly into the first valve hole section, there is the sliding sleeve blind hole that Open Side Down on the sliding sleeve, it is described
The aperture of sliding sleeve blind hole is less than the outer diameter of the 5th valve hole section and the sliding sleeve between the 4th valve pocket through hole section
Between aperture and the aperture of the 5th valve hole section；
Guide piston, the guide piston include the piston that can slide up and down to Pei He in the second valve hole section
Main paragraph and it can slide up and down to and cooperate piston undergauge section in the third valve hole section, have on the guide piston
There is a piston hole up and down, the piston hole includes first piston through hole section and second piston through hole section from top to bottom,
The second piston through hole section is greater than the described 4th adjacent to the lower end of the guide piston, the aperture of the first piston through hole section
The aperture of valve hole section, the aperture of the second piston through hole section are equal to the aperture of the 4th valve hole section；
Balance valve core, the balance valve core include the first glissile segment, linkage section, the second glissile segment, third cunning from top to bottom
Dynamic section and the 4th glissile segment, first glissile segment can slide up and down to cooperation in the sliding sleeve blind hole, second sliding
Section can slide up and down to cooperation in the first piston through hole section, and the third glissile segment can slide up and down to cooperation described
In second piston through hole section and the 4th valve hole section, the 4th glissile segment can slide up and down to cooperation the described 5th
In valve hole section, the outer diameter of the linkage section is less than the outer diameter of first glissile segment and the linkage section for connecting first
Glissile segment and the second glissile segment have balance valve core through-hole up and down, the balance valve core through-hole on the balance valve core
The third damping hole of the upper lower end with the neighbouring balance valve core through-hole；
First retaining ring, the first retaining ring fixation are located in the first piston through hole section, and first retaining ring is described
It is located at the upper surface of described second glissile segment in first piston through hole section and is passed through for the linkage section；
First spring, second spring and third spring, first spring are located in the sliding sleeve blind hole, first bullet
The upper end of spring is against the lower end of the end plug and first spring against the upper end of first glissile segment, the second spring
It is socketed on the sliding sleeve, the upper end of the second spring is against the lower end of the end plug and the second spring against the elder generation
The upper surface of guide piston, the third spring are socketed in the second spring, and the upper end of the third spring is against the end
Against the terrace of appearing on the stage of the second valve pocket through hole section, the internal diameter of the third spring is less than for the lower end of plug and the third spring
The outer diameter of the aperture of the second valve pocket through hole section and the third spring is greater than the aperture of the second valve pocket through hole section, described
Second spring often pushes the guide piston downwards so that the lower end surface of the guide piston is against the 4th valve hole section
Terrace of appearing on the stage, the top bar face interval first of the lower end surface for making the piston main body section and the third valve hole section it is predetermined
Distance is to limit the first control chamber, make the upper surface of the piston main body section and the terrace of appearing on the stage of the second valve pocket through hole section
Be spaced the second preset distance, first spring often push the balance valve core downwards so that second glissile segment lower end surface
Against the second piston through hole section terrace of appearing on the stage, make the upper surface of second glissile segment and the lower end of first retaining ring
Face interval third preset distance, the lower end surface for making the third glissile segment and the 5th valve hole section top bar face interval
4th preset distance is to limit the second control chamber, the lower end of the 4th glissile segment is made to extend downwardly into the 6th valve hole
Below the leave from office terrace of section；
Second spring seat, the second spring seat fixation are located in the 7th valve hole section；
Nonreturn valve core, the nonreturn valve core include can slide up and down to cooperation it is unidirectional in the 7th valve hole section
Spool main paragraph and below the nonreturn valve core main paragraph and can slide up and down to cooperation in the second spring seat
Nonreturn valve core undergauge section, there is on the nonreturn valve core nonreturn valve core through-hole up and down, the nonreturn valve core through-hole
Aperture is less than the aperture of the 5th valve hole section, and the lower end of the nonreturn valve core through-hole constitutes third hydraulic fluid port；
4th spring, the 4th spring are socketed in the nonreturn valve core undergauge section, and the upper end of the 4th spring is supported
By the lower end surface of the nonreturn valve core main paragraph and the lower end of the 4th spring is against the second spring seat, the 4th bullet
Spring often push the nonreturn valve core upwards so that the nonreturn valve core upper surface against the lower end surface of the balance valve core to
First hydraulic fluid port is closed, at this point, the upper surface of the nonreturn valve core main paragraph and the 6th valve hole section are got out of a predicament or an embarrassing situation
The 5th preset distance of face interval.
Advantageously, the energy-saving balanced valve further includes the second retaining ring, and second retaining ring is embedded in the 7th valve
With the fixation second spring seat in body through hole section.
Advantageously, the coefficient of stiffiness of the coefficient of stiffiness of first spring greater than the second spring and first spring
The coefficient of stiffiness be less than the third spring the coefficient of stiffiness.
Advantageously, the 5th preset distance is greater than second preset distance, and the 5th preset distance is greater than described
Third preset distance, the 5th preset distance are equal to the sum of second preset distance and the third preset distance.
Advantageously, when the balance valve core and the guide piston are at least overcome first spring by external force
Effect with the second spring moves up so that the lower end surface of the balance valve core is higher than the 6th valve hole section
When leave from office terrace, the 4th spring pushes up the nonreturn valve core so that the upper surface of the nonreturn valve core is against described
The leave from office terrace of six valve hole sections.
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 schematic diagram of energy-saving balanced valve according to an embodiment of the invention；
Fig. 2 is the hydraulic schematic diagram of energy-saving balanced valve according to an embodiment of the invention；
Fig. 3 is the hydraulic schematic diagram of an application scenarios of energy-saving 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 energy-saving balanced valve according to an embodiment of the present invention.
As shown in Figure 1 to Figure 3, energy-saving balanced valve according to an embodiment of the present invention, comprising: valve body 1, end plug 2, guide are living
Plug 3, balance valve core 4, the first retaining ring 5, the first spring 6a, second spring 6b, third spring 6c, second spring seat 7, nonreturn valve core
8, the 4th spring 6d.
Specifically, having valve hole up and down on valve body 1.What the valve hole was sequentially distributed from top to bottom
Including the first valve hole section, the second valve hole section, third valve hole section, the 4th valve hole section, the 5th valve hole
Section, the 6th valve hole section and the 7th valve hole section, the aperture of the first valve hole section, the second valve hole section
Aperture, the aperture of the third valve hole section, the aperture of the 4th valve hole section and the 5th valve hole section
Aperture be sequentially reduced from top to bottom, the aperture of the 6th valve hole section and the aperture of the 7th valve hole section are situated between
Between the aperture of the third valve hole section and the aperture of the 4th valve hole section and the 6th valve hole section
Aperture be less than the 7th valve hole section aperture.There is the lateral wall and second valve body of connection valve body 1 on valve body 1
The terrace of appearing on the stage of the first runner 101 of the terrace of appearing on the stage of through hole section, the lateral wall for being connected to valve body 1 and the third valve hole section
Second flow channel 102, be connected to valve body 1 lateral wall and the 5th valve hole section terrace of appearing on the stage third flow channel 103, even
The lateral wall of port valve body 1 and the 4th runner 104 of the 6th valve hole section are connected to the 4th runner 104 and the 6th valve body is logical
5th runner 105 of hole section.There is the first damping of the terrace of appearing on the stage of the neighbouring third valve hole section in second flow channel 102
Hole 106 has the second damping hole 107 of the terrace of appearing on the stage of the neighbouring 5th valve hole section in third flow channel 103.It is first-class
The outward opening of the outward opening in road 101, the outward opening of the 4th runner 104 and the 5th runner 105 constitutes the first hydraulic fluid port V, second
The outward opening in road 102 and the outward opening of third flow channel 103 constitute the second hydraulic fluid port X.
End plug 2 is located at the upper end that the valve hole is closed on valve body 1, has on the lower end surface of end plug 2 and extends downwardly into
The sliding sleeve 201 of the first valve hole section has the sliding sleeve blind hole that Open Side Down, the hole of the sliding sleeve blind hole on sliding sleeve 201
Diameter is less than the outer diameter of the 5th valve hole section and the sliding sleeve between the aperture of the 4th valve pocket through hole section and described the
Between the aperture of five valve hole sections.
Guide piston 3 includes the piston main body section that can slide up and down to cooperation in the second valve hole section and can
Slide up and down to the piston undergauge section cooperated in the third valve hole section, there is work up and down on guide piston 3
Through-hole is filled in, the piston hole includes first piston through hole section and second piston through hole section from top to bottom, and the second piston is logical
For hole section adjacent to the lower end of guide piston 3, the aperture of the first piston through hole section is greater than the aperture of the 4th valve hole section,
The aperture of the second piston through hole section is equal to the aperture of the 4th valve hole section.
Balance valve core 4 includes that the first glissile segment, linkage section, the second glissile segment, third glissile segment and the 4th are sliding from top to bottom
Dynamic section, first glissile segment can slide up and down to cooperation in the sliding sleeve blind hole, and second glissile segment can slide up and down
Ground cooperates in the first piston through hole section, and the third glissile segment can slide up and down to cooperation in the second piston through-hole
In section and the 4th valve hole section, the 4th glissile segment can slide up and down to cooperation in the 5th valve hole section
Interior, the outer diameter of the linkage section is less than the outer diameter of first glissile segment and the linkage section is for connecting the first glissile segment and the
Two glissile segments.There is balance valve core through-hole 401 up and down on balance valve core 4, have on balance valve core through-hole 401 neighbouring flat
The third damping hole 402 of the lower end of weighing apparatus valve core through hole 401.
The fixation of first retaining ring 5 is located in the first piston through hole section, and the first retaining ring 5 is in the first piston through hole section
It is passed through positioned at the upper surface of described second glissile segment and for the linkage section.
First spring 6a is located in the sliding sleeve blind hole, and the upper end of the first spring 6a is against end plug 2 and the first spring 6a
Lower end is against the upper end of first glissile segment.Second spring 6b is socketed on sliding sleeve 201, the upper end abutment end of second spring 6b
The lower end of 2 and second spring 6b is filled in against the upper surface of guide piston 3.Third spring 6c is socketed on second spring 6b, third
The upper end of spring 6c is against the lower end of end plug 2 and third spring 6c against the terrace of appearing on the stage of the second valve pocket through hole section, third
The internal diameter of spring 6c is less than the aperture of the second valve pocket through hole section and the outer diameter of third spring 6c is logical greater than second valve pocket
The aperture of hole section.Second spring 6b often pushes guide piston 3 downwards so that the lower end surface of guide piston 3 is against the 4th valve body
The top bar face interval the of the terrace of appearing on the stage of through hole section, the lower end surface for making the piston main body section and the third valve hole section
One preset distance is to limit the first control chamber 1a, the upper surface for making the piston main body section and the second valve pocket through hole section
The second preset distance of top bar face interval.First spring 6a often pushes balance valve core 4 so that under second glissile segment downwards
End face is under the terrace of appearing on the stage of the second piston through hole section, the upper surface for making second glissile segment and the first retaining ring 5
Between end surfaces third preset distance, the lower end surface for making the third glissile segment and the terrace of appearing on the stage of the 5th valve hole section
Every the 4th preset distance to limit the second control chamber 1b, the lower end of the 4th glissile segment is made to extend downwardly into the 6th valve body
Below the leave from office terrace of through hole section.
The fixation of second spring seat 7 is located in the 7th valve hole section.Advantageously, the energy-saving balanced valve also wraps
The second retaining ring 9 is included, the second retaining ring 9 is embedded in the 7th valve hole section to fix second spring seat 7.
Nonreturn valve core 8 include can slide up and down to cooperate nonreturn valve core main paragraph in the 7th valve hole section with
And below the nonreturn valve core main paragraph and the nonreturn valve core undergauge cooperated in second spring seat 7 can be slided up and down to
Section.There is nonreturn valve core through-hole 801 up and down, the aperture of nonreturn valve core through-hole 801 is less than the described 5th on nonreturn valve core 8
The lower end in the aperture of valve hole section, nonreturn valve core through-hole 801 constitutes third hydraulic fluid port C.
4th spring 6d is socketed in the nonreturn valve core undergauge section, and the upper end of the 4th spring 6d is against the nonreturn valve core
The lower end surface of main paragraph and the lower end of the 4th spring 6d often push nonreturn valve core 8 against second spring seat 7, the 4th spring 6d upwards
So that the upper surface of nonreturn valve core 8 is against the lower end surface of balance valve core 4 to the first hydraulic fluid port V of closing.At this point, the nonreturn valve core
The 5th preset distance of face interval of getting out of a predicament or an embarrassing situation of the upper surface of main paragraph and the 6th valve hole section.
An example according to the present invention, the coefficient of stiffiness of the coefficient of stiffiness of the first spring 6a greater than second spring 6b and the
The coefficient of stiffiness of one spring 6a is less than the coefficient of stiffiness of third spring 6c.
A specific embodiment according to the present invention, the 5th preset distance is greater than second preset distance, described
5th preset distance is greater than the third preset distance, and the 5th preset distance is equal to second preset distance and described the
The sum of three preset distances.Advantageously, when balance valve core 4 and guide piston 3 are at least overcome the first spring 6a by external force
Effect with second spring 6b moves up so that the lower end surface of balance valve core 4 is higher than getting out of a predicament or an embarrassing situation for the 6th valve hole section
When face, the 4th spring 6d pushes up nonreturn valve core 8 so that the upper surface of nonreturn valve core 8 is against the 6th valve hole section
Leave from office terrace.
It following is a brief introduction of the course of work of energy-saving balanced valve according to an embodiment of the present invention.
As described in Figure 3, the first hydraulic fluid port V is connected with the actuator port A of reversal valve 13, the nothing of third hydraulic fluid port C and hydraulic cylinder 14
Rod cavity is connected, and the second hydraulic fluid port X is connected with the actuator port B of the uniform reversal valve 13 of the rod chamber of hydraulic cylinder 14.
The working principle of energy-saving balanced valve according to an embodiment of the present invention is divided into three rising, stopping and decline processes.
(1) uphill process, the pressure oil that the pressure oil of reversal valve 13 reaches the first hydraulic fluid port V, the first hydraulic fluid port V of balanced valve are logical
Pushing nonreturn valve core 8 to move downward overcomes the active force of the 4th spring 6d to open valve port, and oil flows into third hydraulic fluid port through the first hydraulic fluid port V
C reaches the rodless cavity of hydraulic cylinder 14, pushes 14 uplink of hydraulic cylinder.
(2) during declining, reversal valve 13 commutates, and the pressure oil of the second hydraulic fluid port X acts on balance valve core 4 and guide piston
On 3, three phases control balance valve core 4 is divided into according to the second hydraulic fluid port X pressure size and is moved upwards, the first hydraulic fluid port V and the is opened
Valve port between three hydraulic fluid port C is supported in control and declines.
Need to control load decline when, that is, oil liquid by third hydraulic fluid port C flow into the first hydraulic fluid port V when, balance valve core 4, first
The movement of guide piston 3 is divided into three phases progress, specific as follows:
First stage: the second hydraulic fluid port X oil inlet, if the second hydraulic fluid port X pressure is lower, oil liquid is by the second hydraulic fluid port X through the second resistance
Enter the second control chamber 1b behind Buddhist nun hole 107, be applied on balance valve core 4, balance valve core 4 is pushed to overcome the effect of the first spring 6a
Power moves upwards.Balance valve core 4 can drive guide piston 3 to overcome second spring 6b by the first retaining ring 5 simultaneously after moving upwards
Active force move upwards, until guide piston 3 starts to contact the upper surface of third spring 6c, nonreturn valve core 8 against described the
The leave from office terrace of six valve hole sections makes balance valve core 4 be in the critical point opened.In the first stage in motion process, second
The pressure of hydraulic fluid port X acts on balance valve core 4, it is only necessary to overcome the active force of the first spring 6a and second spring 6b, it is such
It is advantageous in that for balance valve core 4, the critical point of unlatching is moved to from closed state, does not need wave compared with the existing technology
Take biggish pressure, the present invention can be made just to reach unlatching critical point under lesser second hydraulic fluid port X pressure in this way.
Second stage: continue to increase the pressure value of the second hydraulic fluid port X, the pressure of the second hydraulic fluid port X acts on balance valve core 4 and above pushes away
Dynamic guide piston 3 continues up, and needs to overcome the common work of the first spring 6a, second spring 6b and third spring 6c at this time
With, compared to the quick movement of first stage, this stage the second hydraulic fluid port X pressure increase causes the displacement of balance valve core 4 to reduce,
Because to overcome the active force of three springs simultaneously.Such to be advantageous in that, this phase balancing spool 4 has been switched on and can stablize
Control load movement.Balance valve core 4 is set to generate the same displacement, the increased pressure of second stage the second hydraulic fluid port X is greater than
The pressure of first stage the second hydraulic fluid port X pressurization is not related to load stabilization movement because first stage balance valve core 4 is not opened
Problem, therefore the first stage can be made quickly to move, and the unlatching of second stage balance valve core 4 is related to load movement and stablizes, because
The increase of this second hydraulic fluid port X pressure will reduce the influence rate of 4 displacement of balance valve core.
Phase III: continue to increase the pressure value of the second hydraulic fluid port X, the pressure of the second hydraulic fluid port X passes through after the first damping hole 106
It is applied on guide piston 3, pressure at this time, which acts on the power generated on guide piston 3, can overcome third spring 6c's
Active force (in second stage because of the low active force that can't overcome third spring 6c of the second hydraulic fluid port X pressure), guide piston 3 to
The terrace of appearing on the stage of upper movement, the second piston through hole section of guide piston 3 connects with the lower end surface of the second glissile segment of balance valve core 4
Touching, the second hydraulic fluid port X pressure acts on guide piston 3 and balance valve core 4 power for overcoming three springs upwards jointly at this time.This rank
Section, the increase of the second hydraulic fluid port X pressure value become larger for the influence rate of 4 displacement of balance valve core.It is such to be advantageous in that, for
Third hydraulic fluid port C loads lesser operating condition, such as when for hoist engine control, and hoist engine hook is upper non-loaded only to link up with itself
The problem of weight, is equivalent to zero load, and when hoist engine zero load is not related to load movement stability yet, therefore the second hydraulic fluid port can be made
X pressure increases the influence rate of 4 displacement of balance valve core, can reduce the second hydraulic fluid port X's compared with the existing technology in this way
Pressure generates energy-efficient effect.
For the 4 displacement incrementss of balance valve core caused by the second every increase 0.5MPA of hydraulic fluid port X pressure, to illustrate second
Influence rate of the hydraulic fluid port X pressure for 4 displacement of balance valve core.Such as: in the first stage, the second every increase of hydraulic fluid port X pressure
0.5MPA, 4 displacement of balance valve core increase 0.5mm；In second stage, the second every increase 0.5MPA of hydraulic fluid port X pressure, balance valve core
4 displacements increase 0.2mm；In the phase III, the second every increase 0.5MPA of hydraulic fluid port X pressure, 4 displacement of balance valve core increases
0.5mm.And in the prior art, the second hydraulic fluid port X pressure is constant for the influence rate of 4 displacement of balance valve core.
(3) stopped process, the second hydraulic fluid port X pressure reduction, in the work of the first spring 6a, second spring 6b and third spring 6c
It is moved down with lower promotion balance valve core 4, valve port is shut, the first hydraulic fluid port V and third hydraulic fluid port C cut-off are obstructed.
As described above, the beneficial effects of the present invention are: compared with the prior art, the present invention is not influence load steady
Under the premise of fixed control, the size of the second hydraulic fluid port X pilot pressure can be reduced, and the cracking pressure loaded when small or control is remote
Less than the prior art, there is very big energy-saving effect.
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 energy-saving balanced valve characterized by comprising
Valve body, has valve hole up and down on the valve body, and what the valve hole was sequentially distributed from top to bottom includes
First valve hole section, the second valve hole section, third valve hole section, the 4th valve hole section, the 5th valve hole section,
Six valve hole sections and the 7th valve hole section, the aperture of the first valve hole section, the second valve hole section hole
Diameter, the aperture of the third valve hole section, the aperture of the 4th valve hole section and the hole of the 5th valve hole section
Diameter is sequentially reduced from top to bottom, and the aperture of the 6th valve hole section and the aperture of the 7th valve hole section are between institute
It states between the aperture of third valve hole section and the aperture of the 4th valve hole section and the hole of the 6th valve hole section
Diameter is less than the aperture of the 7th valve hole section, has the lateral wall and second valve for being connected to the valve body on the valve body
First runner, the lateral wall of the connection valve body and the top bar of the third valve hole section of the terrace of appearing on the stage of body through hole section
The third flow channel of the terrace of appearing on the stage of the second flow channel in face, the lateral wall of the connection valve body and the 5th valve hole section connects
Lead to the lateral wall of the valve body and the 4th runner of the 6th valve hole section, be connected to the 4th runner and the 6th valve
5th runner of body through hole section has the first resistance of the terrace of appearing on the stage of the neighbouring third valve hole section in the second flow channel
Buddhist nun hole, has the second damping hole of the terrace of appearing on the stage of the neighbouring 5th valve hole section in the third flow channel, and described first
The outward opening of the outward opening of runner, the outward opening of the 4th runner and the 5th runner constitutes the first hydraulic fluid port, and described the
The outward opening of two runners and the outward opening of the third flow channel constitute the second hydraulic fluid port；
End plug, the end plug are located at the upper end for closing the valve hole on the valve body, have on the lower end surface of the end plug
There is the sliding sleeve for extending downwardly into the first valve hole section, there is the sliding sleeve blind hole that Open Side Down, the sliding sleeve on the sliding sleeve
The aperture of blind hole is less than the outer diameter of the 5th valve hole section and the sliding sleeve between the aperture of the 4th valve pocket through hole section
Between the aperture of the 5th valve hole section；
Guide piston, the guide piston include the piston main body that can slide up and down to Pei He in the second valve hole section
Section and it can slide up and down to and cooperate piston undergauge section in the third valve hole section, have on the guide piston upper
The piston hole of lower perforation, the piston hole include first piston through hole section and second piston through hole section from top to bottom, described
Second piston through hole section is greater than the 4th valve body adjacent to the lower end of the guide piston, the aperture of the first piston through hole section
The aperture of through hole section, the aperture of the second piston through hole section are equal to the aperture of the 4th valve hole section；
Balance valve core, the balance valve core include the first glissile segment, linkage section, the second glissile segment, third glissile segment from top to bottom
With the 4th glissile segment, first glissile segment can slide up and down to cooperation in the sliding sleeve blind hole, and second glissile segment can
Slide up and down to cooperation in the first piston through hole section, the third glissile segment can slide up and down to cooperation described second
In piston hole section and the 4th valve hole section, the 4th glissile segment can slide up and down to cooperation in the 5th valve body
In through hole section, the outer diameter of the linkage section is less than the outer diameter of first glissile segment and the linkage section is for connecting the first sliding
Section and the second glissile segment have balance valve core through-hole up and down on the balance valve core, have on the balance valve core through-hole
There is the third damping hole of the lower end of the neighbouring balance valve core through-hole；
First retaining ring, the first retaining ring fixation are located in the first piston through hole section, and first retaining ring is described first
It is located at the upper surface of described second glissile segment in piston hole section and is passed through for the linkage section；
First spring, second spring and third spring, first spring are located in the sliding sleeve blind hole, first spring
Upper end is against the lower end of the end plug and first spring against the upper end of first glissile segment, the second spring socket
On the sliding sleeve, the upper end of the second spring is living against the guide against the lower end of the end plug and the second spring
The upper surface of plug, the third spring are socketed in the second spring, the upper end of the third spring against the end plug and
Against the terrace of appearing on the stage of the second valve pocket through hole section, the internal diameter of the third spring is less than described for the lower end of the third spring
The outer diameter of the aperture of second valve pocket through hole section and the third spring be greater than the second valve pocket through hole section aperture, described second
Spring often pushes the guide piston downwards so that the lower end surface of the guide piston is against the upper of the 4th valve hole section
Step surface, the lower end surface for making the piston main body section and the third valve hole section the first preset distance of top bar face interval
To limit the first control chamber, make the upper surface of the piston main body section and the top bar face interval of the second valve pocket through hole section
Second preset distance, first spring often push the balance valve core downwards so that second glissile segment lower end surface against
Between the terrace of appearing on the stage of the second piston through hole section, the upper surface for making second glissile segment and the lower end surface of first retaining ring
Every third preset distance, make the lower end surface of the third glissile segment and the top bar face interval the 4th of the 5th valve hole section
Preset distance is to limit the second control chamber, the lower end of the 4th glissile segment is made to extend downwardly into the 6th valve hole section
Below leave from office terrace；
Second spring seat, the second spring seat fixation are located in the 7th valve hole section；
Nonreturn valve core, the nonreturn valve core include the nonreturn valve core that can slide up and down to Pei He in the 7th valve hole section
Main paragraph and below the nonreturn valve core main paragraph and it can slide up and down to and cooperate list in the second spring seat
To spool undergauge section, there is nonreturn valve core through-hole up and down, the aperture of the nonreturn valve core through-hole on the nonreturn valve core
Less than the aperture of the 5th valve hole section, the lower end of the nonreturn valve core through-hole constitutes third hydraulic fluid port；
4th spring, the 4th spring are socketed in the nonreturn valve core undergauge section, and the upper end of the 4th spring is against institute
The lower end of the lower end surface of nonreturn valve core main paragraph and the 4th spring is stated against the second spring seat, the 4th spring to
On often push the nonreturn valve core so that the nonreturn valve core upper surface against the lower end surface of the balance valve core to closing
First hydraulic fluid port, at this point, between the upper surface of the nonreturn valve core main paragraph and the leave from office terrace of the 6th valve hole section
Every the 5th preset distance.
2. energy-saving balanced valve according to claim 1, which is characterized in that it further include the second retaining ring, second retaining ring
It is embedded in the 7th valve hole section with the fixation second spring seat.
3. energy-saving balanced valve according to claim 1, which is characterized in that the coefficient of stiffiness of first spring is greater than institute
The coefficient of stiffiness for stating the coefficient of stiffiness of second spring and first spring is less than the coefficient of stiffiness of the third spring.
4. energy-saving balanced valve according to claim 1, which is characterized in that the 5th preset distance is greater than described second
Preset distance, the 5th preset distance are greater than the third preset distance, and it is pre- that the 5th preset distance is equal to described second
The sum of set a distance and the third preset distance.
5. energy-saving balanced valve according to claim 4, which is characterized in that when the balance valve core and the guide piston
The effect of first spring and the second spring is at least overcome to move up so that the balanced valve by external force
When the lower end surface of core is higher than the leave from office terrace of the 6th valve hole section, the 4th spring pushes up the nonreturn valve core
So that leave from office terrace of the upper surface of the nonreturn valve core against the 6th valve hole section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810951995.8A CN109027350B (en) | 2018-08-21 | 2018-08-21 | A kind of energy-saving balanced valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810951995.8A CN109027350B (en) | 2018-08-21 | 2018-08-21 | A kind of energy-saving balanced valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109027350A CN109027350A (en) | 2018-12-18 |
| CN109027350B true CN109027350B (en) | 2019-10-01 |
Family
ID=64626524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810951995.8A Active CN109027350B (en) | 2018-08-21 | 2018-08-21 | A kind of energy-saving balanced valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109027350B (en) |
-
2018
- 2018-08-21 CN CN201810951995.8A patent/CN109027350B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109027350A (en) | 2018-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102705288B (en) | Anti-shaking balance valve, telescopic control loop of hydraulic cylinder and hydraulic device | |
| CN102562699B (en) | Balance valve, hydraulic cylinder telescopic control loop and crane | |
| CN103899585B (en) | The hydraulic control system of a kind of pair of oil cylinder sequential telescopic, suspension arm mechanism and crane | |
| CN102887447B (en) | Hydraulic control loop of variable amplitude hydraulic cylinder, crane and variable amplitude control method | |
| CN103133446B (en) | Valve rod of multi-path valve and multi-path valve with valve rod | |
| CN104444818A (en) | Hydraulic control system with two sequentially stretched and contracted cylinders, suspension arm mechanism and crane | |
| CN108709000B (en) | A kind of flow type balanced valve of setting pressure automatic adjustment | |
| CN108825577A (en) | A kind of balanced valve of variable hydraulic control ratio | |
| CN108775431A (en) | Balanced valve | |
| CN109027350B (en) | A kind of energy-saving balanced valve | |
| CN108953705B (en) | Pilot balance valve | |
| CN108953266A (en) | A kind of balanced valve opened stage by stage | |
| CN108869431B (en) | A kind of hydraulic control balanced valve more adjustable than ratio | |
| CN105402449B (en) | Hydraulic control one-way valve | |
| CN205715031U (en) | A kind of multiple directional control valve of band mechanical release device | |
| CN108869434B (en) | A kind of balanced valve | |
| CN108843644A (en) | A kind of balanced valve | |
| CN206054411U (en) | The hydraulic control system and single-cylinder bolt type telescopic boom of single-cylinder bolt type telescopic boom | |
| CN108843643A (en) | A kind of cartridge balanced valve | |
| CN109185498B (en) | Proportional balance valve | |
| CN108930681A (en) | A kind of balanced valve of Discrete control | |
| CN103352882B (en) | Landing leg stretching pattern switching valve and engineering machinery | |
| CN108999828A (en) | A kind of balanced valve | |
| CN109058216B (en) | Balance valve | |
| CN207715456U (en) | A kind of high reliability buffering throttling oil cylinder connection valve block assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190906 Address after: 214500 South Side of North Second Ring Road of Jingjiang Economic Development Zone, Taizhou City, Jiangsu Province Applicant after: Jingjiang Changyuan Hydraulic Machinery 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. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |