CN201377590Y

CN201377590Y - Self-holding electromagnetic valve

Info

Publication number: CN201377590Y
Application number: CN200920126847U
Authority: CN
Inventors: 王树先
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-30
Filing date: 2009-03-30
Publication date: 2010-01-06
Anticipated expiration: 2019-03-30

Abstract

The utility model relates to a self-holding electromagnetic valve, which comprises a valve body, two independent coils and two independent electromagnetic heads, wherein one coil controls opening of the valve body, the other coil controls closing of the valve body, and a ring-shaped groove is arranged on the middle section of a movable core inside the electromagnetic head of the number one coil. When the number one coil is instantly electrified and attracted, the ring-shaped groove is opposite to the end of a movable core inside the electromagnetic head of the number two coil, and the movable core enters the groove through spring force, then the movable core with the ring-shaped groove can not reset after electricity is cut off, a pilot valve port is opened, and self-holding is started. When the number two coil is instantly electrified, the movable core is attracted, the movable core with the ring-shaped groove can reset through a spring to close the pilot valve port, then after the electricity of the number two coil is cut off, the movable core with the ring-shaped groove is in reset state, and then self-holding is closed.

Description

A kind of self-holding electromagnetic valve

Technical field

The utility model belongs to the solenoid valve technical field.

Background technique

What self-holding electromagnetic valve usually adopted all is that electromagnet, permanent magnet and spring are formed mutual interlocking gear, need usually to rely on to continue energising and could keep working state, if existence is artificially or during the accident power-off situation like this, and can't proper functioning, but also relatively take.China Patent No. 03221378.6 discloses a kind of self-holding electromagnetic valve that has the self-closing function that cuts off the power supply, it comprises the solenoid valve and the collecting of electrical controls, it has increased the collecting of electrical controls on the basis of existing solenoid valve, solenoid valve is cut off the power supply under any opening state by any way all will close solenoid valve automatically.But,, increased rate of fault and fault point very significantly because this structure has increased the collecting of electrical controls.In addition, the solenoid valve of this structure has partly increased permanent magnet, and is different fully with the utility model self-holding electromagnetic valve control structure.

Summary of the invention

The purpose of this utility model is the deficiency at the prior art existence, a kind of self-holding electromagnetic valve is proposed, by two independently coil and two Electrical heads independently are set, a coil control valve body is opened, another coil control valve body is closed, do not need complicated control circuit, strengthen the flexibility and the reliability of valve.

The technical solution of the utility model is as follows:

A kind of self-holding electromagnetic valve, include valve body, Line 1 circle and No. 1 Electrical heads, described Line 1 circle and No. 1 Electrical heads are vertically mounted in the no magnetic tube of valve body upper end, No. 1 moving iron core lower end of No. 1 Electrical heads is positioned on the poppet port path of solenoid valve, No. 1 moving iron core relies on the reposition force of a spring to turn-off poppet port, relies on back No. 1 fixed core of the instantaneous energising of Line 1 circle that its suction-combining force is opened the poppet port path; Described solenoid valve also has No. 2 coils and No. 2 Electrical heads, and No. 2 coils and No. 2 Electrical heads are vertically mounted on the no magnetic tube, and the front end of No. 2 moving iron cores of No. 2 Electrical heads relies on No. 2 spring forces vertically to be against on the sidewall of No. 1 moving iron core; Have a ring groove in the stage casing of described No. 1 moving iron core, the ring groove width is slightly larger than the front end width of No. 2 moving iron cores, when the instantaneous energising of Line 1 circle, at No. 1 moving iron core and after moving upward by adhesive, the front end of No. 2 moving iron cores relies on spring force to enter in the described ring groove, No. 1 moving iron core can not be resetted after dead electricity, promptly keep the open state of poppet port.When No. 2 instantaneous energisings of coil, No. 2 moving iron cores are by adhesive, and the front end of No. 2 moving iron cores withdraws from ring groove, and after the Line 1 circle dead electricity, No. 1 moving iron core is by spring reset, and closes poppet port, and behind this moment No. 2 coil losing electricities, No. 1 moving iron core still can be in reset mode.Such two coils are as long as instantaneous energising respectively can be opened poppet port or be closed poppet port, and as long as instantaneous current"on"time is respectively greater than 0.5 second.

The advantage of this self-holding electromagnetic valve is:

1, this self-holding electromagnetic valve is two fully independently coil controls, and is simple in structure.

2, because Line 1 circle and No. 2 coils all just can reach the purpose of opening and closing valve with instantaneous energising, owing to the instantaneous energising of coil, energy saving;

3, because coil electrify time only needs 0.5 second, just reach self-sustaining purpose, so can not burn coil;

4, reliability and flexibility height.

Description of drawings

Fig. 1 is the self-holding electromagnetic valve sectional drawing (opening state) with the utility model structure

Fig. 2 is the self-holding electromagnetic valve sectional drawing (closed condition) with the utility model structure

Embodiment

Describe structure of the present utility model in detail below in conjunction with accompanying drawing:

Referring to Fig. 1 and Fig. 2, this self-holding electromagnetic valve comprises valve body 13, Line 1 circle 2 and No. 1 Electrical heads of any existing structure, No. 2 coils 4 and No. 2 Electrical heads.Wherein Line 1 circle 2 and No. 1 Electrical heads are vertically mounted on valve body 13 upper ends by middle cover 17 etc., and no magnetic tube 15 is passed in No. 1 moving iron core 3 lower ends of No. 1 Electrical heads, and lower end is positioned on the path of poppet port 8 of solenoid valve.No. 2 coils 4 and No. 2 Electrical heads are vertically mounted on the no magnetic tube 15, the front end of No. 2 moving iron cores 5 of No. 2 Electrical heads relies on the power of No. 2 springs 6 vertically to be against on the sidewall of No. 1 moving iron core 3, have a ring groove 16 (having increased this label) in the stage casing of No. 1 moving iron core 3, ring groove 16 width are slightly larger than the front end width of No. 2 moving iron cores 5.

Working principle:

One, the opening state of this solenoid valve:

Specifically referring to Fig. 1, when the 2 instantaneous energisings of Line 1 circle, No. 1 Electrical heads produces magnetic field, and the power that No. 1 moving iron core 3 overcomes No. 1 spring 14 moves upward, and with No. 1 fixed core 1 adhesive, opens poppet port 8.While, No. 2 moving iron cores 5, entered in the ring groove 16 of No. 1 moving iron core 3 to left movement by the power of No. 2 springs 6, pinned moving iron core 3 No. 1.After 2 outages of Line 1 circle, No. 1 moving iron core 3 also can be opened poppet port 8 because of the pinning of No. 2 moving iron cores 5, is in the self-sustaining state.Because the unlatching of poppet port 8, the medium of the epicoele of piston 12 is through honeycomb duct 9, poppet port 8 step-downs, and piston 12 moves upward because of the pressure reduction of medium, main spring 10 compressions, and primary valve is unlocked, the medium circulation.

Two, the closed condition of this solenoid valve:

Specifically referring to Fig. 2, when No. 2 coil 4 instantaneous energisings, No. 2 moving iron cores 5 overcome the power and No. 2 fixed core 7 adhesives of No. 2 springs 6, after No. 1 moving iron core 3 is unlocked, by the reposition force of No. 1 spring 14, close 8, No. 2 coil 4 dead electricity of poppet port downwards after, No. 1 moving iron core 3 also is in reset mode, reaches the purpose of closing poppet port 8.Because closing of poppet port 8, the epicoele of piston 12 boosts because of throttle orifice 11, and piston 12 moves downward, and closes primary valve, and medium is blocked.

Such two coils are as long as instantaneous energising respectively can be opened poppet port or be closed poppet port, and as long as instantaneous current"on"time is respectively greater than 0.5 second.

And the open and close of poppet port just can be controlled the principle analysis of the open and close of main piston, have been prior art, do not belong in the utility model scope, no longer explain at this.

Claims

1, a kind of self-holding electromagnetic valve, include valve body, Line 1 circle and No. 1 Electrical heads, described Line 1 circle and No. 1 Electrical heads are vertically mounted on the valve body, no magnetic tube is passed in the lower end of No. 1 moving iron core of No. 1 Electrical heads, lower end is positioned on the poppet port path of solenoid valve, No. 1 moving iron core relies on the reposition force of a spring to turn-off poppet port, relies on back No. 1 fixed core of the instantaneous energising of Line 1 circle that its suction-combining force is opened the poppet port path; It is characterized in that described solenoid valve also has No. 2 coils and No. 2 Electrical heads, No. 2 coils and No. 2 Electrical heads are vertically mounted on the no magnetic tube, and the front end of No. 2 moving iron cores of No. 2 Electrical heads relies on No. 2 spring forces vertically to be against on the sidewall of No. 1 moving iron core; Have a ring groove in the stage casing of described No. 1 moving iron core, the ring groove width is slightly larger than the front end width of No. 2 moving iron cores, by adhesive and after moving upward, the front end of No. 2 moving iron cores relies on spring force to enter in the described ring groove, keep the open state of poppet port at No. 1 moving iron core.