CN2918931Y - Conduit gas ultra under-pressure and pull-off self-closing valve - Google Patents

Abstract

The utility model relates to a gas pipeline safeguard protection valve and consists of a valve pocket interlocked by a main valve body and a valve cover. The main valve body has a taper inlet and a side wall outlet, and a taper inlet is surrounded by a ring-shaped permanent magnet. A handle rod is inserted into the valve pocket via the valve cover opening, and the lower end of the handle rod is provided with a rubber seal plate and a rubber sealing corrugation with rubber sealing corrugation film slice; the lower end of the rubber sealing plate has a rubber ball for sealing. The valve cover has an adjustable screw. We can make the technical parameters of our products complying with the state standards by adjusting the screws. This valve can automatically cut off the gas supply in case of gas pipeline overpressure, under-pressure or rubber pipe falling, which can ensure the safety, energy conservation and purification.

Description

The pipeline gas ultra under-pressure, take off the pipe self acting stop valve

Affiliated technical field

The utility model content belongs to the pipeline gas valve technology field, relates to a kind ofly can superpressure, the under-voltage valve of stopping the supple of gas or steam or can close gas circuit during the sebific duct dropping situations automatically occurring at family expenses or industrial pipeline gas.

Background technique

In daily life and industrial production, when the gas pipeline air feed is had no progeny suddenly, people are usually owing to throttle down is forgotten in carelessness, like this after pipeline recovers air feed, combustion gas will be released in a large number, and reasons such as too big or sebific duct comes off are arranged exactly in the air feed process owing to the air outlet flow again, also can cause gas leakage, these phenomenons had both caused the source of the gas waste, and were also easily accidents caused.In addition, because the fault of voltage-regulating system is compressed into the family in can taking place, make the gas meter blast in the equipment air feed process, this can bring very big harm to the user equally.

The model utility content

The purpose of this utility model is the problem that prior art exists is solved, and then provide that a kind of structural principle is simple, easy to install and use, the pipeline gas ultra under-pressure of reliable performance, take off the pipe self acting stop valve, this valve can not electricity consumption when unusual occur and closes automatically at pipeline gas pressure, guarantees the safe handling of combustion gas.

Be used to realize that the technical solution of foregoing invention purpose is such: the pipeline gas ultra under-pressure that is provided, take off the pipe self acting stop valve and have a valve pocket that constitutes by main valve body and valve gap body make-up, have tapered centre suction port and sidewall air outlet on the main valve body, periphery at the taper suction port is provided with annular permanent magnet, the hand button rod that a bottom is provided with asymmetric bulge loop is inserted in the valve chamber by valve cover hole, coaxial rubber shrouding and the rubber seal convolution diaphragm of being provided with in the lower end of hand button rod, described rubber seal convolution diaphragm is divided into two cavitys up and down with valve pocket, the convolution diaphragm internal fixation has armature, coaxially in the lower end of rubber shrouding be lifted with a shutoff rubber bead, this shutoff rubber bead stretches in the taper suction port; Valve gap body top is provided with the adjustment screw, is provided with the wire spring that is used for fixing ndfeb disk and stroke about the hand button rod is positioned in adjustment screw lower end.Product when work, the rubber shrouding suction port of under the floating function of gas, lifting off a seat in the valve pocket to diaphragm, gas is sent to burner by valve pocket.After this when following situation takes place, valve will be closed automatically: (1), when suction pressure raises suddenly and surpasses normal pressure, rubber seal convolution diaphragm pressurized moves up, the drive convolution diaphragm is up, because fixing button bar moves up and crosses the positioning wire spring that is stuck on the button bar bulge loop on the convolution diaphragm, this moment, the rubber ball sealing of rubber shrouding below was also uply blocked the taper import, made valve closing; (2), when suction port pressure is very low since the power on the rubber seal convolution diaphragm less than permanent magnet to being fixed on the power that armature attracts mutually in the elastomer diaphragm, permanent magnet and armature adhesive drive the rubber shrouding and seal the valve seat suction port, at this moment throttle down; When (3), too big or rubber pipe comes off when the air outlet flow, this moment since the suction port flow less than the air outlet flow, the power that inlet pressure attracts less than permanent magnet and armature mutually to the buoyancy of rubber seal convolution diaphragm, permanent magnet and armature adhesive, convolution diaphragm drives the rubber shrouding and seals suction port, also makes valve closing.Treat the normal back of air feed as need open valve once more that then by the reset mode of manual operation hand button rod, hand button rod is moved and drive shrouding on the rubber convolution diaphragm and the bead suction port of lifting off a seat, with valve open, this moment, the user could normal use combustion gas.Had parameter difference during production because of various accessories in the past, cause the performance index after the product assembling to be difficult to reach the problem of standard-required without adjustment, the utility model can be finished the adjustment of technical parameter and product performance by adjusting adjustment screw on the valve gap body.

Compared with prior art, the utlity model has simple and reasonable, easy to install and use, fabricating cost is cheap, advantages such as Safety performance is good, adopt the technical pattern of the asymmetric bulge loop of hand button rod, make the use of product more convenient, safety and durability can be better, it overcome in the past product in superpressure resets using process because each user presses the dynamics of pressing the hand button with direction different, may be the bad and drawback that product reliability is exerted an influence in its inner positioning wire top, and the drawback that can't guarantee the technical target of the product unanimity in the production process, efficiently solve product in using integrity problem and checkout procedure in the problem adjusted of technical parameter, guaranteed that product is durable in use and the conformity of performance index when dispatching from the factory.In addition, at gas flow during through valve pocket, because the high magnetic fields of permanent magnet has also played the effect of energy-saving and purifying to the magnetization of combustion gas.

Description of drawings

Accompanying drawing is the structural representation of a specific embodiment of the utility model.

Embodiment

Referring to accompanying drawing, the main valve body 1 that has tapered centre suction port 3 and sidewall air outlet 4 on it is a shelly object that can be connected on the gas piping, the female valve lid 2 of it and one band center hole fastens mutually and constitutes valve pockets, is provided with a rubber seal convolution diaphragm 5 in valve pocket valve pocket is divided into two cavitys up and down.The hand button rod 6 that the bottom is provided with asymmetric bulge loop 13 inserts the uuper valve chamber body by bonnet central bore, fixedly connected with rubber seal convolution diaphragm 5 in the lower end of hand button rod 6, the relative opposite side anchor ring in one side ring surface of the asymmetric bulge loop 13 of hand button rod 6 has the inclined-plane that seamlessly transits of lengthening, is processed with twice stroke indication colour circle on hand button rod 6.Rubber convolution diaphragm 5 lower ends are provided with rubber shrouding 11, the coaxial adjustable lever that is lifted with a band shutoff rubber bead 12 in rubber shrouding 11 lower ends, and the bottom of this adjustable lever is stretched in taper suction port 3, and the outside of taper suction port 3 is provided with annular permanent magnet 7.In the middle of valve gap body 2 or above be provided with and adjust screw 8, adjust screw 8 lower ends be provided with to ndfeb disk 9 fix and to hand button rod about in the of 6 stroke position the wire spring 10 of (position-limiting action).Hand button rod 6 is up can be driven rubber shrouding 11 and leaves taper air inlet 3 and make valve open, when hand button rod 6 continues up when causing bulge loop 13 to cross wire spring 10, the rubber shutoff bead 12 of rubber shrouding 11 lower ends makes valve closing with the inboard gas circuit sealing of conical nozzle 3.In the practical structures, end can be equipped with manual ball valve 16 in the air outlet of main valve body 1, manual ball valve 16 can also be removed in the use, and before valve body is installed in gas meter, to prevent the gas meter explosive accident.Other labels of accompanying drawing are respectively: 14-operating knob, 15-indication colour circle groove, 17-ball valve handle.

Claims (2)

1, a kind of pipeline gas ultra under-pressure, take off the pipe self acting stop valve, it is characterized in that having a valve pocket that constitutes by main valve body (1) and valve gap body (2) make-up, have tapered centre suction port (3) and sidewall air outlet (4) on the main valve body (1), periphery at taper suction port (3) is provided with annular permanent magnet (7), the hand button rod (6) that a bottom is provided with asymmetric bulge loop (13) is inserted in the valve chamber by valve cover hole, coaxial rubber shrouding (11) and the rubber seal convolution diaphragm (5) of being provided with in the lower end of hand button rod (6), described rubber seal convolution diaphragm (5) is divided into two cavitys up and down with valve pocket, convolution diaphragm (5) internal fixation has armature, the coaxial shutoff rubber bead (12) that is lifted with in the lower end of rubber shrouding (11), this shutoff rubber bead stretches in taper suction port (3); Valve gap body (2) top is provided with adjusts screw (8), is provided with and is used for fixing ndfeb disk (9) and to hand button rod (6) wire spring (10) that positions of stroke up and down adjusting screw (8) lower end.

2, pipeline gas ultra under-pressure according to claim 1, take off the pipe self acting stop valve, a side ring surface that it is characterized in that the asymmetric bulge loop (13) of hand button rod (6) has lengthening and seamlessly transits the inclined-plane.