CN2141490Y

CN2141490Y - Electric pulse triggering electromagnetic valve

Info

Publication number: CN2141490Y
Application number: CN 92221966
Authority: CN
Inventors: 彭德康
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-12-29
Filing date: 1992-12-29
Publication date: 1993-09-01
Anticipated expiration: 2002-12-29

Abstract

The utility model discloses an electromagnetic valve for gas distribution systems. The lower end of a valve core is orderly and fixedly sheathed with an armature and a permanent magnetic ring, an excitation coil is embedded on the lower end of a valve cap made of magnetic material, and otherwise a micro switch is arranged on the side wall of the valve cover. The electromagnet valve has the advantages of simple structure, small size, sensitive response, quick operation, high safety, less power consumption, and energy saving, and is a product replacing the older generation in the gas distribution systems.

Description

Electric pulse triggering electromagnetic valve

The utility model relates to the Automatic Control Component of using on a kind of gas piping, is particularly suitable for using on the gas-fired boiler.

Present existing solenoid valve can be divided into " normal closed type " and " open type " two classes substantially." normal closed type " is to open valve with energising, and the mode of outage throttle down is come work; " open type " is to come work with energising throttle down, the mode of opening valve of cutting off the power supply.Therefore use this two classes solenoid valve all must continued power, and operating voltage also than higher (24～220V), tens of watts of power consumption, the place of unregulated power can not use, and uses in the household electrical appliances to bear down again.This two classes solenoid valve is all heavy simultaneously, and price is very expensive again.And they generally all use civil power, as be used in can be very dangerous in the gas distribution system, gas network.Solenoid valve from the automatic gas-cutting off device of high-grade gas water-heater of Japanese import in addition, be to use the manual unlocking valve, in the spring of compression on the spool, but and the armature on the spool is pushed into the position of electromagnet adhesive, keep the open mode of valve by electromagnetic actuation.After outage, armature loses the suction-combining force of electromagnet, and spool cuts off source of the gas by the spring reset throttle down.Yet this solenoid valve needs 0.16A in the minimum current of adhesive armature, and an economize on electricity stream can only be with 20～30 hours.Therefore this solenoid valve can only be used for water heater, can not be used for gas-fired boiler.

The purpose of this utility model is to avoid above-mentioned deficiency of the prior art, and a kind of reliable operation is provided, and is quick on the draw, is swift in motion, safe and reliable, little power consumption, cost be low, can be widely used in the electrical pulse trigger type solenoid valve of gas distribution system, gas network.

The utility model is realized by following measure: this solenoid valve is made up of valve body, valve gap, spool.Its main technical schemes is at first on the cylindrical of the lower end of spool, is wearing the magnetosphere that permanent-magnet material is made, and it and this cylindrical are fixed together.Allow the magnetic pole of permanent magnetism circle be in the both ends of the surface of permanent magnetism circle respectively simultaneously.And on this cylindrical, be positioned at below the permanent magnetism circle.Also fixing an armature ring.There is a circular groove lower end of its two valve gaps of making at magnetic material.In this circular groove, embedding field coil.It three also is coated with Returnning spring for valve core reset in the upper end of spool by upper and lower spring seat.

The utility model can also be in the side of valve gap, is positioned on the height and position of lower spring cup to be drilled with a through hole, and loads onto a sensitive switch that is subjected to the control of lower spring cup bump.

The utility model also can be installed the seal dissepiment that a cross section is the W type in the valve body chamber.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the structural drawing that first kind of embodiment of the utility model is in opening state.

Fig. 2 is the structural drawing of first kind of embodiment's closed condition of the utility model

Fig. 3 is second kind of embodiment's of the utility model a structural drawing.

Fig. 4 is the third embodiment's of the utility model a structural drawing.

The utility model is described in further detail below in conjunction with embodiment: as Fig. 1 and Fig. 2, this solenoid valve is by valve body (1), valve gap (2), spool (3), handle (4), upper spring seat (5), lower spring cup (7), Returnning spring (6), O RunddichtringO compositions such as (11).Have the import and the outlet of combustion gas on the valve body (1), also have an inner chamber to constitute the passage of import and outlet in it.Spool (3) becomes the step axle, and the lower end is tapered.Be with O RunddichtringO (11) at the axle journal place of spool (3).On the cylindrical between two axle journals of spool (3), fixing that permanent-magnet material makes, its magnetic pole is positioned at the permanent magnetism circle (9) of upper/lower terminal face and is positioned at armature ring (10) below the permanent magnetism circle (9).Top cylindrical at spool (3) is coated with Returnning spring (6).Limit by the upper spring seat (5) that links together with valve gap (2) with lower spring cup (7) that spool (3) links together respectively at the two ends up and down of Returnning spring (6).The upper tip of spool (3) is equipped with handle (4).Valve gap (2) is made with magnetic material, and the endoporus that slides for spool (3) is arranged in the middle of it, and the lower end has circular groove, is putting field coil (8) in groove.More than be first kind of embodiment of the present utility model.As Fig. 3 is on the sidewall of valve gap (2), and the height and position place that is positioned at lower spring cup (7) is drilled with a through hole, loads onto the sensitive switch (12) that can be subjected to lower spring cup (7) control, just can constitute second kind of embodiment of the present utility model.As Fig. 4 is on second kind of embodiment's basis, loads onto the seal dissepiment (13) that the cross section is the W type in valve body (1) inner chamber, with the cancellation of the O RunddichtringO on the spool (3), has just formed the third embodiment of the present utility model simultaneously.

It is to work like this that this solenoid valve is contained in the gas distribution system, gas network.Adopt the manual unlocking valve, grasp handle spool is upwards drawn.In the process of upwards drawing, spring on the spool is compressed spool is produced downward spring recovery pressure on the one hand, allow end in contact under the upper-end surface of the permanent magnetism circle on the spool and the valve gap on the other hand, make the armature on the closed pair spool of magnetic field produce the bigger the suction-combining force that makes progress, act on the suction-combining force on the spool this moment greater than acting on the spring reset pressure on the spool and the gravity sum of spool self.Make this valve like this after loosing one's grip, can hold the armature ring by the permanent magnetism circle and make spool keep opening state.Need close this when closing, only need external control circuit to provide a pulsewidth greater than 1/4 second the electrical pulse or the direct current in 1/4 second to being positioned at field coil on the valve gap.Then the electromagnetic field of field coil generation can be cut down the magnetic intensity that the permanent magnetism circle is produced, and the permanent magnetism circle is reduced to less than the spring reset pressure that acts on the spool the suction-combining force of armature.So spool just moves downward under the effect of spring reset pressure and self gravitation.This moment, the gap of permanent magnetism circle and valve cover chamber was increasing, and the suction-combining force of permanent magnetism circle also sharply descends.And spool is just under the effect of spring reset pressure, promptly valve is maintained the hermetically closing state, if on the valve gap sidewall, set up a sensitive switch, like this when manually driving valve when the permanent magnetism circle contacts with the valve gap lower end surface, lower spring is the pressing sensitive switch just in time, makes the normally opened contact closure.So control circuit and field coil are connected, and perform the preparation that will close this valve.When control circuit is carried electric current according to signal to field coil, when then the suction-combining force of permanent magnetism circle reduces to allow spool move downward, lower spring cup can be decontroled sensitive switch again, allow control circuit and field coil disconnect and the cut-out exciting curent, make the actual electricity consumption time be not more than 1/4 second, reach purpose of saving.

The utility model has following advantage compared to existing technology:

This magnetic valve not only simple in structure, volume is little but also be swift in motion, reliable operation can be finished the work of dying automatically in 1/4 second. Its little power consumption is saved the energy simultaneously, is the regeneration product of existing magnetic valve in gas furnace and the water heater.

Claims

1, a kind of electrical pulse trigger type solenoid valve of forming by valve body (1), valve gap (2) and spool (3), it is characterized in that on the lower end cylindrical of spool (3), wearing the permanent magnetism circle (9) that permanent-magnet material is made, and it and this cylindrical are fixed together, allow the magnetic pole of permanent magnetism circle (9) be in its both ends of the surface respectively simultaneously; And on this cylindrical, be positioned at below the permanent magnetism circle (9), also fixing an armature ring (10); In the lower end of closing lid (2) that magnetic material is made a circular groove is arranged in addition, in this circular groove, embedding field coil (8); Upper end at spool (3) also is coated with the Returnning spring (6) that resets for spool (3) by upper and lower spring seat (5,7).

2, according to the said electrical pulse trigger type of claim 1 solenoid valve, the side that it is characterized in that valve gap (2), be positioned on the height and position of lower spring cup (7) and be drilled with a through hole, and load onto a sensitive switch (12) that is subjected to the control of lower spring cup (7) bump.

3, electrical pulse trigger type solenoid valve according to claim 1 and 2 is characterized in that can installing the seal dissepiment (13) that a cross section is the W type in the inner chamber of valve body (1).