CN106051185A - Balance valve internally provided with buffering valve - Google Patents
Balance valve internally provided with buffering valve Download PDFInfo
- Publication number
- CN106051185A CN106051185A CN201610663569.5A CN201610663569A CN106051185A CN 106051185 A CN106051185 A CN 106051185A CN 201610663569 A CN201610663569 A CN 201610663569A CN 106051185 A CN106051185 A CN 106051185A
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- Prior art keywords
- valve
- main valve
- groove
- chamber
- plug
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/52—Means for additional adjustment of the rate of flow
Abstract
The invention discloses a balance valve internally provided with a buffering valve. The balance valve comprises a main valve body, a main valve element, a first valve seat, a second valve seat, a first elastic piece, a second elastic piece and a plug-in mounted valve body. The first valve seat is fixedly arranged in the main valve body. The main valve element is in sliding fit with the first valve seat and the main valve body, and an inner cavity of the main valve body is divided into a first cavity, a second cavity and a control cavity. The second valve seat and the second elastic piece are arranged in the second cavity. When oil enters an oil opening V, oil liquid pushes the second valve seat open and flows towards an oil opening C through a first through hole. The first elastic piece is installed in the plug-in mounted valve body which is fixedly connected with the main valve body. The first elastic piece is used for connecting a steel ball into a runner opening of a first runner hole in the main valve element in a pressing manner through a spring seat. When the oil enters an oil opening X and pushes the main valve element to move in the first spring piece compression direction, the oil liquid of the oil opening C can flow towards the oil opening V through multiple grooves of the main valve element. The balance valve internally provided with the buffering valve is easy to machine and capable of well controlling the impact pressure.
Description
Technical field
The present invention relates to control valve technical field, particularly relate to one and can accurately control to load lowering velocity and can be very
Control well the balanced valve of a kind of built-in trimmer valve of surge.
Background technology
In the plant equipment such as the engineering machinery in modern times, building machinery, widely apply the hydraulic circuit that hoists, wherein balanced valve
Being to control the crucial Hydraulic Elements of fluid cylinder working in hoisting circuit, the quality of balanced valve performance directly affects the property of main frame
Energy.Generally there is such a shortcoming in existing hydraulically balanced valve: when load is transferred, due to hydraulically balanced valve valve port flow-passing surface
The long-pending feature that can produce sudden change, can make load produce the phenomenon of low-frequency jitter and impact, causes system unstable, affects complete machine
Security reliability；And during cylinder efficient, owing to balanced valve can not impact the pressure peak produced by buffer load timely,
Also hydraulic means is caused harm greatly.
Patent publication No. is CN103470815B, the patent of invention of entitled " balanced valve " provides a kind of flow-passing surface gradually
The balanced valve become, its groove differed by milling out multiple width on poppet valve core, aperture and inclined hole combine, and reach flow gradual change
Purpose.But this design there is also following shortcoming:
(1) what load was passed through when transferring and load rising is same valve port, all can produce restriction effect, and load in reality
Need not throttling action during rising, have a strong impact on the efficiency of operation；A check valve in parallel, nothing is also needed in order to solve this problem
Shape adds expense.
(2) load pressure acts in difference in areas S, promotes spool to move integrally and overcomes spring force, is opened by valve port and play
Relief valve effect.In actual application many due to spool matable assembly, and afterbody is equipped with sealing ring, and overall friction is big, spool
Open and have certain delay, thus cause in system actual pressure peak and be greater than the pressure that sets of spring.Such as,
The maximum pressure that spring sets is 20MPa, postpones because spool is opened in actual application, and surge pressure can reach 35-
40MPa, the so safety to hydraulic means create certain harm.
(3) pass through when load rising, decline, safety overflow is all same valve port, namely forms the spool of this valve port
Rise each time with valve seat, decline, safety overflow time will either on or off once, spool or valve seat so can be caused to use
Frequency is too high, thus has shortened service life.
Summary of the invention
It is an object of the invention to overcome the defect of prior art, it is provided that the balanced valve of a kind of built-in trimmer valve, should
Balanced valve processing is simple, area of passage is without sudden change, accurately control load lowering velocity and can control surge very well.
For above technical problem, the technical solution of the present invention is to provide the balance of a kind of built-in trimmer valve
Valve, including main valve body, main valve plug, the first valve seat, the second valve seat, the first elastic component, the second elastic component and plug-in mounting valve body, described
One valve seat is fixing to be located in described main valve body, and one end of described main valve plug is actively socketed in described first valve seat, described main valve
The other end of core is slidably matched with the inner chamber of described main valve body, and the inner chamber of main valve body is divided into and V by described main valve plug, the first valve seat
Second chamber that connects with C hydraulic fluid port of first chamber of hydraulic fluid port connection and the control chamber connected with X hydraulic fluid port；Described second valve seat with
Second elastic component is each provided in described second chamber, and the second valve seat is pressed against and blocks axially on the first valve seat by the second elastic component
The first through hole being located on the first valve seat, during V hydraulic fluid port oil-feed, fluid pushes described second valve seat open, flows to C through described first through hole
Hydraulic fluid port；Described first elastic component is arranged in described inserted valve body, described plug-in mounting valve body and the second chamber institute of described main valve body
In the fixing connection of end, described main valve plug one end is provided with the first flow hole communicated with the first chamber, is provided with in the middle part of described main valve plug
Connecting the second runner hole in the second chamber and described first flow hole, steel ball is crimped onto by described first elastic component by spring base
The runner mouth in the first flow hole in described main valve plug, cuts off the first chamber and first flow hole, when steel ball is to compressing the first bullet
When property part direction is moved, the fluid of the second chamber can flow into the first chamber through described first, second runner hole；Described main valve plug
Being additionally provided with multiple groove on periphery vertically, multiple grooves are arranged to: when X hydraulic fluid port oil-feed promotes main valve plug to compressing the first bullet
When the direction of property part is moved, the fluid of C hydraulic fluid port can flow to V hydraulic fluid port by the plurality of groove.
Further, the plurality of groove is U-shaped, and including the first groove and the second groove, and the degree of depth of the first groove is big
The degree of depth in the second groove.
Preferably, the distance between described first groove and described steel ball is than the distance between the second groove and described steel ball
Greatly, the width of described first groove is more than the width of described second groove.
Preferably, described first groove all includes multiple with described second groove, and multiple first groove and/or second recessed
The groove axis all around main valve plug side face, along described main valve plug is sequentially arranged.
Further, described second chamber is provided with groove, the one of described second elastic component near the side in described control chamber
End is connected in described groove, and described second elastic component is actively socketed on described main valve plug and the other end is connected to described second
On valve seat.
Preferably, the internal diameter of described second elastic component is more than the diameter of described main valve plug corresponding position, described second valve seat
It is actively socketed on described main valve plug and the diameter of described second valve seat is less than the diameter of described second chamber.
Further, described main valve plug is provided with convex shoulder near one end of steel ball, and when V hydraulic fluid port oil-feed, described first is elastic
The convex shoulder of described main valve plug is crimped on described first valve seat by part, described first chamber and the first flow hole of described main valve plug
Between cut off by described steel ball.
Beneficial effects of the present invention is as follows:
The present invention completes one-way function and a master for throttling by arranging second valve seat in a valve body
Spool, and by the way of offering multiple groove on main valve plug, the movement of control bound core just can relatively accurately control
Flow area so that do not limited by throttling when hydraulic cylinder rises, is controlled by than shallower throttling when hydraulic cylinder declines.This
Outward, surge can also be fallen by fast cache by steel ball, impact can be controlled very well.During by different operating mode, it is achieved the second valve
Seat, main valve plug and the asynchronous unlatching of steel ball, decrease the damage of parts, can extend the overall service life of the present invention.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in embodiment being described below required for make
Accompanying drawing briefly introduce.It should be evident that drawings discussed below is only some embodiments of the present invention, for ability
From the point of view of the those of ordinary skill in territory, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.
It it is the structural representation of a kind of embodiment of the balanced valve of a kind of built-in trimmer valve of the present invention shown in Fig. 1；
It it is a kind of structural representation of main valve plug in Fig. 1 shown in Fig. 2；
It it is the principle schematic of the balanced valve of a kind of built-in trimmer valve of the present invention shown in Fig. 3；
It it is the principle schematic of the hydraulic circuit of the balanced valve of a kind of built-in trimmer valve using the present invention shown in Fig. 4.
In figure: 1, the first elastic component, 2, plug-in mounting valve body, 3, spring base, the 4, first valve seat, the 5, second valve seat, 6, main valve plug,
61, the second groove, the 62, first groove, 63, first flow hole, the 64, second runner hole, the 7, second elastic component, 8, main valve body, 9,
Steel ball, the 10, second chamber, the 11, first chamber, the 12, first through hole, 13, control chamber.
Detailed description of the invention
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Exemplary embodiment be described in further detail.Obviously, described embodiment is only the part enforcement of the present invention
Example rather than all embodiments exhaustive.Based on the embodiment in the present invention, those of ordinary skill in the art are not making wound
The all other embodiments obtained under the property made work premise, fall within the scope of protection of the invention.
As it is shown in figure 1, give a kind of specific embodiment of the balanced valve of a kind of built-in trimmer valve of the present invention.Real at this
Executing in example, the balanced valve of a kind of built-in trimmer valve of the present invention mainly includes main valve body 8, main valve plug the 6, first valve seat the 4, second valve
Seat the 5, first elastic component the 1, second elastic component 7 and plug-in mounting valve body 2.First valve seat 4 is fixing to be located in main valve body 8, the one of main valve plug 6
End is actively socketed in the first valve seat 4, and the other end (i.e. downside small end in Fig. 1) of main valve plug 6 slides with the inner chamber of main valve body 8
Coordinate.The inner chamber of main valve body 8 is divided into three parts by main valve plug 6 and the first valve seat 4 jointly: first chamber the 11, second chamber 10 is controlled
Chamber 13 processed.Wherein, the first chamber 11 connects with V hydraulic fluid port, and the second chamber 10 connects with C hydraulic fluid port, controls chamber 13 and connects with X hydraulic fluid port.
It addition, the second valve seat 5 and the second elastic component 7 are each provided in the second chamber 10.First valve seat 4 is provided with axial
One through hole 12, when V hydraulic fluid port oil-feed, the oil liquid pressure entering the first through hole 12 can push the second valve seat 5 open, so that V hydraulic fluid port
Fluid enter C hydraulic fluid port through the first through hole 12.When V hydraulic fluid port not oil-feed, under the effect of the second elastic component 7, the second valve seat 5 is pressed
Come to, on the first valve seat 4, block the first through hole 12, cut off the first chamber 11 and the second chamber 10.
Additionally, the first elastic component 1 is arranged in plug-in mounting valve body 2.Plug-in mounting valve body 2 and the second chamber place end of main valve body 8
Fixing connection.Main valve plug 6 one end is provided with the first flow hole 63 communicated with the first chamber 11, is communicated with in the middle part of main valve plug 6
Two chambers 10 and the second runner hole 64 in first flow hole 63, steel ball 9 is crimped onto main valve by spring base 3 by the first elastic component 1
The runner mouth in the first flow hole 63 in core 6, cuts off the first chamber 11 and first flow hole 63, when steel ball 9 is to compressing the first bullet
When property part direction is moved, the fluid of the second chamber 10 can flow into the first chamber 11 through first, second runner hole；Main valve plug 6
Being additionally provided with multiple groove on periphery vertically, multiple grooves are arranged to: when X hydraulic fluid port oil-feed promotes main valve plug to compressing the first bullet
When the direction of property part 1 is moved, the fluid of C hydraulic fluid port can flow to V hydraulic fluid port by the plurality of groove.
A kind of concrete structure of main valve plug 6 as shown in Figure 2.In fig. 2, multiple grooves are U-shaped, including the first groove 62
With the second groove 61, and the degree of depth of the first groove 62 is more than the degree of depth of the second groove 61.Arrange multiple groove to have an advantage that, when
The pressure of X hydraulic fluid port increases, and when the main valve plug 6 distance to the direction compressing the first elastic component 1 increases, increasing groove reveals
Go out, flow to V hydraulic fluid port flow stream velocity by groove and increase gently.
In a preferred embodiment, the distance between the first groove 62 and steel ball 9 than the second groove 61 and steel ball 9 it
Between distance big.The width of the first groove 62 is more than the width of the second groove 61.This structure is advantageous in that, when X hydraulic fluid port
Pressure increased more, and the displacement that main valve plug 6 compresses the first elastic component 1 is the longest, flows to V hydraulic fluid port flow by groove the biggest, from
And beneficially accurate flow control.
In a preferred embodiment, the first groove 62 all includes multiple with the second groove 61, and multiple first groove
62 and/or second groove 61 all sequentially arrange around main valve plug 6 side face, axis along main valve plug 6.Leaning on of multiple second groove 61
The start line of nearly first chamber, is equally spaced along the axis of main valve plug 6 from the top down around main valve plug 6.In like manner, it is possible to understand that
It is that the start line of multiple first grooves 62 is not the most on the same tangent plane of main valve plug 6, and cincture main valve plug 6 is along main valve plug 6
Axis be equally spaced from the top down.
In one embodiment, as it is shown in figure 1, the second chamber 10 is provided with groove near the side controlling chamber 13, the second bullet
One end of property part 7 is connected in groove, and the second elastic component 7 is actively socketed on main valve plug 6 and the other end is connected to the second valve seat 5
On.
In a preferred embodiment, the internal diameter of the second elastic component 7 more than the diameter of main valve plug 6 corresponding position, i.e. the
Almost without active force between two elastic components 7 and main valve plug 6, the second elastic component 7 only has active force to the second valve seat 5.It addition, the
Two valve seats 5 are actively socketed on main valve plug 6 and the diameter of the second valve seat 5 is less than the diameter of the second chamber 10, the i.e. second valve seat 5 with
Substantially active force, the active force of the second valve seat 5 is not had to be only dependent upon the second elastic component 7 and first between the inwall of the second chamber 10
Oil liquid pressure in through hole 12.
In one embodiment, main valve plug 6 is provided with convex shoulder near one end of steel ball 9, and when V hydraulic fluid port oil-feed, first is elastic
The convex shoulder of main valve plug 6 is crimped on the first valve seat 4 by part 1, owing to the multiple through holes on main valve plug 6 are all blocked by the first valve seat 4,
Thus the passage between the first chamber 11 and the first flow hole 63 of main valve plug 6 is cut off by steel ball 9.
The principle schematic of the balanced valve of a kind of built-in trimmer valve of the present invention is shown such as Fig. 3.According to Fig. 3, work as V
During hydraulic fluid port oil-feed, the one-way valve structures that can be formed by opening the second valve seat 5 flows to C hydraulic fluid port.When X hydraulic fluid port oil-feed, C hydraulic fluid port
Fluid can gently flow to V hydraulic fluid port by adjustable throttle-valve structure on right side and lay down.When External Force Acting produces load shock
During power, the overflow valve as shown in left side can be formed quickly pressure is laid down by the unlatching of steel ball 9.
As Fig. 4 shows the knot of the hydraulic circuit of the balanced valve of a kind of built-in trimmer valve using the present invention shown in Fig. 3
Structure schematic diagram.Wherein, C hydraulic fluid port connects the rodless cavity of hydraulic cylinder, and V hydraulic fluid port connects reversal valve.According to Fig. 4, the work of this hydraulic return
Making to be divided into rising, stop, declining these three process, specific works principle is as follows:
(1) uphill process.The pressure oil of reversal valve arrives the V hydraulic fluid port of balanced valve, and the pressure oil of V hydraulic fluid port promotes the second valve seat
5 open, and fluid flows into C hydraulic fluid port through V hydraulic fluid port and arrives hydraulic cylinder rodless cavity, promote hydraulic cylinder up.This stage fluid is by V hydraulic fluid port stream
Enter C hydraulic fluid port without throttling action.
(2) process is declined.The pressure oil of X hydraulic fluid port is applied on main valve plug 6, overcomes the pretightning force of the first elastic component 1, makes main
Move on spool 6, first open the conical surface seal face between main valve plug 6 and the first valve seat 4.When X hydraulic fluid port pressure increases, and main valve plug 6 is just
Move up further, each groove (i.e. the first groove 62 in Fig. 2 covered in by the diameter of the first valve seat 4 before progressively exposing
With the second groove 61), such area of passage relaxes to be increased, and load lowering velocity can be precisely controlled.And owing to crossing stream
The gradual change of area is progressively linked up by boring and is realized, and processing cost is low.
(3) stopped process.X hydraulic fluid port pressure reduces, and the first elastic component 1 promotes main valve plug 6 to move to left, and area of passage gradually contracts
Little, until main valve plug 6 is fitted on the first valve seat 4 completely, valve port is shut completely.
(4) buffering course.When in oil cylinder quiescing process, owing to external force or other reason cause C mouth pressure to steeply rise, C
The hydraulic oil of mouth flows into first flow hole 63 by the second runner hole 64, is applied on steel ball 9, overcomes the pre-of the first elastic component 1
Clamp force, flows into V mouth, turns off after pressure peak being buffered at once.Owing to steel ball 9 is without other matable assembly, therefore open rapid nothing
Postpone, safeguard protection effect can well be played.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and amendment to these embodiments.So, claims are intended to be construed to include excellent
Select embodiment and fall into all changes and the amendment of the scope of the invention.As long as it will additionally be appreciated that not existing in structure
Conflict, the feature in each embodiment all can be combined with each other, and the combination type feature formed still falls within the scope of the present invention
In.The invention is not limited in specific embodiment disclosed herein, but include all skills fallen within the scope of the appended claims
Art scheme.
Claims (7)
1. the balanced valve of a built-in trimmer valve, it is characterised in that include main valve body, main valve plug, the first valve seat, the second valve seat,
First elastic component, the second elastic component and plug-in mounting valve body, described first valve seat is fixing to be located in described main valve body, described main valve plug
One end is actively socketed in described first valve seat, and the other end of described main valve plug is slidably matched with the inner chamber of described main valve body, institute
State the second chamber that the inner chamber of main valve body is divided into the first chamber connected with V hydraulic fluid port to connect by main valve plug, the first valve seat with C hydraulic fluid port
Room and the control chamber connected with X hydraulic fluid port；Described second valve seat and the second elastic component are each provided in described second chamber, and the second bullet
Property part the second valve seat is pressed against the first through hole that on the first valve seat, closure is axially disposed on the first valve seat, during V hydraulic fluid port oil-feed oil
Liquid pushes described second valve seat open, flows to C hydraulic fluid port through described first through hole；Described first elastic component is arranged on described plug-in mounting valve body
In, described plug-in mounting valve body is fixing with the second chamber place end of described main valve body to be connected；Described main valve plug one end is provided with and first
The first flow hole that chamber communicates, is communicated with the second chamber and second runner in described first flow hole in the middle part of described main valve plug
Hole, the runner mouth in the first flow hole that steel ball is crimped onto in described main valve plug by described first elastic component by spring base, cuts off
First chamber and first flow hole, when steel ball to compress the first elastic component direction move time, the fluid of the second chamber can be through institute
State first, second runner hole and flow into the first chamber；Multiple groove, multiple grooves it are additionally provided with vertically on described main valve plug periphery
It is arranged to: when X hydraulic fluid port oil-feed promotes main valve plug to move to the direction compressing the first elastic component, the fluid of C hydraulic fluid port can pass through institute
State multiple groove and flow to V hydraulic fluid port.
The balanced valve of a kind of built-in trimmer valve the most as claimed in claim 1, it is characterised in that the plurality of groove is U-shaped, bag
Include the first groove and the second groove, and the degree of depth of the first groove is more than the degree of depth of the second groove.
The balanced valve of a kind of built-in trimmer valve the most as claimed in claim 2, it is characterised in that described first groove and described steel
Distance between ball is bigger than the distance between the second groove and described steel ball, and the width of described first groove is second recessed more than described
The width of groove.
The balanced valve of a kind of built-in trimmer valve the most as claimed in claim 3, it is characterised in that described first groove and described the
Two grooves all include multiple, and multiple first groove and/or the second groove all around main valve plug side face, along the axle of described main valve plug
Line is sequentially arranged.
The balanced valve of a kind of built-in trimmer valve the most as claimed in claim 1, it is characterised in that described second chamber is near described
The side controlling chamber is provided with groove, and one end of described second elastic component is connected in described groove, and described second elastic component is movable
It is socketed on described main valve plug and the other end is connected on described second valve seat.
The balanced valve of a kind of built-in trimmer valve the most as claimed in claim 5, it is characterised in that the internal diameter of described second elastic component
More than the diameter of described main valve plug corresponding position, described second valve seat is actively socketed on described main valve plug and described second valve seat
Diameter less than the diameter of described second chamber.
7. the balanced valve of a kind of built-in trimmer valve as according to any one of claim 1 to 6, it is characterised in that described main valve
Core is provided with convex shoulder near one end of steel ball, and when V hydraulic fluid port oil-feed, the convex shoulder of described main valve plug is crimped on by described first elastic component
On described first valve seat, cut off by described steel ball between described first chamber and the first flow hole of described main valve plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610663569.5A CN106051185B (en) | 2016-08-13 | 2016-08-13 | A kind of balanced valve built in pooling feature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610663569.5A CN106051185B (en) | 2016-08-13 | 2016-08-13 | A kind of balanced valve built in pooling feature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106051185A true CN106051185A (en) | 2016-10-26 |
| CN106051185B CN106051185B (en) | 2018-09-28 |
Family
ID=57480859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610663569.5A Active CN106051185B (en) | 2016-08-13 | 2016-08-13 | A kind of balanced valve built in pooling feature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106051185B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150684A (en) * | 2017-12-25 | 2018-06-12 | 宁波文泽机电技术开发有限公司 | A kind of two-way pressure reducing valve |
| CN108167491A (en) * | 2017-12-25 | 2018-06-15 | 宁波文泽机电技术开发有限公司 | A kind of No leakage three-way pressure reducing valve |
| CN109099023A (en) * | 2018-09-29 | 2018-12-28 | 邵延荣 | Balanced valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8503160U1 (en) * | 1985-02-06 | 1985-10-10 | GAT Grubenausbau GmbH, 5840 Schwerte | Pressure relief valve with an O-ring with a small cord thickness |
| DE3510462A1 (en) * | 1985-03-22 | 1986-10-02 | Jörn 4320 Hattingen Dams | Pressure relief valve with a sealed spring space |
| DE4129799A1 (en) * | 1991-09-09 | 1993-03-11 | Quante Heinrich Berg Ing | Pressure limiting valve for hydraulic jacks in mine - has simple set and release mechanism and non-return valve all integral with jack |
| US20030010384A1 (en) * | 2000-02-04 | 2003-01-16 | Mogens Poulsen | Excess pressure release for gas |
| CN1673592A (en) * | 2004-02-05 | 2005-09-28 | 沃尔夫冈·福斯 | Pressure limiting valve with direct hydraulic damper |
| CN103470815A (en) * | 2013-09-30 | 2013-12-25 | 常德中联重科液压有限公司 | Balance valve |
-
2016
- 2016-08-13 CN CN201610663569.5A patent/CN106051185B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8503160U1 (en) * | 1985-02-06 | 1985-10-10 | GAT Grubenausbau GmbH, 5840 Schwerte | Pressure relief valve with an O-ring with a small cord thickness |
| DE3510462A1 (en) * | 1985-03-22 | 1986-10-02 | Jörn 4320 Hattingen Dams | Pressure relief valve with a sealed spring space |
| DE4129799A1 (en) * | 1991-09-09 | 1993-03-11 | Quante Heinrich Berg Ing | Pressure limiting valve for hydraulic jacks in mine - has simple set and release mechanism and non-return valve all integral with jack |
| US20030010384A1 (en) * | 2000-02-04 | 2003-01-16 | Mogens Poulsen | Excess pressure release for gas |
| CN1673592A (en) * | 2004-02-05 | 2005-09-28 | 沃尔夫冈·福斯 | Pressure limiting valve with direct hydraulic damper |
| CN103470815A (en) * | 2013-09-30 | 2013-12-25 | 常德中联重科液压有限公司 | Balance valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150684A (en) * | 2017-12-25 | 2018-06-12 | 宁波文泽机电技术开发有限公司 | A kind of two-way pressure reducing valve |
| CN108167491A (en) * | 2017-12-25 | 2018-06-15 | 宁波文泽机电技术开发有限公司 | A kind of No leakage three-way pressure reducing valve |
| CN108167491B (en) * | 2017-12-25 | 2019-08-13 | 良名阀门科技有限公司 | A kind of No leakage three-way pressure reducing valve |
| CN109099023A (en) * | 2018-09-29 | 2018-12-28 | 邵延荣 | Balanced valve |
| CN109099023B (en) * | 2018-09-29 | 2020-08-21 | 艾肯（江苏）工业技术有限公司 | Balance valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106051185B (en) | 2018-09-28 |
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Denomination of invention: A built-in balance valve with buffering function Effective date of registration: 20230620 Granted publication date: 20180928 Pledgee: Agricultural Bank of China Limited Yongjia County sub branch Pledgor: LIXIN VALVE GROUP CO.,LTD. Registration number: Y2023330001238 |
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