CN108953266A - A kind of balanced valve opened stage by stage - Google Patents
A kind of balanced valve opened stage by stage Download PDFInfo
- Publication number
- CN108953266A CN108953266A CN201810952003.3A CN201810952003A CN108953266A CN 108953266 A CN108953266 A CN 108953266A CN 201810952003 A CN201810952003 A CN 201810952003A CN 108953266 A CN108953266 A CN 108953266A
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- Prior art keywords
- valve
- hole section
- spring
- hole
- section
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Pressure Circuits (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The balanced valve according to an embodiment of the present invention opened stage by stage, comprising: valve body, end plug, guide piston, balance valve core, the first retaining ring, the first spring, second spring, second spring seat, nonreturn valve core, third spring.The balanced valve according to an embodiment of the present invention opened stage by stage 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 balanced valve opened stage by stage.
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
The balanced valve opened stage by stage.
The balanced valve that one kind according to an embodiment of the present invention is opened stage by stage, 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 with it is described
5th runner of the terrace of appearing on the stage of the 4th valve pocket through hole section has the neighbouring third valve hole section in the second flow channel
It appears on the stage the first damping hole of terrace, there is the second of the terrace of appearing on the stage of the neighbouring 5th valve hole section in the third flow channel
The outward opening of damping hole, the outward opening of the first runner, the outward opening of the 4th runner and the 5th runner is constituted
The outward opening of first hydraulic fluid port, the outward opening of the second flow channel and the third flow channel constitutes 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 and second spring, first spring are located in the sliding sleeve blind hole, the upper end of first spring
Against the lower end of the end plug and first spring against the upper end of first glissile segment, the second spring is socketed in institute
It states on sliding sleeve, the upper end of the second spring is logical against second valve pocket against the lower end of the end plug and the second spring
The terrace of appearing on the stage of hole section, the internal diameter of the second spring are less than the aperture of the second valve pocket through hole section and the third spring
Outer diameter is greater than the aperture of the second valve pocket through hole section, and the second spring often pushes the guide piston downwards so that the elder generation
The lower end surface of guide piston against the 4th valve hole section terrace of appearing on the stage, make the lower end surface of the piston main body section with it is described
The first preset distance of top bar face interval of third valve hole section is to limit the first control chamber, make the piston main body section
Upper surface is equal with the terrace of appearing on the stage of the second valve pocket through hole section, makes the lower end surface of first retaining ring and the balance valve core
The upper surface of second glissile segment offsets, and first spring often pushes the balance valve core downwards so as to make the third glissile segment
Lower end surface against appear on the stage terrace and the lower end that limits the second control chamber, make the 4th glissile segment of the fifth hole section
Below the leave from office terrace for extending downwardly into the 6th valve hole section；
Second spring seat, the fixation of second spring seat 7 are located in the 7th valve casing through hole section；
Nonreturn valve core, the nonreturn valve core include can slide up and down to cooperation it is unidirectional in the 7th valve casing through 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 casing through hole section, and the lower end of the nonreturn valve core through-hole constitutes third hydraulic fluid port；
Third spring, the third spring are socketed in the nonreturn valve core undergauge section, and the upper end of the third spring is supported
By the lower end surface of the nonreturn valve core main paragraph and the lower end of the third spring is against the second spring seat, the third 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 casing through hole section are got out of a predicament or an embarrassing situation
The second preset distance of face interval.
Advantageously, the balanced valve opened stage by stage further includes the second retaining ring, and second retaining ring is embedded described
With the fixation second spring seat in 7th valve hole section.
Advantageously, the coefficient of stiffiness of first spring is less than the coefficient of stiffiness of the second spring.
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 third 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 the balanced valve according to an embodiment of the invention opened stage by stage；
Fig. 2 is the hydraulic schematic diagram of the balanced valve according to an embodiment of the invention opened stage by stage；
Fig. 3 is the hydraulic principle of an application scenarios of the balanced valve according to an embodiment of the invention opened stage by stage
Figure.
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 the balanced valve according to an embodiment of the present invention opened stage by stage.
As shown in Figure 1 to Figure 3, the balanced valve according to an embodiment of the present invention opened stage by stage, comprising: valve body 1, end plug 2,
Guide piston 3, balance valve core 4, the first retaining ring 5, the first spring 6a, second spring 6b, second spring seat 7, nonreturn valve core 8, the
Three spring 6c.
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
5th runner 105 of body through hole section.There is the first of the terrace of appearing on the stage of the neighbouring third valve hole section in second flow channel 102
Damping 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.The
The outward opening of the outward opening of one runner 101, the outward opening of the 4th runner 104 and the 5th runner 105 constitutes the first hydraulic fluid port V, the
The outward opening of two runners 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 of the first valve hole section has the sliding sleeve blind hole that Open Side Down on sliding sleeve, and the aperture of the sliding sleeve blind hole is less than
Aperture and fiveth valve body of the outer diameter of the 5th valve hole section and the sliding sleeve between the 4th valve pocket through hole section
Between the aperture of through hole section.
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, and the upper end of second spring 6b is against end plug 2
And the lower end of second spring 6b is against the terrace of appearing on the stage of the second valve pocket through hole section, the internal diameter of second spring 6b is less than described the
The aperture of two valve pocket through hole sections and the outer diameter of second spring 6b are greater than the aperture of the second valve pocket through hole section.Second spring 6b to
It is lower often push guide piston 3 so that guide piston 3 lower end surface against the 4th valve hole section terrace of appearing on the stage, make it is described
The first preset distance of top bar face interval of the lower end surface of piston main body section and the third valve hole section is to limit first
Control chamber 1a, make equal between 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, make described
The lower end surface of first retaining ring 5 and the upper surface of 4 second glissile segment of balance valve core offset.First spring 6a often pushes downwards flat
Weighing apparatus spool 4 is so that the lower end surface of the third glissile segment offsets limits the second control chamber 1b, makes under the 4th glissile segment
End extends downwardly into the leave from office terrace of the 6th valve hole section or less.
The fixation of second spring seat 7 is located in the 7th valve casing through hole section.Advantageously, the balance opened stage by stage
Valve further includes the second retaining ring 9, and 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 casing through 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 casing through hole section, nonreturn valve core through-hole 801 constitutes third hydraulic fluid port C.
Third spring 6c is socketed in the nonreturn valve core undergauge section, and the upper end of third spring 6c is against the nonreturn valve core
The lower end surface of the main paragraph and lower end of third spring 6c is against second spring seat 7, third spring 6c often pushes nonreturn valve core 8 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 second 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 casing through hole section.
An example according to the present invention, the coefficient of stiffiness of the first spring 6a are less than the coefficient of stiffiness of second spring 6b.
Advantageously, when balance valve core 4 and guide piston 3 are at least overcome the first spring 6a and the second bullet by external force
When the effect of spring 6b moves up so that the lower end surface of balance valve core 4 is higher than the leave from office terrace of the 6th valve hole section, the
Three spring 6c push up nonreturn valve core 8 so that nonreturn valve core 8 upper surface getting out of a predicament or an embarrassing situation against the 6th valve hole section
Face.
It following is a brief introduction of the course of work of the balanced valve according to an embodiment of the present invention opened stage by stage.
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 rod chamber of the second hydraulic fluid port X and hydraulic cylinder 14 is connected with the actuator port B of reversal valve 13.
The working principle of the balanced valve according to an embodiment of the present invention opened stage by stage is divided into rising, stopping and decline three
Process.
(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 third spring 6c 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, two stage control balance valve cores 4 are divided into according to the second hydraulic fluid port X pressure size and are moved upwards, opens the first hydraulic fluid port V and the
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 what two stages carried out, 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 drive elder generation by the first retaining ring 5
The active force that guide piston 3 overcomes the first spring 6a and second spring 6b common moves upwards, and balance valve core 4 is made to open valve port, the
The oil liquid of three hydraulic fluid port C flows into the first hydraulic fluid port V, and load is begun to decline.In the first stage in motion process, due to the second hydraulic fluid port X's
Pressure is lower, and the pressure oil of the second hydraulic fluid port X is applied on guide piston 3 after entering the first control chamber 1a by the first damping hole 106
The active force of second spring 6b can not be overcome.
Second stage: 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 second spring 6b's
Active force, guide piston 3 move upwards, the terrace and the second of balance valve core 4 of appearing on the stage of the second piston through hole section of guide piston 3
The lower end surface of glissile segment is in contact, and the second hydraulic fluid port X pressure acts on upward gram common on guide piston 3 and balance valve core 4 at this time
Take the active force of the first spring 6a and second spring 6b.In this stage, the increase of the second hydraulic fluid port X pressure value is for balance valve core 4
The influence rate of shifting amount becomes larger.It is such to be advantageous in that, lesser operating condition is loaded for third hydraulic fluid port C, such as hoist engine
When control, the upper non-loaded weight for only linking up with itself of hoist engine hook is equivalent to zero load, and when hoist engine zero load is not also related to
The problem of load movement stability, therefore the second hydraulic fluid port X pressure can be made to increase the influence rate of 4 displacement of balance valve core
Greatly, the pressure that can reduce the second hydraulic fluid port X compared with the existing technology in this way, 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 8 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 0.2mm；In second stage, the second every increase 0.5MPA of hydraulic fluid port X pressure, balance valve core
8 displacements increase 0.5mm.And in the prior art, the second hydraulic fluid port X pressure is solid for the influence rate of 4 displacement of balance valve core
Fixed.
(3) stopped process, the second hydraulic fluid port X pressure reduction push flat under the action of the first spring 6a and second spring 6b
Weighing apparatus spool 4 moves down, and valve port is shut, and 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 (4)
1. the balanced valve that one kind is opened stage by stage 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 4th valve
The 5th runner of the terrace of appearing on the stage of through hole section is covered, there is the top bar of the neighbouring third valve hole section in the second flow channel
First damping hole in face has the second damping of the terrace of appearing on the stage of the neighbouring 5th valve hole section in the third flow channel
The outward opening in hole, the outward opening of the first runner, the outward opening of the 4th runner and the 5th runner constitutes first
The outward opening of hydraulic fluid port, the outward opening of the second flow channel and the third flow channel constitutes 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 and second spring, first spring are located in the sliding sleeve blind hole, the upper end of first spring against
The lower end of the end plug and first spring is socketed in the cunning against the upper end of first glissile segment, the second spring
It puts on, the upper end of the second spring is against the lower end of the end plug and the second spring against the second valve pocket through hole section
Terrace of appearing on the stage, the internal diameter of the second spring is less than the aperture of the second valve pocket through hole section and the outer diameter of the third spring
Greater than the aperture of the second valve pocket through hole section, the second spring often pushes the guide piston downwards so that the guide is living
The lower end surface of plug is against the terrace of appearing on the stage of the 4th valve hole section, the lower end surface for making the piston main body section and the third
Upper end of the first preset distance of top bar face interval of valve hole section to limit the first control chamber, make the piston main body section
Face is equal with the terrace of appearing on the stage of the second valve pocket through hole section, makes the lower end surface of first retaining ring and the balance valve core second
The upper surface of glissile segment offsets, and first spring often pushes the balance valve core downwards so as to make under the third glissile segment
End face terrace and limits the second control chamber, keeps the lower end of the 4th glissile segment downward against appearing on the stage for the fifth hole section
Protrude into the leave from office terrace of the 6th valve hole section or less；
Second spring seat, the second spring seat fixation are located in the 7th valve casing through 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 casing through 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 casing through hole section, the lower end of the nonreturn valve core through-hole constitutes third hydraulic fluid port；
Third spring, the third spring are socketed in the nonreturn valve core undergauge section, and the upper end of the third spring is against institute
The lower end of the lower end surface of nonreturn valve core main paragraph and the third spring is stated against the second spring seat, the third 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 casing through hole section
Every the second preset distance.
2. the balanced valve according to claim 1 opened stage by stage, which is characterized in that it further include the second retaining ring, described
Two retaining rings are embedded in the 7th valve hole section with the fixation second spring seat.
3. the balanced valve according to claim 1 opened stage by stage, which is characterized in that the coefficient of stiffiness of first spring
Less than the coefficient of stiffiness of the second spring.
4. the balanced valve according to claim 1 opened stage by stage, which is characterized in that when the balance valve core and the elder generation
Guide piston is at least overcome the effect of first spring and the second spring to move up so that described by external force
When the lower end surface of balance valve core is higher than the leave from office terrace of the 6th valve hole section, the third spring pushes up the list
To spool so that the upper surface of the nonreturn valve core against the 6th valve hole section leave from office terrace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810952003.3A CN108953266B (en) | 2018-08-21 | 2018-08-21 | Balance valve opened in stages |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810952003.3A CN108953266B (en) | 2018-08-21 | 2018-08-21 | Balance valve opened in stages |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108953266A true CN108953266A (en) | 2018-12-07 |
| CN108953266B CN108953266B (en) | 2020-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810952003.3A Active CN108953266B (en) | 2018-08-21 | 2018-08-21 | Balance valve opened in stages |
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| Country | Link |
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| CN (1) | CN108953266B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230615A (en) * | 2019-04-29 | 2019-09-13 | 裕泰液压技术(上海)有限公司 | A kind of plug-in delay overflow valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2553736A1 (en) * | 1975-02-10 | 1976-08-19 | Sperry Rand Corp | COMBINED IDLE, EXHAUST AND LOAD COMPENSATION VALVE FOR HYDRAULIC DRIVES |
| CN101634317A (en) * | 2009-08-21 | 2010-01-27 | 宁波汉商液压有限公司 | Plug-in type balance valve |
| CN101865171A (en) * | 2010-07-02 | 2010-10-20 | 镇江大力液压马达有限责任公司 | Thread cartridge balanced valve |
| DE102009053635A1 (en) * | 2009-11-17 | 2011-05-19 | Robert Bosch Gmbh | Pilot operated pressure relief valve |
| CN102996556A (en) * | 2012-12-04 | 2013-03-27 | 怀特(中国)驱动产品有限公司 | Direct-acting type hydraulic threaded cartridge balanced valve |
| CN105221509A (en) * | 2015-11-02 | 2016-01-06 | 宁波江北宇洲液压设备厂 | A kind of equilibrium valve opened stage by stage |
| DE102015001755A1 (en) * | 2015-02-11 | 2016-08-11 | Hydac Fluidtechnik Gmbh | Pressure relief valve |
| CN106015152A (en) * | 2016-07-19 | 2016-10-12 | 宁波文泽机电技术开发有限公司 | Slowly-opened and rapidly-closed flow type balance valve |
-
2018
- 2018-08-21 CN CN201810952003.3A patent/CN108953266B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2553736A1 (en) * | 1975-02-10 | 1976-08-19 | Sperry Rand Corp | COMBINED IDLE, EXHAUST AND LOAD COMPENSATION VALVE FOR HYDRAULIC DRIVES |
| CN101634317A (en) * | 2009-08-21 | 2010-01-27 | 宁波汉商液压有限公司 | Plug-in type balance valve |
| DE102009053635A1 (en) * | 2009-11-17 | 2011-05-19 | Robert Bosch Gmbh | Pilot operated pressure relief valve |
| CN101865171A (en) * | 2010-07-02 | 2010-10-20 | 镇江大力液压马达有限责任公司 | Thread cartridge balanced valve |
| CN102996556A (en) * | 2012-12-04 | 2013-03-27 | 怀特(中国)驱动产品有限公司 | Direct-acting type hydraulic threaded cartridge balanced valve |
| DE102015001755A1 (en) * | 2015-02-11 | 2016-08-11 | Hydac Fluidtechnik Gmbh | Pressure relief valve |
| CN105221509A (en) * | 2015-11-02 | 2016-01-06 | 宁波江北宇洲液压设备厂 | A kind of equilibrium valve opened stage by stage |
| CN106015152A (en) * | 2016-07-19 | 2016-10-12 | 宁波文泽机电技术开发有限公司 | Slowly-opened and rapidly-closed flow type balance valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230615A (en) * | 2019-04-29 | 2019-09-13 | 裕泰液压技术(上海)有限公司 | A kind of plug-in delay overflow valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108953266B (en) | 2020-06-19 |
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