CN108019535A - Spool uses the two-bit triplet reversal valve of sealing cone - Google Patents
Spool uses the two-bit triplet reversal valve of sealing cone Download PDFInfo
- Publication number
- CN108019535A CN108019535A CN201810006730.0A CN201810006730A CN108019535A CN 108019535 A CN108019535 A CN 108019535A CN 201810006730 A CN201810006730 A CN 201810006730A CN 108019535 A CN108019535 A CN 108019535A
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- Prior art keywords
- hole section
- spool
- conical surface
- hole
- shaft part
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- 238000007789 sealing Methods 0.000 title claims abstract description 109
- 239000012530 fluid Substances 0.000 claims abstract description 31
- 239000003921 oil Substances 0.000 claims description 75
- 239000010720 hydraulic oil Substances 0.000 claims description 26
- 230000004323 axial length Effects 0.000 claims description 8
- 239000007769 metal material Substances 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 abstract description 7
- 238000010168 coupling process Methods 0.000 abstract description 7
- 238000005859 coupling reaction Methods 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 description 24
- 230000000694 effects Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 4
- 239000011162 core material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 206010008469 Chest discomfort Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/005—Particular materials for seats or closure elements
-
- 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
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
-
- 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
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
Abstract
The present invention uses the two-bit triplet reversal valve of sealing cone for a kind of spool, including valve body, be equipped with valve body axially through reducing axis hole, oil-feed port, control mouth and the oil return opening of perforation are arranged at intervals with the side wall of valve body, reducing axis hole interior energy releasably seals sliding sleeve and is equipped with the spool set in reducing, reducing axis hole includes sequentially the first hole section of setting, the second hole section and is equipped with first conical surface with the 3rd hole section, one end of the second hole section, and the other end of the second hole section is equipped with second conical surface；Spool includes the first shaft part, the second shaft part and the 3rd shaft part, the both ends of the second shaft part set respectively can with the first conical surface seal against having three pyramidal faces and can with the second conical surface seal against the 4th conical surface.The isolating seal of hydraulic fluid port is blocked when the valve realizes that valve position switches by the conical surface set on spool, avoids sealing ring from cutting circle damage problem, improves the service life of two-bit triplet reversal valve, while higher control hydraulic coupling can be born, is conducive to promote the use of.
Description
Technical field
The present invention relates to hydraulic system technical field, more particularly to a kind of spool to be commutated using the two-bit triplet of sealing cone
Valve.
Background technology
Two-bit triplet hydraulicdirectional control valve is one of original paper of core in hydraulic system, and it is to control leading for hydraulic oil that it, which is acted on,
Logical, cut-out and flow direction.Hydraulicdirectional control valve is classified according to maneuverability pattern, can be divided into hand, motor driven, electromagnetic type, liquid
Dynamic formula, electro-hydraulic dynamic formula.
The spool of existing two-bit triplet hydraulicdirectional control valve isolates different hydraulic fluid ports, valve position handoff procedure using rubber ring mostly
In, spool band dynamic seal ring has to pass through hydraulic fluid port, then circle certainly will be cut there are sealing ring, and (outer wall of sealing ring shows into oiler
The abbreviation of elephant) the problem of.When controlling hydraulic coupling relatively low, sealing ring deformation quantity is smaller, every time by hydraulic fluid port, cuts (the sealing of circle amount
Enclose the size into oiler) it is smaller, hydraulic fluid port end edge to sealing ring cut damage it is small；It is close when controlling hydraulic coupling higher
Seal deformation quantity is larger, every time by hydraulic fluid port, cuts that circle amount is very big, hydraulic fluid port end edge to sealing ring to cut damage big.Especially
It is super-pressure work condition environment, cuts circle and become apparent, the damage that sealing ring is cut is even more serious.With the increase of switching times,
Sealing ring cuts damage increase, and the sealing effect of sealing ring weakens, and causes the increase of reversal valve internal leakage, and final sealing ring is close
Envelope failure, can not realize that valve position switches.So the existing sealing structure using sealing ring isolation hydraulic fluid port seriously reduces reversal valve
Service life and limit control hydraulic coupling.
Thus, the present inventor relies on experience and the practice for being engaged in relevant industries for many years, proposes that a kind of spool uses sealed taper
The two-bit triplet reversal valve in face, the defects of to overcome the prior art.
The content of the invention
It is an object of the invention to provide the two-bit triplet reversal valve that a kind of spool uses sealing cone, the prior art is overcome
Present in sealing ring easily cut circle sealing effect it is poor, reversal valve service life is low, control hydraulic coupling be limited the problems such as, this two
Sealing cone is set on the spool of three-way diverter valve, the isolating seal that hydraulic fluid port is blocked during the switching of valve position is realized, is effectively prevented from close
Circle damage problem is cut in seal, improves the service life of two-bit triplet reversal valve, while can bear higher control hydraulic coupling,
Be conducive to promote the use of.
The object of the present invention is achieved like this, and a kind of spool uses the two-bit triplet reversal valve of sealing cone, including valve
Body, be equipped with the valve body axially through reducing axis hole, be arranged at intervals with the side wall of the valve body oil-feed port, control mouth and
Oil return opening, the oil-feed port, the control mouth and the oil return opening are respectively with the reducing aperture axis to perforation, the multidiameter shaft
Sliding sleeve is removedly sealed in hole and is equipped with the spool set in reducing；The reducing axis hole includes the first hole that order is set
Section, the second hole section and the 3rd hole section, first hole section connect setting, second hole section and the control with the oil-feed port
Mouthful connection is set, and the 3rd hole section connects setting with the oil return opening, and the aperture size of second hole section is more than described the
The aperture size of the aperture size of one hole section and the 3rd hole section, one end of second hole section are located at the oil-feed port and institute
Between stating control mouth, one end of second hole section is equipped with first from second hole section to the first hole section tapered diameter
The conical surface, the other end of second hole section is between the oil return opening and the control mouth, the other end of second hole section
Equipped with from second hole section to second conical surface of the 3rd hole section tapered diameter；The spool is arranged including that can seal slip
In the first shaft part in first hole section, can sliding sleeve be arranged on second hole section in the second shaft part and sliding sleeve can be sealed
The 3rd shaft part in the 3rd hole section, the outer diameter of second shaft part are less than the aperture size of second hole section
And it is more than the aperture size of first hole section and the aperture size of the 3rd hole section, the axial length of second shaft part is small
In the axial length of second hole section, the both ends of second shaft part set respectively can with first conical surface seal against
Having three pyramidal faces and can with second conical surface seal against the 4th conical surface, set and the confession on the side wall of first shaft part
First annular groove of hydraulic fluid port connection, the second annular groove connected with the oil return opening is set on the side wall of the 3rd shaft part；
The working status of the spool includes oil return state and state of a control, and the having three pyramidal faces and first conical surface are close
Envelope against isolating first annular groove and the control mouth, the control mouth by second hole section and second annular groove with
The oil return opening connection forms oil return state；4th conical surface and second conical surface seal are against isolating second annular groove
With the control mouth, the control mouth connects composition control by second hole section and first annular groove with the oil-feed port
State.
In the better embodiment of the present invention, the spool uses the two-bit triplet reversal valve of sealing cone as guide
Formula pilot operated directional control valve, the both ends of the valve body seal respectively to be connect equipped with first guide's hydraulic oil connector and second guide's hydraulic oil
Head, the first guide hydraulic oil connector is equipped with the first guide's hydraulic fluid port that can be connected with one end of the reducing axis hole, described
Second guide's hydraulic oil connector is equipped with the second guide's hydraulic fluid port that can be connected with the other end of the reducing axis hole.
In the better embodiment of the present invention, first conical surface and the tapered identical setting of the having three pyramidal faces,
Second conical surface and the tapered identical setting of the 4th conical surface.
In the better embodiment of the present invention, the axial one end of the valve body away from first hole section is removedly
Sealing shroud is equipped with shift sleeve structure, and the inner cavity of the shift sleeve structure forms the 3rd hole section, and the inner cavity of the shift sleeve structure is close
One end of first hole section sets second conical surface, set on the side wall of the shift sleeve structure can connect the oil return opening with
The oil return via of 3rd hole section.
In the better embodiment of the present invention, the axial one end of the valve body away from first hole section is set can be close
Big envelope sets the sliding sleeve mounting hole of the shift sleeve structure, and outer wall is arranged with the shift sleeve structure and is sealed against the sliding sleeve installation
Sliding sleeve sealing ring on the inner wall in hole.
In the better embodiment of the present invention, the quantity of the sliding sleeve sealing ring is two or more, the oil return
Mouth both sides are respectively provided with the sliding sleeve sealing ring.
In the better embodiment of the present invention, first shaft part is upper in the free end of first shaft part and institute
State to be arranged with to seal on the side wall between the first annular groove and slide against in the first sealing ring on the inner wall of first hole section,
It is arranged with and can seals on side wall on 3rd shaft part between the free end of the 3rd shaft part and second annular groove
Slide against in the second sealing ring on the inner wall of the 3rd hole section.
The spool can be promoted to described first by being equipped with the better embodiment of the present invention, in the 3rd hole section
The resetting spring that hole section is slided.
In the better embodiment of the present invention, the aperture size of the second guide hydraulic fluid port is less than the 3rd hole section
Aperture size, one end of the resetting spring is resisted against the end of the free end of the 3rd shaft part, the resetting spring
The other end is resisted against the second guide hydraulic oil connector on the end face of the valve body.
In the better embodiment of the present invention, the spool is metal material spool, having three pyramidal faces and described
4th conical surface is the metal material conical surface.
From the above mentioned, spool provided by the invention is had following beneficial to effect using the two-bit triplet reversal valve of sealing cone
Fruit：
(1) spool of the invention passes through what is set in spool and valve body using in the two-bit triplet reversal valve of sealing cone
The conical surface realizes the isolating seal that hydraulic fluid port is blocked during the switching of valve position, and the sealing ring for being effectively prevented from using in the prior art cuts circle damage
Hinder problem, improve the service life of two-bit triplet reversal valve；Isolating seal is carried out using the conical surface, especially suitable for high voltage control
The working condition of liquid, expands the scope of application of two-bit triplet reversal valve, is conducive to promote the use of；
(2) for spool of the invention using in the two-bit triplet reversal valve of sealing cone, be sheathed on the first shaft part first is close
Seal can avoid the conducting between the first first liquid guiding cavity and oil-feed port, and being sheathed on the second sealing ring of the second shaft part can avoid
Conducting between second first liquid guiding cavity and oil return opening, reduces leakage in valve, meanwhile, when valve position switches, the first sealing ring and second
Sealing ring is without by hydraulic fluid port, avoiding the circle of cutting of the first sealing ring and the second sealing ring from damaging, two-bit triplet being effectively ensured
The service life of reversal valve；
(3) spool of the invention is using in the two-bit triplet reversal valve of sealing cone, and spool is switched to oil return state and the
After two guide's hydraulic fluid port fuel cut-offs, spool is maintained at oil return state under the action of resetting spring, reduces hydraulic pressure energy consumption.
Brief description of the drawings
The following drawings is only intended to, in doing schematic illustration and explanation to the present invention, not delimit the scope of the invention.Wherein：
Fig. 1：Schematic diagram for spool of the invention using the two-bit triplet reversal valve of sealing cone.
Fig. 2：When being in state of a control valve position using the two-bit triplet reversal valve of sealing cone for the spool of the present invention in Fig. 1
Sectional view at A-A.
Fig. 3：When being in oil return state valve position using the two-bit triplet reversal valve of sealing cone for the spool of the present invention in Fig. 1
Sectional view at A-A.
Fig. 4：For the structure diagram of the valve body of the present invention.
Fig. 5：For the structure diagram of the spool of the present invention.
In figure：
100th, spool uses the two-bit triplet reversal valve of sealing cone；
1st, valve body；
101st, oil-feed port；102nd, control mouth；103rd, oil return opening；
11st, the first hole section；
12nd, the second hole section；121st, first conical surface；122nd, second conical surface；
13rd, the 3rd hole section；
14th, shift sleeve structure；141st, oil return via；142nd, sliding sleeve sealing ring；
2nd, first guide's hydraulic oil connector；21st, first guide's hydraulic fluid port；
3rd, second guide's hydraulic oil connector；31st, second guide's hydraulic fluid port；
4th, spool；
41st, the first shaft part；411st, the first annular groove；
42nd, the second shaft part；421st, having three pyramidal faces；422nd, the 4th conical surface；
43rd, the 3rd shaft part；431st, the second annular groove；
51st, the first sealing ring；52nd, the second sealing ring；53rd, the 3rd sealing ring；54th, the 4th sealing ring；
6th, resetting spring.
Embodiment
In order to which the technical features, objects and effects of the present invention are more clearly understood, now control illustrates this hair
Bright embodiment.
As shown in Figures 1 to 5, the present invention provides the two-bit triplet reversal valve 100 that a kind of spool uses sealing cone, including
Valve body 1, be equipped with valve body 1 axially through reducing axis hole, be arranged at intervals with oil-feed port 101, control mouth on the side wall of valve body 1
102 and oil return opening 103, oil-feed port 101, control mouth 102 and oil return opening 103 are respectively with reducing aperture axis to perforation, reducing axis hole
Inside removedly seal sliding sleeve and be equipped with the spool 4 set in reducing, reducing axis hole includes the first hole section 11 that order sets, the
Two hole sections 12 and the 3rd hole section 13, the first hole section 11 connect setting with oil-feed port 101, and the second hole section 12 is connected with control mouth 102
Set, the 3rd hole section 13 connects setting with oil return opening 103, and the aperture size D2 of the second hole section 12 is more than the aperture of the first hole section 11
The aperture size D3 of 1 and the 3rd hole section 13 of dimension D, one end of the second hole section 12 between oil-feed port 101 and control mouth 102,
One end of second hole section 12 is equipped with first conical surface 121 from the second hole section 12 to 11 tapered diameter of the first hole section, the second hole section 12
The other end between oil return opening 103 and control mouth 102, the other end of the second hole section 12 is equipped with from the second hole section 12 to the 3rd
13 tapered diameter of hole section is equipped with second conical surface 122；Spool 4 includes that first axle of the sliding sleeve in the first hole section 11 can be sealed
The second shaft part 42 and the 3rd of sliding sleeve in the 3rd hole section 13 can be sealed that section 41, energy sliding sleeve are arranged in the second hole section 12
Shaft part 43, the outer diameter D4 of the second shaft part 42 are less than the aperture size D2 of the second hole section 12 and more than the aperture ruler of the first hole section
The aperture size D3 of very little D1 and the 3rd hole section, the axial length L 1 of the second shaft part 42 are less than the axial length L 2 of the second hole section 12,
The both ends of second shaft part 42 set the having three pyramidal faces 421 that can be sealed against with first conical surface 121 and can be with second conical surfaces 122 respectively
The 4th conical surface 422 being sealed against, sets the first annular groove 411 connected with oil-feed port 101 on the side wall of the first shaft part 41, and the 3rd
The second annular groove 431 connected with oil return opening 103 is set on the side wall of shaft part 43, and the axial length of the first annular groove 411 needs to meet
The requirement that first annular groove 411 is connected with oil-feed port 101 all the time, the axial length of the second annular groove 431 need to meet the second annular groove 431
All the time the requirement connected with oil return opening 103；
The working status of spool 4 includes oil return state and state of a control, and having three pyramidal faces 421 are supported with the sealing of first conical surface 121
By the first annular groove of isolation 411 and control mouth 102, control mouth 102 passes through the second hole section 12 and the second annular groove 431 and oil return opening 103
Connection forms oil return state；4th conical surface 422 is sealed against isolating the second annular groove 431 and control mouth 102 with second conical surface 122,
Control mouth 102 is connected by the second hole section 12 and the first annular groove 411 with oil-feed port 101 forms state of a control.
The spool of the present invention passes through what is set in spool and valve body using in the two-bit triplet reversal valve 100 of sealing cone
The conical surface realizes the isolating seal that hydraulic fluid port is blocked during the switching of valve position, and the sealing ring for being effectively prevented from using in the prior art cuts circle damage
Hinder problem, improve the service life of two-bit triplet reversal valve；Isolating seal is carried out using the conical surface, especially suitable for high voltage control
The working condition of liquid, expands the scope of application of two-bit triplet reversal valve, is conducive to promote the use of.
Further, spool uses the two-bit triplet reversal valve 100 of sealing cone as pilot-operated type pilot operated directional control valve, valve body 1
Both ends are sealed equipped with first guide's hydraulic oil connector 2 and second guide's hydraulic oil connector 3, first guide's hydraulic oil connector 2 respectively
The first guide's hydraulic fluid port 21 that can be connected with one end of reducing axis hole is equipped with, second guide's hydraulic oil connector 3 is equipped with can be with change
Second guide's hydraulic fluid port 31 of the other end connection of footpath axis hole.The spool of the present invention uses the two-bit triplet reversal valve of sealing cone
100 can also be electromagnetic type or hand reversal valve, and the 3rd hole section 13 needs to connect setting with oil return opening 103 at this time, with satisfaction
Spool 4, which slides, needs (prior art, details are not described herein again).
Further, first conical surface 121 and the tapered identical setting of having three pyramidal faces 421, second conical surface 122 and the 4th conical surface
422 tapered identical settings.When first conical surface 121 is with 421 tapered identical setting of having three pyramidal faces, energy when the two is abutted
Enough realize that face seals, there is preferable sealing effect；When second conical surface 122 is with the 4th 422 tapered identical setting of the conical surface, two
Person can realize that face seals when abutting, have preferable sealing effect.First conical surface 121 and having three pyramidal faces 421 can also
Set in different tapers, what is formed when the two is abutted is linear sealing；Second conical surface 122 can also be in the 4th conical surface 422
Different tapers are set, and what is formed when the two is abutted is linear sealing.
Further, as shown in Figure 2, Figure 3, Figure 4, the axial one end of valve body 1 away from the first hole section 11 removedly sealing shroud
Equipped with shift sleeve structure 14, the inner cavity of shift sleeve structure 14 forms the 3rd foregoing hole section 13, and the inner cavity of shift sleeve structure 14 is close to first
One end of hole section 11 sets the second foregoing conical surface 122, and oil return opening 103 and the 3rd can be connected by being set on the side wall of shift sleeve structure 14
The oil return via 141 of hole section 13.Shift sleeve structure 14 is removedly installed in valve body 1, meets the installation requirement of spool 4.
Further, as shown in Figure 2, Figure 3, Figure 4, the axial one end of valve body 1 away from the first hole section 11, which sets to seal, is arranged
The sliding sleeve mounting hole of shift sleeve structure 14, is arranged with the cunning that outer wall is sealed against on the inner wall of sliding sleeve mounting hole on shift sleeve structure 14
Cover sealing ring 142.In the present embodiment, the quantity of sliding sleeve sealing ring 142 is two or more that the both sides of oil return opening 103 are equal
Sliding sleeve sealing ring 142 is set, sliding sleeve sealing ring 142 for dual redundant structure or triple redundance structure (set on shift sleeve structure 14 2 or
The accommodating conduit of 3 sliding sleeve sealing rings 142).The sliding sleeve sealing ring 142 being arranged between 103 and second hole section 12 of oil return opening, energy
Conducting when enough avoiding the spool 4 from being located at state of a control between oil return opening and control mouth, reduces leakage in valve.
Further, as shown in Fig. 2, Fig. 3, Fig. 5, positioned at the free end of first axle section 41 and the first annular groove on the first shaft part 41
It is arranged with to seal on side wall between 411 and slides against in the first sealing ring 51 on the inner wall of the first hole section 11, the 3rd axis
It is arranged with to seal on side wall in section 43 between the free end of the 3rd shaft part 43 and the second annular groove 431 and slides against in the
The second sealing ring 52 on the inner wall of three hole sections 13.In the present embodiment, the first sealing ring 51 and the second sealing ring 52 are double
Redundancy structure or triple redundance structure (set the accommodating conduit of 2 or 3 the first sealing rings 51, the 3rd shaft part on the first shaft part 41
The accommodating conduit of 2 or 3 the second sealing rings 52 is set on 43).In first hole section 11 positioned at the free end of the first shaft part 41 with
The first first liquid guiding cavity is formed between one end of the valve body, is located at the free end of the 3rd shaft part 43 and the valve in the 3rd hole section 13
The second first liquid guiding cavity is formed between the other end of body, the first sealing ring 51 can be avoided between the first first liquid guiding cavity and oil-feed port
Conducting, the second sealing ring 52 can avoid the conducting between the second first liquid guiding cavity and oil return opening, reduce leakage in valve.Meanwhile valve
During the switching of position, the first sealing ring 51 and the second sealing ring 52 are without by hydraulic fluid port, avoiding the first sealing ring 51 and the second sealing
Circle 52 cuts circle damage, and the service life of two-bit triplet reversal valve has been effectively ensured.
Further, as shown in Figure 2, Figure 3, Figure 4, being equipped with the 3rd hole section 13 can promote spool 4 to be slided to the first hole section 11
Resetting spring 6.After spool 4 is switched to oil return state and second guide's hydraulic fluid port, 31 fuel cut-off, spool 4 is in resetting spring 6
Oil return state (also can at this time state be referred to as reset state) is maintained under effect, reduces hydraulic pressure energy consumption.In the present embodiment,
The aperture size D5 of second guide's hydraulic fluid port 31 is less than the aperture size D3 of the 3rd hole section 13, and one end of resetting spring 6 is resisted against the
The end of the free end of three shaft parts 43, the other end of resetting spring 6 are resisted against second guide's hydraulic oil connector 3 close to valve body 1
On end face.In the present invention, under conditions of given control hydraulic coupling, the resetting spring 6 and guide's oil pressure of suitable dimension are designed
Power, on the one hand ensures under state of a control, in the first first liquid guiding cavity under lasting guide oil effect, the 4th conical surface 422 and second
The conical surface 122 is sealed against, and is on the other hand ensured under oil return state, and having three pyramidal faces 421 and first are bored under the action of resetting spring 6
Face 121 is sealed against.
Further, as shown in Fig. 2, Fig. 3, Fig. 5, the first annular groove 411 is disposed adjacent with having three pyramidal faces 421, the second annular groove 431
It is disposed adjacent with the 4th conical surface 422.First annular groove 411 can also be set with having three pyramidal faces 421 in axially spaced-apart, but the two it
Between axially spaced-apart distance must assure that when 421 and first conical surface 121 of having three pyramidal faces is sealed against (i.e. oil return state), control
Mouth 102 is connected by the second hole section 12 and the second annular groove 431 with oil return opening 103；Second annular groove 431 can also be with the 4th conical surface
422 are set in axially spaced-apart, but axially spaced-apart distance therebetween must assure that in the 4th conical surface 422 and second conical surface
122 when being sealed against (i.e. state of a control), and control mouth 102 is connected by the second hole section 12 and the first annular groove 411 with oil-feed port 101
It is logical.
Further, as shown in Figure 2 and Figure 3, in order to ensure connect closed type, the end face of first guide's hydraulic oil connector 2 with
3rd sealing ring 53, the end face of second guide's hydraulic oil connector 3 and the other end of valve body 1 are set between the end face of valve body 1
4th sealing ring 54 is set between face.
Further, spool 4 is metal material spool, and 421 and the 4th conical surface 422 of having three pyramidal faces is the metal material conical surface.Valve
Core 4 can also use other hydraulic valve core materials, such as nylon etc..
When the spool of the assembling present invention uses the two-bit triplet reversal valve 100 of sealing cone, first by spool 4 from sliding sleeve knot
One end of structure mounting hole is worn into valve body 1, and shift sleeve structure 14 is sealingly mounted in shift sleeve structure mounting hole afterwards, will be multiple
Position spring loads in the 3rd hole section 13, finally carries out first guide's hydraulic oil connector 2 and second guide's hydraulic oil at 1 both ends of valve body
The sealed connection of connector 3.
As shown in Figure 2 and Figure 3, there are state of a control using the two-bit triplet reversal valve 100 of sealing cone for spool of the invention
Valve position and oil return state valve position, when spool 4 switches to state of a control by oil return state, stop at second guide's hydraulic oil connector 3
Only after guide oil supply, the second first liquid guiding cavity forms low pressure chamber (low compared to the pressure in the first first liquid guiding cavity), the first guide
Guide oil is supplied at hydraulic oil connector 2, the first first liquid guiding cavity forms high pressure chest (high compared to the pressure in the second first liquid guiding cavity),
Guide oil in first first liquid guiding cavity promotes spool 4 to be moved to the direction of the 3rd hole section 13, and the decrement of resetting spring 6 increases at this time
Add, the guide oil in the second first liquid guiding cavity flows out valve body 1 via second guide's hydraulic fluid port 31, when the 4th conical surface 422 and second conical surface
122 it is sealed against that (in 4 moving process of spool, oil-feed port 101, control mouth 102 and oil return opening 103 are led there are three mouthfuls of moment
Logical, which does not interfere with the normal use of two-bit triplet reversal valve, belongs to conventional phenomenon existing in the prior art) when, control
Donsole 102 is connected by the second hole section 12 and the first annular groove 411 with oil-feed port 101, and oil return opening 103 is closed.In the first first drain
Under the action of the guide oil of intracavitary, the 4th conical surface 422 and second conical surface, 122 tight abutment form conical surface seal, in the first guide
In sap cavity under the effect of lasting guide oil, spool 4 is in state of a control.
Stop guide oil when spool 4 switches to oil return state by state of a control, at first guide's hydraulic oil connector 2 to supply
Give, the first first liquid guiding cavity formation low pressure chamber (low compared to the pressure in the first first liquid guiding cavity), at second guide's hydraulic oil connector 3
Guide oil is supplied, the second first liquid guiding cavity forms high pressure chest (high compared to the pressure in the second first liquid guiding cavity), the second first liquid guiding cavity
Interior guide oil promotes spool 4 to be moved to the direction of the first hole section 11, and the decrement of resetting spring 6 reduces at this time, the first guide
Guide oil in sap cavity flows out valve body 1 via first guide's hydraulic fluid port 21, when having three pyramidal faces 421 and first conical surface 121 are sealed against
(in 4 moving process of spool, oil-feed port 101, control mouth 102 and oil return opening 103 are there are three mouthfuls of conductings of moment, and the phenomenon is not
The normal use of two-bit triplet reversal valve can be influenced, belongs to conventional phenomenon existing in the prior art) when, control mouth 102 passes through
Second hole section 12 and the second annular groove 431 are connected with oil return opening 103, and oil-feed port 101 is closed.421 and first conical surface 121 of having three pyramidal faces
Tight abutment forms conical surface seal, stops guide oil supply, work of the spool 4 in resetting spring 6 at second guide's hydraulic oil connector 3
Oil return state is maintained under.
From the above mentioned, spool provided by the invention is had following beneficial to effect using the two-bit triplet reversal valve of sealing cone
Fruit：
(1) spool of the invention passes through what is set in spool and valve body using in the two-bit triplet reversal valve of sealing cone
The conical surface realizes the isolating seal that hydraulic fluid port is blocked during the switching of valve position, and the sealing ring for being effectively prevented from using in the prior art cuts circle damage
Hinder problem, improve the service life of two-bit triplet reversal valve；Isolating seal is carried out using the conical surface, especially suitable for high voltage control
The working condition of liquid, expands the scope of application of two-bit triplet reversal valve, is conducive to promote the use of；
(2) for spool of the invention using in the two-bit triplet reversal valve of sealing cone, be sheathed on the first shaft part first is close
Seal can avoid the conducting between the first first liquid guiding cavity and oil-feed port, and being sheathed on the second sealing ring of the second shaft part can avoid
Conducting between second first liquid guiding cavity and oil return opening, reduces leakage in valve, meanwhile, when valve position switches, the first sealing ring and second
Sealing ring is without by hydraulic fluid port, avoiding the circle of cutting of the first sealing ring and the second sealing ring from damaging, two-bit triplet being effectively ensured
The service life of reversal valve；
(3) spool of the invention is using in the two-bit triplet reversal valve of sealing cone, and spool is switched to oil return state and the
After two guide's hydraulic fluid port fuel cut-offs, spool is maintained at oil return state under the action of resetting spring, reduces hydraulic pressure energy consumption.
The foregoing is merely the schematical embodiment of the present invention, the scope of the present invention is not limited to.It is any
Those skilled in the art, made equivalent variations and modification on the premise of the design of the present invention and principle is not departed from,
The scope of protection of the invention should be belonged to.
Claims (10)
1. a kind of spool uses the two-bit triplet reversal valve of sealing cone, including valve body, it is characterised in that is equipped with the valve body
Axially through reducing axis hole, be arranged at intervals with oil-feed port, control mouth and oil return opening, the fuel feeding on the side wall of the valve body
Mouth, the control mouth and the oil return opening are releasably close to perforation, the reducing axis hole interior energy with the reducing aperture axis respectively
Seal sliding sleeve and be equipped with the spool set in reducing；The reducing axis hole includes the first hole section, the second hole section and that order is set
Three hole sections, first hole section connect setting with the oil-feed port, and second hole section connects setting with the control mouth, described
3rd hole section connects setting with the oil return opening, and the aperture size of second hole section is more than the aperture size of first hole section
With the aperture size of the 3rd hole section, one end of second hole section is between the oil-feed port and the control mouth, institute
The one end for stating the second hole section is equipped with from second hole section to first conical surface of the first hole section tapered diameter, second hole
Between the oil return opening and the control mouth, the other end of second hole section is equipped with from second hole other end of section
Second conical surface of the section to the 3rd hole section tapered diameter；The spool includes sealing sliding sleeve in first hole section
The first shaft part, the second shaft part for being arranged in second hole section of sliding sleeve and can seal sliding sleeve and be arranged on the 3rd hole section
The 3rd interior shaft part, the outer diameter of second shaft part are less than the aperture size of second hole section and are more than first hole
The aperture size of section and the aperture size of the 3rd hole section, the axial length of second shaft part are less than second hole section
Axial length, the both ends of second shaft part set respectively can with first conical surface seal against having three pyramidal faces and can be with institute
State the second conical surface seal against the 4th conical surface, the first ring connected with the oil-feed port is set on the side wall of first shaft part
Groove, the second annular groove connected with the oil return opening is set on the side wall of the 3rd shaft part；
The working status of the spool includes oil return state and state of a control, and the having three pyramidal faces are supported with first conical surface seal
By isolating first annular groove and the control mouth, the control mouth by second hole section and second annular groove with it is described
Oil return opening connection forms oil return state；4th conical surface and second conical surface seal are against isolating second annular groove and institute
Control mouth is stated, the control mouth connects composition control shape by second hole section and first annular groove with the oil-feed port
State.
2. spool as claimed in claim 1 uses the two-bit triplet reversal valve of sealing cone, it is characterised in that the spool is adopted
It is pilot-operated type pilot operated directional control valve with the two-bit triplet reversal valve of sealing cone, the both ends of the valve body are sealed equipped with first first respectively
Drain pressure oil connector and second guide's hydraulic oil connector, the first guide hydraulic oil connector is equipped with can be with the reducing axis hole
One end connection first guide's hydraulic fluid port, the second guide hydraulic oil connector be equipped with can be with the other end of the reducing axis hole
Second guide's hydraulic fluid port of connection.
3. spool as claimed in claim 1 uses the two-bit triplet reversal valve of sealing cone, it is characterised in that first cone
Face and the tapered identical setting of the having three pyramidal faces, second conical surface and the tapered identical setting of the 4th conical surface.
4. such as claim 1,2 or 3 any one of them spools use the two-bit triplet reversal valve of sealing cone, its feature exists
In removedly sealing shroud is equipped with shift sleeve structure, the shift sleeve structure for the axial one end of the valve body away from first hole section
Inner cavity form the 3rd hole section, the inner cavity of the shift sleeve structure sets second cone close to one end of first hole section
Face, the oil return opening and the oil return via of the 3rd hole section can be connected by setting on the side wall of the shift sleeve structure.
5. spool as claimed in claim 4 uses the two-bit triplet reversal valve of sealing cone, it is characterised in that the valve body is remote
Axial one end from first hole section sets to seal and is arranged the sliding sleeve mounting hole of the shift sleeve structure, on the shift sleeve structure
It is arranged with the sliding sleeve sealing ring that outer wall is sealed against on the inner wall of the sliding sleeve mounting hole.
6. spool as claimed in claim 5 uses the two-bit triplet reversal valve of sealing cone, it is characterised in that the sliding sleeve is close
The quantity of seal is two or more, and the oil return opening both sides are respectively provided with the sliding sleeve sealing ring.
7. such as claim 1,2 or 3 any one of them spools use the two-bit triplet reversal valve of sealing cone, its feature exists
In being arranged with the upper side wall between the free end of first shaft part and first annular groove of first shaft part can be close
Envelope is slid against in being located at the 3rd shaft part on the first sealing ring on the inner wall of first hole section, the 3rd shaft part
It is arranged with to seal on side wall between free end and second annular groove and slides against on the inner wall of the 3rd hole section
Second sealing ring.
8. spool as claimed in claim 2 uses the two-bit triplet reversal valve of sealing cone, it is characterised in that the 3rd hole
The resetting spring that the spool is slided to first hole section can be promoted by being equipped with section.
9. spool as claimed in claim 8 uses the two-bit triplet reversal valve of sealing cone, it is characterised in that described second first
The aperture size of oil diverting port is less than the aperture size of the 3rd hole section, and one end of the resetting spring is resisted against the 3rd axis
The end of the free end of section, the other end of the resetting spring are resisted against the second guide hydraulic oil connector close to the valve body
End face on.
10. such as claim 1,2 or 3 any one of them spools use the two-bit triplet reversal valve of sealing cone, its feature exists
In the spool is metal material spool, and the having three pyramidal faces and the 4th conical surface are the metal material conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006730.0A CN108019535B (en) | 2018-01-04 | 2018-01-04 | Two-position three-way reversing valve with valve core adopting sealing conical surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006730.0A CN108019535B (en) | 2018-01-04 | 2018-01-04 | Two-position three-way reversing valve with valve core adopting sealing conical surface |
Publications (2)
| Publication Number | Publication Date |
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| CN108019535A true CN108019535A (en) | 2018-05-11 |
| CN108019535B CN108019535B (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810006730.0A Active CN108019535B (en) | 2018-01-04 | 2018-01-04 | Two-position three-way reversing valve with valve core adopting sealing conical surface |
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Cited By (6)
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| WO2020200266A1 (en) * | 2019-04-02 | 2020-10-08 | 浙江三花制冷集团有限公司 | Electric valve |
| CN111852976A (en) * | 2020-07-16 | 2020-10-30 | 中国石油大学(北京) | Two-position three-way hydraulic change valve |
| CN112555218A (en) * | 2020-12-18 | 2021-03-26 | 涌镇液压机械（上海）有限公司 | Valve body structure of reversing valve |
| KR20210096676A (en) * | 2019-04-02 | 2021-08-05 | 저장 산후아 클라이메이트 앤드 어플라이언스 컨트롤스 그룹 컴퍼니 리미티드 | electric valve |
| CN113338790A (en) * | 2021-06-29 | 2021-09-03 | 山河智能装备股份有限公司 | Reversing valve of hydraulic rock drill |
| WO2024148674A1 (en) * | 2023-01-12 | 2024-07-18 | 娄底市中兴液压件有限公司 | Oil tanker truck and subsea valve thereof |
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| WO2020200266A1 (en) * | 2019-04-02 | 2020-10-08 | 浙江三花制冷集团有限公司 | Electric valve |
| KR20210096676A (en) * | 2019-04-02 | 2021-08-05 | 저장 산후아 클라이메이트 앤드 어플라이언스 컨트롤스 그룹 컴퍼니 리미티드 | electric valve |
| KR102535388B1 (en) | 2019-04-02 | 2023-05-26 | 저장 산후아 클라이메이트 앤드 어플라이언스 컨트롤스 그룹 컴퍼니 리미티드 | electric valve |
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| CN112555218B (en) * | 2020-12-18 | 2024-05-17 | 涌镇液压机械（上海）有限公司 | Valve body structure of reversing valve |
| CN113338790A (en) * | 2021-06-29 | 2021-09-03 | 山河智能装备股份有限公司 | Reversing valve of hydraulic rock drill |
| CN113338790B (en) * | 2021-06-29 | 2024-01-30 | 山河智能装备股份有限公司 | Reversing valve of hydraulic rock drill |
| WO2024148674A1 (en) * | 2023-01-12 | 2024-07-18 | 娄底市中兴液压件有限公司 | Oil tanker truck and subsea valve thereof |
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