CN105422538A - Pressure self-adapted multi-passage equalizing valve - Google Patents
Pressure self-adapted multi-passage equalizing valve Download PDFInfo
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- CN105422538A CN105422538A CN201510615831.4A CN201510615831A CN105422538A CN 105422538 A CN105422538 A CN 105422538A CN 201510615831 A CN201510615831 A CN 201510615831A CN 105422538 A CN105422538 A CN 105422538A
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Abstract
The invention discloses a pressure self-adapted multi-passage equalizing valve. The pressure self-adapted multi-passage equalizing valve comprises a flow dividing valve, pressure relief valves and a load selector. The flow dividing valve comprises a flow dividing valve body with a flow dividing valve oil inlet and at least two flow dividing valve openings, and a plunger, wherein the plunger divides an inner cavity of the flow dividing valve body into a flow dividing valve oil inlet cavity and a flow dividing valve feedback cavity; the flow dividing valve oil inlet openings are communicated with the flow dividing valve oil inlet cavity; the plunger can slide in the valve body through pressure difference formed by a throttling device; the flow passage areas of the flow dividing valve openings keep consistent all the time in the sliding process of the plunger. Each pressure relief valve comprises a pressure relief valve body with a pressure relief valve oil outlet and a bib. The number of the pressure relief valves is equal to the number of the flow dividing valve openings. A first oil cavity of each pressure relief valve is communicated with one flow dividing valve opening, and second oil cavities are all communicated with the flow dividing valve feedback cavity. An inner cavity of a selector shell of the load selector is communicated with the flow dividing valve feedback cavity. The pressure self-adapted multi-passage equalizing valve can automatically adapt to a synchronization system with pressure changing suddenly.
Description
Technical field
The present invention relates to a kind of hydraulic valve piece, particularly relate to a kind of multi-passage current sharing valve of pressure adaptive.
Background technique
Flow equalizing valve also claims synchronous valve, needs the occasion be synchronized with the movement for multiple hydraulic actuator, multiple hydraulic actuator can be made when load inequality, still can obtain roughly the same or proportional flow, thus realize being synchronized with the movement of final controlling element.Current, utilize load pressure feedback principle to compensate and to cause because of load variations the flow equalizing valve of changes in flow rate increasingly extensive in the application of oilhydraulic engineering field.Along with operating mode becomes increasingly complex, as the increase of induced pressure difference, circulation flow frequent variations etc., bring new challenge to the design for the flow equalizing valve of speed synchronousing system.
Common flow equalizing valve is in the majority with two-way flow equalizing valve.As reversing piston formula diverter valve, it relies on pressure difference that reversing piston is separately in shunting operating mode.As hanger type diverter valve, during shunting, two hook spools are pushed open by pressure difference, are in shunting operating mode, and the traitorous head piece of now shunting is made up of the outer seamed edge of seamed edge and valve pocket in hook spool.Two kinds all belong to fixed diverter valve above, and the area namely determining restriction is nonadjustable.When its major defect is the inlet flow rate change of valve, the pressure reduction determined before and after throttle orifice also changes thereupon, thus affects synchronization accuracy.
Adjustable flow distributing valve is on the basis of hanger type shunting-combiner valve, changes determine throttle orifice as adjustable aciculiform throttle orifice into, by regulating the area in this hole, can make to produce identical pressure reduction before and after throttle orifice.But this valve adaptive capacity is more weak, the synchro system that pressure has change suddenly automatically can not be applicable to.
Summary of the invention
The technical problem to be solved in the present invention is to provide the multi-passage current sharing valve of the pressure adaptive that a kind of structure is simple, cost is low, easy and simple to handle, automatically can be applicable to the synchro system that pressure has change suddenly.
The multi-passage current sharing valve of a kind of pressure adaptive of the present invention, comprise diverter valve, reduction valve and load selector, described diverter valve comprises the shunting valve body being provided with diverter valve filler opening and at least two shunting valve ports, and be slidably disposed on the plunger of the inner chamber shunting valve body, the inner chamber of described shunting valve body is divided into diverter valve oil suction chamber and diverter valve feedback cavity by described plunger, described diverter valve filler opening is communicated with described diverter valve oil suction chamber, described plunger has throttling arrangement, the diverter valve oil suction chamber being positioned at described plunger both sides is communicated with by throttling arrangement with diverter valve feedback cavity, the pressure reduction that described plunger can be formed by described throttling arrangement slides in valve body, each described shunting valve port flow area in described plunger sliding process remains consistent,
Described reduction valve comprises the valve of the reducing valve body being provided with reduction valve oil outlet and the inner chamber being slidably disposed on reducing valve body, the inner chamber of described reducing valve body is divided into the first oil pocket and the second oil pocket by described valve, described valve slides described reduction valve oil outlet is opened gradually or closes gradually and being communicated with of described first oil pocket in described reducing valve body, and the fluid active area being positioned at the first oil pocket at described valve two ends is identical with the fluid active area being positioned at the second oil pocket;
The quantity of described reduction valve is identical with the quantity of described shunting valve port, all described with one the shunting valve port of each described first oil pocket is communicated with, each described second oil pocket is all communicated with described diverter valve feedback cavity, described load selector comprises selector housing, and the inner chamber of described selector housing is communicated with described diverter valve feedback cavity.
Preferably, described load selector also comprises the piston body and draining spool that can slide in the inner chamber of described selector housing, few one of the quantity of reduction valve described in the number ratio of described piston body, the inner chamber of described selector housing is divided into the 3rd oil pocket and the 4th oil pocket by described draining spool, all described piston bodies are all positioned at described 3rd oil pocket, and described 3rd oil pocket is divided into multiple 5th oil pocket by piston body, the quantity of described 5th oil pocket is identical with the quantity of described reduction valve, each described 5th oil pocket is all communicated with the first oil pocket of a described reduction valve, described 4th oil pocket is communicated with described diverter valve feedback cavity, described selector housing offers oil leak hole, described draining spool slides in described reducing valve body, described oil leak hole can be made to be communicated with described 4th oil pocket or to close gradually.
Preferably, described shunting valve body, described reducing valve body and described selector housing are same valve body.
Preferably, the quantity of described shunting valve port, described reduction valve and described 5th oil pocket is 4.
Preferably, the shape of each described shunting valve port is all identical with size, and uniform on same circumferential surface around the axis of described plunger.
Preferably described throttling arrangement is flow nipple.
Preferably, be provided with elastic component in described diverter valve feedback cavity, described elastic component is supported between described plunger and described diverter valve feedback cavity diapire, thus provides and make described plunger from described diverter valve feedback cavity to the power of described diverter valve oil suction chamber direction movement.
Preferably, described elastic component is Compress Spring.
Preferably, described shunting valve body is provided with sleeve, and described plunger slides in described sleeve, and described shunting valve port is opened on described sleeve wall.
Preferably, be provided with valve cover in described reducing valve body, described valve slides in described valve cover, and described reduction valve oil outlet is opened in described valve and puts.
Preferably, damping fin is provided with in second oil pocket of each described reduction valve, described damping fin offers damping hole, second oil pocket is divided into the 6th oil pocket and the 7th oil pocket by described damping fin, described 6th oil pocket is communicated with by damping hole with the 7th oil pocket, described 6th oil pocket is between the first oil pocket and the 7th oil pocket, and described 7th oil pocket is communicated with described diverter valve feedback cavity.
Preferably, described piston body comprises piston and is fixedly installed on the piston rod of piston one end.
The multi-passage current sharing valve difference from prior art of pressure adaptive of the present invention is that the multi-passage current sharing valve of pressure adaptive of the present invention is by arranging diverter valve and reduction valve, and at least two shunting valve ports are set on diverter valve, each shunting valve port is all communicated with the first oil pocket that a reduction valve is arranged, second oil pocket of each reduction valve is all communicated with the diverter valve feedback cavity on diverter valve, thus the oil pressure of each reduction valve first oil pocket is consistent, each described shunting valve port flow area in described plunger sliding process remains consistent simultaneously, therefore, it is possible to the flow realizing the fluid that each shunting valve port flows out is identical.Because the second oil pocket of each reduction valve is all communicated with the diverter valve feedback cavity on diverter valve, namely each second oil pocket is all interconnected, even if so reduction valve oil outlet (i.e. the oil outlet of pressure adaptive multi-passage current sharing valve of the present invention) place on the first oil pocket of certain reduction valve causes oil pressure to change because of external loading, when causing the oil pressure change in the first oil pocket of this reduction valve, the change of this oil pressure also can feed back to each reduction valve by the second oil pocket be interconnected, thus make the oil pressure of the first oil pocket of each reduction valve all keep identical, namely the oil pressure of each shunting valve port is identical, and then the flow realizing the fluid that each shunting valve port flows out is identical.Therefore, this multi-passage current sharing valve can be applicable to the synchro system that pressure has change suddenly automatically.
Be described further below in conjunction with the multi-passage current sharing valve of accompanying drawing to pressure adaptive of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of the diverter valve of the multi-passage current sharing valve of pressure adaptive of the present invention;
Fig. 2 is the structural representation of the reduction valve of the multi-passage current sharing valve of pressure adaptive of the present invention;
Fig. 3 is the structural representation of the load selector of the multi-passage current sharing valve of pressure adaptive of the present invention;
Fig. 4 is the structural representation (analysing and observe) of the multi-passage current sharing valve of pressure adaptive of the present invention;
Fig. 5 is the sectional view along A-A direction in Fig. 4.
Embodiment
Below in conjunction with embodiment and accompanying drawing, technological scheme of the present invention is further elaborated.Should be understood that, embodiment described herein is only for instruction and explanation of the present invention, and protection scope of the present invention is not limited to following embodiment.
First it should be noted that, the present invention aims to provide a kind of adaptive multi-passage current sharing valve, being applied in pressure has in the synchro system of change suddenly, all be communicated with the diverter valve feedback cavity on diverter valve by making the second oil pocket of each reduction valve, thus the oil pressure of each reduction valve first oil pocket is consistent, make each described shunting valve port flow area in described plunger sliding process remain consistent, therefore, it is possible to the flow realizing the fluid that each shunting valve port flows out is identical simultaneously.
The multi-passage current sharing valve of a kind of pressure adaptive of the present invention, comprises diverter valve, reduction valve and load selector.Shown in Figure 1, described diverter valve comprises the plunger 14 of the shunting valve body being provided with diverter valve filler opening 19 (i.e. the filler opening of the adaptive multi-passage current sharing valve of the present invention) and at least two shunting valve ports 20 and the inner chamber being slidably disposed on shunting valve body.Wherein, the quantity of shunting valve port 20 is multiple, the present embodiment preferably 4.
The inner chamber of described shunting valve body is divided into diverter valve oil suction chamber and diverter valve feedback cavity 21 by described plunger 14, described diverter valve filler opening 19 is communicated with described diverter valve oil suction chamber, described plunger 14 has throttling arrangement, the diverter valve oil suction chamber being positioned at described plunger 14 both sides is communicated with by throttling arrangement with diverter valve feedback cavity 21, the pressure reduction that described plunger 14 can be formed by described throttling arrangement slides from diverter valve oil suction chamber to diverter valve feedback cavity 21 direction in valve body 1, each described shunting valve port 20 flow area in described plunger 14 sliding process remains consistent.
Wherein, shown throttling arrangement is preferably flow nipple 15 in the present invention.Those skilled in the art should know, as long as the structure that can play throttling action can both be applied in the present invention, as arranged throttle orifice on plunger 14.
Described load selector comprises selector housing, thus makes diverter valve feedback cavity 21 and the inner space of selector housing with oil leak hole.
Shown in Figure 2, described reduction valve comprises the valve 3 of the reducing valve body being provided with reduction valve oil outlet 30 and the inner chamber being slidably disposed on reducing valve body, the inner chamber of described pressurization valve body 1 is divided into the first oil pocket and the second oil pocket by described valve 3, described valve 3 slides in described reducing valve body, described reduction valve oil outlet 30 can be made to open gradually or close gradually, thus described reduction valve oil outlet 30 (i.e. the oil outlet of the present invention's adaptive multi-passage current sharing valve) is communicated with described first oil pocket.The fluid active area being positioned at the first oil pocket at described valve 3 two ends is identical with the fluid active area being positioned at the second oil pocket.In the present invention, described fluid active area is identical when referring to that the first oil pocket is identical with the pressure of the second oil pocket, and when fluid active area is identical, the first oil pocket is identical with the pressure that the second oil pocket produces valve 3.
The quantity of described reduction valve is identical with the quantity of described shunting valve port 20, is 4 in the present embodiment.All described with one the shunting valve port 20 of each described first oil pocket is communicated with, and each described second oil pocket is all communicated with described diverter valve feedback cavity 21.
Remain consistent to make each described shunting valve port 20 flow area in described plunger 14 sliding process, in the present embodiment, the shape of preferred each described shunting valve port 20 is all identical with size, and uniform on same circumferential surface around the axis of described plunger 14.The shape circular of shunting valve port 20.
When the second oil pocket pressure increase of reduction valve 30, because the second oil pocket is communicated with diverter valve feedback cavity 21, therefore the pressure of diverter valve feedback cavity 21 is along with increase, promotes plunger 14 and slides from diverter valve feedback cavity 21 to diverter valve oil suction chamber direction in valve body 1, until form new transient equiliblium.
In order to make this apparatus structure more reasonable, in the present embodiment, elastic component 13 is provided with in described diverter valve feedback cavity 21, described elastic component 13 is supported between described plunger 14 and described diverter valve feedback cavity 21 diapire, thus provides further and make described plunger 14 from described diverter valve feedback cavity 21 to the power of described diverter valve oil suction chamber direction movement.Elastic component 13 described in the present embodiment is preferably Compress Spring.Diverter valve is when reset mode, and shunting valve port 20 can be blocked by plunger 14 under the effect of described elastic component 13.
In the present invention, preferably, be provided with sleeve 17 in described shunting valve body, described plunger 14 slides in described sleeve 17, and described shunting valve port 20 is opened on described sleeve 17 barrel.Concrete, the inner chamber of described shunting valve body is the cylindrical cavity of open at one end.Sleeve 17 inserts in the inner chamber of shunting valve body, and plug screw 16 screws in the opening end of the inner chamber of shunting valve body, clamp sleeve 17, and is closed by described inner chamber, fixing by steel ball 18 circumference between the inner chamber of sleeve 17 and shunting valve body.Steel ball 18 is stuck in the semicircle orifice on sleeve 17 and shunting valve body, thus prevents sleeve 17 from rotating.Plug screw 16 offers diverter valve filler opening 19 of the present invention.Flow nipple 15 screws in the through hole that plunger 14 is offered, and the lower end of elastic component 13 acts on the counterbore face, inside of plunger 14, and upper end acts on the end face of diverter valve feedback cavity 21.Plunger 14 outer ring is provided with flange, thus under the effect of elastic component elastic force, the flange on plunger 14 is made to be pressed in the end of described sleeve 17 the inner, and then make elastic component be in its pre-compressed state, so when the pressure reduction that described throttling arrangement is formed reaches certain pressure, the precompression that plunger 14 just can overcome elastic component moves inward (moving to elastic component direction).
Plunger 14, under the effect of the feedback pressure Pe of the pressure P i of diverter valve oil suction chamber, diverter valve feedback cavity 21, elastic component 13, slides, shunts valve port 20 form diverter valve with four on sleeve 17 in sleeve 17.
Preferably, be provided with valve cover 4 in the present embodiment in reducing valve body, described valve 3 slides in described valve cover 4, and described reduction valve oil outlet 30 is opened on described valve cover 4.Damping fin 5 is provided with in the second oil pocket of each described reduction valve, described damping fin 5 offers damping hole, second oil pocket is divided into the 6th oil pocket and the 7th oil pocket by described damping fin 5, described 6th oil pocket is communicated with by damping hole with the 7th oil pocket, described 6th oil pocket is between the first oil pocket and the 7th oil pocket, and described 7th oil pocket is communicated with described diverter valve feedback cavity 21.
In order to achieve selection and the feedback function of oil outlet maximum load, as shown in Figure 3, the load selector of the multi-passage current sharing valve of pressure adaptive of the present invention also comprises the piston body 9 and draining spool 8 that can slide in the inner chamber of described selector housing, few one of the quantity of reduction valve described in the number ratio of described piston body 9, the inner chamber of described selector housing is divided into the 3rd oil pocket and the 4th oil pocket 35 by described draining spool 8, all described piston bodies 9 are all positioned at described 3rd oil pocket, and described 3rd oil pocket is divided into multiple 5th oil pocket by piston body 9, the quantity of described 5th oil pocket is identical with the quantity of described reduction valve, each described 5th oil pocket is all communicated with the first oil pocket of a described reduction valve, described 4th oil pocket 35 is communicated with described diverter valve feedback cavity 21, described selector housing offers oil leak hole 36, described draining spool 8 slides in described reducing valve body, described oil leak hole 36 can be made to be communicated with described 4th oil pocket 35 or to close gradually.Preferably the, described piston body 9 comprises piston and is fixedly installed on the piston rod of piston one end.
See Fig. 4, Fig. 5, in the present embodiment, described shunting valve body, described reducing valve body and selector housing are same valve body 1.There are four identical reduction valve at the middle part of valve body 1, is separated between two reduction valve by spacer 6.End cap 2, valve 3, valve cover 4, damping fin 5 is had in reduction valve; End cap 2 is fixed by screw 38 and valve body 1, encloses 29 seal between valve cover 4 and valve body 1 by O shape; Feedback pressure Pe in first oil pocket acts on the right-hand member of valve 3 by the damping hole of damping fin 5; The outlet pressure of shunting valve port 20, by auxiliary hole I 22, arrives the left end of valve 3 respectively; Described reduction valve oil outlet 30 is throttle orifice, and its quantity is 8.Valve 3 is under the effect of pressure at both sides, and slide in valve cover 4 and reach an equilibrium position, the described reduction valve oil outlet 30 overlapped on 4 with valve forms reduction valve.
Load selector is positioned at the top of valve body 1.Particularly, screw plug I 7, draining spool 8, piston body 9, valve pocket 10, screw plug II 11 and load is had in load selector to select spring 12 in the present embodiment.Screw plug I 7 and screw plug II 11 close the two ends of the through hole be opened on valve body 1 respectively, and in the present embodiment, the quantity of piston body 9 is three, therefore form four the 5th oil pockets, i.e. load cavity I 31, load cavity II 32, load cavity III 33, load cavity IV 34.Load selects spring 12 to be arranged in load cavity I 31, provides elastic force for the piston body 9 to correspondence.Load cavity I 31, load cavity II 32, load cavity III 33, load cavity IV 34 are communicated with the first oil pocket of a reduction valve respectively, namely with relief chamber I 25, relief chamber II 26, relief chamber III 27, relief chamber IV 28.Thus external loading pressure enters load cavity I 31, load cavity II 32, load cavity III 33, load cavity IV 34 respectively, act on piston body 9 and draining spool 8, maximum load pressure is delivered to the 4th oil pocket 35.Feedback pressure Pe by auxiliary hole II 37, is delivered in diverter valve feedback cavity 21, feedback cavity I 23, feedback cavity II 24, is communicated with diverter valve feedback cavity 21, and wherein feedback cavity I 23, feedback cavity II 24 are the second oil pocket of reduction valve.
Diverter valve of the present invention is when reset mode, and the shunting valve port 20 of four on sleeve 17 is blocked by plunger 14 under the effect of elastic component 13; Operationally, input pressure Pi flows into from the diverter valve filler opening 19 of valve body 1.A small amount of fluid flows to diverter valve feedback cavity 21 by the fixed orifice of flow nipple 15, pressure reduction is formed when utilizing fluid to flow through throttle orifice, promote plunger 14 to move up in sleeve 17, open four shunting valve ports 20 on sleeve 17, the opening amount of four valve ports is identical with shape, thus area of passage is identical.Four the shunting valve ports 20 of major part fluid by sleeve 17 is opened, be divided into four road binders liquid, enter into four reduction valve (as shown in Figure 3) respectively, then flow to the four road oil outlets (being communicated with corresponding reduction valve oil outlet 30) of flow equalizing valve.Because the area of passage of four shunting valve ports 20 is identical on sleeve 17, and by the adjustment of reduction valve, four front and back pressure reduction shunting valve port 20 are consistent, therefore four road oil outlets export identical flow.
After fluid enters reduction valve, act on the left side of valve 3; The right side oil pocket of valve 3 communicates with the diverter valve feedback cavity 21 of diverter valve through damping fin 5, and the oil liquid pressure in diverter valve feedback cavity 21 is the feedback pressure Pe that load selector (as shown in Figure 4) is selected.Utilize force balance principle, because double side acting area is consistent, therefore the input pressure of four reduction valve all approximates feedback pressure Pe.Four tunnels that the oil-feed of four reduction valve is diverter valve are fuel-displaced, and the inlet pressures of four shunting valve ports 20 are input pressure Pi, meet the condition that the front and back pressure difference of four shunting valve ports 20 is consistent; Valve 3 dynamically horizontally slips in valve cover 4 simultaneously, changes the opening amount of reduction valve oil outlet 30 on valve cover 4, thus adapts to the change of external loading pressure.
The induced pressure of four road oil outlets of flow equalizing valve, enters into load cavity I 31, load cavity II 32, load cavity III 33, the load cavity IV 34 of load selector through valve body 1 internal oil channel.Maximum induced pressure, through the transmission of piston body 9, is acted on the left side of draining spool 8 by induced pressure; On diverter valve, the fixed orifice of flow nipple 15 flows to a small amount of fluid of diverter valve feedback cavity 21, by auxiliary hole II 37, enters into the right side of draining spool 8; According to force balance principle, fluid overcomes the maximum load pressure acted on the left of draining spool 8, promotes draining spool 8 and opens oil leak hole 36, form normal vent flow; Because the effect of spring 12 is selected in oil leak hole 36 and load, the feedback pressure Pe on the right side of draining spool 8 is a little more than maximum load pressure.Again by auxiliary hole II 37, on the right side of the valve 3 this pressure P e being fed back to four reduction valve and the diverter valve feedback cavity 21 of diverter valve, achieve maximum load pressure selection and the feedback function of four oil outlets.
The maximum load pressure feedback of oil outlet is after the diverter valve feedback cavity 21 of diverter valve, and in order to open four shunting valve ports 20, input pressure Pi need overcome diverter valve feedback cavity 21 pressure (i.e. feedback pressure Pe), the elastic force of elastic component 13 and hydraulic power.When the maximum load of four oil outlets changes, the input pressure Pi of flow equalizing valve also changes thereupon, thus achieves the self adaption of input pressure Pi.
The multi-passage current sharing valve of a kind of pressure adaptive of the present invention has following beneficial effect:
1) single channel liquid stream can be realized 2 tunnels, 3 tunnels, 4 tunnels or more way by this flow equalizing valve, contrasts traditional flow equalizing valve that can only realize 2 tunnel shuntings, adds bleed off circuit quantity, simplify hydraulic synchronization control loop.(existing self-regualting type diverter valve is on the basis of fixed diverter valve, adds that prestage is two-way poorly subtracts pressure valve surely, and the pressure-reduction outlet of reduction valve instead of, and flow divider valve core determines throttle orifice, and openings of sizes can adjust automatically according to uninterrupted.Above self-regualting type diverter valve is only limited to and single oily stream is divided into two tributaries, is also only limitted to be divided into two shuntings, and expansion is poor.Above-mentioned flow equalizing valve is subject to the restriction of structural principle, can only be two-way flow equalizing valve.During for more than two tunnels synchro system, need multiple two-way flow equalizing valve Combination application, loop is complicated, reliability reduces.)
2) load selector and the design of internal control oil circuit is adopted, the input pressure of flow equalizing valve follows the maximum load pressure change of oil outlet, the system oil supply pressure of making can change along with maximum load pressure, is not always operating at overflow situation, reaches energy-conservation object.
3) this valve member has that shunting precision is high, shunting precision is less than 2.5%; The advantages such as installation form is simple, functional reliability is high, expansibility is strong.
Above-described embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technological scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (12)
1. the multi-passage current sharing valve of a pressure adaptive, it is characterized in that: comprise diverter valve, reduction valve and load selector, described diverter valve comprises the shunting valve body being provided with diverter valve filler opening (19) and at least two shuntings valve port (20), and be slidably disposed on the plunger (14) of the inner chamber shunting valve body, the inner chamber of described shunting valve body is divided into diverter valve oil suction chamber and diverter valve feedback cavity (21) by described plunger (14), described diverter valve filler opening (19) is communicated with described diverter valve oil suction chamber, (14) have throttling arrangement to described plunger, the diverter valve oil suction chamber being positioned at described plunger (14) both sides is communicated with by throttling arrangement with diverter valve feedback cavity (21), the pressure reduction that described plunger (14) can be formed by described throttling arrangement slides in valve body (1), each described shunting valve port (20) flow area in described plunger (14) sliding process remains consistent,
Described reduction valve comprises the valve (3) of the reducing valve body being provided with reduction valve oil outlet (30) and the inner chamber being slidably disposed on reducing valve body, the inner chamber of described reducing valve body is divided into the first oil pocket and the second oil pocket by described valve (3), described valve (3) slides described reduction valve oil outlet (30) is opened gradually or closes gradually and being communicated with of described first oil pocket in described reducing valve body, and the fluid active area being positioned at the first oil pocket at described valve (3) two ends is identical with the fluid active area being positioned at the second oil pocket;
The quantity of described reduction valve is identical with the quantity of described shunting valve port (20), all described with one the shunting valve port (20) of each described first oil pocket is communicated with, each described second oil pocket is all communicated with described diverter valve feedback cavity (21), described load selector comprises selector housing, and the inner chamber of described selector housing is communicated with described diverter valve feedback cavity (21).
2. the multi-passage current sharing valve of pressure adaptive according to claim 1, it is characterized in that: described load selector also comprises the piston body (9) and draining spool (8) that can slide in the inner chamber of described selector housing, few one of the quantity of reduction valve described in the number ratio of described piston body (9), the inner chamber of described selector housing is divided into the 3rd oil pocket and the 4th oil pocket (35) by described draining spool (8), all described piston bodies (9) are all positioned at described 3rd oil pocket, and described 3rd oil pocket is divided into multiple 5th oil pocket by piston body (9), the quantity of described 5th oil pocket is identical with the quantity of described reduction valve, each described 5th oil pocket is all communicated with the first oil pocket of a described reduction valve, described 4th oil pocket (35) is communicated with described diverter valve feedback cavity (21), described selector housing offers oil leak hole (36), described draining spool (8) is slided in described reducing valve body, described oil leak hole (36) can be made to be communicated with described 4th oil pocket (35) or to close gradually.
3. the multi-passage current sharing valve of pressure adaptive according to claim 1, is characterized in that: described shunting valve body, described reducing valve body and described selector housing are same valve body.
4. the multi-passage current sharing valve of pressure adaptive according to claim 3, is characterized in that: the quantity of described shunting valve port (20), described reduction valve and described 5th oil pocket is 4.
5. according to the multi-passage current sharing valve of the pressure adaptive in claim 1-4 described in any one, it is characterized in that: the shape of each described shunting valve port (20) is all identical with size, and uniform on same circumferential surface around the axis of described plunger (14).
6. according to the multi-passage current sharing valve of the pressure adaptive in claim 1-4 described in any one, it is characterized in that: described throttling arrangement is flow nipple (15).
7. according to the multi-passage current sharing valve of the pressure adaptive in claim 1-4 described in any one, it is characterized in that: in described diverter valve feedback cavity (21), be provided with elastic component (13), described elastic component (13) is supported between described plunger (14) and described diverter valve feedback cavity (21) diapire, thus provides and make described plunger (14) from described diverter valve feedback cavity (21) to the power of described diverter valve oil suction chamber direction movement.
8. the multi-passage current sharing valve of pressure adaptive according to claim 7, is characterized in that: described elastic component (13) is Compress Spring.
9. according to the multi-passage current sharing valve of the pressure adaptive in claim 1-4 described in any one, it is characterized in that: described shunting valve body is provided with sleeve (17), described plunger (14) slides in described sleeve (17), and described shunting valve port (20) is opened on described sleeve (17) barrel.
10. according to the multi-passage current sharing valve of the pressure adaptive in claim 1-4 described in any one, it is characterized in that: in described reducing valve body, be provided with valve cover (4), described valve (3) slides in described valve cover (4), and described reduction valve oil outlet (30) is opened on described valve cover (4).
11. according to the multi-passage current sharing valve of the pressure adaptive in claim 1-4 described in any one, it is characterized in that: in the second oil pocket of each described reduction valve, be provided with damping fin (5), (5) offer damping hole to described damping fin, second oil pocket is divided into the 6th oil pocket and the 7th oil pocket by described damping fin (5), described 6th oil pocket is communicated with by damping hole with the 7th oil pocket, described 6th oil pocket is between the first oil pocket and the 7th oil pocket, and described 7th oil pocket is communicated with described diverter valve feedback cavity (21).
The multi-passage current sharing valve of 12. pressure adaptives according to claim 11, is characterized in that: described piston body (9) comprises piston and is fixedly installed on the piston rod of piston one end.
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| CN201510615831.4A CN105422538B (en) | 2015-09-24 | 2015-09-24 | The multi-passage current sharing valve of pressure adaptive |
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| CN201510615831.4A CN105422538B (en) | 2015-09-24 | 2015-09-24 | The multi-passage current sharing valve of pressure adaptive |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782153A (en) * | 2016-05-04 | 2016-07-20 | 宁波市加力特机械有限公司 | Pressure compensation valve of hydraulic pressure station of electric platform |
| CN108077980A (en) * | 2017-12-29 | 2018-05-29 | 内蒙古蒙牛乳业（集团）股份有限公司 | A kind of drawing mechanism |
| CN111075959A (en) * | 2019-12-06 | 2020-04-28 | 北京动力机械研究所 | Self-adaptive flow rate regulating proportional regulator |
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| EP0129665A1 (en) * | 1983-05-26 | 1985-01-02 | Luciano Migliori | Sliding valve for pneumatic circuits |
| CN85104146A (en) * | 1985-06-03 | 1986-12-03 | 叶光祖 | Hand controled synchronous reversal valve |
| US4756330A (en) * | 1986-03-21 | 1988-07-12 | Zahnradfabrik Friedrichshafen, Ag. | Flow divider valve |
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| US6164310A (en) * | 1998-06-22 | 2000-12-26 | Shimadzu Corporation | Priority type flow dividing valve |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782153A (en) * | 2016-05-04 | 2016-07-20 | 宁波市加力特机械有限公司 | Pressure compensation valve of hydraulic pressure station of electric platform |
| CN108077980A (en) * | 2017-12-29 | 2018-05-29 | 内蒙古蒙牛乳业（集团）股份有限公司 | A kind of drawing mechanism |
| CN108077980B (en) * | 2017-12-29 | 2023-05-30 | 内蒙古蒙牛乳业（集团）股份有限公司 | Discharging device |
| CN111075959A (en) * | 2019-12-06 | 2020-04-28 | 北京动力机械研究所 | Self-adaptive flow rate regulating proportional regulator |
| CN111075959B (en) * | 2019-12-06 | 2021-07-16 | 北京动力机械研究所 | Self-adaptive flow rate regulating proportional regulator |
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| Publication number | Publication date |
|---|---|
| CN105422538B (en) | 2017-10-31 |
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