CN211175581U - Novel gas safety valve - Google Patents

Abstract

The utility model relates to a safe urgent cutting device field of gas pipeline specifically discloses a novel gas relief valve, including the disk seat with locate the last valve body and the lower valve body at disk seat both ends, its characterized in that: the inner cavity of the valve seat is provided with a first cavity connected with the air inlet pipe and a second cavity connected with the air outlet pipe, and a third cavity is arranged between the first cavity and the second cavity; the cavity of the lower valve body is internally provided with an electromagnetic valve which is connected with a valve core, and one end part of the valve core is provided with a first sealing gasket for hermetically sealing the first cavity and the second cavity. The utility model discloses simple structure is high-efficient, through micro-gap switch's the structure that sets up, uses the operation more simple, and the security performance is good.

Description

Novel gas safety valve

Technical Field

The utility model relates to a safe emergency cut-off device field of gas pipeline, specific novel gas relief valve that says so.

Background

At present, most of large kitchens such as hotels, dining halls and the like adopt mechanical gas valves, a stove is ignited by adopting a special ignition rod for manual ignition, the operation is quite troublesome, the safety performance is poor, in case that the stove is accidentally extinguished without being watched, the valves are kept in an open state, the gas is still continuously sent out, and accidents such as fire disasters are easy to happen.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects and deficiencies in the prior art, the utility model aims to provide a novel gas safety valve which is simple in operation and good in safety performance.

The utility model provides a technical scheme that its technical problem adopted is:

a novel gas safety valve comprises a valve seat, an upper valve body and a lower valve body, wherein the upper valve body and the lower valve body are arranged at two ends of the valve seat;

the cavity of the lower valve body is internally provided with an electromagnetic valve which is connected with a valve core, and one end part of the valve core is provided with a first sealing gasket for hermetically sealing the first cavity, the second cavity and the third cavity;

a push button is arranged in the upper valve body, the push button is connected with a push rod, an elastic reset piece is sleeved on the rod body of the push rod, a metal contact piece which horizontally extends outwards is arranged at the lower end of the push button, a second sealing gasket used for sealing the first cavity and the second cavity in an airtight manner is arranged at the lower end of the push rod, and a third cavity is formed between the first cavity and the second cavity;

the side wall of the upper valve body is provided with a microswitch, and the contact of the microswitch is arranged corresponding to the metal contact piece.

Preferably, one end of the electromagnetic valve is connected with an induction wire.

Preferably, an igniter is associated with the microswitch.

Preferably, the elastic restoring member is a spring.

The utility model has the advantages that: simple structure is high-efficient, through micro-gap switch's the structure that sets up, can let the operation more simple, and the security performance is good.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic view of the connection structure of the present invention;

FIG. 3 is a sectional view of the internal structure and a working schematic diagram of the present invention;

FIG. 4 is a third schematic view of the sectional view of the internal structure and the operation of the present invention;

in the figure: 1. the valve seat 2, the upper valve body 3, the lower valve body 4, the first cavity 5, the second cavity 6, the electromagnetic valve 7, the valve core 8, the first sealing gasket 9, the button 10, the ejector rod 11, the elastic reset piece 12, the metal contact piece 13, the microswitch 14, the second sealing gasket 15, the third cavity 16, the induction wire 17, the igniter 18, the air inlet pipe 19, the air outlet pipe 20, the fire switch 21, the burner 22 and the main gas switch.

Detailed Description

In order to make the technical problem, technical scheme and beneficial effect that the utility model solved more clearly understand, it is right below to combine the attached drawing and embodiment the utility model discloses do further explanation. It should be understood that the embodiments described herein are merely for the purpose of illustrating the invention and are not intended to limit the invention.

As shown in fig. 1-4, a novel gas safety valve comprises a valve seat 1, and an upper valve body 2 and a lower valve body 3 which are arranged at two ends of the valve seat 1, wherein a first cavity 4 connected with an air inlet pipe 18 and a second cavity 5 connected with an air outlet pipe 19 are arranged in an inner cavity of the valve seat 1;

an electromagnetic valve 6 is arranged in the cavity of the lower valve body 3, the electromagnetic valve 6 is connected with a valve core 7, and a first sealing gasket 8 for hermetically sealing the first cavity 4, the second cavity 5 and the third cavity 15 is arranged at one end of the valve core 7;

go up and be equipped with button 9 in the valve body 2, button 9 is connected with ejector pin 10, and the pole body cover of ejector pin 10 has elasticity piece 11 that resets, and the lower extreme of button 9 is equipped with the metal that the level outwards stretched out and touches, 12, and the lower extreme of ejector pin 10 is equipped with and is used for carrying out the sealed 14 of second packing that the gas tightness was sealed with first cavity 4 and second cavity 5, constitutes third cavity 15 between first cavity 4 and the second cavity 5, and wherein, elasticity piece 11 that resets is the spring.

A microswitch 13 is arranged on the side wall of the upper valve body 2, and the contact of the microswitch 13 is arranged corresponding to the metal contact 12; an induction line 16 is connected to one end of the solenoid valve 6, and an igniter 17 is associated with the microswitch 13.

The safety system of the novel gas safety valve of the scheme is a flameout protection device which is composed of the electromagnetic valve 6 as a control element and the induction wire 16 as a sensing element, the automatic ignition of the stove and the opening function of the valve can be realized only by slightly pressing the button 9, and in case of accidental flameout of the stove, the induction wire 16 as the sensing element and the power supply can sense the temperature reduction and cut off the gas source through the electromagnetic valve, thereby preventing gas leakage and preventing the gas leakage from happening in the bud.

As an embodiment in terms of use and principle, as shown in fig. 1, in a normal condition of the novel gas safety valve, an air inlet pipe 18 is connected with a first cavity 4, a second cavity 5 is connected with an air outlet pipe 19, when air flows in from the first cavity 4 to fill the first cavity 4, a third cavity 15 and the second cavity 5 are hermetically separated by a first sealing gasket 8 (rubber) of a valve core 7 and are not communicated with each other, and the valve is in a closed state at this time;

as shown in fig. 3, when the device needs to work, the kindling switch 20 is firstly turned on, and the button 9 is pressed by hand for more than 10 seconds;

at the moment, the ejector rod 10 and the second sealing gasket 14 are pressed downwards, the second sealing gasket 14 separates the second cavity 5 from the third cavity 15 to seal the second cavity 5, the valve core 7 is ejected by the ejector rod 10 to enable the first cavity 4 to be communicated with the third cavity 15, the third cavity 15 is connected with the fire seed of the burner 21, namely, the fuel gas is opened to firstly reach the fire seed of the burner 21, meanwhile, the metal contact 12 on the button 9 is pressed downwards and triggers the micro switch 13 to enable the igniter 17 to be electrified and operated, an electric pulse is sent to an ignition needle on the fire seed edge of the burner 21 to carry out electric pulse ignition, after the fire seed is ignited, the flame burns a sensing head of the sensing wire 16 to generate a thermoelectric force signal and then is transmitted back to an electromagnetic suction device of the electromagnetic valve 6, the electromagnetic suction operation enables the valve core 7 to be sucked tightly, at the moment, the button is released, the button 9 and the second sealing gasket 14 are reset under the action of the elastic reset piece 11 (a spring), so that the first cavity 4 is communicated, the valve completes the actuation operation as shown in fig. 4, at which time the main gas switch 22 can be opened.

When the gas safety valve needs to stop working, the flame switch 20 and the main gas switch 22 are closed, so that flame of the burner 21 is completely extinguished (or the gas appliance is extinguished in an unexpected situation), the induction head of the induction wire 16 is cooled, the thermoelectric force is weakened and disappears, the electromagnetic valve 6 stops working and is released, the valve core 7 presses the valve port of the valve seat 1 under the action of the elastic reset piece 11 (spring), the first cavity 4 is separated from the third cavity 15 and the second cavity 5, the main gas path and the flame path are completely closed, and the gas safety valve returns to the closed state shown in fig. 1.

The foregoing is considered as illustrative of the preferred embodiments only, and it is understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (4)

1. The utility model provides a novel gas safety valve, includes disk seat and the last valve body and the lower valve body of locating the disk seat both ends, its characterized in that: the inner cavity of the valve seat is provided with a first cavity connected with the air inlet pipe and a second cavity connected with the air outlet pipe, and a third cavity is arranged between the first cavity and the second cavity;

an electromagnetic valve is arranged in the cavity of the lower valve body and connected with a valve core, and a first sealing gasket for hermetically sealing the first cavity and the second cavity is arranged at one end of the valve core;

a push button is arranged in the upper valve body and connected with a push rod, an elastic reset piece is sleeved on the rod body of the push rod, a metal contact piece horizontally extending outwards is arranged at the lower end of the push button, and a second sealing gasket used for hermetically sealing the first cavity and the second cavity is arranged at the lower end of the push rod;

the side wall of the valve body is provided with a microswitch, and the contact of the microswitch is arranged corresponding to the metal contact piece.

2. A novel gas safety valve as claimed in claim 1, wherein: one end of the electromagnetic valve is connected with an induction wire.

3. A novel gas safety valve as claimed in claim 1, wherein: an igniter is associated with the microswitch.

4. A novel gas safety valve as claimed in claim 1, wherein: the elastic reset piece is a spring.

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