CN103851226B - High-speed large-flow Self-resetting electromagnetic valve - Google Patents
High-speed large-flow Self-resetting electromagnetic valve Download PDFInfo
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- CN103851226B CN103851226B CN201410111135.5A CN201410111135A CN103851226B CN 103851226 B CN103851226 B CN 103851226B CN 201410111135 A CN201410111135 A CN 201410111135A CN 103851226 B CN103851226 B CN 103851226B
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/042—The valves being provided with fuel passages
- F02M61/045—The valves being provided with fuel discharge orifices
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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
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
Abstract
The invention discloses a kind of high-speed large-flow Self-resetting electromagnetic valve, including valve gap, valve body, outer spool, left inside spool, right inner spool, electric magnet and armature, armature is sleeved on outer spool, outer spool and armature are separately mounted in the cavity of valve gap and valve body formation, the first through hole it is sequentially provided with in outer spool, second through hole and third through-hole, left inside spool and right inner spool are slidably mounted in the first through hole and third through-hole respectively, on outer spool, the position at corresponding second through hole two ends is respectively equipped with fuel feed hole and spill port, the diameter of the first through hole and third through-hole is all higher than the diameter of the second through hole, left inside spool and the relative end of the second through hole are correspondingly provided with the left sealing cone cooperated and the left fitted seal conical surface respectively, the diameter of the stub end of the left fitted seal conical surface is less than the diameter of the stub end of left sealing cone；Right inner spool and the relative end of the second through hole are correspondingly provided with the right sealing cone cooperated and the right fitted seal conical surface respectively.Suitable in internal combustion engine.
Description
Technical field
The present invention relates to a kind of high-speed large-flow electromagnetic valve, specifically a kind of high-speed large-flow Self-resetting electromagnetic valve.
Background technology
At present, high-speed large-flow electromagnetic valve is had very high requirement by marine diesel electric control fuel oil jet system: must simultaneously meet the requirements such as big flow, high-speed response, control accuracy height and concordance are good；Meanwhile, also want under the mal-conditions such as high pressure, high temperature, high humidity and vibration, reliably to work with significantly high frequency stable by the requirement that controls of system.But, the high-pressure high-flow of high-speed large-flow electromagnetic valve and quickly response conflict often, the requirement of big flow requires over the valve port circulation area improving electromagnetic valve and realizes, which increases the spool quality of electromagnetic valve, thus increasing the motional inertia of spool, reduce the characteristic that electromagnetic valve quickly responds；And, the high-voltage oil liquid in the valve pocket of electromagnetic valve also can increase the resistance that spool is turned on and off, and extends the response time of electromagnetic valve.Therefore, exploitation high-speed large-flow electromagnetic valve so that it is response speed and negotiability can meet electric-controlled fuel injector fuel Injection Control requirement, are the practical key technologies that must solve of marine diesel electric control fuel oil jet system.
Chinese patent 00115916.X discloses two-position and three-way solenoid valve with double free inner conic cores, although this electromagnetic valve has high speed dynamic response performance and big discharge characteristic, but there is problems in that time actually used
Owing to the outer spool of this electromagnetic valve relies on the elastic reset of back-moving spring, and the spring of same model is it is difficult to ensure that same elastic force accurately, so this electromagnetic valve is when producing, it is difficult to ensure that the electromagnetic valve of same model possesses identical response speed, thus causing that the control accuracy of this electromagnetic valve is not high.
Summary of the invention
The invention aims to solve the deficiency that above-mentioned background technology exists, it is proposed to the high-speed large-flow Self-resetting electromagnetic valve that a kind of control accuracy is high.
For achieving the above object, the present invention adopts the following technical scheme that a kind of high-speed large-flow Self-resetting electromagnetic valve, including valve gap, valve body, outer spool, left inside spool, right inner spool, electric magnet and armature, described armature is sleeved on described outer spool, described outer spool and armature are axially mounted in the cavity of described valve gap and valve body formation respectively, the first through hole it is sequentially provided with vertically in described outer spool, second through hole and third through-hole, described left inside spool and right inner spool are slidably mounted in described first through hole and third through-hole respectively, on described outer spool, the position at corresponding described second through hole two ends is respectively equipped with fuel feed hole and spill port, the diameter of described first through hole and third through-hole is all higher than the diameter of described second through hole, the end that described left inside spool is relative with described second through hole is correspondingly provided with the left sealing cone cooperated and the left fitted seal conical surface respectively, the diameter of the stub end of the described left fitted seal conical surface is less than the diameter of the stub end of described left sealing cone；The end that described right inner spool is relative with described second through hole is correspondingly provided with the right sealing cone cooperated and the right fitted seal conical surface respectively.By adopting the technical scheme of the diameter that the diameter design of the stub end of the left fitted seal conical surface is become the stub end less than left sealing cone, when making left sealing cone and left fitted seal conical surface gluing, sealing, the area towards the second through hole side of fuel feed hole is more than the area of the second through hole side dorsad of fuel feed hole, and then make the external spool of the hydraulic oil in fuel feed hole produce () thrust and reset force in Fig. 2 to the right, so, when electric magnet dead electricity, just can pass through this reset force and realize automatically reseting of outer spool；Owing to the pressure of the hydraulic oil in described fuel feed hole is certain, so described reset force is definite value, thus improve the control accuracy of this electromagnetic valve；Simultaneously as the pressure of hydraulic oil in fuel feed hole is very big, so the hydraulic oil in fuel feed hole can the very big reset force of external spool generation, so, when electric magnet dead electricity, the outer valve core reset of described reset force energy fast driving, improve the response speed of this electromagnetic valve.
In such scheme, described second through hole is provided with fourth hole vertically on one end inwall of described right inner spool, and the diameter of described fourth hole is more than the diameter of described second through hole, and the diameter of described fourth hole is less than the diameter of described third through-hole.By adding fourth hole in the second through hole, the junction making the second through hole and fourth hole forms step surface, so, described step surface will be that outer spool produces () thrust in Fig. 1 to the left by the hydraulic oil in outer spool, this thrust will offset the reset force of the external spool of a part of hydraulic oil, thus the adhesive force reduced between the described right fitted seal conical surface and right sealing cone, improve outer spool and the service life of right inner spool, and then improve the service life of this electromagnetic valve.
In such scheme, the diameter of the stub end of the described right fitted seal conical surface is less than the diameter of the stub end of described right sealing cone.By adopting the technical scheme of the diameter that the diameter design of the stub end of the right fitted seal conical surface is become the stub end less than described right sealing cone, when making the right fitted seal conical surface and right sealing cone gluing, sealing, the area towards the second through hole side of spill port is more than the area of the second through hole side dorsad of spill port, and then make the external spool of the hydraulic oil in spill port produce () thrust in Fig. 2 to the left, this thrust can offset the reset force of the external spool of a part of hydraulic oil further, thus further increasing the service life of this electromagnetic valve.
In such scheme, described body wall is respectively equipped with corresponding and described fuel feed hole and oil-in that spill port connects and oil return opening, described oil-in connects respectively through corresponding and described first through hole of described fuel feed hole and spill port and third through-hole with oil return opening, being provided with control drain path in described right inner spool vertically, on described valve body, the position of corresponding described control drain path is provided with the control drain tap connected with described control drain path.By offering control drain path in right inner spool, and on valve body, offer the control drain tap connected with described control drain path, so just the control mouth of electromagnetic valve and drain tap are integrated together, thus simplifying the structure of this electromagnetic valve, also simplify this electromagnetic valve pipeline in use and connecting.
In such scheme, described electric magnet sidewall is provided with and press-fits boss, and described valve body is provided with towards one end inwall of described valve gap and press-fits, with described, the press-assembling surface that boss matches.By adopting the mode fixed electromagnet press-fited, this fixed form can be effectively prevented described electric magnet and rotate in the cavity that valve gap and valve body are formed, and wearing and tearing thus avoiding electric magnet its insullac in rotation process, improve service life；Meanwhile, this fixed form is more convenient for the installation of electric magnet.
In such scheme, described valve gap is slab construction, and described valve gap is provided with connection boss towards the end face of described valve body, and the diameter compatible of the external diameter of described connection boss and the link of described valve body closes.So only in valve body, one-time positioning need to processing circular hole, without extra second positioning processing circular hole in valve gap, thus simplifying the processing technique of valve gap and valve body, reducing cost.
In such scheme, described body wall is provided with the pressure transducer connected with described second through hole；On described body wall, the position of corresponding described electric magnet is provided with temperature sensor；Described valve body is provided with the displacement transducer for detecting described armature motion position.Automatically controlling of this electromagnetic valve is achieved by the pressure transducer added on valve body, temperature sensor and displacement transducer.
In such scheme, described valve body is provided with the oil drain valve component that the installation cavity with described armature is connected.
In such scheme, described left inside spool is provided with left adjustment block towards one end of described electric magnet, one end of described right inner spool described left inside spool dorsad is provided with right adjustment block, is provided with for connecting described control drain path and controlling the interface channel of drain tap in described right adjustment block.The left adjustment block added and the thickness of right adjustment block can design according to the movement travel that left inside spool and right inner spool are actually required.
In such scheme, the pole number of described electric magnet is 6, and the described magnet spool number of turn is 20～25, and the thickness of described armature is 2.5～3.0mm.When the pole number of electric magnet is 6, electric magnet magnetic circuit reluctance is minimum, and number of ampere turns is maximum, and electromagnetic force is maximum；When the magnet spool number of turn is 20, electromagnetic attraction tends to saturated (maximum)；When the thickness of armature is 2.5～3.0mm, armature and work of electromagnet are near maximum permeability point, and magnetic circuit reluctance is minimum, and electromagnetic force is maximum.
The present invention is compared with the prior art, and fully shows that it is advantageous in that:
1, by adopting the technical scheme of the diameter that the diameter design of the stub end of the left fitted seal conical surface is become the stub end less than left sealing cone, when making left sealing cone and left fitted seal conical surface gluing, sealing, the area towards the second through hole side of fuel feed hole is more than the area of the second through hole side dorsad of fuel feed hole, and then make the external spool of the hydraulic oil in fuel feed hole produce thrust and reset force, so, when electric magnet dead electricity, just can pass through this reset force and realize automatically reseting of outer spool；Owing to the pressure of the hydraulic oil in described fuel feed hole is certain, so described reset force is definite value, thus improve the control accuracy of this electromagnetic valve；Simultaneously as the pressure of hydraulic oil in fuel feed hole is very big, so the hydraulic oil in fuel feed hole can the very big reset force of external spool generation, so, when electric magnet dead electricity, the outer valve core reset of described reset force energy fast driving, improve the response speed of this electromagnetic valve；
2, by adding fourth hole in the second through hole, the junction making the second through hole and fourth hole forms step surface, so, described step surface will be that outer spool produces thrust by the hydraulic oil in outer spool, this thrust will offset the reset force of the external spool of a part of hydraulic oil, thus the adhesive force reduced between the described right fitted seal conical surface and right sealing cone, improve outer spool and the service life of right inner spool, and then improve the service life of this electromagnetic valve；
3, by adopting the technical scheme of the diameter that the diameter design of the stub end of the right fitted seal conical surface is become the stub end less than described right sealing cone, when making the right fitted seal conical surface and right sealing cone gluing, sealing, the area towards the second through hole side of spill port is more than the area of the second through hole side dorsad of spill port, and then make the external spool of the hydraulic oil in spill port produce thrust, this thrust can offset the reset force of the external spool of a part of hydraulic oil further, thus further increasing the service life of this electromagnetic valve；
4, by offering control drain path in right inner spool, and on valve body, offer the control drain tap connected with described control drain path, so just the control mouth of electromagnetic valve and drain tap are integrated together, thus simplifying the structure of this electromagnetic valve, also simplify this electromagnetic valve pipeline in use and connecting；
5, by adopting the mode fixed electromagnet press-fited, this fixed form can be effectively prevented described electric magnet and rotate in the cavity that valve gap and valve body are formed, and wearing and tearing thus avoiding electric magnet its insullac in rotation process, improve service life；Meanwhile, this fixed form is more convenient for the installation of electric magnet；
6, one-time positioning processing circular hole in valve body, without extra second positioning processing circular hole in valve gap, thus simplifying the processing technique of valve gap and valve body, reduces cost；
7, pressure transducer, temperature sensor and displacement transducer by adding on valve body achieve automatically controlling of this electromagnetic valve；
8, the left adjustment block added and the thickness of right adjustment block can design according to the movement travel that left inside spool and right inner spool are actually required；
9, when the pole number of electric magnet is 6, electric magnet magnetic circuit reluctance is minimum, and number of ampere turns is maximum, and electromagnetic force is maximum；When the magnet spool number of turn is 20, electromagnetic attraction tends to saturated (maximum)；When the thickness of armature is 2.5～3.0mm, armature and work of electromagnet are near maximum permeability point, and magnetic circuit reluctance is minimum, and electromagnetic force is maximum.
The features such as in sum, the present invention has simple in construction, and control accuracy is high, and flow is big, fast response time, long service life, and during use, pipeline connects simple, and processing is simple and cost is low.
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is present invention structural representation when being in normally open；
Fig. 2 is present invention structural representation when being in closure state；
Fig. 3 is the partial enlargement structural representation in B portion in Fig. 1；
Fig. 4 is the partial enlargement structural representation in C portion in Fig. 2；
Fig. 5 is the side-looking structural representation of Fig. 1;
Fig. 6 is the cross-sectional view of line A-A along Fig. 5.
In the drawings, valve gap 1, connect boss 1a, valve body 2, first through hole 2a, second through hole 2b, left fitted seal conical surface 2b1, right fitted seal conical surface 2b2, third through-hole 2c, fourth hole 2d, outer spool 3, fuel feed hole 3a, spill port 3b, left inside spool 4, left sealing cone 4a, right inner spool 5, right sealing cone 5a, control drain path 5b, electric magnet 6, press-fit boss 6a, armature 7, oil-in 8, oil return opening 9, control drain tap 10, press-assembling surface 11, pressure transducer 12, temperature sensor 13, displacement transducer 14, oil drain valve component 15, left adjustment block 16, right adjustment block 17, interface channel 17a.
Detailed description of the invention
A kind of high-speed large-flow Self-resetting electromagnetic valve as shown in Figure 1, including valve gap 1, valve body 2, outer spool 3, left inside spool 4, right inner spool 5, electric magnet 6 and armature 7, described armature 7 is sleeved on described outer spool 3, described outer spool 3 and armature 7 are axially mounted in the cavity of described valve gap 1 and valve body 2 formation respectively, the first through hole 2a, the second through hole 2b and third through-hole 2c it is sequentially provided with vertically from left to right in described outer spool 3, described first through hole 2a, the second through hole 2b and third through-hole 2c can be coaxially arranged, it is possible to designs according to actual needs；Described left inside spool 4 and right inner spool 5 are slidably mounted in described first through hole 2a and third through-hole 2c respectively, on described outer spool 3, the position at corresponding described second through hole 2b two ends is respectively equipped with corresponding and described first through hole 2a and the third through-hole 2c fuel feed hole 3a connected and spill port 3b, it is characterized in that the diameter of described first through hole 2a and third through-hole 2c is all higher than the diameter of described second through hole 2b, described left inside spool 4 is correspondingly provided with the left sealing cone 4a cooperated and left fitted seal conical surface 2b1 respectively with described second relative for through hole 2b end, the diameter of the diameter of the stub end of the described left fitted seal conical surface 2b1 stub end less than described left sealing cone 4a；Described right inner spool 5 is correspondingly provided with the right sealing cone 5a cooperated and right fitted seal conical surface 2b2 respectively with described second relative for through hole 2b end.By adopting the technical scheme of the diameter that the diameter design of the stub end of left fitted seal conical surface 2b1 is become the stub end less than left sealing cone 4a, when making left sealing cone 4a and left fitted seal conical surface 2b1 gluing, sealing, the area of the area towards the second through hole 2b side of fuel feed hole 3a the second through hole 2b side dorsad more than fuel feed hole 3a, and then make the hydraulic oil in fuel feed hole 3a external spool 3 produce () thrust and reset force in Fig. 2 to the right, so, when electric magnet 6 dead electricity, just can pass through this reset force and realize automatically reseting of outer spool 3；Owing to the pressure of the hydraulic oil in described fuel feed hole 3a is certain, so described reset force is definite value, thus improve the control accuracy of this electromagnetic valve；Simultaneously as the pressure of hydraulic oil in fuel feed hole 3a is very big, so the hydraulic oil in fuel feed hole 3a can produce very big reset force by external spool 3, so, when electric magnet 6 dead electricity, the outer spool 3 of described reset force energy fast driving resets, and improves the response speed of this electromagnetic valve.
Above-mentioned second through hole 2b is provided with fourth hole 2d vertically on one end inwall of described right inner spool 5, and this fourth hole 2d can be coaxially arranged with described second through hole 2b, it is possible to designs according to actual needs；The diameter of the described fourth hole 2d diameter more than described second through hole 2b, and the diameter that the diameter of described fourth hole 2d is less than described third through-hole 2c.By adding fourth hole 2d in the second through hole 2b, the junction making the second through hole 2b and fourth hole 2d forms step surface, so, described step surface will be that outer spool 3 produces () thrust in Fig. 1 to the left by the hydraulic oil in outer spool 3, this thrust will offset the reset force of the external spool 3 of a part of hydraulic oil, thus the adhesive force reduced between described right fitted seal conical surface 2b2 and right sealing cone 5a, improve the service life of outer spool 3 and right inner spool 5, and then improve the service life of this electromagnetic valve.The diameter of the diameter of the stub end of the described right fitted seal conical surface 2b2 stub end less than described right sealing cone 5a.By adopting the technical scheme of the diameter that the diameter design of the stub end of right fitted seal conical surface 2b2 is become the stub end less than described right sealing cone 5a, when making right fitted seal conical surface 2b2 and right sealing cone 5a gluing, sealing, the area of the area towards the second through hole 2b side of spill port 3b the second through hole 2b side dorsad more than spill port 3b, and then make the hydraulic oil in spill port 3b external spool 3 produce () thrust in Fig. 2 to the left, this thrust can offset the reset force of the external spool 3 of a part of hydraulic oil further, thus further increasing the service life of this electromagnetic valve.
Above-mentioned valve body 2 sidewall is respectively equipped with corresponding and described fuel feed hole 3a and the spill port 3b oil-in 8 connected and oil return opening 9, described oil-in 8 connects respectively through corresponding with spill port 3b and the described first through hole 2a and third through-hole 2c of described fuel feed hole 3a with oil return opening 9, being provided with vertically in described right inner spool 5 and the described second through hole 2b control drain path 5b connected, on described valve body 2, the position of corresponding described control drain path 5b is provided with and the described control drain path 5b control drain tap 10 connected.By offering control drain path 5b in right inner spool 5, and offer and the described control drain path 5b control drain tap 10 connected on valve body 2, so just the control mouth of electromagnetic valve and drain tap are integrated together, thus simplifying the structure of this electromagnetic valve, also simplify this electromagnetic valve pipeline in use and connecting.
Above-mentioned electric magnet 6 sidewall is provided with and press-fits boss 6a, and described valve body 2 is provided with towards one end inwall of described valve gap 1 and press-fits the boss 6a press-assembling surface 11 matched with described.By adopting the mode fixed electromagnet 6 press-fited, this fixed form can be effectively prevented described electric magnet 6 and rotate in the cavity that valve gap 1 and valve body 2 are formed, and wearing and tearing thus avoiding electric magnet 6 its insullac in rotation process, improve service life；Meanwhile, this fixed form is more convenient for the installation of electric magnet 6.Described valve gap 1 is slab construction, and described valve gap 1 is provided with connection boss 1a towards the end face of described valve body 2, and the diameter compatible of the external diameter of described connection boss 1a and the link of described valve body 2 closes.Described valve gap 1 is fixedly mounted on described valve body 2 by screw.So only in valve body 2, one-time positioning need to processing circular hole, without extra second positioning processing circular hole in valve gap 1, thus simplifying valve gap 1 and the processing technique of valve body 2, reducing cost.
Radially being provided with on above-mentioned valve body 2 sidewall and the described second through hole 2b pressure transducer 12 connected, described pressure transducer 12 is for monitoring the pressure of the cavity of described valve gap 1 and valve body 2 formation；On described valve body 2 sidewall, the position of radially corresponding described electric magnet 6 is provided with temperature sensor 13, and the point layout of described temperature sensor 13 near the position of coil, is used for monitoring the temperature of coil between the pole of described electric magnet 6；Described valve body 2 end is provided with the displacement transducer 14 for detecting described armature 7 movement position vertically, and institute's displacement sensors 14 is non-contact electric eddy sensor, and its measuring surface is the end face of described armature 7, for monitoring the displacement of armature 7.Can the duty of this electromagnetic valve of on-line monitoring by the pressure transducer 12 added on valve body 2, temperature sensor 13 and displacement transducer 14, it is achieved that automatically controlling of this electromagnetic valve.Described valve body 2 end be provided with vertically with described armature 7 the oil drain valve component 15(that is connected of cavity is installed referring to Fig. 6), to prevent the oil pressure in the installation cavity body at armature 7 place too high.
Above-mentioned left inside spool 4 is provided with left adjustment block 16 towards one end of described electric magnet 6, one end of described right inner spool 5 described left inside spool 4 dorsad is provided with right adjustment block 17, is provided with for connecting described control drain path 5b and controlling the interface channel 17a of drain tap 10 in described right adjustment block 17.The left adjustment block 16 added and the thickness of right adjustment block 17 can design according to the movement travel that left inside spool 4 and right inner spool 5 are actually required.
The pole number of above-mentioned electric magnet 6 is 6, and the coil turn of described electric magnet 6 is 20～25, and the thickness of described armature 7 is 2.5～3.0mm.When the pole number of electric magnet 6 is 6, electric magnet magnetic circuit reluctance is minimum, and number of ampere turns is maximum, and electromagnetic force is maximum；When the coil turn of electric magnet 6 is 20, electromagnetic attraction tends to saturated (maximum)；When the thickness of armature 7 is 2.5～3.0mm, armature 7 and electric magnet 6 are operated near maximum permeability point, and magnetic circuit reluctance is minimum, and electromagnetic force is maximum.
This electromagnetic valve is normally open solenoid valve, and its work process is as follows:
When this electromagnetic valve obtains electric, electromagnetic valve touches moment, the coil of described electric magnet 6 passes to larger current, described electric magnet 6 just produces sufficiently large electromagnetic force, under the effect of electromagnetic force, described armature 7 drives described outer spool 3 to overcome hydraulic coupling and mechanical resistance rapidly to left movement, until the left sealing cone 4a of its left fitted seal conical surface 2b1 and left inside spool 4 fits tightly；Meanwhile, the right fitted seal conical surface 2b2 of described outer spool 3 separates (referring to Fig. 1 and Fig. 2) with the right sealing cone 5a of described right inner spool 5；Subsequently, the coil of described electric magnet 6 just passes into less stabling current, maintains certain electromagnetic force, and the left sealing cone 4a of left fitted seal conical surface 2b1 Yu left inside spool 4 to keep described outer spool 3 fits tightly, so that this electromagnetic valve is kept closed.Now, described oil-in 8 is sealed by left fitted seal conical surface 2b1 and left sealing cone 4a, and described oil return opening 9 connects control element oil return with controlling drain tap 10, and this process achieves the quick closedown of electromagnetic valve；
When this electromagnetic valve dead electricity, electromagnetic force disappears, owing to the oil pressure of described oil-in 8 is bigger, and the area (namely the compression area on the left of fuel feed hole 3a is less than right side) of the second through hole 2b side dorsad that the area towards the second through hole 2b side of described fuel feed hole 3a is more than fuel feed hole 3a, so the high pressure liquid force feed in described fuel feed hole 3a can produce very big action of hydraulic force to the right by external spool 3, described outer spool 3 is driven quickly to move to right-hand member, until the right sealing cone 5a of its right fitted seal conical surface 2b2 and described right inner spool 5 fits tightly；When high pressure liquid force feed is full of whole valve pocket, the step surface of described second through hole 2b and fourth hole 2d junction can be produced hydraulic coupling to the left by this high pressure liquid force feed, this hydraulic coupling can reduce the stress between right fitted seal conical surface 2b2 and right sealing cone 5a effectively, to improve service life；Meanwhile, the left fitted seal conical surface 2b1 of described outer spool 3 separates (referring to Fig. 1 and Fig. 2) with the left sealing cone 4a of described left inside spool 4；Now, described oil return opening 8 is sealed by described right fitted seal conical surface 2b2 and right sealing cone 5a, and described oil-in 8 connects with controlling drain tap 10, and this process achieves the quick unlatching of electromagnetic valve.
The present invention is by adopting the technical scheme of the diameter that the diameter design of the stub end of left fitted seal conical surface 2b1 becomes the stub end less than left sealing cone 4a, when making left sealing cone 4a and left fitted seal conical surface 2b1 gluing, sealing, the area of the area towards the second through hole 2b side of fuel feed hole 3a the second through hole 2b side dorsad more than fuel feed hole 3a, and then make the hydraulic oil in fuel feed hole 3a external spool 3 produce () thrust and reset force in Fig. 2 to the right, so, when electric magnet 6 dead electricity, just can pass through this reset force and realize automatically reseting of outer spool 3；Owing to the pressure of the hydraulic oil in described fuel feed hole 3a is certain, so described reset force is definite value, thus improve the control accuracy of this electromagnetic valve；Simultaneously as the pressure of hydraulic oil in fuel feed hole 3a is very big, so the hydraulic oil in fuel feed hole 3a can produce very big reset force by external spool 3, so, when electric magnet 6 dead electricity, the outer spool 3 of described reset force energy fast driving resets, and improves the response speed of this electromagnetic valve；
By adding fourth hole 2d in the second through hole 2b, the junction making the second through hole 2b and fourth hole 2d forms step surface, so, described step surface will be that outer spool 3 produces () thrust in Fig. 1 to the left by the hydraulic oil in outer spool 3, this thrust will offset the reset force of the external spool 3 of a part of hydraulic oil, thus the adhesive force reduced between described right fitted seal conical surface 2b2 and right sealing cone 5a, improve the service life of outer spool 3 and right inner spool 5, and then improve the service life of this electromagnetic valve；
By adopting the technical scheme of the diameter that the diameter design of the stub end of right fitted seal conical surface 2b2 is become the stub end less than described right sealing cone 5a, when making right fitted seal conical surface 2b2 and right sealing cone 5a gluing, sealing, the area of the area towards the second through hole 2b side of spill port 3b the second through hole 2b side dorsad more than spill port 3b, and then make the hydraulic oil in spill port 3b external spool 3 produce () thrust in Fig. 2 to the left, this thrust can offset the reset force of the external spool 3 of a part of hydraulic oil further, thus further increasing the service life of this electromagnetic valve；
By offering control drain path 5b in right inner spool 5, and offer and the described control drain path 5b control drain tap 10 connected on valve body 2, so just the control mouth of electromagnetic valve and drain tap are integrated together, thus simplifying the structure of this electromagnetic valve, also simplify this electromagnetic valve pipeline in use and connecting；
By adopting the mode fixed electromagnet 6 press-fited, this fixed form can be effectively prevented described electric magnet 6 and rotate in the cavity that valve gap 1 and valve body 2 are formed, and wearing and tearing thus avoiding electric magnet 6 its insullac in rotation process, improve service life；Meanwhile, this fixed form is more convenient for the installation of electric magnet 6；
One-time positioning processing circular hole in valve body 2, without extra second positioning processing circular hole in valve gap 1, thus simplifying valve gap 1 and the processing technique of valve body 2, reduces cost；
Automatically controlling of this electromagnetic valve is achieved by the pressure transducer 12 added on valve body 2, temperature sensor 13 and displacement transducer 14；
The left adjustment block 16 added and the thickness of right adjustment block 17 can design according to the movement travel that left inside spool 4 and right inner spool 5 are actually required；
When the pole number of electric magnet 6 is 6, electric magnet magnetic circuit reluctance is minimum, and number of ampere turns is maximum, and electromagnetic force is maximum；When the coil turn of electric magnet 6 is 20, electromagnetic attraction tends to saturated (maximum)；When the thickness of armature 7 is 2.5～3.0mm, armature 7 and electric magnet 6 are operated near maximum permeability point, and magnetic circuit reluctance is minimum, and electromagnetic force is maximum.
The features such as in sum, the present invention has simple in construction, and control accuracy is high, and flow is big, fast response time, long service life, and during use, pipeline connects simple, and processing is simple and cost is low.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (8)
1. a high-speed large-flow Self-resetting electromagnetic valve, including valve gap (1), valve body (2), outer spool (3), left inside spool (4), right inner spool (5), electric magnet (6) and armature (7), described armature (7) is sleeved on described outer spool (3), in the cavity that described outer spool (3) and armature (7) are axially mounted to described valve gap (1) respectively and valve body (2) is formed, the first through hole (2a) it is sequentially provided with vertically in described outer spool (3), second through hole (2b) and third through-hole (2c), described left inside spool (4) and right inner spool (5) are slidably mounted in described first through hole (2a) and third through-hole (2c) respectively, the position at upper corresponding described second through hole (2b) two ends of described outer spool (3) is respectively equipped with fuel feed hole (3a) and spill port (3b), it is characterized in that the diameter of described first through hole (2a) and third through-hole (2c) is all higher than the diameter of described second through hole (2b), described left inside spool (4) end relative with described second through hole (2b) is correspondingly provided with the left sealing cone (4a) and the left fitted seal conical surface (2b1) that cooperate respectively, the diameter of the stub end of the described left fitted seal conical surface (2b1) is less than the diameter of the stub end of described left sealing cone (4a)；Described right inner spool (5) end relative with described second through hole (2b) is correspondingly provided with the right sealing cone (5a) and the right fitted seal conical surface (2b2) that cooperate respectively；Described second through hole (2b) is provided with fourth hole (2d) vertically on one end inwall of described right inner spool (5), the diameter of described fourth hole (2d) is more than the diameter of described second through hole (2b), and the diameter that the diameter of described fourth hole (2d) is less than described third through-hole (2c)；The diameter of the stub end of the described right fitted seal conical surface (2b2) is less than the diameter of the stub end of described right sealing cone (5a).
2. high-speed large-flow Self-resetting electromagnetic valve according to claim 1, it is characterized in that described valve body (2) sidewall is respectively equipped with corresponding and described fuel feed hole (3a) and oil-in (8) that spill port (3b) connects and oil return opening (9), described oil-in (8) connects respectively through corresponding and described first through hole (2a) of described fuel feed hole (3a) and spill port (3b) and third through-hole (2c) with oil return opening (9), control drain path (5b) it is provided with vertically in described right inner spool (5), the position of the upper corresponding described control drain path (5b) of described valve body (2) is provided with the control drain tap (10) connected with described control drain path (5b).
3. high-speed large-flow Self-resetting electromagnetic valve according to claim 1, it is characterized in that described electric magnet (6) sidewall is provided with and press-fit boss (6a), described valve body (2) is provided with towards one end inwall of described valve gap (1) and press-fits, with described, the press-assembling surface (11) that boss (6a) matches.
4. high-speed large-flow Self-resetting electromagnetic valve according to claim 3, it is characterized in that described valve gap (1) is slab construction, described valve gap (1) is provided with connection boss (1a) towards the end face of described valve body (2), and the diameter compatible of the external diameter of described connection boss (1a) and the link of described valve body (2) closes.
5. high-speed large-flow Self-resetting electromagnetic valve according to claim 1, is characterized in that described valve body (2) sidewall is provided with the pressure transducer (12) connected with described second through hole (2b)；On described valve body (2) sidewall, the position of corresponding described electric magnet (6) is provided with temperature sensor (13)；Described valve body (2) is provided with the displacement transducer (14) for detecting described armature (7) movement position.
6. high-speed large-flow Self-resetting electromagnetic valve according to claim 1, is characterized in that described valve body (2) is provided with the oil drain valve component (15) that the installation cavity with described armature (7) is connected.
7. high-speed large-flow Self-resetting electromagnetic valve according to claim 1, it is characterized in that described left inside spool (4) is provided with left adjustment block (16) towards one end of described electric magnet (6), one end of described right inner spool (5) described left inside spool (4) dorsad is provided with right adjustment block (17).
8. high-speed large-flow Self-resetting electromagnetic valve according to claim 1, it is characterized in that the pole number of described electric magnet (6) is 6, the coil turn of described electric magnet (6) is 20～25, and the thickness of described armature (7) is 2.5～3.0mm.
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| CN201410111135.5A CN103851226B (en) | 2014-03-24 | 2014-03-24 | High-speed large-flow Self-resetting electromagnetic valve |
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| CN201410111135.5A CN103851226B (en) | 2014-03-24 | 2014-03-24 | High-speed large-flow Self-resetting electromagnetic valve |
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| CN103851226B true CN103851226B (en) | 2016-06-29 |
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| CN106762908B (en) * | 2016-12-29 | 2018-11-06 | 宁波市鄞州通力液压电器厂 | Hydraulic control device and the method for flow control |
| CN108488473B (en) * | 2018-03-16 | 2023-12-15 | 武汉理工大学 | Pilot-operated piezoelectric valve |
| CN109826995B (en) * | 2019-03-25 | 2023-12-29 | 西华大学 | Multiple sealed high-speed electromagnetic valve |
| CN111750159B (en) * | 2020-07-09 | 2022-04-12 | 四川航天烽火伺服控制技术有限公司 | Novel electromagnetic valve capable of improving thrust of valve element |
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| US4754776A (en) * | 1984-01-24 | 1988-07-05 | Mckee James E | Pneumatic control valves with diaphragm actuators and modular body structure |
| JP3408637B2 (en) * | 1994-08-26 | 2003-05-19 | 株式会社コガネイ | Poppet type directional valve |
| CN1131387C (en) * | 2000-07-28 | 2003-12-17 | 武汉理工大学 | Two-position and three-way solenoid valve with double free inner conic cores |
| CN201100457Y (en) * | 2007-11-03 | 2008-08-13 | 蚌埠市方正教育设备有限公司 | Electromagnetic pilot high-voltage two-position and three-pass valve |
| CN203868412U (en) * | 2014-03-24 | 2014-10-08 | 武汉理工大学 | High-speed and mass-flow self-reset electromagnetic valve |
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