CN2527793Y - Domestic pipeline gas timing safety valve - Google Patents

Abstract

The utility model relates to a pipe coal gas valve which is installed at the terminal of a house coal piping and is connected with a rubber tube of a gas appliance. The utility model comprises a shell with an inlet and an outlet, a timer arranged on the shell and a timing valve driven by the timer to be on or off; wherein the timing valve comprises a control turntable; a ball bearing, a ball bearing holder, a pull rod cap and a pull rod arranged in sequence in the valve body; and a valve core and a valve core seat matched with each other; an offsetting spring is sleeved on the pull rod; a rubber bowl for sealing is arranged between the pull rod cap and the ball bearing holder; a groove for containing the ball bearing is arranged on the control turntable which is in axial connection with the timer by a ratchet wheel and a pallet nonreturn mechanism. The utility model has the advantages of reliable property, simple structure, convenient operation and low cost.

Description

Home pipeline coal gas safe and timing valve

Technical field

The utility model relates to a kind of piped gas valve, is installed in house lead in gas pipe line terminal, is connected with the rubber tube of combustion gas tool.

Background technique

Employed valve on the existing home pipeline coal gas, basically still nothing more than several patterns shown in Fig. 8-11, their intrinsic common shortcomings are exactly: the handle of control valve open and close and inner rotatable parts (spool) directly link together invariably exceptionally.At inside and outside handing-over position, all to load onto the sealing material of rubber band, asbestos yarn and so on, and will be screwed to very urgent degree to gland, could guarantee that gas can be from not leaking here, but feel will be very uncomfortable when using like this.Along with using the permanent of date, can be gapped after spool and the shell wearing and tearing, sealing material can be out of shape because of difference variation, and wear and tear with the friction of metal rotatable parts for a long time, like this, coal gas more or less will leak out from the gap of inside and outside handing-over, if the gas leakage time is long, gently then waste energy, befouling environment, heavy then cause accident, involve life.

Summary of the invention

Technical problem to be solved in the utility model is the defective at prior art, and a kind of reliable performance, simple in structure, easy to operate home pipeline coal gas safe and timing valve are provided.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: this home pipeline coal gas safe and timing valve, comprise housing, the timing valve that it is characterized in that on described housing, being provided with a timer and drive the valve open and close by timer with inlet, outlet; Described timing valve can comprise that control rotating disk, the ball, ball base, pull bar cap, the pull bar that are located in the housing successively reach equipped mutually spool and valve core case, be with a Returnning spring on the pull bar, be provided with a rubber cup that seals between pull bar cap and the ball base, control has a groove that can hold ball on the rotating disk, and the control rotating disk is connected with timer shaft by a ratchet, the non-return mechanism of ratchet.Also can be provided with the automatic language suggestion device that is made of loudspeaker, uranium battery, spring, intergrated circuit on the described control rotating disk, housing is provided with the elastic contact blade of this device opening contact of control.Described ratchet, the non-return mechanism of ratchet comprise the ratchet fixing with timer shaft, ratchet and the split washer of feeling at ease and adorning with coaxial ratchet, the spring that ratchet and has convex shoulder is connected, spring is fixed with the control rotating disk, but the convex shoulder on the opening ammunition feed spring on the split washer ejects.

Compared with prior art, advantage of the present utility model is:

1, the handle of the spool of valve internal and external control switch (control rotating disk) adopts the split setting, middle with the isolated sealing of rubber cup, handle is not to directly act on spool but drive the open and close of valve by rubber cup, pull bar cap, pull bar, Returnning spring indirectly, does not have gas leak phenomenon extremely and takes place so can guarantee the jointing place of handle, screw rod and spool.

2, employing has the timer of automatic language prompt facility device to come the control valve length of service time, and order about valve at last and close on time, not only omitted the action of once closing, the more important thing is, stopped valve to certain link between the combustion gas tool because of forgetting closing valve and leak gas and lead to the disadvantage of various accidents.

3, be provided with the ratchet automatically loosening mechanism of back that resets in the timer, long at the fixed time but time used is short or predetermined after under the situation not wanting again to use, can reset fast artificially and close source of the gas, clockwork spring does not loosen when not influencing timer again and resetting, avoided leaking the various accidents that cause because of certain link has in being scheduled to during this period of time, the Safety performance of valve has had further raising.

Description of drawings

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

Fig. 2 is a front view of the present utility model.

Fig. 3 is the valve closing view.

Fig. 4 is the valve working view.

Fig. 5 is a ratchet on the control rotating disk, schematic representation when the non-return mechanism of ratchet resets.

Fig. 6 is a ratchet on the control rotating disk, schematic representation when the non-return mechanism of ratchet works.

Fig. 7 is the local enlarged diagram of Fig. 1, the assembly relation schematic representation of reflection control rotating disk and ratchet, ratchet.

Fig. 8 is the structural representation of existing valve (cone is rotary).

Fig. 9 is the structural representation of existing valve (spheroid is rotary).

Figure 10 is the structural representation of existing valve (gate rise-fall type).

Figure 11 is the structural representation of existing valve (plane compression type).

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As shown in Figure 1, home pipeline coal gas safe and timing valve of the present utility model comprises a metal shell 21, is shaped on the inlet, outlet 8,22 that communicates in the housing 21, and a timing valve that is driven by mechanical timer is set above the housing 21.Ball 2, ball base 4, pull bar cap 6, pull bar 9 and spool 11 that is equipped with mutually and valve core case 10 etc. that this timing valve mainly is located in the housing by control rotating disk 18, successively constitute, on pull bar 9, be with a Returnning spring 7, be provided with a rubber cup that seals 5 between pull bar cap 6 and the ball base 4, on the control rotating disk 18 groove 1 is arranged, can hold ball 2.The width of this groove 1 is greater than ball 2 diameters, and to deeply, the bosom is greater than the radius of ball from shallow.Control rotating disk 18 is connected with timer shaft 15 by a ratchet, the non-return mechanism 13 of ratchet.This ratchet, the non-return mechanism of ratchet comprise ratchet 27, ratchet of fixing with timer shaft 15 26 and the split washer 28 of feeling at ease and adorning with coaxial ratchet, the spring 24 that ratchet 26 and has convex shoulder 25 is connected, spring 24 is fixing with control rotating disk 18, but the convex shoulder 25 on the opening ammunition feed spring on the split washer 28 ejects.

Its working principle is as follows: the valve core case 10 supporting sealings of cone rubber spool 11 and same tapering, pull bar 9 above the spool 11 and pull bar cap 6 transmit from last and next pressure, middle that rubber cup 5 thin all around, thick middle adopts the top-quality rubber of excellent elasticity to make, its the transmission pressure of both having formed a connecting link below ball base 4 plays extremely important seal action again.Ball base 4 only can not rotate and can move up and down, and ball 2 can rotate by axis direction when transmitting pressure from top to bottom, to reduce ball with the frictional resistance between the control plane of rotor disc.

During the valve closing state, ball 2 is just in time aimed in the bosom of the groove 1 in the rotating disk 18 as can be seen from Figure 3, and Returnning spring 7 opens, and spool 11 is pulled up, and valve is with regard to tight closing; In the time of need opening valve, rotate the timing button 16 on the rotating disk, groove 1 slips over ball 2 positions from deep to shallow, the plane compressing ball 2 on the rotating disk 18, and ball base 4 descends, rubber cup 5 compressive deformations, compression reseting spring 7 behind pull bar cap 6 pressurizeds, spool 11 descends, air-flow just from spool top by entering air outlet channel, be working state this moment, as shown in Figure 4.

When using burner routinely, people can be according to experience to preengage a few minutes of the own time that will use more, and for example burning a kettle boiling water needs 8 minutes approximately, just timing knob 16 clockwise directions is screwed into 10 minutes positions in the dial 20.After using end to turn off the combustion gas tool, at this moment timer 19 still will rotate a few minutes.When knob 16 forwarded the OFF position to, groove 1 bosom on the rotating disk just in time arrived ball 2 positions, and valve is just closed automatically.

In another case, the time of former agreement is short, but time used will be grown, for in preventing to use because of the flame-out suddenly trouble of igniting once more of bringing of defence not, in the knob perforated lid, be provided with the automatic language suggestion device of forming by loudspeaker, uranium battery, spring, integrated package 12, knob 16 will get back to stop before half a minute position, the opening contact 23 of automatic language prompt facility device is connected by the elastic contact blade 3 below the rotating disk on the control rotating disk 1, transmits prompting sound.The battery of verbal cue device can be turned on perforated lid 14 and change voluntarily as exhausting.

Also has a kind of use condition, the opened knob of user was preengage 30 minutes or the longer time, just used and do not used but the flip-flop idea soon or also as yet without the combustion gas tool, let alone to close voluntarily source of the gas like this and just need 30 minutes or longer time, can press rotation direction OFF position counterclockwise to knob 16 artificially like this.Because in control rotating disk 18 and timer shaft 15, be provided with ratchet, the non-return mechanism of ratchet and the ratchet back loosening mechanism automatically that resets, though at this moment timer shaft 15 and ratchet 27 also reset in rotation, but spool is closed already, if each link after the valve has gas leakage slightly, the consequence that also can not leak gas takes place.

Under the normal condition, regularly knob 16 when clockwise direction rotates, owing to the effect of 26 pairs of ratchets 27 of ratchet, can twist tight clockwork spring and can do the time location again under the control of a head screw 17, let go the back because the reaction force of clockwork spring, and regularly knob 16 and control rotating disk 18 reset to counter clockwise direction.If regularly knob 16 is when counter clockwise direction is rotated artificially, because the one-way of ratchet 26, the effect that can break away from ratchet 27 can rest on the arbitrary position.When ratchet 26 rested on the OFF position, because the spring convex shoulder 25 of control ratchet ejects split washer 28 openings, at this moment ratchet 26 broke away from the effect to ratchet 27 fully.

Claims (3)

1, a kind of home pipeline coal gas safe and timing valve comprises the have inlet, outlet housing (21) of (8,22), and it is characterized in that: housing (21) is provided with a timer (19) and is driven the timing valve of valve open and close by timer; Described timing valve comprises that control rotating disk (18), the ball (2), ball base (4), pull bar cap (6), the pull bar (9) that are located in the housing successively reach equipped mutually spool (11) and valve core case (10), be with a Returnning spring (7) on the pull bar (9), be provided with a rubber cup that seals (5) between pull bar cap (6) and the ball base (4), one groove (1) that can hold ball is arranged in control rotating disk (18), and control rotating disk (18) is connected with timer shaft (15) by a ratchet, the non-return mechanism of ratchet (13).

2, home pipeline coal gas safe and timing valve according to claim 1, it is characterized in that: described control rotating disk (18) is provided with the automatic language suggestion device (12) that is made of loudspeaker, uranium battery, spring, intergrated circuit, and housing is provided with the elastic contact blade (3) of this device opening contact (23) of control.

3, home pipeline coal gas safe and timing valve as claimed in claim 1, it is characterized in that: described ratchet, the non-return mechanism of ratchet comprise the ratchet (27) fixing with timer shaft (15), ratchet (26) and the split washer (28) of feeling at ease and adorning with coaxial ratchet, the spring (24) that ratchet (26) and has convex shoulder (25) is connected, spring (24) is fixing with control rotating disk (18), split washer (28) but on opening ammunition feed spring on convex shoulder (25) eject.

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