CN2387342Y

CN2387342Y - Electromagnetic valve

Info

Publication number: CN2387342Y
Application number: CN 98229720
Authority: CN
Inventors: 舒永胜
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-10-20
Filing date: 1998-10-20
Publication date: 2000-07-12
Anticipated expiration: 2008-10-20

Abstract

The utility model relates to an electromagnetic valve with status indication, and the on-off state is changed by instantly charging and is kept for a long time. A stop reverse gear which is additionally arranged on a valve core in a valve body can be engaged with an invertible gear; a mechanism is driven by a rack, and the valve core is provided with a stop reverse device; an electromagnetic valve coil is powered for one time, and the state is changed and is kept; simultaneously, the utility model is provided with a status indication device.

Description

A kind of solenoid valve

The utility model relates to solenoid valve, and the switching of especially a kind of instantaneous energising control valve has the solenoid valve that valve state is indicated.

The structure of present known solenoid valve is by valve body, form by perforation spool, electromagnetic coil with their fuse required sealing gasket, spring and bolts.When electromagnetic coil was switched on, electromagnetic coil generation magnetic force promotion or pulling, rotational valve core communicated the ostium of valve body, the perforation of spool, the outflow opening of valve body, reach the purpose of valve open.After the electromagnetic coil dead electricity, lean on the reaction force of spring to make spool return to original nature, at this moment ostium and tap hole are obstructed, realize the pass valve of valve.This valve has a shortcoming, and that is exactly, and last issue stays open if desired, and coil just must be kept "on" position so, and this life-span to electromagnetic valve coil is influential, and wastes energy.

The purpose of this utility model provides a kind of solenoid valve, only need add the electricity of a very short time to coil, and solenoid valve just can change the open and close state of valve, need not long-time energising and keeps, and have the valve state indication.

Realize that principle of the present utility model is such, it has the spool of perforation, the upper and lower cover of valve body by the valve body that has ostium and tap hole, and electromagnetic coil, retaining spring, Returnning spring and reversible gear, non-return gear, non-return steel ball, indicating piece are formed.Spool is in the middle of valve body, two perforation that are 90 ° are arranged on the spool, the lower end of spool by retaining spring friend support under cover, the upper end links to each other with non-return gear, a reversible gear is being meshed in the top of non-return gear, the reversible gear top is fixed on by spring and covers, a tooth bar is being meshed in the reversible gear side, the moving iron of tooth bar and electromagnetic coil partly links to each other, like this, when electromagnetic coil is switched on once, tooth bar pulling reversible gear is rotated 45 °, reversible gear drives non-return gear, 45 ° of non-return gear driven valve core rotation make ostium communicate by spool perforation and outflow opening, after the electromagnetic coil dead electricity, Returnning spring makes tooth bar get back to original position, reversible gear is changeed 45 ° in the other direction again, but the non-return gear of below and spool can not rotate energising next time by the time, spool just rotates 45 °, realize the change of valve state, like this, lead to once, open, logical more once electricity then closes, and goes round and begins again, and also drives an indicating piece that can thereupon rotate in non-return gear side, on covered a window, can observe the residing location status of valve according to indicating piece from window.

Owing to adopted such scheme, made solenoid valve not need long-time energising to keep valve state, and the valve state indication is arranged.

Below in conjunction with accompanying drawing and example the utility model is further specified.

Fig. 1 be open loam cake later overlook tectonic maps

Fig. 2 is the plan view of band part section

Among the figure: 1. valve body 2. is with the loam cake 3. lower covers 4. spools 5. retaining springs 6. lower cover fixing bolts 7. sealing gaskets 8. electromagnetic coils 9. coil stationary bolts 10. nuts 11. reversible gear 12. non-return gear 13. non-return steel ball 14. non-return spring 15. indicating piece supports 16. of windows.Lid spring on bonnet bolt 18. sealing gaskets 19. tooth bars 20. tooth bar locating supports 21. Returnning springs 22. on the indicating piece 17.

Structure and working principle are described as follows:

Referring to Fig. 1,2, on the valve body 1 ostium is arranged, tap hole, the centre is the cylindrical cavity of a band tapering, cylindrical cavity and ostium, tap hole communicates, spool 4 places cylindrical cavity, the two highi degree of accuracy cooperates, spool has two holes that are 90 ° of intersections on the same horizontal line of ostium, the hole that the small column of spool 4 upper ends passes the round chamber upper end of valve body 1 links to each other with non-return gear 12, in the valve body upper end chamber is arranged, non-return steel ball 13 and non-return spring 14 are equipped with in lower wall one place in chamber, non-return gear 12 upper ends and reversible gear 11 are meshed, the rotating shaft tooth engagement of side and indicating piece 16 has spring 22 between the upper end of reversible gear 11 and the loam cake 2, side and tooth bar 19 engagements, the moving iron phase of tooth bar 19 and electromagnetic coil 8 is connected, and Returnning spring 21 is housed on tooth bar 19.Electromagnetic coil 8 logical once electricity produce suction, pulling tooth bar 19, tooth bar 19 drives reversible gear 11 and clockwise rotates 45 °, reversible gear 11 drives non-return gear 12 again and rotates 45 ° to clockwise direction, because non-return gear 12 and spool 4 are connected as a single entity, then spool is rotated 45 °, at this moment, ostium and outflow opening are logical, and indicating piece 16 also rotates 45 ° simultaneously, and (ON) opened in indication; Electromagnetic coil 8 dead electricity, Returnning spring 21 make tooth bar 19 get back to original position, rotate counterclockwise 45 ° thereby drive reversible gear 11.And at this moment by the effect that non-return steel ball 13 and non-return spring 14 are arranged, non-return gear 12 can't turn round, so spool 4 also can not turn round, promptly after the dead electricity, still maintains the original state.Instantly once electrification (principle is the same) spool 4 is again to clockwise rotating 45 °, owing to have on the spool and be 90 ° perforation, so this moment, the perforation of spool 4 is not just on ostium and tap hole, so valve is equivalent to close, (OFF) closed in indication, and be same, as no longer logical once electricity, valve keeps closing state again for a long time.

Claims

1. solenoid valve, in valve body by spool, non-return gear, reversible gear, tooth bar Returnning spring, electromagnetic coil, indicating piece, upper and lower cover, fixing spring, non-return steel ball, the contrary spring of tooth, sealing gasket constitute, it is characterized in that: two intersection perforation that are 90 ° are arranged on the spool, spool connects with non-return gear, mesh with reversible gear non-return gear top, side and the engagement of indicating piece rotatory axis tooth, reversible gear meshes with tooth bar, tooth bar connects with the moving iron in the electromagnetic coil, and Returnning spring is arranged in the middle of moving iron and tooth bar; On covered peep hole; Between loam cake and reversible gear, spring is arranged, between lower cover and the spool spring is arranged.

2. by the described solenoid valve of claim 1, it is characterized in that: spool is a cylindrical body, and its outer wall closely links to each other with body cavity.

3. by the described solenoid valve of claim 1, it is characterized in that: the indicating piece of indication valve state indicates two kinds of indication letters by 45 ° of central angles are alternate on the indicating piece.