CN2363147Y

CN2363147Y - Pulse electromagnetic gas valve

Info

Publication number: CN2363147Y
Application number: CN 99230724
Authority: CN
Inventors: 彭德康
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-01-08
Filing date: 1999-01-08
Publication date: 2000-02-09
Anticipated expiration: 2009-01-08

Abstract

The utility model discloses an electromagnetic valve used in a gas distribution system. A magnetic assembly composed of a valve cover, a permanent magnet ring piece, a magnetic core and a magnetic yoke is arranged on a valve core, and simultaneously, an excitation coil is sheathed on an external cylinder of the magnetic core and a tubular external cylinder of the magnetic yoke. In addition, a sealed diaphragm is sheathed on a ball head at the lower end of the valve core. The electromagnetic valve has the advantages of simple structure, small size, sensitive response, quick action, good tightness, no leakage, high safety, less power consumption, and energy saving and is a novel product in the gas distribution system.

Description

The pulse electromagnetic air valve

The utility model relates to the Automatic Control Component of using on a kind of gas piping.It is applicable on fuel gas pipeline and the gas-fired boiler and uses.

Present existing electromagnetic gas valve all is to drive valve with energising, and the mode of outage pass valve is worked.So just being under the long "on" position, electromagnetic gas valve works.Can cause electromagnetic gas valve power consumption big like this, the coil heating amount is many, and working long hours makes the coil easy burn-out.Thereby can not guarantee the proper functioning of related system.It two is not adopt isolating seal between the space of air chamber and valve rod of existing solenoid valve, and valve is when unlatching like this, and the combustion gas meeting causes leakage by the movement clearance of air chamber through between valve rod.And existing electromagnetic gas valve volume is bigger, is subjected to very much the restriction of spatial position during installation, and price is very expensive again.Therefore be difficult to be promoted the use of in practice.

The purpose of this utility model is to avoid deficiency of the prior art, and a kind of little power consumption, reliable operation be provided, be quick on the draw, be swift in motion, good airproof performance, never leak, volume is little, cost is low, can widely used pulse electromagnetic air valve.

The utility model is realized by following measure: this solenoid valve is made up of valve body, spool, valve pocket, middle connecting cover, valve gap and neoteric helix tube type impulse mgnet.Wherein the main technical schemes of helix tube type impulse mgnet is to fixedly mount valve gap in the upper end at valve pocket at first, is fixedly mounting a yoke in the lower end of valve pocket.Simultaneously a rare-earth permanent magnet circular ring plate is set, below the permanent magnet circle ring sheet, is provided with magnetic core again in the lower end of valve gap.Allow the lower end surface of valve gap and the upper-end surface of magnetic core that the permanent magnet circle ring sheet is clamped, and become one with valve gap.It two is set on field coil on the tubulose outer cylinder of the little outer cylinder of magnetic core and yoke simultaneously, and allows field coil be positioned among the endoporus of valve pocket.Its three spool passes from the endoporus of yoke, the lower end Joint of its upper end and the pull bar of the endoporus that passes valve gap, permanent magnet circle ring sheet, magnetic core successively.It four is that the lower end of spool is bulb, and the seal dissepiment that a cross section is " W " type is housed on bulb.Pass through between the upper and lower spring seat end face spring for valve core reset to be installed at the middle part of pull bar at last.

The utility model can also put a seal dissepiment that is corrugated tube shape on the bulb of the lower end of spool.

Can also be placed between the interior hole end surface of the pressure ring of spool lower end and yoke for the spring of valve core reset in the utility model.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the structural drawing that the utility model is in opening state.

Structural drawing when Fig. 2 is the utility model employing sylphon seal barrier film.

Fig. 3 is the structural drawing that the utility model adopts the electrical pulse bi-directional drive.

The utility model is described in further detail below in conjunction with embodiment: this solenoid valve mainly is made up of valve body (1), spool (4), valve pocket (6), middle connecting cover (3), valve gap (7) and helix tube type impulse mgnet (5).Wherein have suction port and air outlet on the valve body (1), also have the inlet/outlet passage that constitutes by inner chamber in it.Middle connecting cover (3) be positioned at valve body (1) above.Valve pocket (6) be positioned in the middle of connecting cover (3) above.Valve gap (7) be positioned at again valve pocket (6) above.Helix tube type impulse mgnet (5) is to be made of rare-earth permanent magnet circular ring plate (5-1), magnetic core (5-2), field coil (5-3), yoke (5-4).Yoke (5-4) be positioned at valve pocket (6) and with the lower end Joint of valve pocket (6).And the lower end of valve gap (7) is provided with a rare-earth permanent magnet circular ring plate (5-1), below it, be provided with magnetic core (5-2) again, allow the lower end surface of valve gap (7) and the upper-end surface of magnetic core (5-2) that permanent magnet circle ring sheet (5-1) is clamped, and become one with valve gap (7).And field coil (5-3) is set on simultaneously on the tubulose outer cylinder of the little outer cylinder of magnetic core (5-2) and yoke (5-4), and allow field coil (5-3) be positioned among the endoporus of valve pocket (7), the lower end of spool (4) is the bulb shape, and the seal dissepiment (2) that a cross section is " W " type is housed on bulb.The upper end of spool (4) is passed with the lower end of the pull bar (10) that passes valve gap (7), permanent magnet circle ring sheet (5-1), magnetic core (5-2) successively affixed from the endoporus of yoke (5-4).Between the end face of the middle part of pull bar (10), lay the spring that resets for spool (4) by last movable spring seat (9) and following fixing spring seat (8).In pull bar (10) upper end handle (11) is housed in addition.This is first kind of embodiment of the present utility model, as shown in Figure 1.Change " W " type seal dissepiment (2) among Fig. 1 into be corrugated tube shape seal dissepiment (13) as Fig. 2, just constitute second kind of embodiment of the present utility model.As Fig. 3 is that Returnning spring (12) is placed between the hole end surface of the retaining ring (14) that is positioned at spool (4) lower end and yoke (5-4).Simultaneously spool (4), magnetic core (5-2), yoke (5-4) and field coil (5-3) are extended, and allow the top of spool (4) be external conical shape, and open step hole in the bottom of magnetic core (5-2).Make this step hole can hold the cone on spool (4) top.Also be provided with the seal arrangement of forming by pressure ring (17), gland (15) and O-ring seals (16) in addition on the top of the valve gap (7) of this valve.So just formed the third embodiment of the present utility model.

It is to work like this that this solenoid valve is contained in the pipe network system: can adopt the manual unlocking valve, grasp handle spool is upwards drawn.In the process of upwards drawing, the spring on the spool is compressed spool is produced downward elastic force on the one hand; The upper-end surface of valve core is more and more near the lower end surface of magnetic core on the other hand, the magnetic resistance in the closed-loop path, magnetic field of permanent magnet significantly reduced, thereby spool is produced bigger upwards the suction-combining force.Act on the suction-combining force on the spool this moment greater than acting on the elastic force on the spool and the gravity sum of spool.Make this valve like this after loosing one's grip, can hold spool by permanent magnet and keep opening state.In the time of need closing this valve, only need external control circuit to provide a pulsewidth greater than 1/10 second electrical pulse, then the electromagnetic field that produces of the field coil magnetic intensity that can cut down permanent magnet to field coil.Make permanent magnet be reduced to less than the spring force that acts on the spool to the suction-combining force of spool.So spool just moves downward under the effect of spring.Gap between spool upper-end surface and magnetic core lower end surface is increasing at this moment, and permanent magnet also sharply descends to the suction-combining force of spool.And spool promptly maintains valve the hermetically closing state just under the effect of spring reset pressure and gravity.Also can provide a reverse electrical pulse to field coil in addition, then the electromagnetic field of field coil generation can strengthen the magnetic intensity of permanent magnet.Make permanent magnet to the suction-combining force of spool greater than acting on the elastic force on the spool and the gravity sum of spool.Held by permanent magnet so spool moves upward, make valve keep opening state.

The utility model has following advantage compared to existing technology: this magnetic valve is simple in structure, volume not only Little, anufacturability good, and be swift in motion, reliable operation, sealing by force, never leak, can 1/4 Automatically finish the work of break-make gas in second planting, power consumption is few, and coil generates heat never and burnt, and is a kind ofly both to save Economize again fully reliable update electromagnetic gas valve of the energy.

Claims

1) a kind of by valve body (1), spool (4), valve pocket (6), middle connecting cover (3), the pulse electromagnetic air valve that valve gap (7) is formed, it is characterized in that having set up a helix tube type impulse mgnet (5), this impulse mgnet (5) at first is to fixedly mount valve gap (7) in the upper end of valve pocket (6), fixedly mounting a yoke (5-4) in the lower end of valve pocket (6), simultaneously a rare-earth permanent magnet circular ring plate (5-1) is set in the lower end of valve gap (7), below permanent magnet circle ring sheet (5-1), be provided with magnetic core (5-2) again, allow the lower end surface of valve gap (7) and the upper-end surface of magnetic core (5-2) that permanent magnet circle ring sheet (5-1) is clamped, and become one with valve gap (7); It two is set on field coil (5-3) on the tubulose outer cylinder of the little outer cylinder of magnetic core (5-2) and yoke (5-4), and allows field coil (5-3) be positioned among the endoporus of valve pocket (6); Its three spool (4) passes from the endoporus of yoke (5-4), the lower end Joint of its upper end and the pull bar (10) of the endoporus that passes valve gap (7), permanent magnet circle ring sheet (5-1), magnetic core (5-2) successively; It four is that spool (4) lower end is bulb, and the seal dissepiment (2) that a cross section is " W " type is housed on bulb; Pass through between the end face of upper and lower spring seat (9,8) spring (12) that resets for spool (4) to be installed at the middle part of pull bar (10) at last.

2) impulse electromagnetic valve according to claim 1 is characterized in that can put one on the lower end bulb of spool (4) is undulatory seal dissepiment (13).

3) pulse electromagnetic air valve according to claim 1 and 2 is characterized in that can being placed between the hole end surface of the pressure ring (14) that is positioned at spool (4) lower end and yoke (5-4) for the spring (12) that resets of spool (4).