CN102062241B

CN102062241B - Upper end sealed fuel valve

Info

Publication number: CN102062241B
Application number: CN201010569773A
Authority: CN
Inventors: 沈琦杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-02
Filing date: 2010-12-02
Publication date: 2012-10-17
Anticipated expiration: 2030-12-02
Also published as: CN102062241A

Abstract

The invention discloses an upper end sealed fuel valve which comprises a lower shell (13) connected with an upper shell (1) in a sealing manner, wherein the lower shell (13) is internally provided with a ventilating hole. The upper end sealed fuel valve is characterized in that a baffle plate is arranged between the upper shell (1) and the lower shell (13), the top of a cavity of the upper shell (1) is fixed with a static core (2), a coil (4) with a magnet (6) is fixed under the static core (2), a movable core (3) is arranged in the coil (4), a pull rod (7) is fixed on the side wall of the movable core (3), a guide groove (14) is arranged on the side wall of the upper shell (1) along the vertical direction; the pull rod (7) penetrates through the guide groove (14) and extends out of the upper shell (1); the guide groove (14) is provided with a sealing cap (8); the bottom of the movable core (3) is fixed with a lower pull rod (10), the lower pull rod (10) extends into the lower shell (13) after penetrating through the baffle plate, the bottom of the lower pull rod (10) is fixed with an end cover cap (12) matched with the ventilating hole; and a spring (9) is arranged between the end cover cap (12) and the baffle plate.

Description

Upper end closed formula gas valve

One, technical field

The present invention relates to a kind of upper end closed formula gas valve with the gas alarm electrotome.When gas leakage, fuel gas alarm is reported to the police and this gas valve is closed automatically, and blast tube is cut off.After getting rid of leakage factor, open gas valve, user's gas just commonly used, thus guarantee user's security of the lives and property.

Two, background technique

Be useful for the automatic valve that cuts off of gas leakage alarm now mainly by upper shell, moving iron core, static iron core, U type frame, compositions such as coil, magnet, upper connecting rod, spring, sealed cap, lower link, end cap cap, lower shell body.Its working principle is: when burnt gas valve pull rod is upwards mentioned; The magnetic field that magnet produces makes the pulling force of the gravitation of iron core, static iron core greater than spring; Moving iron core, the mutual adhesive of static iron core, end cap cap and lower shell body ventilating hole on the pull bar disengage, and gas valve forms path; When needs are closed gas valve; Give electrical signal of gas valve, this signal acts on the coil, and the magnetic field that coil produces makes that gravitation reduces between iron core, the static iron core; Spring force is greater than gravitation between moving iron core, the static iron core; Spring automatically resets, and the end cap cap on the pull bar is close to the lower shell body ventilating hole, and fuel gas path is cut off.Present gas valve all is employed in moving top unshakable in one's determination punching tapping, is screwed into upper connecting rod (being about to upper connecting rod is fixed on the moving iron core), and upper connecting rod passes simultaneously and passes the upper shell top again behind the fixed core that is equipped with the hole and be connected with handle.When valve was in opening state, moving iron core, fixed core were by magnetic force adhesive contact, and gas valve forms path; When valve was in closed condition, moving iron core, static iron core were separately.Why do like this; Be because behind valve closing, open valve, must upwards mention pull bar; Make iron core, static iron core again adhesive contact just can make valve open-minded; Pull bar is the requisite workpiece of this valve, and moving iron core, static iron core must punch respectively, and also must tapping in the hole on moving iron core so that tighten upper connecting rod.Opening of valve is to lean on the moving iron core of magnets magnetic fields gravitation adhesive, static iron core to realize, this way is electroplated afterwards upper connecting rod again owing to moving punching tapping unshakable in one's determination, and the electrodeposited coating on the screw thread is destroyed, produce corrosion easily at the place of being in contact with one another, and adhesive is bad; Causing him to reduce by magnetization back adhesive face because moving iron core, static iron core must punch respectively, also is the not firm one of the main reasons of adhesive; Simultaneously, in order to have dust impurity to get into from pull bar between anti-stop iron core, the static iron core, solenoid valve has all been made seal closure; Seal closure is in case damaged, and impurity gets into, and moving iron core, static iron core are difficult to adhesive; Punching means that also production process increases on the static iron core, and cost raises.(move iron core, the static iron core adhesive is not firm) after the gas valve (solenoid valve) of tradition band gas alarm electrotome is contained on the user pipe, often occurs mentioning and fall naturally again behind the upper connecting rod, above factor causes.In addition, owing to will adorn devices such as pull bar, seal closure at the upper shell top, solenoid valve length is increased; When mounted valve,, often be difficult to install, only take to take apart solenoid valve because the user installation pipeline is very near usually from wall; Load housing earlier, refill the way of upper shell, this phenomenon is also very common when mounted valve; On-the-spot dismounting rear electromagnetic valve is easy to generate leakage not through detecting, and causes security incident.Punching means that also production process increases on the static iron core, and cost raises.

Three, summary of the invention

The objective of the invention is to overcome the deficiency of existing technology, design a kind of upper shell upper end closed, the tapping of on moving top unshakable in one's determination, not punching; On fixed core, do not punch yet, effectively anti-stop iron core, static iron core corrosion, the upper shell end face is in closed state; Do not worry that dust falls into, can not produce the phenomenon that moving iron core, static iron core adhesive do not live, thereby can effectively spur moving unshakable in one's determination and fixed core adhesive; Be convenient to install the upper end closed formula gas valve that production process reduces, cost reduces again.

Mentality of designing of the present invention is: design a kind of cross-tie device that replaces the vertical pull-rod device of tradition, from side pull-rod device is installed, realize moving up and down of pull bar equally, reach the purpose of opening with throttle down.

Concrete design proposal of the present invention is: a kind of upper end closed formula gas valve, comprise the upper shell that the top is airtight, with upper shell be tightly connected lower shell body, be provided with ventilating hole in the lower shell body, it is characterized in that:

Be provided with dividing plate between upper shell and the lower shell body;

Be formed with cavity between upper shell and the dividing plate; The roof anchorage of this cavity has static iron core, is fixed with the coil of magnet carrier below the static iron core, and moving iron core is housed in the coil; Be fixed with pull bar on the moving iron core sidewall; Vertically have guiding groove in upper shell sidewall upper edge, pull bar passes guiding groove and stretches out outside the upper shell, and sealed cap is housed on guiding groove;

Moving iron core bottom is fixed with lower link, has through hole on the dividing plate, and lower link stretches in the lower shell body after passing this through hole, and the lower link bottom is fixed with the end cap cap that cooperates with ventilating hole;

Between end cap cap and dividing plate, spring is housed.

In the present invention, dividing plate both can be made separately, also can be made into integral body with upper shell.Between through hole on the dividing plate and lower link, also can load onto sealed cap.In fact, do not lose at sealed cap under the situation of sealing effect, between through hole on the dividing plate and lower link, also adorning sealed cap or on guiding groove, adorning sealed cap or all adorn sealed cap at above-mentioned two places is the design of equivalence fully.

Advantage of the present invention is: because the tapping of not punching on the moving iron core; Do not exist not to be screwed into the problem that upper connecting rod produces corrosion after the plating, fixed core is punching also, is at valve between them can fully contact when opening and adhesive is firm; The upper shell upper end surface is in closed state simultaneously; Dust impurity can't get into moving iron core, static iron core end face, has guaranteed the soundness and the reliability of their adhesives, has overcome existing valve fully and has inserted the unsafe factor that pull bar brings in the punching of upper shell end face.Simultaneously do not adorn pull bar, draw cap in the upper shell upper-end surface, device such as seal closure, reduced height, made things convenient for installation, reduced cost.

Four, description of drawings

Fig. 1 is a kind of upper end closed formula gas valve embodiment's a erection drawing.

Among the figure: the 1-upper shell, the 2-static iron core, 3-moves iron core, 4-coil, 5-U type frame, 6-magnet, 7-pull bar, 8-sealed cap, 9-spring, 10-lower link, 11-seal ring, 12-end cap cap, 13-lower shell body, 14-guiding groove, 15-screw rod.

Five, embodiment

Below in conjunction with accompanying drawing, the present invention is done detailed description.

Like Fig. 1, a kind of upper end closed formula gas valve comprises the airtight upper shell in top 1, with upper shell 1 through screw rod 15 and seal ring 11 be tightly connected lower shell body 13, be provided with ventilating hole in the lower shell body 13, it is characterized in that:

Be provided with dividing plate between upper shell 1 and the lower shell body 13 with upper shell 1 integral manufacturing;

Be formed with cavity between upper shell 1 and the dividing plate; The roof anchorage of this cavity has static iron core 2, is fixed with the coil 4 of magnet carrier 6 below the static iron core 2, and moving iron core 3 is housed in the coil 4; Be fixed with pull bar 7 on moving iron core 3 sidewalls; Vertically have guiding groove 14 in upper shell 1 sidewall upper edge, pull bar 7 passes guiding groove 14 and stretches out outside the upper shell 1, and sealed cap 8 is housed on guiding groove 14;

Moving iron core 3 bottoms are fixed with lower link 10, have through hole on the dividing plate, and lower link 10 stretches in the lower shell body 13 after passing this through hole, and lower link 10 bottoms are fixed with the end cap cap 12 that cooperates with ventilating hole;

Spring 9 is housed between end cap cap 12 and dividing plate.

Wherein the coil 4 of magnet carrier 6 is fixed on the U type frame 5, and U type frame 5 is fixed in the cavity that forms between upper shell 1 and the dividing plate.

When gas leakage occurring; Electrotome is given this valve winding 4 energisings, and the magnetic field that the magnetic field that coil 4 produces produces magnet 6 is weakened, moving iron core 3 and the pulling force of static iron core 2 gravitation each other less than spring 9; The pulling force of spring 9 moves downward iron core 3; The pull bar 7 that is connected with moving iron core 3 moves downward, and under the effect of spring 9, compresses lower shell body 13 ventilating holes with end cap cap 12 on the lower link 10 that moving iron core 3 is connected, thereby makes valve be in closed condition.

When accident treatment is accomplished; After making valve winding 4 outage, the manual work pull bar 7 that moves upward, end cap cap 12 is separated with the ventilating hole of lower shell body 13; The magnetic field that magnet 6 produces make iron core 3, static iron core 2 each other gravitation greater than the pulling force of spring 9; Thereby make iron core 3, static iron core 2 mutual adhesive contacts, valve is open-minded, recovers air feed.

Claims

1. a upper end closed formula gas valve comprises the airtight upper shell in top (1), and with the lower shell body (13) that upper shell (1) is tightly connected, lower shell body is provided with ventilating hole in (13), it is characterized in that:

Be provided with dividing plate between upper shell (1) and the lower shell body (13);

Be formed with cavity between upper shell (1) and the dividing plate; The roof anchorage of this cavity has static iron core (2), is fixed with the coil (4) of magnet carrier (6) below the static iron core (2), and moving iron core (3) is housed in the coil (4); Be fixed with pull bar (7) on moving iron core (3) sidewall; Vertically have guiding groove (14) in upper shell (1) sidewall upper edge, pull bar (7) passes guiding groove (14) and stretches out outside the upper shell (1), and sealed cap (8) is housed on guiding groove (14);

Moving iron core (3) bottom is fixed with lower link (10), has through hole on the dividing plate, and lower link (10) stretches in the lower shell body (13) after passing this through hole, and lower link (10) bottom is fixed with the end cap cap (12) that cooperates with ventilating hole;

Spring (9) is housed between end cap cap (12) and dividing plate.