CN2089098U

CN2089098U - Rotating type electromagnetic valve

Info

Publication number: CN2089098U
Application number: CN 90222664
Authority: CN
Inventors: 徐正惠
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-10-25
Filing date: 1990-10-25
Publication date: 1991-11-20

Abstract

The utility model discloses a rotary electromagnetic valve belonging to the field of autocontrol actuators, which is composed of a valve core (5), a stator (9), a rotor (6), windings (10), a valve body (8), a valve cap (11) and a valve cap (12). The stator has a plurality of magnetic poles; each of the magnetic poles is provided with a control winding; the windings of two magnetic poles whose radial directions are opposite are connected in series to form a phase; the ends of the magnetic poles of the stator extend to the inside of the valve caps; the outside of the valve caps are the windings; the rotor has a plurality of teeth; the width of the teeth is equal to the width of the pole shoes of the stator; the valve core is connected with the rotor. When the windings of the stator are switched on in turn, the valve core is driven to rotate by the rotor, so the adjustment of the switch and the degree of the opening of a valve are realized. The rotary electromagnetic valve is an ideal actuator of an open-loop control system. Compared with a closed loop system composed of other servo elements, the rotary electromagnetic valve can omit a feedback transducer, an amplifier, an integrator, an analog-to-digital convertor, etc. The utility model has the advantages of simple structure, stable performance and low cost.

Description

Rotating type electromagnetic valve

The utility model relates to rotating solenoid valve, belongs to control final controlling element field automatically.

At present general solenoid valve is the switching that relies on the moving iron core of electromagnetic attracting force to move to realize valve.The aperture of this class solenoid valve is non-adjustable, and opening and closing speed is slower, and noise is also bigger.The model utility of inventor Wen Bangyan " three-position electromagnetic valve " (notification number 85205140) provides the technology with two winding control electromagnetic valve, thereby solenoid valve is had than small flow, and three kinds of possible states such as standard-sized sheet and full cut-off have been realized the adjusting of aperture.Since remain the switching that realizes valve of moving that relies on electromagnetic force driving spool, the speed of this solenoid valve, performance improvements such as noise are little, and aperture is regulated also inconvenient.In order further to improve the performance of solenoid valve, the purpose of this utility model provides a kind of electromagnetic force that relies on and realizes the switching of solenoid valve and the rotating solenoid valve that aperture is regulated apart from spool is rotated.

Rotating solenoid valve provided by the utility model is characterized in that it is made up of spool, stator, rotor, control winding, valve body, valve gap and drive circuit.Stator has a plurality of magnetic poles, and number of magnetic poles is an even number, is wound with the control winding on each magnetic pole, and the windings in series of two radially relative magnetic poles gets up to form a phase, and the number of phases of stator is half of number of magnetic poles.The pole end piece of stator embeds in the valve gap, and winding is on the magnetic pole partly of valve gap outside.Rotor has a plurality of teeth, and the number of teeth of rotor and the number of magnetic poles of stator match.It is wide that the width of each tooth of rotor equals the stator magnet pole shoe, but do not have winding.Rotor and the coaxial installation of stator, when each phase winding of rotor passed to electric current successively, the caused reaction moment of rotor quadrature-axis reluctance and direct axis reluctance difference just made the rotor rotation.Spool links together through upper and lower strut and rotor, by two bearings that are fixed on the valve gap, when rotor rotated under winding current drives, spool rotated thereupon, so just realized the switching of valve and the adjusting of aperture, the driving current of rotor winding is provided by drive circuit.The principle that rotor described in the utility model rotates under the staor winding Current Control is identical with the working principle of reaction stepping motor.

The number of magnetic poles of stator described in the utility model is 6 or more some more, and correspondingly the number of teeth of rotor is 4 or more some more.

Feature of the present utility model is that spring is housed above the rotor, and spool relies on spring force to be pressed on the valve body to guarantee closing of valve, prevents to leak.Because this pressure overcomes bigger friction torque with need during the rotation of rotor banding movable valve plug.For this reason, feature of the present utility model is that the plane at rotor place is more lower slightly than the plane at stator place, and first spool is mentioned again of electromagnetic force rotates according to next distribution of clapping winding current during the winding energising, and the required friction torque that overcomes is just less.Rotor plane is generally than low 1 millimeter-10 millimeters of stator plane.

Feature of the present utility model is that rotor and stator are made by ferromagnetic substance, and valve gap, connecting rod are made by Nonferromugnetic material.

The utility model is compared with at present general solenoid valve, and have the following advantages: (1) according to the difference of the umber of pulse of input driving circuit, spool can rotate to different positions, accurate positioning, thus realized the adjusting of aperture.(2) switching of valve, the adjusting of aperture is controlled by pulse signal, is convenient to be used with electronic computer.(3) noise is low.(4) speed height.(5) can constitute solenoid valves such as threeway, four-way easily as long as change the structure of spool and valve body.(6) structure is simpler than the solenoid valve that has pilot valve.Constitute open-loop control system with the utility model as final controlling element, compare, can save feedback transducer with the closed-loop system that adopts other servoelements to form, amplifier, integrator and analog-digital converter etc., thus make system architecture simple, stable performance, with low cost.

Fig. 1 is the sectional drawing according to the rotating solenoid valve that the utility model proposes.Wherein (1) is upper bearing (metal), and (2) are lower bearing, and (3) are last connecting rod, and (4) are lower link, and (5) are spool, and (6) are rotor.Lower link (4), last connecting rod (3), spool (5) are connected with screw or bolt with rotor (6), are supported by metal (upper (1), (2).Metal (upper (1), (2) are fixed on the valve gap.(7) be spring, use so that spool is pressed into valve body (8) with certain pressure.(9) be stator, (10) are the control winding on the magnetic pole of the stator.(11) be bonnet, (12) are bottom flange, and the pole end piece of stator is in valve gap embeds valve, and winding is on the magnetic pole partly of valve gap outside.Last bottom flange bolt.Arrow is represented the flow direction of medium among Fig. 1.(13) be following Leak hole, in order to discharge the medium that is trapped under the spool to pipeline, (14) are an one-way valve, enter medium in the valve gap in order to discharge.Fig. 2 is the sectional drawing of spool (5).(15) are the sealing layer that is coated on outside the spool among the figure, and spool is a column, and its bottom surface diameter is slightly less than the upper bottom surface diameter, thereby makes it that certain gradient be arranged.(16) be the spool perforate, in order to make the medium circulation when the valve open.

Fig. 3 is the assembling relationship figure of rotor (6) and stator (9).The stator that drawn among the figure has 6 magnetic poles, and rotor correspondingly has the situation of 4 magnetic poles.(17) are magnetic pole of the stator among the figure, and (18) are rotor tooth.6 windings on the stator are formed 3 phases, and winding B forms one mutually with b, and D forms second mutually with d, and E and e form third phase.Fig. 4 is that winding three-phase six is clapped under the situation of energising, and next claps the schematic representation of rotor-position.Fig. 5 is the drive circuit block diagram of control rotor rotation.CP is an input pulse among the figure, and this pulse footpath pulsqe distributor converts the electrical pulse (m is the stator number of phases in the formula) that and phase difference identical with the stator number of phases equal 2 π/m to and make the winding energising then after analog line driver amplifies, and drives rotor rotation.The angle that input pulse number decision rotor turns over, thus make valve that certain aperture be arranged.Valve just changeed when L was rotor clockwise and anticlockwise control signal, high level, reversed during low level.

The working procedure of rotating solenoid valve is as follows: valve closing when establishing original state, making L is high level, import several pulses, this pulse switches on each phase winding of stator through drive circuit successively, and electromagnetic attracting force rotor, rotor lift spool slightly, turn over certain angle by umber of pulse, electromagnetic force disappears behind the end-of-pulsing, and spool is pressed to valve body under the spring force effect, so solenoid valve just is in the state of certain aperture.When closing solenoid valve, should make L is low level, the pulse of input similar number, and solenoid valve promptly is returned to the original state of cutting out.

Utilize technology provided by the utility model can constitute the solenoid valve of all size, also can replace mortor operated valve.Two-way electromagnetic valve with 12 millimeters of inside nominal diameters is that example illustrates enforcement of the present utility model below.At this moment stator can adopt the sextupole three-phase structure, and rotor is four toothings.Fig. 6 is the sectional drawing of stator.80 millimeters of stator outer circumference diameter, extremely wide 10 millimeters, thick 12 millimeters of stator, 30 millimeters of magnetic pole inward flange diameters.Fig. 7 is the sectional drawing of rotor, 28 millimeters of rotor diameters, and 10 millimeters of the facewidth, thick 12 millimeters of rotor, four holes are in order to fixing upper and lower strut among the figure.The staor winding electric current is 1 ampere.Fig. 8 is the spool sectional drawing, and spool is high 36 millimeters, 20 millimeters of spool upper base diameters, 16 millimeters of the diameters of going to the bottom, 12 millimeters of latus rectums.The horizontal position of rotor can be regulated by plus-minus pad between lower link and rotor, and the rotor horizontal position is lower 4 millimeters than stator.Valve gap divides two joints up and down, following half-section valve gap is screwed after on the valve body, and stator embeds in six recessed mortises of half-section valve gap down, spool, connecting rod, rotor is installed then, is adjusted rotor level, vertical position, install the half-section valve gap thereupon again, connect with bolt and go up bottom flange.Valve gap, connecting rod, spool are made with Nonferromugnetic materials such as stainless steel or copper, and stator and rotor are built up by silicon steel plate.

Fig. 9 is the driving circuit for electromagnetic valve schematic diagram.(19) are pulsqe distributor among the figure, and (20) are analog line driver, and (21) are the winding on the stator.This circuit is the three-phase six-beat working method.

Claims

1, rotating solenoid valve is characterized in that it includes spool (5), stator (9), rotor (6), control winding (10), valve body (8) and valve gap (11), (12); Stator has a plurality of magnetic poles (17), has winding (10) on each magnetic pole, and the windings in series on the two radially relative magnetic poles gets up to form a phase; Footpath, the end valve gap of magnetic pole of the stator embeds in the valve gap, and winding is on the magnetic pole partly of valve gap outside; Rotor has a plurality of teeth, and it is wide that the facewidth equals the stator magnet pole shoe, no winding; Stator and rotor coaxial are installed, and spool (5) is supported by metal (upper (1), (2) after upper and lower strut (3), (4) link with rotor (6).

2, rotating solenoid valve according to claim 1 is characterized in that stator has 6 or more a plurality of magnetic pole, and correspondingly rotor has 4 or more a plurality of tooth.

3, rotating solenoid valve according to claim 1 is characterized in that rotor (6) and stator (9) make by ferromagnetic substance, last bottom flange (11), (12), and upper and lower strut (3), (4) are made by Nonferromugnetic material.

4, rotating solenoid valve according to claim 1 is characterized in that the mounting plane low certain distance of the mounting plane of rotor (6) than stator (9), and the optimum value of this distance is the 1-10 millimeter.

5, rotating solenoid valve according to claim 1 is characterized in that spring (7) is housed above the rotor (6), and this spring is pressed on spool in the valve body.