CN2158473Y

CN2158473Y - Self-lock type safety electromagnetic valve for gas fire

Info

Publication number: CN2158473Y
Application number: CN 93214311
Authority: CN
Inventors: 王錞; 周祥瑞; 张永勤; 唐锡忠; 董旦铨; 王权
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-26
Filing date: 1993-05-26
Publication date: 1994-03-09
Anticipated expiration: 2003-05-26

Abstract

The utility model relates to a self locking type safety gas electromagnetic valve, which is matched with a gas alarm and can quickly cut off a gas leakage source. The utility model is composed of a valve seat, a valve seat sleeve, a valve core, a lower cover plate, a valve core rod, an outer sleeve, an inner sleeve, a middle cover plate, an upper cover plate, an armature, a magnet coil, a conical spring, etc. The middle part of the armature is provided with a vertical groove, the upper part of the vertical groove is provided with a small hole, a plugging pin passes through the hole of the upper cover plate, a spring is arranged between a boss of the plugging pin and the upper cover plate, and the end part of the boss can slide into the vertical groove. When a gas leakage phenomenon occurs, the utility model can realize that the gas source can be automatically cut off; when the power is cut off, the gas source can be cut off by hand, and the safety can be ensured.

Description

Self-lock type safety electromagnetic valve for gas fire

The utility model relates to a kind of self-locking gas safety solenoid valve, with the supporting use of gas leak detector, and the source of the gas that can promptly cut off leakage.

The development of building along with the town and country gas works is because of the combustion gas partial combustion produces carbon monoxide gas or the blast, fire and the carbon monoxide poisoning that cause because of gas leakage happen occasionally.At present, existing coal gas monitor controller when gas leakage, though the air draft output function is arranged, does not have the function of cutting off source of the gas, causes the accident easily.When having a power failure, just can't use.

The purpose of this utility model provides a kind of self-locking gas safety solenoid valve, when gas leakage, can cut off source of the gas automatically, also can manually cut off source of the gas when having a power failure, and can guarantee safety.

The utility model is made up of valve seat 1, valve sleeve 2, spool 3, lower cover plate 4, valve core rod 5, overcoat 6, interior cover 7, cover plate 9, upper cover plate 10, armature 14, electromagnetic coil 15, volute spring 16 etc., have vertical slot at armature 14 middle parts, on the top of vertical slot one aperture is arranged, latch 11 passes the hole of

upper cover plate

10,10 of latch 11 boss and upper cover plates are provided with spring 19, can slide in vertical slot in the boss end.

Below in conjunction with accompanying drawing the utility model is further described below.

Fig. 1 is a structural drawing of the present utility model.

Fig. 2 is a self-locking device erection drawing of the present utility model.

Seal ring 18 of the present utility model is enclosed within the circular groove of valve sleeve 2 and spool 3, and in valve sleeve 2 inserted valve seats 1, there is the hole of turnover combustion gas at valve seat 1 two ends, by seal ring 18 seal valve seat sleeves 2 and valve seat 1.One end of volute spring 16 is fixed on the upper-end surface of valve seat 1, spool 3 is penetrated and is pressed into the valve sleeve 2 from volute spring 16, by seal ring 18 seal valve seat sleeves 2 and spool 3.Lower cover plate 4 is placed on the valve seat 1, and the top of spool 3 is covered, and the other end of volute spring 16 is fixed on the lower cover plate 4, and screw 17 is fixing with valve seat 1 with lower cover plate 4, and lower cover plate 4 is made static magnet and used.Valve core rod 5 is put into the upper end hole of lower cover plate 4, and contacts with spool 3 upper-end surfaces.Interior cover 7 is spun on the lower cover plate 4, and in the groove of cover 7 and lower cover plate 4 compositions, overcoat 6 was enclosed within outside the electromagnetic coil 15 in electromagnetic coil 15 was enclosed within.Coil backplate 8 is placed on the electromagnetic coil 15, cover plate 9 is fixed with interior cover 7, armature 14 is put into cover 7, upper cover plate 10 covers on armature 14 and the overcoat 6, have vertical slot at armature 14 middle parts, on the top of vertical slot one aperture is arranged, latch 11 passes the hole of

upper cover plate

10,10 of latch 11 boss and upper cover plates are provided with spring 19, can slide in vertical slot in the boss end.Screw 13 is fixing with upper cover plate 10 and cover plate 9.Armature 14 upper ends are passed upper cover plate 10 and are connected to push rod 12.

When gas leakage, gas leak detector sends an electrical signal to electromagnetic coil 15, produces magnetic field, armature 14 is attracted downwards, screw down valve core bar 5 and spool 3, and volute spring 16 is compressed, suction port is blocked in the underpart of spool 3, source of the gas is cut off, and latch 11 slides in armature 14 vertical slots simultaneously, when arriving the aperture of armature 14, latch 11 is under the effect of spring 19, insert the aperture of armature 14, valve is lockable, and makes the spool 3 can not be from horizontal reset under the effect of volute spring 16.After leakage failure is eliminated, as long as go out latch 11, spool 3 is moved under the volute spring effect with hand-lifting, open gas circuit, recover air feed.

When having a power failure, gas leakage takes place, push rod 12 can be pressed and source of the gas and pinning can be cut off equally.

The utility model can realize cutting off automatically source of the gas when gas leakage, also can manually cut off source of the gas when having a power failure, and can guarantee safety.

Claims

1, a kind of self-locking gas safety solenoid valve, form by valve seat (1), valve sleeve (2), spool (3), lower cover plate (4), valve core rod (5), overcoat (6), interior cover (7), cover plate (9), upper cover plate (10), armature (14), electromagnetic coil (15), volute spring (16) etc., it is characterized in that armature (14) middle part has vertical slot, on the top of vertical slot one aperture is arranged, latch (11) passes the hole of upper cover plate (10), between latch (11) boss and upper cover plate (10) spring (19) being set, can slide in vertical slot in the boss end.

2, self-locking gas safety solenoid valve according to claim 1 is characterized in that armature (14) upper end passes upper cover plate (10) and be connected to push rod (12).