CN109538563A - A kind of balanced valve - Google Patents
A kind of balanced valve Download PDFInfo
- Publication number
- CN109538563A CN109538563A CN201811403228.XA CN201811403228A CN109538563A CN 109538563 A CN109538563 A CN 109538563A CN 201811403228 A CN201811403228 A CN 201811403228A CN 109538563 A CN109538563 A CN 109538563A
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- Prior art keywords
- valve core
- hole
- hydraulic fluid
- fluid port
- balance
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- 239000012530 fluid Substances 0.000 claims description 97
- 238000007789 sealing Methods 0.000 claims description 36
- 238000013016 damping Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 6
- 238000009827 uniform distribution Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 2
- 238000001727 in vivo Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 238000004134 energy conservation Methods 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 238000005303 weighing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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
- F15B13/026—Pressure compensating 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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
-
- 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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The present invention proposes a kind of balanced valve, comprising: valve body, valve seat, screw plug end spool, steel ball, the first spring, the first retaining ring, reversing valve core, second spring, spring base, control valve core, the second retaining ring, third spring and proportion electro-magnet.Balanced valve according to an embodiment of the present invention, energy conservation do not need pilot handle and hydraulic control proportional multi-way valve.
Description
Technical field
The present invention relates to a kind of valves, relate in particular to a kind of 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.
In addition, in the prior art, the hydraulic circuit containing balanced valve is typically all by hydraulic control proportional multi-way valve, pilot handle and balanced valve
Composition not only consumes energy and constitutes complicated, overall cost height.
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 it is a kind of it is energy-saving, do not need pilot handle and hydraulic control ratio is more
The balanced valve of road valve.
A kind of balanced valve according to an embodiment of the present invention, comprising:
Valve body, the valve body are equipped with the first mounting hole, the second mounting hole and to be connected to the first mounting hole and the second peace
The intercommunicating pore in hole is filled, second mounting hole is the ladder type hole that diameter is sequentially reduced from the bottom to top, is had certainly in the valve body
Upper and lower arranged for interval and the first through-flow slot, the second through-flow slot and the through-flow slot of third being connected to first mounting hole, institute
Stating has the four-way chute being connected to second mounting hole in valve body, have and the first through-flow slot on the side wall of the valve body
First hydraulic fluid port of connection, the second hydraulic fluid port being connected to the second through-flow slot, the third hydraulic fluid port that is connected to the through-flow slot of third and with the 4th
4th hydraulic fluid port of through-flow slot connection, the valve body is interior to be equipped with the first sealing cone in the junction of the second mounting hole and intercommunicating pore；
Screw plug, the screw plug are detachably arranged on second mounting hole to close under second mounting hole
End；
Balance valve core, the balance valve core, which can slide up and down to, to be located in second mounting hole and is located at the screw plug
Above, the balance valve core includes the first convex shoulder being slidably matched with the second mounting hole large aperture portion and the second peace from the bottom to top
The second convex shoulder and matched with the first sealing cone to control the first mounting hole and the second peace that dress hole small-bore portion is slidably matched
The third convex shoulder of hole on-off is filled, second convex shoulder is equipped with small-bore portion and described the to be connected to second mounting hole
Second throttling channel of four hydraulic fluid ports has balance valve core through-hole up and down, the balance valve core through-hole on the balance valve core
It from top to bottom include hole balance valve core through-hole upper section, balance valve core through-hole extension diameter section, balance valve core through-hole middle section and balance valve core
Through-hole lower section, the balance valve core through-hole upper section and the balance valve core through-hole extension diameter section junction are equipped with the second sealing cone,
It is equipped in the balance valve core and is connected to the first through-flow of the balance valve core through-hole extension diameter section and the balance valve core through-hole lower section
Hole, has the damping hole for being connected to the four-way chute and the first through flow hole on the side wall of second convex shoulder, the screw plug with
The first control chamber is defined between the balance valve core；
Plug is stifled, the plug is stifled be fixedly mounted in the balance valve core through-hole the middle section in separate balance valve core through-hole middle section and
The connection of balance valve core through-hole lower section；
First spring, first spring are located in second mounting hole, and the lower end of first spring is against described
The upper end of screw plug and first spring is protruded into the balance valve core through-hole lower section and against balance valve core through-hole middle section
Leave from office terrace, first spring often pushes the balance valve core upwards so that institute is often closed in the upper surface of the balance valve core
State the first sealing cone；
Control valve core, the control valve core include the control that can slide up and down to Pei He in balance valve core through-hole middle section
Spool glissile segment processed and above the control valve core glissile segment and upper end extends upwardly into the balance valve core through-hole upper section
Control valve core undergauge section, the upper surface of the control valve core glissile segment and second sealing cone are matched with described in controlling
The on-off of balance valve core through-hole extension diameter section and balance valve core through-hole upper section has the control valve that Open Side Down in the control valve core
Core blind hole, the upper end of the control valve core blind hole extend upwardly to the control valve core undergauge section, the control valve core undergauge section
Control valve core through flow hole with the periphery wall and the control valve core blind hole for being connected to the control valve core undergauge section；
Reversing valve core, the reversing valve core, which can slide up and down to, to be located in first mounting hole, and the reversing valve core is certainly
Upper and lower including the first glissile segment, the first undergauge section, the second glissile segment and the second undergauge section, the second undergauge section extends downwardly into
It is offseted in the balance valve core through-hole upper section with control valve core undergauge section, second glissile segment is equipped with to be connected to described the
The first segment chute of one hydraulic fluid port and the second hydraulic fluid port；
Second spring, the second spring are located in balance valve core through-hole middle section, and the lower end of the second spring is supported
By the plug, the upper end of the stifled and described second spring is resisted against in the control valve core, and the second spring is upwards described in often promotion
Control valve core is so that second sealing cone is often closed in the upper surface of the control valve core glissile segment；
Proportion electro-magnet, the proportion electro-magnet are located at the upper end that first mounting hole is closed on the valve body, institute
The push rod for stating proportion electro-magnet extends down into first mounting hole to offset with the upper end of the control valve core；
When the proportion electro-magnet power loss, the second spring, which pushes the control valve core and reversing valve core to move up, makes institute
It states and is lifted on push rod, the control valve core glissile segment is moved up to close second sealing cone, and the first spring pushes described put down
Weighing apparatus spool third convex shoulder moves up the connection for closing first sealing cone to separate third hydraulic fluid port and the 4th hydraulic fluid port, the commutation
Spool, which moves up, makes second hydraulic fluid port be connected with the third hydraulic fluid port, and first hydraulic fluid port and second hydraulic fluid port disconnect；
When the proportion electro-magnet obtains electric, the push rod pushes the reversing valve core and control valve core to move down simultaneously, institute
It states control valve core glissile segment and moves down opening second sealing cone, pressure difference of the balance valve core in the 4th hydraulic fluid port and the first control chamber
Under move downward and open first sealing cone and the 4th hydraulic fluid port is made to be connected by the second throttling channel with third hydraulic fluid port, it is described
After reversing valve core moves down, the connection of the partition of the second glissile segment of reversing valve core second hydraulic fluid port and third hydraulic fluid port, first oil
Mouth is connected by the first segment chute with second hydraulic fluid port.
Advantageously, have on the reversing valve core and be connected to being connected to for the third hydraulic fluid port and first glissile segment upper surface
Runner.
Advantageously, the first segment chute is multiple rectangular channels along the reversing valve core circumference uniform distribution.
Advantageously, second throttling channel is multiple rectangular channels along the second convex shoulder of balance valve core circumference uniform distribution.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of balanced valve according to an embodiment of the invention；
Fig. 2 is the valve body structure schematic diagram of balanced valve according to an embodiment of the invention；
Fig. 3 is the selector valve core structure schematic diagram of balanced valve according to an embodiment of the invention；
Fig. 4 is the balance valve core structural schematic diagram of balanced valve according to an embodiment of the invention；
Fig. 5 is the control valve core structural schematic diagram of balanced valve according to an embodiment of the invention；
Fig. 6 is the hydraulic schematic diagram of balanced valve according to an embodiment of the invention；
Fig. 7 is the hydraulic schematic diagram of an application scenarios of 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 the balanced valve with the embodiment of the present invention.
As shown in Figures 1 to 5, a kind of balanced valve according to an embodiment of the present invention, comprising: valve body 1, balance valve core 2, plug are stifled
3, control valve core 4, the first spring 5a, second spring 5b, reversing valve core 6, screw plug 7 and proportion electro-magnet 8.
Specifically, valve body 1 be equipped with the first mounting hole 107, the second mounting hole 106 with to be connected to the first mounting hole
107 and second mounting hole 106 intercommunicating pore 108, the second mounting hole 106 is diameter is sequentially reduced from the bottom to top ladder type hole,
There is arranged for interval and the first through-flow slot 101, the second through-flow slot that are connected to the first mounting hole 107 from top to bottom in valve body 1
102 and the through-flow slot 103 of third, there is the four-way chute 104 being connected to the second mounting hole 106 in valve body 1, the valve body 1
There is the first hydraulic fluid port P be connected to the first through-flow slot 101, the second hydraulic fluid port A being connected to the second through-flow slot 102 and the on side wall
The third hydraulic fluid port T that threeway chute 103 is connected to and the 4th hydraulic fluid port B being connected to four-way chute 104, valve body 1 are interior in the second installation
Hole 106 and the junction of intercommunicating pore 108 are equipped with the first sealing cone 105.
Screw plug 7 is detachably arranged in the lower end that second mounting hole 106 is closed on the second mounting hole 106.
Balance valve core 2, which can slide up and down to, the upper surface of to be located in the second mounting hole 106 and is located at screw plug 7, balance valve core 2 by
Under it is supreme include the first convex shoulder 205 being slidably matched with 106 large aperture portion of the second mounting hole, with 106 small-bore of the second mounting hole
The second convex shoulder 206 and matched with the first sealing cone 105 to control the first mounting hole 107 and the second installation that portion is slidably matched
The third convex shoulder 207 of 106 on-off of hole, the second convex shoulder 206 are equipped with the small-bore portion and the 4th to be connected to the second mounting hole 106
The second throttling channel 24 of hydraulic fluid port T, the second throttling channel 24 are multiple rectangles along 206 circumference uniform distribution of the second convex shoulder of balance valve core
Slot has balance valve core through-hole up and down on balance valve core 2, and the balance valve core through-hole includes hole balanced valve from top to bottom
Core through-hole upper section 201, balance valve core through-hole extension diameter section 202, balance valve core through-hole middle section 203 and balance valve core through hole lower section 204,
Balance valve core through-hole upper section 201 and balance 202 junction of valve core through hole extension diameter section are equipped with the second sealing cone 23, balance valve core 2
Interior the first through flow hole 22 for being equipped with connection balance valve core through-hole extension diameter section 202 and balance valve core through-hole lower section 204, the second convex shoulder
There is the damping hole 21 of connection four-way chute 104 and the first through flow hole 22, between screw plug 7 and balance valve core 2 on 206 side wall
Define the first control chamber 1a.
Plug stifled 3 is fixedly mounted in balance valve core through-hole middle section 203 to separate balance valve core through-hole middle section 203 and put down
The connection of weighing apparatus valve core through hole lower section 204.
First spring 5a is located in second mounting hole 106, and the lower end 5a of first spring is against screw plug 7 and first
The upper end of spring 5a is protruded into balance valve core through-hole lower section 204 and the leave from office terrace against balance valve core through-hole middle section 203,
First spring 5a often pushes balance valve core 2 so that the first sealing cone 105 is often closed in the upper surface of balance valve core 2 upwards.
Control valve core 4 includes that can slide up and down to the control valve core glissile segment cooperated in balance valve core through-hole middle section 203
41 and above the control valve core glissile segment 41 and upper end extends upwardly into the control valve core of balance valve core through-hole upper section 201
Undergauge section 42, the upper surface of control valve core glissile segment 41 and second sealing cone 23 are matched to control the balance valve core
The on-off of through-hole extension diameter section 202 and balance valve core through-hole upper section 201 has the control valve core that Open Side Down blind in control valve core 4
Hole 43, the upper end of control valve core blind hole 43 extend upwardly to control valve core undergauge section 42, and the control valve core undergauge section 42 has
It is connected to the periphery wall of the control valve core undergauge section 42 and the control valve core through flow hole 44 of the control valve core blind hole 43.
Reversing valve core 6, which can slide up and down to, to be located in the first mounting hole 107, and reversing valve core 6 includes first sliding from top to bottom
Dynamic section 601, the first undergauge section 602, the second glissile segment 603 and the second undergauge section 604, the second undergauge section 604 extend downwardly into balance
It offsets in valve core through hole upper section 201 with control valve core undergauge section 42, the second glissile segment 603 is equipped with to be connected to first oil
The first segment chute 61 of mouth P and the second hydraulic fluid port A.First segment chute 61 is multiple rectangular channels along 6 circumference uniform distribution of reversing valve core.It changes
Have be connected to the third hydraulic fluid port T and 601 upper surface of the first glissile segment to be connected to runner 62 on spool 6.
Second spring 5b is located in balance valve core through-hole middle section 203, and the lower end of the second spring 5b is against described
The upper end for filling in the stifled 3 and second spring 5b is resisted against in the control valve core 4, and the second spring 5b is upwards described in often promotion
Control valve core 4 is so that second sealing cone 23 is often closed in the upper surface of the control valve core glissile segment 41.
Proportion electro-magnet 8 is located at the upper end that first mounting hole 107 is closed on the valve body 1, the ratio electromagnetism
The push rod 81 of iron 8 is extended down into first mounting hole 107 and is offseted with the upper end of the control valve core 6；
When 8 power loss of proportion electro-magnet, second spring 5b push control valve core 4 and reversing valve core 6 move up make it is described
It is lifted on push rod 81, control valve core glissile segment 41 is moved up to close second sealing cone 23, and the first spring 5a pushes balance
The third convex shoulder 207 of spool 2 moves up the company for closing first sealing cone 105 to separate third hydraulic fluid port T and the 4th hydraulic fluid port B
Logical, reversing valve core 6, which moves up, is connected to the second hydraulic fluid port A with third hydraulic fluid port T-phase, and the first hydraulic fluid port P and the second hydraulic fluid port A are disconnected.
When the proportion electro-magnet 8 must be electric, the push rod 81 pushes reversing valve core 6 and control valve core 4 to move down simultaneously, institute
It states control valve core glissile segment 41 and moves down opening second sealing cone 23, balance valve core 2 is in the 4th hydraulic fluid port B and the first control chamber
It is moved downward under the pressure difference of 1a and opens first sealing cone 105 and the 4th hydraulic fluid port B is made to pass through the second throttling channel 24 and third
The connection of hydraulic fluid port T-phase, after reversing valve core 6 moves down, the second glissile segment of reversing valve core 603 separates the company of the second hydraulic fluid port A and third hydraulic fluid port T
Logical, the first hydraulic fluid port P is connected by the first segment chute 61 with the second hydraulic fluid port A.
It following is a brief introduction of the working principle of balanced valve according to an embodiment of the present invention.
As shown in Figure 1, when proportion electro-magnet 8 is not charged, under the active force of second spring 5b, control valve core glissile segment
41 move up to close second sealing cone 23, and under the collective effect of the first spring 5a and the 4th hydraulic fluid port B pressure, third is convex
Shoulder 207 blocks first conical surface 105, and (pressure oil is successively through the 4th hydraulic fluid port B, damping hole 21, the first through flow hole 22 and the first control
Chamber 1a processed is acted on the circumferential area of the first convex shoulder 205, is moved up third convex shoulder 207 and is blocked first conical surface 105), first
Control chamber 1a and third hydraulic fluid port T is disconnected, and the 4th hydraulic fluid port B and third hydraulic fluid port T cut-off are obstructed；Second hydraulic fluid port A and third hydraulic fluid port T simultaneously
It is connected, the first hydraulic fluid port P and the second hydraulic fluid port A are disconnected.Wherein the upper and lower end face of reversing valve core 6 passes through connection runner 62 and third oil
Mouth T-phase connection, makes the stress of 6 upper and lower end face of reversing valve core reach balance drawn stem 81 and the active force of second spring 5b.
When proportion electro-magnet 8 must be electric, push rod 81 pushes reversing valve core 6 and control valve core 4 to move down simultaneously, the control valve
Core glissile segment 41, which moves down, opens second sealing cone 23, and it is through-flow that oil liquid by the 4th hydraulic fluid port B successively passes through damping hole 21, first
Third hydraulic fluid port T is flowed into after hole 22, balance valve core through-hole extension diameter section 202, balance valve core through-hole upper section 201, because damping hole 21
Effect, produces pressure difference, balance valve core 2 is in the 4th hydraulic fluid port B and the first control chamber 1a between the 4th hydraulic fluid port B and the first control chamber 1a
Pressure difference under (wherein the pressure of the 4th hydraulic fluid port B act on the annulus area of the first convex shoulder 205 and the second convex shoulder 206 generate to
Under thrust, the pressure of the first control chamber 1a acts on the circumferential area of the first convex shoulder 205 and generates upward thrust) fortune downwards
It is dynamic to open first sealing cone 105, it is connected to third hydraulic fluid port T with the third hydraulic fluid port T-phase by the second throttling channel 24, changes
After moving down to spool 6, the second glissile segment of reversing valve core 603 separates the connection of the second hydraulic fluid port A and third hydraulic fluid port T, and the first hydraulic fluid port P is logical
The first segment chute 61 is crossed to be connected with the second hydraulic fluid port A.Make control valve core glissile segment after reversing valve core 2 moves down
Opening between 41 upper surface and the second sealing cone 23 reduces, and the pressure difference between the 4th hydraulic fluid port B and the first control chamber 1a subtracts
Small, 2 stress of balance valve core reaches balance.
Continue the voltage on scaling up electromagnet 8, reversing valve core 6 and control valve core 4 continue to move downward, in the 4th oil
Under mouthful P and the first control chamber 1a differential pressure action, balance valve core 2 continues to move downward, first segment chute 61, the second throttling channel 24
Aperture increases, and the second hydraulic fluid port A and third hydraulic fluid port T disconnects obstructed；After balance valve core 2 moves downward again and reduce the 4th hydraulic fluid port
Pressure difference between B and the first control chamber 1a, balance valve core 2 have reached new equalization point again.
In short, the voltage of given proportion electro-magnet 8 is bigger, the aperture between the first hydraulic fluid port P and the second hydraulic fluid port A is bigger, together
When the 4th hydraulic fluid port B and third hydraulic fluid port T between aperture it is also bigger.
As shown in fig. 7, being the hydraulic schematic diagram of an application scenarios of balanced valve according to an embodiment of the invention.Its
In use two balanced valves according to an embodiment of the present invention, i.e. the first balanced valve 11a and the second balanced valve 11b.First balance
The first hydraulic fluid port P of valve 11a and the second balanced valve 11b is connected with the outlet of hydraulic pump 10, and the first balanced valve 11a and second is flat
The third hydraulic fluid port T of weighing apparatus valve 11b is connected with fuel tank.The 4th hydraulic fluid port B of first balanced valve 11a is connected with the rod chamber of hydraulic cylinder 9,
The second hydraulic fluid port A of first balanced valve 11a is connected after passing through check valve 12a with the rodless cavity of hydraulic cylinder 9, the second balanced valve 11b's
4th hydraulic fluid port B is connected with the rodless cavity of hydraulic cylinder 9, the second hydraulic fluid port A of the second balanced valve 11b by after check valve 12b with it is hydraulic
The rod chamber of cylinder 9 is connected.When needing to control hydraulic cylinder 9 and stretching out, charge the proportion electro-magnet 8 of the first balanced valve 11a, give the
The voltage of one balanced valve 11a is bigger, and the stretching speed of hydraulic cylinder 9 is faster.When needing to control hydraulic cylinder 9 and retracting, make second flat
The proportion electro-magnet 5 of weighing apparatus valve 11b charges, and the voltage for giving the second balanced valve 11b is bigger, and the retraction speed of hydraulic cylinder 9 is faster.When
When needing to control 9 locking of hydraulic cylinder, make the first balanced valve 11a and the second equal power loss of balanced valve 11b, the rodless cavity of hydraulic cylinder 9 exists
In cut-off No leakage state under the linear sealing of the 4th hydraulic fluid port B of check valve 12a and the second balanced valve 11b, hydraulic cylinder 9 has bar
Chamber is under the linear sealing of the 4th hydraulic fluid port B of check valve 12b and the first balanced valve 11a in cut-off No leakage state.
The beneficial effect of balanced valve according to an embodiment of the present invention is:
1, the displacement that reversing valve core and control valve core can be controlled simultaneously by proportion electro-magnet, by the displacement of control valve core
Make to generate pressure difference between the 4th hydraulic fluid port B and the first control chamber, this pressure difference pushes balance valve core to open, and only needs the electromagnetism of very little ferreous
The unlatching and commutation of balanced valve can be controlled, electromagnet is low in energy consumption, unlike consuming very big energy in the prior art, has section
The effect of energy.
2, using Hydraulic Balancing Circuit of the invention, without as configuring hydraulic control proportional multi-way valve and guide's hand in the prior art
Handle simplifies hydraulic circuit, reduces overall cost.
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. a kind of balanced valve characterized by comprising
Valve body, the valve body are equipped with the first mounting hole, the second mounting hole and to be connected to the first mounting hole and the second mounting hole
Intercommunicating pore, second mounting hole is diameter is sequentially reduced from the bottom to top ladder type hole, have in the valve body from upper and
Lower arranged for interval and the first through-flow slot being connected to first mounting hole, the second through-flow slot and the through-flow slot of third, the valve
There is the four-way chute being connected to second mounting hole in vivo, have on the side wall of the valve body and be connected to the first through-flow slot
The first hydraulic fluid port, the second hydraulic fluid port being connected to the second through-flow slot, the third hydraulic fluid port that is connected to the through-flow slot of third and with it is the 4th through-flow
4th hydraulic fluid port of slot connection, the valve body is interior to be equipped with the first sealing cone in the junction of the second mounting hole and intercommunicating pore；
Screw plug, the screw plug are detachably arranged in the lower end that second mounting hole is closed on second mounting hole；
Balance valve core, the balance valve core, which can slide up and down to, to be located in second mounting hole and is located at the upper of the screw plug
Face, the balance valve core include the first convex shoulder being slidably matched with the second mounting hole large aperture portion and the second installation from the bottom to top
The second convex shoulder and matched with the first sealing cone to control the first mounting hole and the second installation that hole small-bore portion is slidably matched
The third convex shoulder of hole on-off, second convex shoulder are equipped with the small-bore portion and the described 4th to be connected to second mounting hole
Second throttling channel of hydraulic fluid port, has balance valve core through-hole up and down on the balance valve core, the balance valve core through-hole from
It is upper and lower logical including hole balance valve core through-hole upper section, balance valve core through-hole extension diameter section, balance valve core through-hole middle section and balance valve core
Hole lower section, the balance valve core through-hole upper section and the balance valve core through-hole extension diameter section junction are equipped with the second sealing cone, institute
The first through flow hole for being equipped in balance valve core and being connected to the balance valve core through-hole extension diameter section and the balance valve core through-hole lower section is stated,
There is the damping hole for being connected to the four-way chute and the first through flow hole on the side wall of second convex shoulder, the screw plug with it is described
The first control chamber is defined between balance valve core；
Plug is stifled, and the plug is stifled to be fixedly mounted in balance valve core through-hole middle section to separate balance valve core through-hole middle section and balance
The connection of valve core through hole lower section；
First spring, first spring are located in second mounting hole, and the lower end of first spring is against the screw plug
And the upper end of first spring is protruded into the balance valve core through-hole lower section and under balance valve core through-hole middle section
Step surface, first spring often pushes the balance valve core upwards so that the upper surface of the balance valve core often closes described
One sealing cone；
Control valve core, the control valve core include the control valve that can slide up and down to Pei He in balance valve core through-hole middle section
Core glissile segment and above the control valve core glissile segment and upper end extends upwardly into the control of the balance valve core through-hole upper section
Spool undergauge section processed, the upper surface of the control valve core glissile segment and second sealing cone are matched to control the balance
The on-off of valve core through hole extension diameter section and balance valve core through-hole upper section has the control valve core that Open Side Down blind in the control valve core
Hole, the upper end of the control valve core blind hole extend upwardly to the control valve core undergauge section, and the control valve core undergauge section has
It is connected to the periphery wall of the control valve core undergauge section and the control valve core through flow hole of the control valve core blind hole；
Reversing valve core, the reversing valve core, which can slide up and down to, to be located in first mounting hole, the reversing valve core from upper and
It down include the first glissile segment, the first undergauge section, the second glissile segment and the second undergauge section, the second undergauge section extends downwardly into described
It offsets in balance valve core through-hole upper section with control valve core undergauge section, second glissile segment is equipped with to be connected to first oil
The first segment chute of mouth and the second hydraulic fluid port；
Second spring, the second spring are located in balance valve core through-hole middle section, and the lower end of the second spring is against institute
State that plug is stifled and the upper end of the second spring is resisted against in the control valve core, the second spring often pushes the control upwards
Spool is so that second sealing cone is often closed in the upper surface of the control valve core glissile segment；
Proportion electro-magnet, the proportion electro-magnet are located at the upper end that first mounting hole is closed on the valve body, the ratio
The push rod of example electromagnet extends down into first mounting hole to offset with the upper end of the control valve core；
When the proportion electro-magnet power loss, the second spring, which pushes the control valve core and reversing valve core to move up, makes described push away
It is lifted on bar, the control valve core glissile segment is moved up to close second sealing cone, and the first spring pushes the balanced valve
Core third convex shoulder moves up the connection for closing first sealing cone to separate third hydraulic fluid port and the 4th hydraulic fluid port, the reversing valve core
Moving up makes second hydraulic fluid port be connected with the third hydraulic fluid port, and first hydraulic fluid port and second hydraulic fluid port disconnect；
When the proportion electro-magnet obtains electric, the push rod pushes the reversing valve core and control valve core to move down simultaneously, the control
Spool glissile segment processed, which moves down, opens second sealing cone, balance valve core under the 4th hydraulic fluid port and the pressure difference of the first control chamber to
Lower movement opens first sealing cone and the 4th hydraulic fluid port is made to be connected by the second throttling channel with third hydraulic fluid port, the commutation
After spool moves down, the connection of the partition of the second glissile segment of reversing valve core second hydraulic fluid port and third hydraulic fluid port, first hydraulic fluid port leads to
The first segment chute is crossed to be connected with second hydraulic fluid port.
2. balanced valve according to claim 1, which is characterized in that have on the reversing valve core and be connected to the third hydraulic fluid port
Runner is connected to first glissile segment upper surface.
3. balanced valve according to claim 1, which is characterized in that the first segment chute is multiple along the reversing valve core
The rectangular channel of circumference uniform distribution.
4. balanced valve according to claim 1, which is characterized in that second throttling channel is multiple along the balance valve core
The rectangular channel of second convex shoulder circumference uniform distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811403228.XA CN109538563B (en) | 2018-11-23 | 2018-11-23 | Balance valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811403228.XA CN109538563B (en) | 2018-11-23 | 2018-11-23 | Balance valve |
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| Publication Number | Publication Date |
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| CN109538563A true CN109538563A (en) | 2019-03-29 |
| CN109538563B CN109538563B (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811403228.XA Active CN109538563B (en) | 2018-11-23 | 2018-11-23 | Balance valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692388A (en) * | 2020-06-16 | 2020-09-22 | 邵玉强 | Electromagnetic valve and working method thereof |
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| CN108825577A (en) * | 2018-09-21 | 2018-11-16 | 东莞海特帕沃液压科技有限公司 | A kind of balanced valve of variable hydraulic control ratio |
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| CN108843644A (en) * | 2018-07-20 | 2018-11-20 | 佛山信卓派思机械科技有限公司 | A kind of balanced valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4815292A (en) * | 1987-06-29 | 1989-03-28 | Allied-Signal Inc. | Multi-part primary pressure-balanced proportioning valve with brake pressure failure switch |
| CN101235840A (en) * | 2008-03-11 | 2008-08-06 | 浙江大学 | Oil tank liquid level automatic control mechanical proportional balancing valve |
| CN105135019A (en) * | 2015-10-13 | 2015-12-09 | 徐州重型机械有限公司 | Balance valve and engineering machine |
| JP2017214998A (en) * | 2016-06-01 | 2017-12-07 | 株式会社不二越 | Solenoid switching type counter balance valve |
| CN108426070A (en) * | 2018-02-28 | 2018-08-21 | 北京控制工程研究所 | A kind of isolated solenoid-operated proportional balanced valve suitable under more pressure working conditions |
| CN108223493A (en) * | 2018-03-01 | 2018-06-29 | 徐州重型机械有限公司 | A kind of variable balanced valve of pilot ratio |
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| CN111692388A (en) * | 2020-06-16 | 2020-09-22 | 邵玉强 | Electromagnetic valve and working method thereof |
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|---|---|
| CN109538563B (en) | 2020-08-04 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20200707 Address after: 324400 Dongju Road, Longyou Industrial Park, Longyou County, Quzhou City, Zhejiang Province Applicant after: KAISITONG VALVE Co.,Ltd. Address before: 315040 Room 408-1, 265, 75 blocks, Huangguxincun, Baihe Street, Yinzhou District, Ningbo City, Zhejiang Province Applicant before: Li Jun |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A balancing valve Granted publication date: 20200804 Pledgee: China Construction Bank Corporation Longyou Branch Pledgor: KAISITONG VALVE CO.,LTD. Registration number: Y2024980022293 |