CN1077263A - Low-power electro-magnetic valve and manufacture method thereof - Google Patents

Abstract

A kind of low-power electro-magnetic valve and manufacture method thereof refer to produce non-contact or active force between the inside and outside strong permanent magnetic body of a kind of utilization especially, overcome the fluid pressure in the valve body, the bi-stable type electro-magnetic valve structure of mobile valve switch opening/shutting valve.It mainly is made up of the valve body structure of motor, slowing-down structure, interior outer magnet and valve rod, valve block.The forward and reverse running of motor driven slowing-down structure, make two antipoles on it to outer magnet produce reciprocating type displacement, the inner magnet that the priming valve stem tip sets firmly.The back and forth driven suction active force of scolding that is all formed by the mutual alignment of different magnetic poles on the outer magnet that slowing-down structure drove and inner magnet magnetic pole of valve rod is controlled.

Description

Low-power electro-magnetic valve and manufacture method thereof

The present invention relates to a kind of low-power electro-magnetic valve, specifically, be to produce contactless active force between a kind of interior outer magnet that utilizes permanent powerful rare earth magnetite (Rare earth magnet) to make, mobile valve switch opening/shutting valve forms bi-stable type electro-magnetic valve structure in order to overcome the hydrodynamic pressure in the valve body.

The solenoid valve that uses mainly is that the magnetic force that utilizes electromagnetic screwed pipe conduction back electromagnetic coil to produce removes to control metal valve stem at present, makes it by sticking or release, thereby produces priming valve block opening/shutting valve.For the convenience narrated and the defective of clear and definite prior art, we provide Fig. 1 and Fig. 2 earlier.Fig. 1 be the valve rod of traditional electrical magnet valve by the generalized section of electromagnetic coil sticking, Fig. 2 is that the valve rod of traditional electrical magnet valve is by generalized section that spring held.As shown in the figure, outside fluid valve bodies, be provided with an electromagnetic screwed pipe 2 and the peripheral electromagnetic coil 21 that twines thereof, remove opening/shutting valve in order to the valve rod in the priming working fluid.The central authorities of this electromagnetic screwed pipe 2 are formed with a bar groove 22 in addition, and these bar groove 22 contents are with a spring 221 and metal valve stem 222.The bottom system of valve rod 222 and osculum 231 correspondences in the middle of the valve block 23 are able to turn on or off state.One end of valve block 23 is provided with a water inlet 232 and communicates with the working fluid of intake pipe 11.When electromagnetic coil 21 is accepted load generation magnetic force (Fig. 1), promptly adsorb pressing spring 221 in the valve rod 222 and break away from valve block, osculum 231 in the middle of opening, make the working fluid of valve block 23 left sides and right side fluid equipressure be borrowed the osculum 231 of valve block 23 and enter in the lower discharge pipe of right atrial pressure 12, and then reduction valve block 23 left side pressure, make valve block 23 right sides from the working fluid of intake pipe 11 because of pressure difference jacking valve block 23, unlatching is by the floss hole 121 of valve block 23 press seals, fluid is flowed in the waste pipe, finish discharge function.When electromagnetic coil 21 does not move (Fig. 2), then valve rod 222 is subjected to the compressing of spring 221 and tightly holds valve block 23 and middle osculum 231 thereof, and the working fluid that the water inlet 232 of borrowing valve block 23 flows into increases valve block 23 left side pressure, valve block 23 is descended seal the discharging mouth of pipe 212, working fluid is intercepted outside discharge pipe 12 by valve block 23 temporarily, reach the function of sealing.But following scarce fraud easily takes place in this solenoid valve 2 work often:

1. electromagnetic coil 21 is only worked when priming valve rod 222 is inhaled the work Open valve, because it must overcome the resistance of bar groove 22 internal cause valve rods 222 pressure springs 221 effects when inhaling work valve rod 222, and the resistance that compresses its internal work fluid, therefore, the load power consumption amount and the required voltage value of electromagnetic coil 21 generation confinement valve rods 222 must heighten relatively with the increase of resistance;

2. during electromagnetic coil 21 sticking valve rods 222, easy intervention because of working fluids in the bar groove 22 produces resistance when making valve rod 222 turnover bar grooves 22, add the resistance of spring 221 compressions, cause the permanent load time that contracts in the electromagnetic coil 21 generation confinement valve rods 222 therefore to increase, its power consumption must be agreed to the permanent load of electromagnetic coil 21 and be heightened relatively.

The traditional electrical magnet valve that the objective of the invention is to forgo must rely on all above-mentioned shortcoming that electromagnetic coil produces the confinement valve rod, and a kind of low-power electro-magnetic valve and manufacture method thereof are provided.

Technical solution of the present invention is as follows:

Utilize no-contact active force between permanent strong magnet with switch valve; And utilize suction mutually, the active force that repels each other between the permanent interior outer magnet of mobile outer magnet position change to remove the priming valve rod, to control the keying of valve; Simultaneously, also utilize between outer magnet suction, scold active force and force the inside and outside tooth body in the tooth-shape structure of outer magnet turn displacement to protect effective engagement driving position forever.

As mentioned above, low-power electromagnetic valve of the present invention, except that comprising existing valve rod, valve block and valve seat etc., also comprise producing in contactless active force permanent outer magnet, mobile outer magnet with the transmission system of positive and negative force direction of inhaling mutually, repel each other between outer magnet in changing, and make outer magnet turn displacement, come and go move be subjected in outer magnet intercropping firmly effect and the permanent effectively tooth-shape structure of engagement.

As seen enforcement of the present invention is the non-fit active force switch valve that adopts between permanent strong magnet, inner magnet is installed in the top of valve rod, and outer magnet is seated on the transmission system, utilize mobile outer magnet position change permanent between outer magnet suction mutually, positive and negative force direction repels each other, the priming valve rod is controlled the switching motion of valve, be provided with simultaneously tooth-shape structure in the transmission system with the displacement of turn outer magnet, by the suction between interior outer magnet, scold active force to force the inside and outside tooth body in the tooth-shape structure to protect effective engagement driving position forever.

Advantage of the present invention is that power consumption is little: scold valve rod to remove to open and close the valve block osculum because the two-way stable state of permanent strong magnet is inhaled, therefore, need not set up spring and overcome obstructing of acting force of the spring, and form behind electricity driving displacement magnet location, lasting gravitation between permanent strong magnet, can draw automatically under need not the situation of permanent load power consumption and scold the counteracting fluid resistance, reach the usefulness of priming valve rod turnover bar groove work simultaneously.In addition, because control valve switch part and working fluid isolated by a trough wall surface, thereby be not subjected to obstructing of fluid resistance, make generation the shortest action time, thereby power consumption is minimum also.

Brief description of the present invention is as follows:

Fig. 1 is that the valve rod of traditional electrical magnet valve is by the generalized section of electromagnetic coil sticking.

Fig. 2 is that the valve rod of traditional electrical magnet valve is the generalized section that spring held.

Fig. 3 is the assembly decomposing schematic representation of one embodiment of the present of invention.

Fig. 4 is the sticking generalized section of one embodiment of the present of invention assembly.

Fig. 5 is that generalized section is scolded on the top of one embodiment of the present of invention assembly.

Fig. 6 is an a slowing-down structure embodiment's of the present invention forward swing schematic representation.

Fig. 7 is an a slowing-down structure embodiment's of the present invention back pendulum schematic representation.

Fig. 8 is the schematic representation of contactless interattraction between permanent strong magnet of the present invention.

Fig. 9 is the schematic representation of the contactless effect of repelling each other between permanent strong magnet of the present invention.

Figure 10 is the assembly decomposing schematic representation of an alternative embodiment of the invention.

Figure 11 is the sticking generalized section of an alternative embodiment of the invention assembly.

Figure 12 is that generalized section is scolded on the top of an alternative embodiment of the invention assembly.

Below with reference to the accompanying drawings, provide several embodiments of the present invention, and describe them in detail, so that ins and outs of the present invention further to be provided.

See also Fig. 1, as seen from the figure: the present invention mainly utilizes the inner magnet of establishing the slowing-down structure 33, outer magnet 34 and valve rod 35 tops that connect with motor 32 in the pedestal 31 to put for 351 corresponding groups, forms the operating device 3 of the electromagnetic coil in the replacement prior art.Wherein pedestal 31 is for having a substrate 311 and seat groove 312 moulding, substrate 311 bottom surfaces can with valve seat 4 end face joinings and solid by screw 313 spiral shells, make the maltha outer rim of the valve block 41 in the valve seat 4 must think that the capping of substrate 311 bottoms institute fixes.And substrate 311 bottoms are formed with a bar groove 314, are able to be partitioned into trough wall surface 315 location with seat groove 312 bottom lands of substrate 311 end faces, can hold one group of slowing-down structure 33 of cover in this groove 312.This slowing-down structure 33 is made up of with worm screw 333 slide block 331, and this slide block 331 is made of metal, adsorbable outer magnet 34 on it, and its two side can depend in the present groove 312 and slide.Slide block 331 central authorities are equipped with an inner screw tooth hole 332, and the outer tooth body 334 that must think worm screw 333 is led and held.Transmission shaft 321 sockets that these worm screw 333 1 ends are motor 32 are fixed, and then be able to rotate by clockwise and anticlockwise transmission worm screw 333 forward and reverse positions of motor 32, produce the displacement movement that advances and retreat in the slide block 331 present grooves 312 and drive, wherein slide block 331 bottom surfaces are provided with a magnetic patch groove 330, in order to settle an outer magnet 34 location.This outer magnet 34 can utilize respectively the two-phase heteropole to the two permanent magnetic patch 341,342 made of powerful rare earth magnetite (Rare earth magnet) constitute.Again, hold in the bar groove of establishing in substrate 311 bottoms 314 and be with a valve rod 35, the top of this valve rod 35 also is provided with one and utilizes the unipolar inner magnet 351 of powerful Rare-Earth Magnetic one-tenth made of stones to locate, formation utilize trough wall surface 315 tops two only displacement inhale, scold the magnetic patch 341,342 of active force by turns, on the priming valve rod 35 very by sticking or press down the osculum 411 that holds valve block 41.

See also Fig. 4 and Fig. 5, when little current drives motor 32 forwards running, and after driving worm screw 333 turns, the slide block 331 that is meshed with worm screw 333 outer tooth bodies 334 promptly produces the displacement of advancing and leads, this moment, one magnetic patch 341 of slide block 331 bottom surfaces attracted promptly can to see through the interval of trough wall surface 315 and very sticking is equipped with on the valve rod 35 of inner magnet 315 in priming, the aperture 411 that goes out of valve block 41 is not held by valve rod 35, this moment, the working fluid of valve block 41 inboard high pressure just borrowed valve block 41 middle osculums 411 to flow in the low-voltage space of outside discharge pipes 42, valve block 41 left side pressure are reduced, the working fluid jacking valve block 41 of valve block 41 right side intake pipes 43 high pressure leaves the discharging mouth of pipe 421 again, owing to there is pressure difference, make the working fluid of intake pipe 43 flow into discharge pipe 42, form the current drainage effect of Open valve.We have a look the situation when motor 32 antiports, at this moment, slide block 331 is promptly led because of worm screw 333 reverse turns make to give up the throne thereafter to move, simultaneously, the anti-magnetic pole magnetic patch 342 of another of slide block 331 bottom surfaces promptly can see through trough wall surface 315 at interval, the valve rod 35 that inner magnet 351 is equipped with in priming presses down and holds valve block 41 and seal its osculum 411, make the working fluid that enters by valve block 41 water inlets 412 continue to increase the pressure in valve block 41 left sides, cooperate valve rod 35 to draw the strength of pressure holding, promote the valve block 41 sealing discharging mouths of pipe 421, in the pressure of working fluid and discharge pipe 42 under the effect of space pressure difference, valve block 41 closes the discharging mouth of pipe 421, form the fluid stopping effect of throttle down, and then reach and utilize the contactless active force of powerful rare earth magnetite to remove opening/shutting valve, wherein only need the lower powered power supply supply motor of output to implement and lead the motion that movable slider moves to a location, can cooperate the contactless active force that itself continues priming between strong magnet to remove mobile valve rod opening/shutting valve.

Consult Fig. 6 and Fig. 7, the present invention also can change into slowing-down structure another kind of composite structure, shown in the figure is to utilize a tooth sector 36 to replace aforesaid slide block 331.The central point that waits the radius wall of this tooth sector 36 is provided with one and articulates fulcrum 361, use the interlock that is meshed of tooth body and screw rod 333 outer tooth bodies 334, impel tooth sector 36 to be produced the revolving type displacement, wherein a side wall surface of tooth sector 36 is provided with that (as the fan tooth wheel body is that metal is made by a tinsel, then can omit) contain the hollow magnetic patch positioning plate 362,363 of the made diplopore of plastic material, in order to absorption outer magnet 37.The powerful rare earth magnetite that is arranged with different magnetic poles in this magnetic patch positioning plate 362,363 is gone into interior and positive and negative magnetic patch 371,372 location formation outer magnet 37, and be provided with a center arc groove 38 in the sidewall one suitable arc path position of tooth sector 36, be used to be provided with on the pedestal positioning post 381 and stand upright and be set in this arc groove 38, the turn displacement stroke of restriction tooth sector 36.And so as to making worm screw 333 for after 32 transmissions of motor, when producing the forward turn, be able to mesh sector gear 36 and limit the inner magnet 351 of its swing to anodal magnetic patch 371 positions and the valve rod 35 that is positioned at trough wall surface 315 inside sticking mutually, form the action of Open valve conducting working fluid, or when band tooth sector 36 is revolved in worm screw 333 counter-rotatings, swing promptly produces the effect of repelling each other with inner magnet 351 to negative pole magnetic patch 372 positions, forces valve rod 35 to press down valve block 41, forms the fluid stopping action of throttle down.

Yet the round shift length of the outer magnet 34 on the slowing-down structure 33 of the present invention, can wear and lead the arc distance stroke of holding by the number of turns of control motor 32 rotary worms 333 or for setting center arc groove 38 yields berth to post 381, reach in the control, the suction of the shift length that produces by slide block 331 or tooth sector 36 between outer magnet, scold valve rod 35 actions, more can utilize the powerful force characteristics between the inside and outside magnet polar body that powerful rare magnetite makes, assembly can make worm screw 333 lead to hold slide block 331 or worm screw 333 is led holds tooth sector 36 all behind the outer magnet fixed displacement, make the disengaging and the joggleword of between cog make the no longer displacement of outer magnet location forever, and after motor 32 stalls, utilize the powerful suction of magnet to scold active force to retract out-of-gear tooth-shape structure, make it protect effectively meshing relation position relatively forever, be to utilize to change the worm screw 333 outer tooth number own or tooth sector 36 numbers of teeth own, make distance or the arc distance between tooth sector 36 Origin And Destinations between worm screw 333 outer tooth Origin And Destinations schedule certain length, make its anodal magnetic patch central point of leading reducing gear 33 displacement outer magnets in motor 32 above behind the central point of inner magnet negative pole magnetic patch, its worm screw 333 interlock slide block 331(or interlock tooth sector 36) tooth-shape structure break away from engagement, the influence that makes the outer magnet location rotated by worm screw 333, and its feature is after motor 32 stops moving the commentaries on classics, the powerful active force of inhaling mutually of the both positive and negative polarity magnetic patch central point of interior outer magnet, outer magnet is produced return displacement, retract out-of-gear tooth-shape structure, the meshing relation position of remaining valid is (as Fig. 6, shown in 7), and when motor starting worm screw antiport, drive the outer magnet displacement, the position that maintenance and inner magnet repel each other, and pass through the inner magnet central point at the anodal outer magnet of displacement, and negative pole outer magnet magnetic patch central point does not surpass inner magnet magnetic patch central point, but when producing mutual expelling force, its tooth-shape structure breaks away from engagement once more, make outer magnet negative pole central point stop the unlikely inner magnet magnetic patch central point that surpasses of displacement, and after the worm screw stop motion, repel each other and produce the active force of inhaling mutually because of the magnetic patch central point of inner magnet and outer magnet negative pole magnetic patch central point produce with anodal magnetic patch, outer magnet is produced return displacement, and retracting out-of-gear tooth-shape structure, the meshing relation position of remaining valid is (as Fig. 8, shown in 9).Because of being respectively, the starting point of worm screw profile of tooth and terminal point produce the position that concerns of inhaling, scolding effect in the both positive and negative polarity between outer magnet, therefore, be able to force helical pitch Origin And Destination place to protect the state that is meshed of bidentate body all forever, in case force slide block or the puzzlement that can't again playback of tooth sector after displacement surpasses the helical pitch amount because of the clockwise and anticlockwise surplus energy of the back motor that cuts off the power supply revolves band by therebetween magnetic pole active force.

Moreover, electro-magnetic valve unitary construction of the present invention also can adopt such as following another kind of example structure, as shown in figure 10, can find out that its series is with establishing motor 32 in the pedestal 5, slowing-down structure 6, irony rotating block 7, inner magnet 81 and another internal partition 83 on outer magnet 71 and the valve rod 8, form the operation mechanism that another replaces electromagnetic coil, and itself and valve seat 4 engaged and become one and utilize to draw between inside and outside strong magnet and scold distance early work big more means firmly more, reach the effect that produces the valve of pushing high hydraulic pressure open, wherein pedestal 5 is for having gear grooved 51, rhone 52 and 53 moulding of collection indent.Be ccontaining one slowing-down structure 6 that is constituted by small gear 61 and gearwheel 62 in the gear grooved 51, and small gear 61 is directly by motor 32 transmissions, and produces the effect of slowing down and increasing torsion so as to interlock gearwheel 62.Gearwheel 62 then by axle center 621 with on transmission of power to the irony rotating block 7, make it produce turn, yet the wheel wall of gearwheel 62 is provided with the arc groove 622 in first-class arc footpath, and establish one grade of post 623 and be set among the arc groove 622 by prominent on the corresponding wall of lateral margin, form the positive and negative transmission of borrowing motor 32 and the round rotating angle that can limit gearwheel 62, and then restriction irony rotating block 7 is adopted the angular way work of deciding that comes and goes.But irony rotating block 7 is to be the column casing shape and to have a tangent plane 72, and the axle center of gearwheel 62 is adopted eccentric point mode cover group and is fixed with it, and be that to be provided with outer magnet 71 absorption fixing on the tangent plane 72, and utilize on the irony rotary-cut piece 7 the anti-magnetic pole of tangent plane 72 absorption outer magnet 71 1 ends to and make it firm.Other be positioned at outer magnet 7 on the tangent plane 72 of irony rotating block 7 under, system is separated out a rhone 52 by 54 on a wall, hold and hold by leading of center wall groove 521 in this rhone 52 and be with a valve rod 8, be provided with inner magnet 81 in the top of this valve rod 8, and make the inner magnet 81 on the valve rod 8 corresponding with column casing perisporium 70 and outer magnet 71 on the irony rotating block 7, and by the positive and negative rotation of irony rotating block 7, impel 71 generations of inner magnet 81 and outer magnet active force that repels each other, or generation interattraction power between inner magnet 81 and irony rotating block 7 perisporiums, impel valve rod 8 thereby quilt priming up and down, and the underpart of valve rod 8 system is formed with the water stopping plug 82 that silica gel wraps moulding, just in time removed to open and close an osculum 55 by priming up and down by valve rod 8, sheaf space is rhone 52 places on the osculum 55, and rhone 52 lower end trough wall surfaces are provided with an effluent pipe mouth 522, connected a water conduction rubber hose 9 and sent outside the location, connect an intrinsic internal partition 83 correspondences by cell wall in the water stopping plug 82 root edge spaces of valve rod 8 again, these internal partition 83 both sides offer two water-guiding holes 831,832 and central authorities be provided with one and be fit to the groove 833 that stops that water stopping plug 82 presses down, this two water-guiding hole 831,832 hole area amounts to slightly big than water inlet 841, and being become, internal partition 83 stops that water stopping plug 82 presses down and the water conservancy diversion fluid enters 55 operations of valve rod 8 keying control osculums, to reduce the resistance that water stopping plug 82 presses down, wherein water inlet 841 is to be positioned on the valve block 84 1 side end walls, and valve block 84 1 corrects to colloid valve pad 840 and is coated, and, form corresponding up and down space with internal partition 83 and be collection indent 53 places for being clamped in the discharging mouth of pipe 421 places.Again, the other end of the water conduction rubber hose 9 of 522 sockets of effluent pipe mouth of rhone 52 system is connected to an arm water channel 44 that communicates with discharge pipe 42, impels 42 of rhone 52 and discharge pipes to constitute the associated ping of step-down discharging current in addition.

See also Figure 11, Figure 12, after high-pressure liquid water conservancy diversion to the water pipe 43 enters valve seat 4 inside, promptly can be from 841 current drainages of the water inlet on the valve block 84 to collection indent 53 than low pressure in.This moment is if go to drive the 7 generation turn displacements of irony rotating block by controlling motor 32 rotations, make the inner magnet 81 on the valve rod 8 borrow seat wall 54 non-contact mode at interval, form on the valve rod 8 very and interlock water stopping plug 82 removes to close osculum 55 by the perisporium 70 adsorbed (Figure 11) of irony rotating block 7.The water that collect indent 53 interior 841 introductions from the water inlet this moment can't be discharged from osculum 55, the pressure that causes collecting indent 53 inner fluids through the water inlet 84 guide functions and with intake pipe 43 equipressures, thereby isobaric whereby active force and packing valve block 84 paste at the discharging mouth of pipe 421 places, reaches the effect of fluid stopping.We have a look the situation when motor 32 counter-rotatings again, when driving the 7 turn displacements of irony rotating block by it, effect by slowing-down structure 6 interior powerful torsion, just the cambered surface that can borrow irony rotating block 7 perisporiums gradually away from and overcome the adsorption of 70 of inner magnet 81 and perisporiums, and then make the outer magnet 71 on the tangent plane 72 of irony rotating block 7 produce corresponding statess with inner magnet 81 on the valve rod 8, produce the powerful active force that repels each other, impel valve rod 8 to push downwards, break through the collection indent 53 inner high voltage fluids water stopping plug 82 of fending off and close the active force of osculum 55.Collect fluids in the indent 53 this moment and promptly arrive osculum 55 gradually through water-guiding hole 831,832 toward rhones 52 a surname's streams and go out, form the pressure state that a large amount of rows subtract collection indent 53 inner fluids, and then impel valve block 84 upper strata collection indents 53 interior hydrodynamic pressures to be lower than the pressure of fluid in valve block 84 lower floor's intake pipes 43, make valve block 84 up be pushed away floating (seeing Figure 12) by differential pressure action power, open the discharging mouth of pipe 421 and make high-pressure liquid following current in the intake pipe 43 to discharge pipe, form the current drainage effect.Wherein in the rhone 52 by the unlatching of osculum 55 the liquid that should flow, flow in the discharge pipe 42 with the guiding of water conduction rubber hose 9 through effluent pipe mouth 522, and then the relation that the amount of force far and near and its generation of the distance between strong magnet is inversely proportional to inside and outside the formation utilization, and the powerful lasting adsorption of the minimum distance behind the interattraction takes place between outer magnet in utilizing, continue osculum 55 in the cut-off valve, and the shortest initial pole pitch of doing the time spent of repelling each other between outer magnet in utilizing is interior and maximum repulsion force is removed the interior osculum 55 of open valve, keying control by osculum 55, impel the working fluid in valve block 84 interior or exterior spaces to form equipressure, close the discharging mouth of pipe 421, and non-equipressure, open the discharging mouth of pipe 421, and so as to the difficult problem of the open-close on-off of the valve that overcomes high-pressure liquid, form osculum 55 in a kind of contactless powerful active force keying valve that utilizes between strong magnet, equipressure/pressure reduction state inside and outside the generation valve block 84 reaches and utilizes fluid pressure difference to open and close the practical effect of valve block 84.

Claims (10)

1, a kind of low-power electro-magnetic valve, comprise with valve rod and valve block being that important document constitutes the valve body of controlling working fluid discharging and fluid stopping valve, the valve seat of settling valve body, it is characterized in that producing contactless suction in addition, scold active force with outer magnet in switch valve permanent and mobile outer magnet position power transmission system with the positive and negative force direction of inhaling mutually, repel each other between outer magnet in changing, and the suction between outer magnet in being subjected to, scold the tooth-shape structure of round position of qualification outer magnet turn displacement of the effect of active force, inner magnet is installed in the top of valve rod.

2, according to the described electro-magnetic valve of claim 1, it is characterized in that power transmission system comprises motor that can forward and reverse rotation, the reducing gear that becomes transmission to connect with this motor, the outer magnet of two phase different poles is installed on the reducing gear, this two outer magnet is driven by motor and reducing gear and does to come and go the location and move, and becomes to continue contactless suction, scolds the active force connection with inner magnet on the valve rod.

3, electro-magnetic valve according to claim 2, it is characterized in that utilizing motor and slowing-down structure to drive outer magnet comes and goes in the displacement formation, system adopts worm screw to come and go the slowing-down structure that moving slider or worm screw come and go mobile tooth sector or pinion gearwheel to constitute, and the magnetic patch system of phase different pole adopts and waits displacement to concern the position having slide block that metallic material makes or effective priming of gear or rotating block admittedly apart from group on the outer magnet.

4, electro-magnetic valve according to claim 1, it is characterized in that the valve rod bottom molds a water stopping plug, in the valve body pedestal osculum is arranged, this osculum bottom surface forms the collection indent, contactless in valve rod is driven between outer magnet inhale mutually, scold active force and make water stopping plug become switch connection with osculum, and the fluid in the collection indent is opened and closed valve through opening or closing of osculum with high-pressure liquid formation pressure reduction/equipressure in the intake pipe.

5, electro-magnetic valve according to claim 4, it is characterized in that in the corresponding priming distance under the water stopping plug of valve rod bottom, be provided with an internal partition, this internal partition dual-side all is equipped with water-guiding hole, its central corresponding water stopping plug depressed position is provided with groove, and formation can stop that water stopping plug is pressed down by repulsion and reduces the guide functions of pressure resistance under the water stopping plug.

6, electro-magnetic valve according to claim 4, it is characterized in that valve rod be driven in non-contact active force priming water stopping plug between outer magnet and the switch connection of osculum, the powerful lasting adsorption that takes place between outer magnet in being meant to inhale mutually when being in minimum distance after moving continues to close osculum, and when opening osculum in the shortest initial pole pitch of doing the time spent that repels each other between interior outer magnet and under the maximum repulsion force.

7, electro-magnetic valve according to claim 2 is characterized in that the relative shift between phase different pole and inner magnet on the outer magnet, be by on the helical pitch of worm screw or the gear wall etc. the arc groove wear fixedly the amount of moving of revolving of bumping post and controlled.

8, a kind of method of making low-power electro-magnetic valve is characterized in that utilizing contactless active force between permanent strong magnet with switch valve; And utilize mobile outer magnet position change permanent in suction mutually, the positive and negative force direction that repels each other between outer magnet, and be able to the switching motion that the priming valve rod is controlled valve; Simultaneously, also by the suction between interior outer magnet, scold active force and force the inside and outside tooth body in the tooth-shape structure of outer magnet turn displacement to protect effective engagement driving position forever.

9, described according to Claim 8 method, it is characterized in that between said permanent strong magnet contactless suction, to scold active force be to control the power resources that valve continue to open and close, and lower powered consumption is to belong to controlling positive and negative rotation of motor and the interlock outer magnet produces the required of short duration electric power source of displacement.

10, described according to Claim 8 method is characterized in that effective engagement driving position, means that helical pitch Origin And Destination place in the tooth-shape structure protects the state that is meshed of bidentate body all forever.

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