CN108005987A - Hydraulicdirectional control valve reversing oil circuit structure - Google Patents
Hydraulicdirectional control valve reversing oil circuit structure Download PDFInfo
- Publication number
- CN108005987A CN108005987A CN201711495454.0A CN201711495454A CN108005987A CN 108005987 A CN108005987 A CN 108005987A CN 201711495454 A CN201711495454 A CN 201711495454A CN 108005987 A CN108005987 A CN 108005987A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- annular seal
- oil
- seal section
- 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.)
- Withdrawn
Links
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 238000009434 installation Methods 0.000 claims abstract description 15
- 230000007704 transition Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 62
- 239000010720 hydraulic oil Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
-
- 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
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/0655—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with flat slides
Abstract
The present invention relates to a kind of hydraulicdirectional control valve, specifically hydraulicdirectional control valve reversing oil circuit structure, belong to hydraulicdirectional control valve oil channel structures technical field.It includes valve rod and valve body, and valve rod installation cavity is transversely provided with valve body, and valve rod is set in valve rod installation cavity, and valve rod can horizontally slip in valve rod installation cavity；Oil suction chamber is respectively arranged on the left side and the right side first annular seal space and the second annular seal space, valve rod is equipped with the first valve stem seal section and the second valve stem seal section, first valve stem seal section can be sealed with first annular seal space to be coordinated, and the second valve stem seal section can be sealed with the second annular seal space to be coordinated；The first valve stem seal section medial extremity to the second valve stem seal section medial extremity length is less than oil inlet cavity length in valve body on valve rod so that when first annular seal space and any one sealing of the second annular seal space, another keeps it turned on.The present invention can effectively reduce oil cylinder in reversal valve commutation process and fall degree after rise, avoid the severe vibration in compartment, add the comfort that user uses.
Description
Technical field
The present invention relates to a kind of hydraulicdirectional control valve, specifically hydraulicdirectional control valve reversing oil circuit structure, belong to hydraulic pressure and change
To valve oil line structure technical field.
Background technology
With expanding economy, the application of dump truck is more and more extensive, is changed as with the matching used hydraulic pressure of dumper
To valve, extensive development has also been obtained.Oil occurs in the hydraulicdirectional control valve that country's dump truck uses at present in commutation process
The situation that cylinder is fallen after rise, oil cylinder cause the severe vibration in compartment when falling after rise, seriously affect the usage experience of user.
The content of the invention
It is an object of the present invention to overcome the above deficiencies, so that a kind of hydraulicdirectional control valve reversing oil circuit structure is provided,
Oil cylinder in reversal valve commutation process can be effectively reduced and fall degree after rise, avoid the severe vibration in compartment, add user's use
Comfort.
According to technical solution provided by the invention, hydraulicdirectional control valve reversing oil circuit structure includes valve rod and valve body, its feature
It is：Valve rod installation cavity is transversely provided with valve body, valve rod is set in valve rod installation cavity, valve rod can be slided left and right in valve rod installation cavity
It is dynamic；Valve body lower end is equipped with oil inlet, and valve rod installation cavity middle part is oil suction chamber towards oil inlet position, and the oil suction chamber left and right sides is respectively
Equipped with first annular seal space and the second annular seal space, valve rod is equipped with the first valve stem seal section and the second valve stem seal section, the first valve rod
Seal section can be sealed with first annular seal space to be coordinated, and the second valve stem seal section can be sealed with the second annular seal space to be coordinated；The valve
The first valve stem seal section medial extremity to the second valve stem seal section medial extremity length is less than oil inlet cavity length in valve body on bar, and first is close
When sealing chamber and any one sealing of the second annular seal space, another keeps it turned on；Valve body upper end is equipped with oil outlet and oil return opening, fuel-displaced
Mouth is connected with first annular seal space outboard end, and oil return opening is connected with the second annular seal space outboard end.
Further, the first valve stem seal section includes the first sealing cylinder and first frustum of a cone, the first frustum of a cone major diameter
The first sealing cylinder of end connection, the diameter of the first sealing cylinder are more than the first frustum of a cone larger diameter end diameter, the first sealing cylinder
First annular seal space can be sealed.
Further, the second valve stem seal section includes the second sealing cylinder and second frustum of a cone, the second frustum of a cone major diameter
The second sealing cylinder of end connection, the diameter of the second sealing cylinder are more than the second frustum of a cone larger diameter end diameter, the second sealing cylinder
The second annular seal space can be sealed.
Further, transition cylinder, the diameter of transition cylinder and are equipped between the second sealing cylinder and second frustum of a cone
Two frustum of a cone larger diameter end diameters are identical.
Further, the first valve stem seal section outboard end to the second valve stem seal section outboard end length is L1 on valve rod, valve
Internal oil inlet cavity length is L2, and the second frustum of a cone length in the second valve stem seal section is L3, L1-L2=L3.
Compared with the prior art the present invention has the following advantages：
It is the configuration of the present invention is simple, compact, reasonable, oil cylinder in reversal valve commutation process can be effectively reduced and fall degree after rise, avoided
The severe vibration in compartment, adds the comfort that user uses.
Brief description of the drawings
Fig. 1 is stem structure figure of the present invention.
Fig. 2 is valve body structure figure of the present invention.
Fig. 3 is oil outlet closed state figure of the present invention.
Fig. 4 is oil return opening closed state figure of the present invention.
Description of reference numerals：1- valve rods, 2- valve bodies, the first valve stem seals of 3- section, the first sealing cylinders of 3.1-, 3.2- first
The frustum of a cone, the second valve stem seals of 4- section, the second sealing cylinders of 4.1-, second frustums of a cone of 4.2-, 4.3- transition cylinder, 5- oil inlets
Mouth, 6- oil outlets, 7- oil return openings, 8- first annular seal spaces, the second annular seal spaces of 9-, 10- oil suction chambers.
Embodiment
The present invention will be further described with reference to the embodiment in attached drawing below：
As shown in Fig. 1 ~ 4, the invention mainly comprises valve rod 1 and valve body 2, valve rod installation cavity, valve rod installation are transversely provided with valve body 2
Valve rod 1 is set in chamber, and valve rod 1 can horizontally slip in valve rod installation cavity.
2 lower end of valve body is equipped with oil inlet 5, towards 5 position of oil inlet is oil suction chamber 10 in the middle part of valve rod installation cavity, oil suction chamber 10
It is respectively arranged on the left side and the right side 8 and second annular seal space 9 of first annular seal space.Valve rod 1 is equipped with the first valve stem seal section 3 and the second valve rod
Seal section 4, the first valve stem seal section 3 can be sealed with first annular seal space 8 to be coordinated, the second valve stem seal section 4 can with it is second close
The sealing of chamber 9 is sealed to coordinate.
The first valve stem seal section 3 includes the first sealing cylinder 3.1 and first frustum of a cone 3.2, and first frustum of a cone 3.2 is big
Diameter end connects the first sealing cylinder 3.1, and the diameter of the first sealing cylinder 3.1 is more than first frustum of a cone, 3.2 larger diameter end diameter,
First sealing cylinder 3.1 can seal first annular seal space 8.
The second valve stem seal section 4 includes the second sealing cylinder 4.1 and second frustum of a cone 4.2, and second frustum of a cone 4.2 is big
Diameter end connects the second sealing cylinder 4.1, and the diameter of the second sealing cylinder 4.1 is more than second frustum of a cone, 4.2 larger diameter end diameter,
Second sealing cylinder 4.1 can seal the second annular seal space 9.
Be equipped with transition cylinder 4.3 between second sealing cylinder, 4.1 and second frustum of a cone 4.2, transition cylinder 4.3 it is straight
Footpath is identical with second frustum of a cone, 4.2 larger diameter end diameter.
On the valve rod 1 first valve stem seal section, 3 outboard end to 4 outboard end length of the second valve stem seal section be L1, valve body 2
Interior 10 length of oil suction chamber is L2, and second frustum of a cone, 4.2 length in the second valve stem seal section 4 is L3, as L1-L2=L3, liquid at this time
Press reversal valve commutation states optimal, oil cylinder falls degree minimum after rise in reversal valve commutation process, avoids the severe vibration in compartment, increases
Add the comfort user experience comfort level that user uses best.
First valve stem seal section, 3 medial extremity is less than valve body 2 to 4 medial extremity length of the second valve stem seal section on the valve rod 1
Interior 10 length of oil suction chamber, 8 and second annular seal space 9 of first annular seal space any one sealing when, another keeps it turned on.
2 upper end of valve body is equipped with oil outlet 6 and oil return opening 7, and oil outlet 6 is connected with 8 outboard end of first annular seal space, oil return opening 7
Connected with 9 outboard end of the second annular seal space.
Medial extremity and outboard end referred to herein is referred to using valve inner center as coordinate, close to valve inner center
For medial extremity, away from valve inner center for outboard end.First annular seal space 8, the medial extremity of the first valve stem seal section 3 are
Right end in attached drawing, first annular seal space 8,3 outboard end of the first valve stem seal section are left end in attached drawing.Second annular seal space 9, the second valve
4 medial extremity of bar seal section is left end in attached drawing, and the second annular seal space 9,4 outboard end of the second valve stem seal section are right in attached drawing
End.
The present invention operation principle be：When in use, the external hydraulic gear pump of oil inlet, the external hydraulic cylinder of oil outlet,
The external hydraulic oil container of oil return opening.When valve rod is communicated with position, that is, oil inlet that valve body is in shown in Fig. 3 with oil return opening, hydraulic oil
It is fed directly to by oil inlet in oil return opening, at this time since the oil outlet of hydraulicdirectional control valve is in closed state, hydraulic cylinder
In will not produce the inflow and outflow of hydraulic oil, therefore hydraulic cylinder remains static；When the valve rod of hydraulicdirectional control valve is by Fig. 3
During shown position-commutate mode to position shown in Fig. 4, since oil inlet is connected with oil outlet, and oil return opening is in isolation, therefore
Hydraulic oil is entered in oil outlet along oil inlet, promotes hydraulic cylinder to lift upwards.
During valve rod 1 is from Fig. 3 positions to Fig. 4 position-commutate modes, with the movement of valve rod 1 to the right, the closing of oil outlet
Gradually opened, and at this time if oil return opening does not completely cut off, oil outlet is connected with oil inlet with oil return opening, due to oil return opening
Directly it is connected with hydraulic oil container, therefore recycle muzzle pressure can be ignored, and oil outlet is with oil cylinder due to being connected, oil outlet pressure
Power is larger, and the hydraulic oil in oil outlet under the action of pressure differential can be rapidly flowed into oil return opening so as to cause hydraulic cylinder
Decline, therefore the present invention be based on this principle, if to ensure that oil cylinder does not produce decline in commutation process, in the envelope of oil outlet
Close when being opened, oil return opening must be close to completely isolated state, so as to reach commutation process hydraulic cylinder without being decreased obviously
State.Fig. 1 is shown with L1 and two sizes of L3, and Fig. 2 is shown with size L3, by the repeated examinations of practice, as L1-L2=L3,
Hydraulicdirectional control valve commutation states are optimal, and user experience comfort level is best.
Claims (5)
1. a kind of hydraulicdirectional control valve reversing oil circuit structure, including valve rod（1）And valve body（2）, it is characterized in that：Valve body（2）Interior transverse direction
Equipped with valve rod installation cavity, valve rod is set in valve rod installation cavity（1）, valve rod（1）It can horizontally slip in valve rod installation cavity；Valve body
（2）Lower end is equipped with oil inlet（5）, towards oil inlet in the middle part of valve rod installation cavity（5）Position is oil suction chamber（10）, oil suction chamber（10）It is left
Right both sides are respectively equipped with first annular seal space（8）With the second annular seal space（9）, valve rod（1）It is equipped with the first valve stem seal section（3）With
Two valve stem seal sections（4）, the first valve stem seal section（3）Can be with first annular seal space（8）Sealing coordinates, the second valve stem seal section
（4）Can be with the second annular seal space（9）Sealing coordinates；The valve rod（1）Upper first valve stem seal section（3）Medial extremity is to the second valve rod
Seal section（4）Medial extremity length is less than valve body（2）Interior oil suction chamber（10）Length, first annular seal space（8）With the second annular seal space（9）Appoint
During one sealing of meaning, another keeps it turned on；Valve body（2）Upper end is equipped with oil outlet（6）And oil return opening（7）, oil outlet（6）With
One annular seal space（8）Outboard end connects, oil return opening（7）With the second annular seal space（9）Outboard end connects.
2. hydraulicdirectional control valve reversing oil circuit structure as claimed in claim 1, it is characterized in that：The first valve stem seal section（3）
Including the first sealing cylinder（3.1）With first frustum of a cone（3.2）, first frustum of a cone（3.2）Larger diameter end connection the first sealing circle
Column（3.1）, the first sealing cylinder（3.1）Diameter be more than first frustum of a cone（3.2）Larger diameter end diameter, the first sealing cylinder
（3.1）First annular seal space can be sealed（8）.
3. hydraulicdirectional control valve reversing oil circuit structure as claimed in claim 1, it is characterized in that：The second valve stem seal section（4）
Including the second sealing cylinder（4.1）With second frustum of a cone（4.2）, second frustum of a cone（4.2）Larger diameter end connection the second sealing circle
Column（4.1）, the second sealing cylinder（4.1）Diameter be more than second frustum of a cone（4.2）Larger diameter end diameter, the second sealing cylinder
（4.1）The second annular seal space can be sealed（9）.
4. hydraulicdirectional control valve reversing oil circuit structure as claimed in claim 3, it is characterized in that：Second sealing cylinder（4.1）
With second frustum of a cone（4.2）Between be equipped with transition cylinder（4.3）, transition cylinder（4.3）Diameter and second frustum of a cone（4.2）Greatly
Diameter end diameter is identical.
5. hydraulicdirectional control valve reversing oil circuit structure as claimed in claim 3, it is characterized in that：The valve rod（1）Upper first valve rod
Seal section（3）Outboard end is to the second valve stem seal section（4）Outboard end length is L1, valve body（2）Interior oil suction chamber（10）Length is L2,
Second valve stem seal section（4）On second frustum of a cone（4.2）Length is L3, L1-L2=L3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711495454.0A CN108005987A (en) | 2017-12-31 | 2017-12-31 | Hydraulicdirectional control valve reversing oil circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711495454.0A CN108005987A (en) | 2017-12-31 | 2017-12-31 | Hydraulicdirectional control valve reversing oil circuit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108005987A true CN108005987A (en) | 2018-05-08 |
Family
ID=62049526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711495454.0A Withdrawn CN108005987A (en) | 2017-12-31 | 2017-12-31 | Hydraulicdirectional control valve reversing oil circuit structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108005987A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3951166A (en) * | 1974-06-12 | 1976-04-20 | Whitener Robert V | Rapid acting valve assembly |
| US4253481A (en) * | 1979-05-07 | 1981-03-03 | Gilmore Valve Company | Cushioned shuttle valve |
| DK480484D0 (en) * | 1983-10-06 | 1984-10-05 | Hoogeveen Appendagefab | CLOSE VALVE |
| EP1258663A2 (en) * | 1997-05-23 | 2002-11-20 | Smiths Industries Hydraulics Company Limited | Hydraulic valve system |
| CN101949396A (en) * | 2010-09-30 | 2011-01-19 | 无锡英特帕普威孚液压有限责任公司 | Hydraulic reversing valve with return oil stepless speed control function |
| CN102889398A (en) * | 2012-10-12 | 2013-01-23 | 常德中联重科液压有限公司 | Shuttle valve, shuttle valve driving type device, winding drum brake cylinder control loop and crane |
| CN203614810U (en) * | 2013-10-25 | 2014-05-28 | 宁波明启液压机械有限公司 | Direct-acting slide valve |
| CN104165166A (en) * | 2014-07-30 | 2014-11-26 | 株洲中研流体技术有限公司 | Compact-type telescopic oil cylinder changeover valve set |
| CN105422911A (en) * | 2015-12-13 | 2016-03-23 | 北京工业大学 | Double-cone type two-position four-way electromagnetic reversing valve |
| CN207715460U (en) * | 2017-12-31 | 2018-08-10 | 无锡英特帕普威孚液压有限责任公司 | Hydraulicdirectional control valve reversing oil circuit structure |
-
2017
- 2017-12-31 CN CN201711495454.0A patent/CN108005987A/en not_active Withdrawn
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3951166A (en) * | 1974-06-12 | 1976-04-20 | Whitener Robert V | Rapid acting valve assembly |
| US4253481A (en) * | 1979-05-07 | 1981-03-03 | Gilmore Valve Company | Cushioned shuttle valve |
| DK480484D0 (en) * | 1983-10-06 | 1984-10-05 | Hoogeveen Appendagefab | CLOSE VALVE |
| EP1258663A2 (en) * | 1997-05-23 | 2002-11-20 | Smiths Industries Hydraulics Company Limited | Hydraulic valve system |
| CN101949396A (en) * | 2010-09-30 | 2011-01-19 | 无锡英特帕普威孚液压有限责任公司 | Hydraulic reversing valve with return oil stepless speed control function |
| CN102889398A (en) * | 2012-10-12 | 2013-01-23 | 常德中联重科液压有限公司 | Shuttle valve, shuttle valve driving type device, winding drum brake cylinder control loop and crane |
| CN203614810U (en) * | 2013-10-25 | 2014-05-28 | 宁波明启液压机械有限公司 | Direct-acting slide valve |
| CN104165166A (en) * | 2014-07-30 | 2014-11-26 | 株洲中研流体技术有限公司 | Compact-type telescopic oil cylinder changeover valve set |
| CN105422911A (en) * | 2015-12-13 | 2016-03-23 | 北京工业大学 | Double-cone type two-position four-way electromagnetic reversing valve |
| CN207715460U (en) * | 2017-12-31 | 2018-08-10 | 无锡英特帕普威孚液压有限责任公司 | Hydraulicdirectional control valve reversing oil circuit structure |
Non-Patent Citations (1)
| Title |
|---|
| 朱仁盛，闵婕: "气动与液压控制技术", 中国铁道出版社, pages: 140 - 142 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180508 |