CN207701829U - 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
- CN207701829U CN207701829U CN201820011937.2U CN201820011937U CN207701829U CN 207701829 U CN207701829 U CN 207701829U CN 201820011937 U CN201820011937 U CN 201820011937U CN 207701829 U CN207701829 U CN 207701829U
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- hole section
- conical surface
- spool
- hole
- shaft part
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- 238000007789 sealing Methods 0.000 title claims abstract description 111
- 239000012530 fluid Substances 0.000 claims abstract description 30
- 239000003921 oil Substances 0.000 claims description 76
- 239000010720 hydraulic oil Substances 0.000 claims description 25
- 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 6
- 238000010168 coupling process Methods 0.000 abstract description 6
- 238000005859 coupling reaction Methods 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 description 27
- 230000000694 effects Effects 0.000 description 11
- 239000011162 core material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process 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
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
Abstract
The utility model is the two-bit triplet reversal valve that a kind of spool uses sealing cone, including valve body, be equipped in valve body axially through reducing axis hole, oil-feed port, control mouth and the oil return opening of perforation are arranged at intervals on the side wall of valve body, reducing axis hole interior energy releasably seals sliding sleeve and is equipped with the spool being arranged in reducing, reducing axis hole include the first hole section of sequence setting, the second hole section and with third hole section, one end of the second hole section is equipped with first conical surface, 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 third shaft part, the both ends of the second shaft part be respectively set can with the first conical surface seal against the third conical surface and can with the second conical surface seal against the 4th conical surface.The valve realizes the isolating seal that hydraulic fluid port is blocked when the switching of valve position by the conical surface being arranged on spool, avoids sealing ring from cutting circle damage problem, improves the service life of two-bit triplet reversal valve, while can bear higher control hydraulic coupling, is conducive to promote the use of.
Description
Technical field
The utility model is related to the two-bit triplets that hydraulic system technical field more particularly to a kind of spool use sealing cone
Reversal valve.
Background technology
Two-bit triplet hydraulicdirectional control valve is one of the original paper of core in hydraulic system, and effect is to control leading for hydraulic oil
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 mostly uses greatly rubber ring and different hydraulic fluid ports, valve position handoff procedure is isolated
In, spool band dynamic seal ring has to pass through hydraulic fluid port, cuts circle then certainly will have sealing ring (outer wall of sealing ring shows into oiler
The abbreviation of elephant) the problem of.When control hydraulic coupling is relatively low, sealing ring deformation quantity is smaller, passes through hydraulic fluid port every time, 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 control hydraulic coupling is higher
Seal deformation quantity is larger, passes through hydraulic fluid port every time, 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,
The damage that cuts of sealing ring increases, and the sealing effect of sealing ring weakens, and reversal valve internal leakage is caused to increase, and final sealing ring is close
Envelope failure cannot achieve the switching of valve position.So the existing sealing structure that hydraulic fluid port is isolated using sealing ring seriously reduces reversal valve
Service life and limit control hydraulic coupling.
The present inventor relies on experience and the practice for being engaged in relevant industries for many years as a result, proposes that a kind of spool uses sealed taper
The two-bit triplet reversal valve in face, to overcome the deficiencies of existing technologies.
Utility model content
The purpose of this utility model is to provide the two-bit triplet reversal valves that a kind of spool uses sealing cone, overcome existing
Sealing ring present in technology easily cuts the problems such as circle sealing effect is poor, reversal valve service life is low, control hydraulic coupling is limited, should
Sealing cone is set on the spool of two-bit triplet reversal valve, realizes the isolating seal for blocking hydraulic fluid port when the switching of valve position, effectively keeps away
Exempt from sealing ring and cut circle damage problem, improve the service life of two-bit triplet reversal valve, while higher control liquid can be born
Pressure is conducive to promote the use of.
The purpose of this utility model is achieved in that a kind of spool uses the two-bit triplet reversal valve of sealing cone, packet
Include valve body, be equipped in the valve body axially through reducing axis hole, be arranged at intervals with oil-feed port, control on the side wall of the valve body
Mouthful 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 change
Diameter axis hole interior energy releasably seals sliding sleeve and is equipped with the spool being arranged in reducing；The reducing axis hole includes the first of sequence setting
Hole section, the second hole section and third hole section, first hole section are connected to setting, second hole section and the control with the oil-feed port
Donsole connection setting, the third hole section are connected to setting with the oil return opening, and the aperture size of second hole section is more than described
The aperture size of the aperture size of first hole section and the third hole section, one end of second hole section be located at the oil-feed port and
Between the control mouth, one end of second hole section is equipped with the from second hole section to the first hole section tapered diameter
One conical surface, the other end of second hole section between the oil return opening and the control mouth, second hole section it is another
End is equipped with from second hole section to second conical surface of the third hole section tapered diameter；The spool includes that can seal sliding sleeve
The second shaft part and sliding can be sealed that the first shaft part, energy sliding sleeve in first hole section are set in second hole section
The third shaft part being sheathed in the third hole section, the outer diameter of second shaft part are less than the aperture ruler of second hole section
The aperture size of aperture size and the third hole section very little and more than first hole section, the axial length of second shaft part
Less than the axial length of second hole section, the both ends of second shaft part be respectively set can with first conical surface seal against
The third conical surface and can with second conical surface seal against the 4th conical surface, on the side wall of first shaft part setting with it is described
First annular groove of oil-feed port connection, the second annular groove being connected to the oil return opening is arranged on the side wall of the third shaft part；
The working condition of the spool includes oil return state and state of a control, and the third conical surface and first conical surface are close
Envelope against being isolated first annular groove and the control mouth, the control mouth by second hole section and second annular groove with
The oil return opening connection constitutes oil return state；4th conical surface and second conical surface seal are against being isolated second annular groove
With the control mouth, the control mouth is connected to composition control by second hole section and first annular groove with the oil-feed port
State.
In a better embodiment of the utility model, the spool use the two-bit triplet reversal valve of sealing cone for
Pilot-operated type pilot operated directional control valve, the both ends of the valve body seal respectively is equipped with first guide's hydraulic oil connector and second guide's hydraulic oil
Connector, the first guide hydraulic oil connector are equipped with the first guide's hydraulic fluid port that can be connected to one end of the reducing axis hole, institute
It states second guide's hydraulic oil connector and is equipped with the second guide's hydraulic fluid port that can be connected to the other end of the reducing axis hole.
In a better embodiment of the utility model, first conical surface and the third conical surface are tapered identical to be set
It sets, second conical surface and the tapered identical setting of the 4th conical surface.
In a better embodiment of the utility model, the axial one end of the valve body far from first hole section can be torn open
It unloads ground sealing shroud and is equipped with shift sleeve structure, the inner cavity of the shift sleeve structure constitutes the third hole section, the inner cavity of the shift sleeve structure
Second conical surface is set close to one end of first hole section, the oil return can be connected to by being arranged on the side wall of the shift sleeve structure
The oil return via of mouth and the third hole section.
In a better embodiment of the utility model, axial one end setting of the valve body far from first hole section
The sliding sleeve mounting hole for being arranged the shift sleeve structure can be sealed, being arranged with outer wall on the shift sleeve structure is sealed against the sliding sleeve
Sliding sleeve sealing ring on the inner wall of mounting hole.
In a better embodiment of the utility model, the quantity of the sliding sleeve sealing ring be it is two or more, it is described
Oil return opening both sides are respectively provided with the sliding sleeve sealing ring.
In a better embodiment of the utility model, first shaft part is upper in the free end of first shaft part
Be arranged on side wall between first annular groove can seal slide against it is close in first on the inner wall of first hole section
Seal is located on the third shaft part on the side wall between the free end and second annular groove of the third shaft part and is arranged with energy
Sealing slides against in the second sealing ring on the inner wall of the third hole section.
Being equipped in a better embodiment of the utility model, in the third hole section can push the spool to described
The resetting spring of first hole section sliding.
In a better embodiment of the utility model, the aperture size of the second guide hydraulic fluid port is less than the third
The aperture size of hole section, one end of the resetting spring are resisted against the end of the free end of the third shaft part, the reset bullet
The other end of spring is resisted against the second guide hydraulic oil connector on the end face of the valve body.
In a better embodiment of the utility model, the spool be metal material spool, the third conical surface and
4th conical surface is the metal material conical surface.
From the above mentioned, spool provided by the utility model is had following beneficial using the two-bit triplet reversal valve of sealing cone
Effect：
(1) spool of the utility model using sealing cone two-bit triplet reversal valve in, by being set in spool and valve body
The conical surface set realizes the isolating seal that hydraulic fluid port is blocked when the switching of valve position, is effectively prevented from cutting for the sealing ring used in the prior art
Damage problem is enclosed, the service life of two-bit triplet reversal valve is improved；Isolating seal is carried out using the conical surface, especially suitable for high pressure
The working condition for controlling liquid, expands the scope of application of two-bit triplet reversal valve, is conducive to promote the use of；
(2) spool of the utility model is sheathed on the of the first shaft part using in the two-bit triplet reversal valve of sealing cone
One sealing ring can avoid the conducting between the first first liquid guiding cavity and oil-feed port, and the second sealing ring for being sheathed on the second shaft part can
Avoid the conducting between the second first liquid guiding cavity and oil return opening, reduce leakage in valve, meanwhile, when valve position switches, the first sealing ring and
Second sealing ring is not necessarily to that the circle of cutting of the first sealing ring and the second sealing ring is avoided to damage by hydraulic fluid port, has been effectively ensured two
The service life of three-way diverter valve；
(3) for the spool of the utility model using in the two-bit triplet reversal valve of sealing cone, spool is switched to oil return state
And second after guide's hydraulic fluid port fuel cut-off, spool is maintained at oil return state under the action of resetting spring, reduces hydraulic pressure energy consumption.
Description of the drawings
The following drawings is only intended in doing schematic illustration and explanation to the utility model, does not limit the model of the utility model
It encloses.Wherein：
Fig. 1：For the utility model spool using sealing cone two-bit triplet reversal valve schematic diagram.
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 utility model
Sectional view in Fig. 1 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 utility model
Sectional view in Fig. 1 at A-A.
Fig. 4：For the structural schematic diagram of the valve body of the utility model.
Fig. 5：For the structural schematic diagram of the spool of the utility model.
In figure：
100, spool uses the two-bit triplet reversal valve of sealing cone；
1, valve body；
101, oil-feed port；102, control mouth；103, oil return opening；
11, the first hole section；
12, the second hole section；121, first conical surface；122, second conical surface；
13, third hole section；
14, shift sleeve structure；141, oil return via；142, sliding sleeve sealing ring；
2, first guide's hydraulic oil connector；21, first guide's hydraulic fluid port；
3, second guide's hydraulic oil connector；31, second guide's hydraulic fluid port；
4, spool；
41, the first shaft part；411, the first annular groove；
42, the second shaft part；421, the third conical surface；422, the 4th conical surface；
43, third shaft part；431, the second annular groove；
51, the first sealing ring；52, the second sealing ring；53, third sealing ring；54, the 4th sealing ring；
6, resetting spring.
Specific implementation mode
For a clearer understanding of the technical features, objectives and effects of the utility model, existing control description of the drawings
Specific embodiment of the present utility model.
As shown in Figures 1 to 5, the utility model provides the two-bit triplet reversal valve 100 that a kind of spool uses sealing cone,
Be equipped with including valve body 1, in valve body 1 axially through reducing axis hole, be arranged at intervals with oil-feed port 101, control on the side wall of valve body 1
Mouthfuls 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, multidiameter shaft
Removedly sealed in hole sliding sleeve be equipped in reducing setting spool 4, reducing axis hole include sequence setting the first hole section 11,
Second hole section 12 and third hole section 13, the first hole section 11 are connected to setting with oil-feed port 101, and the second hole section 12 connects with control mouth 102
Logical setting, third hole section 13 are connected to setting with oil return opening 103, and the aperture size D2 of the second hole section 12 is more than the hole of the first hole section 11
The aperture size D3 of diameter dimension D 1 and third hole section 13, one end of the second hole section 12 be located at oil-feed port 101 and control mouth 102 it
Between, one end of the 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
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 12 other end
Three hole sections, 13 tapered diameter is equipped with second conical surface 122；Spool 4 includes first that can seal sliding sleeve and be set in the first hole section 11
Shaft part 41 the second shaft part 42 for being set in the second hole section 12 of sliding sleeve and can seal the of sliding sleeve in the third hole section 13
The outer diameter D4 of three shaft parts 43, the second shaft part 42 is less than the aperture size D2 of the second hole section 12 and the aperture more than the first hole section
The aperture size D3 of dimension D 1 and third hole section, the axial length L 1 of the second shaft part 42 are less than the axial length of the second hole section 12
The both ends of L2, the second shaft part 42 are respectively set the third conical surface 421 that can be sealed against with first conical surface 121 and can be with second conical surfaces
The first annular groove 411 being connected to oil-feed port 101 is arranged on the side wall of the first shaft part 41 for 122 the 4th conical surfaces 422 being sealed against,
The second annular groove 431 being connected to oil return opening 103 is set on the side wall of third shaft part 43, and the axial length of the first annular groove 411 needs
Meet the requirement that the first annular groove 411 is connected to oil-feed port 101 always, the axial length of the second annular groove 431 needs to meet the second ring
The requirement that slot 431 is connected to oil return opening 103 always；
The working condition of spool 4 includes oil return state and state of a control, and the third conical surface 421 is 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 constitutes oil return state；4th conical surface 422 is sealed against with second conical surface 122 is isolated the second annular groove 431 and control mouth 102,
Control mouth 102, which is connected to by the second hole section 12 and the first annular groove 411 with oil-feed port 101, constitutes state of a control.
The spool of the utility model uses in the two-bit triplet reversal valve 100 of sealing cone, by being set in spool and valve body
The conical surface set realizes the isolating seal that hydraulic fluid port is blocked when the switching of valve position, is effectively prevented from cutting for the sealing ring used in the prior art
Damage problem is enclosed, the service life of two-bit triplet reversal valve is improved；Isolating seal is carried out using the conical surface, especially suitable for high pressure
The working condition for controlling 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 for pilot-operated type pilot operated directional control valve, valve body 1
Both ends seal respectively is equipped with first guide's hydraulic oil connector 2 and second guide's hydraulic oil connector 3, first guide's hydraulic oil connector 2
It is equipped with the first guide's hydraulic fluid port 21 that can be connected to one end of reducing axis hole, 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 diameter axis hole.The spool of the utility model is commutated using the two-bit triplet of sealing cone
Valve 100 can also be electromagnetic type or hand reversal valve, and third hole section 13 needs to be connected to setting with oil return opening 103 at this time, to expire
The sliding of sufficient spool 4 needs (prior art, details are not described herein again).
Further, first conical surface 121 and the tapered identical setting of the third conical surface 421, second conical surface 122 and the 4th conical surface
422 tapered identical settings.When first conical surface 121 is with third 421 tapered identical setting of the conical surface, energy when the two abuts
It enough realizes face sealing, 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 can also with the third conical surface 421
It is arranged in different tapers, what is constituted when the two abuts is linear sealing；Second conical surface 122 can also be in the 4th conical surface 422
Different taper settings, what is constituted when the two abuts is linear sealing.
Further, as shown in Figure 2, Figure 3, Figure 4, the axial one end of valve body 1 far from the first hole section 11 removedly sealing shroud
Equipped with shift sleeve structure 14, the inner cavity of shift sleeve structure 14 constitutes third hole section 13 above-mentioned, and the inner cavity of shift sleeve structure 14 is close to first
Second conical surface 122 above-mentioned is arranged in one end of hole section 11, and oil return opening 103 and third can be connected to by being arranged on the side wall of shift sleeve structure 14
The oil return via 141 of hole section 13.Shift sleeve structure 14 is removedly mounted in valve body 1, meets the installation requirement of spool 4.
Further, as shown in Figure 2, Figure 3, Figure 4, axial one end setting of the valve body 1 far from the first hole section 11, which can 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, and the both sides of oil return opening 103 are equal
Sliding sleeve sealing ring 142 is set, sliding sleeve sealing ring 142 be dual redundant structure or triple redundance structure (be arranged on shift sleeve structure 14 2 or
The accommodating conduit of 3 sliding sleeve sealing rings 142).The sliding sleeve sealing ring 142 being set between oil return opening 103 and the second hole section 12, energy
Conducting when spool 4 enough being avoided to be 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 slide against in the first sealing ring 51 on the inner wall of the first hole section 11, third axis
It is located to be arranged with to seal on the side wall between the free end and the second annular groove 431 of third shaft part 43 in section 43 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
(the accommodating conduit of 2 or 3 the first sealing rings 51, third shaft part is arranged in redundancy structure or triple redundance structure 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 constituted between one end of the valve body, is located at the free end of third shaft part 43 and the valve in third hole section 13
The second first liquid guiding cavity is constituted between the other end of body, the first sealing ring 51 can avoid 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
When the switching of position, the first sealing ring 51 and the second sealing ring 52 are not necessarily to, by hydraulic fluid port, the first sealing ring 51 and second be avoided to seal
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 in third hole section 13 can push 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
It is maintained at oil return state (also can at this time state be referred to as reset state) 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 third hole section 13, and one end of resetting spring 6 is resisted against the
The other end of the end of the free end of three shaft parts 43, resetting spring 6 is 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, resetting spring 6 and the guide of suitable dimension are designed
On the one hand oil pressure ensures under state of a control, in the first first liquid guiding cavity under lasting guide oil effect, the 4th conical surface 422 with
Second conical surface 122 is sealed against, and is on the other hand ensured under oil return state, the third conical surface 421 and the under the action of resetting spring 6
One conical surface 121 is sealed against.
Further, as shown in Fig. 2, Fig. 3, Fig. 5, the first annular groove 411 is disposed adjacent with the third conical surface 421, the second annular groove 431
It is disposed adjacent with the 4th conical surface 422.First annular groove 411 can also with the third conical surface 421 in axially spaced-apart be arranged, but the two it
Between axially spaced-apart distance must assure that when the third conical surface 421 and first conical surface 121 are sealed against (i.e. oil return state), control
Mouth 102 is connected to 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 arranged in axially spaced-apart, but axially spaced-apart distance between the two 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 passes through the second hole section 12 and the first annular groove 411 connects 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
Third sealing ring 53, the other end of the end face and valve body 1 of second guide's hydraulic oil connector 3 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 the third conical surface 421 and the 4th conical surface 422 are the metal material conical surface.Valve
Core 4 can also use other hydraulic valve core materials, such as nylon etc..
It is first that spool 4 is certainly sliding when the spool of assembling the utility model uses the two-bit triplet reversal valve 100 of sealing cone
One end of nested structure mounting hole is worn into valve body 1, and shift sleeve structure 14 is sealingly mounted in shift sleeve structure mounting hole later,
Resetting spring is packed into third hole section 13, first guide's hydraulic oil connector 2 and the second first drain at 1 both ends of valve body are finally carried out
The sealed connection of pressure oil connector 3.
As shown in Figure 2 and Figure 3, using the two-bit triplet reversal valve 100 of sealing cone there is control in the spool of the utility model
Status valve position and oil return state valve position, when spool 4 switches to state of a control by oil return state, second guide's hydraulic oil connector 3
After place stops guide oil supply, the second first liquid guiding cavity formation low pressure chamber (low compared to the pressure in the first first liquid guiding cavity), first
Guide oil is supplied at guide's hydraulic oil connector 2, the first first liquid guiding cavity forms high pressure chest (compared to the pressure in the second first liquid guiding cavity
It is high), the guide oil in the first first liquid guiding cavity pushes spool 4 to be moved to the direction of third hole section 13, the compression of resetting spring 6 at this time
Amount increases, and 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
The conical surface 122 is sealed against that (in 4 moving process of spool, there are the three of moment for oil-feed port 101, control mouth 102 and oil return opening 103
Mouth conducting, the phenomenon do not interfere with the normal use of two-bit triplet reversal valve, belong to conventional phenomenon existing in the prior art)
When, control mouth 102 is connected to by the second hole section 12 and the first annular groove 411 with oil-feed port 101, and oil return opening 103 is closed.First first
Under the action of guide oil in liquid guiding cavity, the 4th conical surface 422 and second conical surface, 122 tight abutment constitute conical surface seal, first
In first liquid guiding 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
It gives, 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 pushes 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 the third conical surface 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 that can influence two-bit triplet reversal valve 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 to oil return opening 103, and oil-feed port 101 is closed.The third conical surface 421 and first conical surface 121
Tight abutment constitutes conical surface seal, stops guide oil supply, work of the spool 4 in resetting spring 6 at second guide's hydraulic oil connector 3
It is maintained at oil return state under.
From the above mentioned, spool provided by the utility model is had following beneficial using the two-bit triplet reversal valve of sealing cone
Effect：
(1) spool of the utility model using sealing cone two-bit triplet reversal valve in, by being set in spool and valve body
The conical surface set realizes the isolating seal that hydraulic fluid port is blocked when the switching of valve position, is effectively prevented from cutting for the sealing ring used in the prior art
Damage problem is enclosed, the service life of two-bit triplet reversal valve is improved；Isolating seal is carried out using the conical surface, especially suitable for high pressure
The working condition for controlling liquid, expands the scope of application of two-bit triplet reversal valve, is conducive to promote the use of；
(2) spool of the utility model is sheathed on the of the first shaft part using in the two-bit triplet reversal valve of sealing cone
One sealing ring can avoid the conducting between the first first liquid guiding cavity and oil-feed port, and the second sealing ring for being sheathed on the second shaft part can
Avoid the conducting between the second first liquid guiding cavity and oil return opening, reduce leakage in valve, meanwhile, when valve position switches, the first sealing ring and
Second sealing ring is not necessarily to that the circle of cutting of the first sealing ring and the second sealing ring is avoided to damage by hydraulic fluid port, has been effectively ensured two
The service life of three-way diverter valve；
(3) for the spool of the utility model using in the two-bit triplet reversal valve of sealing cone, spool is switched to oil return state
And second after guide's hydraulic fluid port fuel cut-off, spool is maintained at oil return state under the action of resetting spring, reduces hydraulic pressure energy consumption.
The above descriptions are merely exemplary embodiments of the present utility model, is not limited to the model of the utility model
It encloses.Any those skilled in the art, made equivalent change under the premise of not departing from the design and principle of the utility model
Change and change, the range of the utility model protection should all be belonged to.
Claims (10)
1. a kind of spool uses the two-bit triplet reversal valve of sealing cone, including valve body, which is characterized in that be equipped in 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
Respectively with the reducing aperture axis to perforation, the reducing axis hole interior energy is releasably close for mouth, the control mouth and the oil return opening
It seals sliding sleeve and is equipped with the spool being arranged in reducing；The reducing axis hole includes the first hole section of sequence setting, the second hole section and the
Three hole sections, first hole section are connected to setting with the oil-feed port, and second hole section is connected to setting with the control mouth, described
Third hole section is connected to 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 third 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 third hole section tapered diameter；The spool includes that can seal sliding sleeve in first hole section
The first shaft part, can sliding sleeve be set to second hole section in the second shaft part and can seal sliding sleeve be set to the third hole section
The outer diameter of interior third shaft part, second shaft part is less than the aperture size of second hole section and is more than first hole
The axial length of the aperture size of the aperture size and the third hole section of section, second shaft part is less than second hole section
Axial length, the both ends of second shaft part be respectively set can with first conical surface seal against the third conical surface and can be with institute
State the second conical surface seal against the 4th conical surface, the first ring being connected to the oil-feed port is set on the side wall of first shaft part
The second annular groove being connected to the oil return opening is arranged on the side wall of the third shaft part for slot；
The working condition of the spool includes oil return state and state of a control, and the third conical surface is supported with first conical surface seal
By being isolated 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 constitutes oil return state；4th conical surface and second conical surface seal are against being isolated second annular groove and institute
Control mouth is stated, the control mouth is connected to composition control shape by second hole section and first annular groove with the oil-feed port
State.
2. spool as described in claim 1 uses the two-bit triplet reversal valve of sealing cone, which is characterized 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 respectively equipped with first first
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 described in claim 1 uses the two-bit triplet reversal valve of sealing cone, which is characterized in that first cone
Face and the tapered identical setting of the third conical surface, second conical surface and the tapered identical setting of the 4th conical surface.
4. as claim 1,2 or 3 any one of them spools use the two-bit triplet reversal valve of sealing cone, feature to exist
In removedly sealing shroud is equipped with shift sleeve structure, the shift sleeve structure for the axial one end of the valve body far from first hole section
Inner cavity constitute the third hole section, the inner cavity of the shift sleeve structure is close to one end of first hole section setting second cone
Face, on the side wall of the shift sleeve structure setting can be connected to the oil return via of the oil return opening and the third hole section.
5. spool as claimed in claim 4 uses the two-bit triplet reversal valve of sealing cone, which is characterized in that the valve body is remote
Axial one end from first hole section, which is arranged, can seal the sliding sleeve mounting hole for being arranged 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, which is characterized 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. as claim 1,2 or 3 any one of them spools use the two-bit triplet reversal valve of sealing cone, feature to exist
In being arranged on the upper side wall between the free end of first shaft part and first annular groove of first shaft part can be close
Envelope slides against in being located at the third shaft part on the first sealing ring on the inner wall of first hole section, the third shaft part
It is arranged with to seal on side wall between free end and second annular groove and slide against on the inner wall of the third hole section
Second sealing ring.
8. spool as claimed in claim 2 uses the two-bit triplet reversal valve of sealing cone, which is characterized in that the third hole
The resetting spring that the spool is slided to first hole section can be pushed by being equipped in section.
9. spool as claimed in claim 8 uses the two-bit triplet reversal valve of sealing cone, which is characterized in that described second first
The aperture size of oil diverting port is less than the aperture size of the third hole section, and one end of the resetting spring is resisted against the third 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. as claim 1,2 or 3 any one of them spools use the two-bit triplet reversal valve of sealing cone, feature to exist
In the spool is metal material spool, and the third conical surface and the 4th conical surface are the metal material conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820011937.2U CN207701829U (en) | 2018-01-04 | 2018-01-04 | Spool uses the two-bit triplet reversal valve of sealing cone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820011937.2U CN207701829U (en) | 2018-01-04 | 2018-01-04 | Spool uses the two-bit triplet reversal valve of sealing cone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207701829U true CN207701829U (en) | 2018-08-07 |
Family
ID=63031354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820011937.2U Withdrawn - After Issue CN207701829U (en) | 2018-01-04 | 2018-01-04 | Spool uses the two-bit triplet reversal valve of sealing cone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207701829U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019535A (en) * | 2018-01-04 | 2018-05-11 | 中国石油大学(北京) | Spool uses the two-bit triplet reversal valve of sealing cone |
| WO2020077984A1 (en) * | 2018-10-17 | 2020-04-23 | 广东美芝精密制造有限公司 | Three-way valve, compressor assembly, refrigeration apparatus and control method therefor |
| CN111852976A (en) * | 2020-07-16 | 2020-10-30 | 中国石油大学(北京) | Two-position three-way hydraulic change valve |
-
2018
- 2018-01-04 CN CN201820011937.2U patent/CN207701829U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019535A (en) * | 2018-01-04 | 2018-05-11 | 中国石油大学(北京) | Spool uses the two-bit triplet reversal valve of sealing cone |
| CN108019535B (en) * | 2018-01-04 | 2023-11-24 | 中国石油大学(北京) | Two-position three-way reversing valve with valve core adopting sealing conical surface |
| WO2020077984A1 (en) * | 2018-10-17 | 2020-04-23 | 广东美芝精密制造有限公司 | Three-way valve, compressor assembly, refrigeration apparatus and control method therefor |
| CN111852976A (en) * | 2020-07-16 | 2020-10-30 | 中国石油大学(北京) | Two-position three-way hydraulic change valve |
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