CN107091338A - A kind of shuttle valve, hydraulic system and plant equipment - Google Patents
A kind of shuttle valve, hydraulic system and plant equipment Download PDFInfo
- Publication number
- CN107091338A CN107091338A CN201710385833.8A CN201710385833A CN107091338A CN 107091338 A CN107091338 A CN 107091338A CN 201710385833 A CN201710385833 A CN 201710385833A CN 107091338 A CN107091338 A CN 107091338A
- Authority
- CN
- China
- Prior art keywords
- valve
- mouthfuls
- shuttle valve
- frustum
- shuttle
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 239000007787 solid Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
- F16K1/385—Valve members of conical shape contacting in the closed position, over a substantial axial length, a seat surface having the same inclination
-
- 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
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0272—Construction of housing; Use of materials therefor of lift valves valves provided with a lining
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The present invention proposes a kind of shuttle valve, including valve pocket and the valve element being movably arranged in the valve pocket, the first end of the valve element is provided with the first frustum, the first conical seat coordinated with first frustum is provided with inside the valve pocket, and be taper-face contact between first frustum and first conical seat, at least provided with A mouthfuls and B mouthfuls on the valve pocket, during the A mouthfuls of oil-feed, first frustum of described valve element one end is contacted with first conical seat into face, and forms conical surface seal.The shuttle valve of this structure, by the way that the one or both ends of valve element are arranged to frustum structure, so that the cooperation between valve element and valve pocket is coordinated from the point of existing structure, line cooperation is changed into cone match, greatly improve the sealing effectiveness and sealing property of shuttle valve, and sealing stability is more preferable, it can realize that work is few without leakage, or amount of leakage, reach the requirement within 5 drops/Min.In addition, the present invention also proposes a kind of hydraulic system and plant equipment including above-mentioned shuttle valve.
Description
Technical field
The present invention relates to hydraulic machinery field, more particularly to a kind of shuttle valve, hydraulic system and plant equipment.
Background technology
Shuttle valve is the product that actuator unites two into one with valve body, now widely used shuttle valve, due to valve body, piston, valve
Core uses stainless steel, in appearance better appearance, top grade, and seal hardly connects with medium in actual use
Touch, with more resistant to corrosion the characteristics of, along with internal only one of which part (piston) motion so that move simple and reliable, the longevity
Life length, repairs also simpler, and can any direction installation.
However, for amount of leakage requirement within 5 drops/Min, sealing property requires relatively stable shuttle valve, existing market
Upper conventional structure uses steel ball sealing structure, because using circular steel ball, causing the seal point position of each steel ball can all produce
Changing, work frequently or high pressure field, the shuttle valve stability of this structure can excessively poor, often occur leakage rate greatly
Problem, or even cisco unity malfunction.Therefore, how to provide a kind of stability more structurally sound shuttle valve, and including this shuttle valve
Hydraulic system and plant equipment, into the technical problem of those skilled in the art's urgent need to resolve.
The content of the invention
The technical problem to be solved in the present invention is：There is provided a kind of stability more structurally sound shuttle valve, and including this shuttle valve
Hydraulic system and plant equipment.
What the solution of the present invention was realized in：The present invention proposes a kind of shuttle valve, including valve pocket and movably sets
The valve element being placed in the valve pocket, the first end of the valve element, which is provided with inside the first frustum, the valve pocket, to be provided with and described first
The first conical seat that frustum coordinates, and be taper-face contact between first frustum and first conical seat, on the valve pocket
At least provided with A mouthfuls and B mouthfuls, during the A mouthfuls of oil-feed, first frustum of described valve element one end connects with first conical seat into face
Touch, and form conical surface seal.The shuttle valve of this structure, by the way that the one or both ends of valve element are arranged to frustum structure so that valve element
Cooperation between valve pocket is coordinated from the point of existing structure, line cooperation is changed into cone match, greatly improves the sealing of shuttle valve
Effect and sealing property, and sealing stability is more preferably, can realize that work is few without leakage, or amount of leakage, reach within 5 drops/Min
Requirement.
Another technical scheme of the present invention is that on above-mentioned basis the shuttle valve also includes overcoat, and the overcoat is consolidated
Surely on the outside of the end for being arranged at the valve pocket, and the periphery of the overcoat is provided with the first sealing ring.
Another technical scheme of the present invention is that on above-mentioned basis the shuttle valve also includes being used to match somebody with somebody with the valve element
The valve seat of conjunction, the valve seat is fixedly installed in the overcoat, and first conical seat is arranged at the end of the valve seat.
Another technical scheme of the present invention is that on above-mentioned basis the valve seat is also set away from one end of the overcoat
There is the second conical seat, the second end of the valve element is provided with the second frustum, and second frustum connects with second conical seat into face
Touch, and form conical surface seal.
Another technical scheme of the present invention is that on above-mentioned basis the periphery of the valve seat is additionally provided with the first back-up ring,
The second sealing ring is arranged with first back-up ring.
Another technical scheme of the present invention is on above-mentioned basis, C mouthfuls is additionally provided with the valve pocket, described A mouthfuls sets
One end end that the valve pocket deviates from the overcoat is placed in, described B mouthfuls and C mouthfuls may be contained within the side of the valve pocket, and the B
Mouth is arranged at described between A mouthfuls and C mouthful.
Another technical scheme of the present invention is that on above-mentioned basis the valve pocket periphery is additionally provided with the second back-up ring, institute
State and the 3rd sealing ring is additionally provided with the second back-up ring.
Another technical scheme of the present invention is that on above-mentioned basis the valve pocket is close to described A mouthfuls one end periphery
It is additionally provided with third gear circle, the third gear circle and is additionally provided with the 4th sealing ring.
On the other hand, the present invention also proposes a kind of hydraulic system, including shuttle valve, and the shuttle valve is described in as above any one
Shuttle valve.
Finally, the present invention also proposes a kind of plant equipment, including shuttle valve and/or hydraulic system, and the shuttle valve is such as to take up an official post
Shuttle valve described in one, the hydraulic system is hydraulic system as described above.
Brief description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not constitute inappropriate limitation of the present invention.
Fig. 1 is a kind of structural representation of shuttle valve of the invention；
Fig. 2 is Fig. 1 top view；
Fig. 3 is the fundamental diagram of shuttle valve in Fig. 1.
Reference corresponding relation is：
The valve seat of 12 first sealing ring of overcoat 3
The back-up ring of 4 second sealing ring, 5 first back-up ring 6 second
The valve pocket of 7 the 3rd sealing ring, 8 valve element 9
The frustum of the 4th sealing ring of 10 third gear circle 11 12 first
The conical seat of 13 second frustum 14 first
Embodiment
The present invention will be described in detail below in conjunction with the accompanying drawings, and the description of this part is only exemplary and explanatory, should not
There is any restriction effect to protection scope of the present invention.In addition, description of the those skilled in the art according to this document, can be right
Feature in this document in embodiment and not in be the same as Example carries out respective combination.
The embodiment of the present invention is as follows, refers to the shuttle valve shown in Fig. 1 to Fig. 3, specifically includes valve pocket 9 and is movably disposed
Valve element 8 in the valve pocket 9, the first end of valve element 8, i.e., upper end shown in Fig. 1 is provided with the first frustum 12, valve pocket 9 it is interior
Portion is simultaneously provided with the first conical seat 14 coordinated with the first frustum 12, when the first frustum 12 and the cooperation of the first conical seat 14, two
It is taper-face contact at the cooperation of person, meanwhile, A mouthfuls and B mouthfuls are at least additionally provided with valve pocket 9, during A mouthfuls of oil-feeds, the first of the upper end of valve element 8
The conical seat 14 of frustum 12 and first forms conical surface seal into taper-face contact.The shuttle valve of this structure, passes through one end valve element 8
Or two ends are arranged to frustum structure so that the cooperation between valve element 8 and valve pocket 9 is coordinated from the point of existing structure, line cooperation is changed into
Cone match, greatly improves the sealing effectiveness and sealing property of shuttle valve, and sealing stability is more preferably, and work can be realized without letting out
Dew, or amount of leakage are few, reach the requirement within 5 drops/Min.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in figure 1, shuttle valve also includes overcoat 1, more
For specifically, overcoat 1 is fixedly installed on the outside of the upper end end of valve pocket 9, and its connected mode between valve pocket 9 can be with a variety of more
Sample, is specifically as follows clamping etc., is not limited thereto.In addition, the periphery of overcoat 1 is additionally provided with the first sealing ring 2, the first sealing ring
2 can specifically be sheathed on overcoat 1.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in figure 1, shuttle valve also includes being used for valve element 8
The valve seat 3 of cooperation, valve seat 3 is fixedly installed in overcoat 1, also, the first conical seat 14 is arranged at the lower end of valve seat 3, valve
When core 8 is moved up, the first frustum 12 and the formation of the first conical seat 14 coordinate, that is, realize cone match.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in figure 1, valve pocket 9 deviates from the one of overcoat 1
End, i.e., the lower end shown in figure is additionally provided with the second conical seat, the second end of valve element 8, i.e., the lower end shown in figure also is provided with second
Frustum 13, when valve element 8 is moved down, formation face is contacted between the second frustum 13 and the second conical seat, and forms conical surface seal.This sets
Mode is put, if the first frustum 12 is as the cooperation between the first conical seat 14 so that cooperation between valve element 8 and valve pocket 9 by
The point of existing structure coordinates, line cooperation is changed into cone match, greatly improves the sealing effectiveness and sealing property of shuttle valve, and close
Seal stability more preferably, can realize that work is few without leakage, or amount of leakage, reach the requirement within 5 drops/Min.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in fig. 1, the periphery of valve seat 3 is additionally provided with
First back-up ring 5, the first back-up ring 5 is specially to be arranged with second on the annular retaining ring being recessed to the axis direction of valve seat 3, the first back-up ring 5
Sealing ring 4.This set-up mode, sets the first back-up ring 5 and the first sealing ring 2 herein, is mainly used in preventing fluid from valve pocket 9
Hydraulic fluid port is leaked.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in fig. 1, and in addition to A mouthfuls and B mouthfuls, valve pocket
C mouthfuls are additionally provided with 9, A mouthfuls are arranged at valve pocket 9 away from one end end of overcoat 1, i.e., the lower end shown in figure, and B mouthfuls and C mouthfuls then set
On the side for being placed in valve pocket 9, also, B mouthfuls are arranged between A mouthfuls and C mouthfuls.When A mouthfuls of oil-feeds, valve element 8 is moved up, and is blocked up simultaneously
Live in B mouthfuls and C mouthfuls, it is ensured that the amount of leakage between B mouthfuls and C mouthfuls is within 5 drops/Min.Equally, when C mouthfuls of oil-feeds, valve element 8 is to moving down
It is dynamic, while blocking A mouthfuls and B mouthfuls, it is ensured that the amount of leakage between A mouthfuls and B mouthfuls is within 5 drops/Min.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in fig. 1, the periphery of valve port is additionally provided with
Second back-up ring 6, the structure of the second back-up ring 6 is similar with the structure of the first back-up ring 5, the annular scrobicular ring as caved inward, second gear
The 3rd sealing ring 7 is additionally provided with circle 6.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in fig. 1, valve pocket 9 close to A mouthfuls one
End periphery is additionally provided with third gear circle 10, and equally, third gear circle 10 is similar with the structure of the first back-up ring 5 and the second back-up ring 6, third gear
The 4th sealing ring 11 is additionally provided with circle 10.For the first sealing ring 2, the second sealing ring 4, the 3rd sealing ring 7 and the 4th sealing ring
11, material is both preferably rubber or nylon, is preferably shaped to O-ring seals.
The operation principle of shuttle valve is as follows：
Overcoat 1 is used to prevent leakage phenomenon with the first sealing rings of O 2, and valve seat 3 is fixed in overcoat 1 by valve pocket 9,
To prevent B mouthfuls and A mouthfuls, C mouthfuls of leakage string oil, respectively with the third gear circle 10 of the 4th sealing ring 11, the second back-up ring 6 and the 3rd sealing ring
7 are isolated, to ensure that the fluid inside valve pocket 9 toward C mouthfuls of leakages, is not isolated with the first back-up ring 55 with the second sealing ring 4,
Matching somebody with somebody between valve seat 3 and valve seat 3 is combined into cone match, and the two ends of valve element 8 set the first frustum 12 and the second frustum 13 respectively, in A
During mouth oil-feed, valve element 8 pushes C mouthfuls of directions to, now the upper end of valve element 8 and the formation taper-face contact of valve seat 3, B mouthfuls with C mouthfuls of cut-outs,
Ensure that B mouthfuls to C mouthfuls of amount of leakage is controlled within 5 drops/Min.In C mouthfuls of oil-feeds, valve element 8 pushes A mouthfuls of directions, now, valve element 8 to
Lower end and valve pocket 9 between with being combined into cone match, B mouthful are cut off with A mouthfuls, it is ensured that B mouthfuls to A mouthfuls of amount of leakage control is 5
Within drop/Min.
On the other hand, the present invention also proposes a kind of hydraulic system, iron blood shuttle valve, and more specifically, shuttle valve is as described above
Shuttle valve.It should be noted that including the hydraulic system of above-mentioned shuttle valve, correspondingly had the advantage that with above-mentioned shuttle valve, i.e.,
The sealing property and stability of hydraulic system are more preferable.
Finally, the present invention also proposes a kind of plant equipment, and plant equipment includes shuttle valve and/or hydraulic system, and shuttle valve is specific
For shuttle valve as described above, hydraulic system is hydraulic system as described above.The plant equipment of this structure, correspondingly, it may have
Sealing property and the more preferable advantage of stability.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of shuttle valve, it is characterised in that including valve pocket (9) and the valve element (8) being movably arranged in the valve pocket (9),
The first end of the valve element (8) is provided with to be provided with inside the first frustum (12), the valve pocket (9) to be coordinated with first frustum (12)
The first conical seat (14), and between first frustum (12) and first conical seat (14) be taper-face contact, the valve
Cover on (9) at least provided with A mouthfuls and B mouthfuls, during the A mouthfuls of oil-feed, first frustum (12) and described first of described valve element (8) one end
Conical seat (14) is contacted into face, and forms conical surface seal.
2. shuttle valve according to claim 1, it is characterised in that the shuttle valve also includes overcoat (1), the overcoat (1) is solid
Surely on the outside of the end for being arranged at the valve pocket (9), and the periphery of the overcoat (1) is provided with the first sealing ring (2).
3. shuttle valve according to claim 2, it is characterised in that the shuttle valve also includes being used to coordinate with the valve element (8)
Valve seat (3), the valve seat (3) is fixedly installed in the overcoat (1), and first conical seat (14) is arranged at the valve
The end of seat (3).
4. shuttle valve according to claim 3, it is characterised in that the valve seat (3) also sets away from one end of the overcoat (1)
There is the second conical seat, the second end of the valve element (8) is provided with the second frustum (13), second frustum (13) and the described second cone
Shape seat forms conical surface seal into face contact.
5. shuttle valve according to claim 4, it is characterised in that the periphery of the valve seat (3) is additionally provided with the first back-up ring (5),
The second sealing ring (4) is arranged with first back-up ring (5).
6. shuttle valve according to claim 5, it is characterised in that be additionally provided with C mouthfuls on the valve pocket (9), described A mouthfuls is arranged at
The valve pocket (9) deviates from one end end of the overcoat (1), described B mouthful with the C mouthfuls of sides that may be contained within the valve pocket (9), and
Described B mouthfuls be arranged at it is described between A mouthfuls and C mouthful.
7. shuttle valve according to claim 6, it is characterised in that valve pocket (9) periphery is additionally provided with the second back-up ring (6), institute
State in the second back-up ring (6) and be additionally provided with the 3rd sealing ring (7).
8. shuttle valve according to claim 7, it is characterised in that the valve pocket (9) also sets close to described A mouthfuls one end periphery
Have and be additionally provided with the 4th sealing ring (11) on third gear circle (10), the third gear circle (10).
9. a kind of hydraulic system, including shuttle valve, it is characterised in that the shuttle valve is the shuttle any one of claim 1 to 8
Valve.
10. a kind of plant equipment, including shuttle valve and/or hydraulic system, it is characterised in that the shuttle valve is in claim 1 to 8
Shuttle valve described in any one, the hydraulic system is the hydraulic system described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710385833.8A CN107091338A (en) | 2017-05-26 | 2017-05-26 | A kind of shuttle valve, hydraulic system and plant equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710385833.8A CN107091338A (en) | 2017-05-26 | 2017-05-26 | A kind of shuttle valve, hydraulic system and plant equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107091338A true CN107091338A (en) | 2017-08-25 |
Family
ID=59639660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710385833.8A Pending CN107091338A (en) | 2017-05-26 | 2017-05-26 | A kind of shuttle valve, hydraulic system and plant equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107091338A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454456A (en) * | 2019-08-20 | 2019-11-15 | 北京特种机械研究所 | A kind of nested type cone sealed hydraulic shuttle valve |
| CN114439800A (en) * | 2022-01-13 | 2022-05-06 | 涌镇液压机械（上海）有限公司 | Sliding cone shuttle valve restrictor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200946692Y (en) * | 2006-03-29 | 2007-09-12 | 宝山钢铁股份有限公司 | High temperature shuttle valve for water press |
| CN201661537U (en) * | 2010-02-11 | 2010-12-01 | 卢宇 | Upper electro-hydraulic integrating operation rotary control valve of mechanical crane |
| CN202811595U (en) * | 2012-09-24 | 2013-03-20 | 温州美瑞克液压有限公司 | Novel thread plug-in mounting type split shuttle valve |
| CN203516832U (en) * | 2013-08-22 | 2014-04-02 | 重庆达腾科技发展有限公司 | Two-position three-way valve for wellhead safety control system |
| CN204358170U (en) * | 2014-12-26 | 2015-05-27 | 中国北方车辆研究所 | A kind of two-way No leakage sliding valve style shuttle valve |
| CN207049350U (en) * | 2017-05-26 | 2018-02-27 | 湖南凯恩利液压机械制造有限公司 | A kind of shuttle valve, hydraulic system and plant equipment |
-
2017
- 2017-05-26 CN CN201710385833.8A patent/CN107091338A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200946692Y (en) * | 2006-03-29 | 2007-09-12 | 宝山钢铁股份有限公司 | High temperature shuttle valve for water press |
| CN201661537U (en) * | 2010-02-11 | 2010-12-01 | 卢宇 | Upper electro-hydraulic integrating operation rotary control valve of mechanical crane |
| CN202811595U (en) * | 2012-09-24 | 2013-03-20 | 温州美瑞克液压有限公司 | Novel thread plug-in mounting type split shuttle valve |
| CN203516832U (en) * | 2013-08-22 | 2014-04-02 | 重庆达腾科技发展有限公司 | Two-position three-way valve for wellhead safety control system |
| CN204358170U (en) * | 2014-12-26 | 2015-05-27 | 中国北方车辆研究所 | A kind of two-way No leakage sliding valve style shuttle valve |
| CN207049350U (en) * | 2017-05-26 | 2018-02-27 | 湖南凯恩利液压机械制造有限公司 | A kind of shuttle valve, hydraulic system and plant equipment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454456A (en) * | 2019-08-20 | 2019-11-15 | 北京特种机械研究所 | A kind of nested type cone sealed hydraulic shuttle valve |
| CN110454456B (en) * | 2019-08-20 | 2020-06-09 | 北京特种机械研究所 | Nested cone sealing hydraulic shuttle valve |
| CN114439800A (en) * | 2022-01-13 | 2022-05-06 | 涌镇液压机械（上海）有限公司 | Sliding cone shuttle valve restrictor |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170825 |
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| RJ01 | Rejection of invention patent application after publication |