CN2436790Y - Safety valve for accident extinguishing - Google Patents

Abstract

The utility model relates to an extinguishing safety valve. The utility model is characterized in that the extinguishing safety valve comprises a valve body, an electromagnetic valve, a thermocouple and a control rod, wherein, the middle part of the valve body is provided with a separating shield with a through hole; the electromagnetic valve is arranged in one side valve body, and is connected with a free end through a spring; a potential generated by the heating of a probe of the thermocouple drives the electromagnetic valve to suck and to combine; the control rod is arranged in the other side valve body. When the controlled end of the control rod is in a working condition the free end of the electromagnetic valve is disengaged. When an oil burner is accidentally extinguished, the potential of the thermocouple is eliminated. The free end of the electromagnetic valve can block the through hole on the separating shield to cut off the supply of oil and gas, and thus, the emission of lots of oil and gas can be prevented, and the accident threat can be effectively eliminated. The utility model can be widely used for fuel oil stoves or gas stoves.

Description

Flame-out safety valve

The utility model relates to a kind of safety valve, particularly about a kind of flame-out safety valve that is used on fuel oil or the gas furnace.

The appearance of fuel oil or gas furnace brings a lot of convenience for people's life, and especially as open-air march and ground observation personnel's cooking stove, its superiority is more obvious.Yet stove and accessory tends to extinguish because of various reasons in combustion process, for example: put flame out by water toward overflowing behind the fluid ebuillition of heated of dress in pot, and for example: owing to abominable natural environments such as blowing, rain all might cause fray-out of flame.And in a single day flame extinguish, and will come out as easy as rolling off a log breaking out of fire or explosion accident in a large number from the fuel oil or the combustion gas of fuel oil or combustion gas nozzle ejection.

The purpose of this utility model provides a kind of in fuel oil or gas furnace combustion process, the flame-out safety valve that can cut off oil circuit or gas circuit automatically after extinguishing because of accidental cause.

For achieving the above object, the utility model adopts following design: a kind of flame-out safety valve is characterized in that: it comprises a valve body, and its middle part has one described valve body is divided into the barrier of two valve chambers, has a through hole that is communicated with two valve chambers on the described barrier; One magnetic valve, it is arranged in the described valve chamber of a side, this side valve chamber radially have an oil and gas import, described magnetic valve is provided with an axial movable end, between described magnetic valve and the described movable end spring is set, described movable end away from described through hole, seals described through hole under disengaged position under described magnetic valve attracting state; One thermocouple, its sound end are arranged on body of heater thermal source place, and the other end is connected with described magnetic valve, and the electromotive force that described thermocouple produces drives described magnetic valve adhesive; One control lever, it is arranged in the described valve chamber of opposite side, this side valve chamber radially have an oil gas vent, the manual control end of described control lever is arranged on described valve chamber outer end, the controlled terminal of described control lever, movable end with described magnetic valve pushes up from described barrier in the normal state, the following in working order movable end away from described magnetic valve.

Described control lever comprises a sealing shroud, and it is sealedly connected in the described valve chamber, and described sealing shroud outer end has a stepped hole; One stock, it is arranged in the described stepped hole, has a shaft shoulder on the described stock; One spring, it overlapped described stock and withstood on the described shaft shoulder; One fixture, it overlapped described stock and withstands described spring and be fixed on the described sealing shroud, and the outer face of described fixture has a transverse concave groove; One handle, it is fixed on the end of described stock, and the inner face of described handle has a protuberance that cooperates with described transverse concave groove.

Described sealing shroud the inner has a shrinkage pool, and a spring is set in the described shrinkage pool, and the two ends of described spring are provided with a sealing ring and a back-up ring that is enclosed within on the described stock respectively, in described shrinkage pool end one sealing-plug are set.

The utility model is owing to adopt above design, the following advantage of its tool: 1, the utility model is owing to be provided with a valve body with two valve chambers, at the indoor magnetic valve that is provided with of a side valve of valve body with a movable end, on magnetic valve, connected a thermocouple, in valve body opposite side valve chamber, be provided with a control lever, therefore can be subjected to the adhesive of thermogenetic electromotive force control magnetic valve by thermocouple, position by the control lever controlled terminal is provided with, meet accident flame-outly in case reach stove and accessory, just can be rapidly cut off the purpose of oil circuit by the movable end of magnetic valve.2, the utility model is owing to adopt the adhesive of thermocouple control magnetic valve, whether the change in location control magnetic valve with the control lever end withstands its movable end under disengaged position, especially in the concrete structure of control lever, adopt cooperating of groove and protuberance, stock cooperates with sealing ring etc. with spring, sealing shroud, make the utility model simple in structure, cost is lower, makes and the very effective convenience of operation, and the utility model can be widely used in various fuel oils, the gas furnace.

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

Fig. 1 is that the utility model is in common view

Fig. 2 is the A-A cross-sectional schematic of Fig. 1

Fig. 3 is the utility model magnetic valve adhesive schematic diagram when in running order

Fig. 4 be the utility model when in running order magnetic valve break away from schematic diagram

As shown in Figure 1 and Figure 2, the utility model comprises a valve body 10, a thermocouple 20, a magnetic valve 30 and a control lever 40.The middle part of valve body 10 has a barrier 11 valve body 10 is separated into two valve chambers 12,13, has the through hole 14 of a connection two valve chambers 12,13 on the barrier 11.Thermocouple 20 is arranged on the end of a side valve chamber 12, and the probe 22 of thermocouple 20 is arranged near the thermal source of body of heater-fire dish.Magnetic valve 30 is arranged in the valve chamber 12, and an end of magnetic valve 30 is connected with thermocouple 20, and the other end of magnetic valve 30 is provided with a movable end 31, and a spring 32 is set between movable end and the magnetic valve 30.Produce an electromotive force after the probe 22 of thermocouple 20 is heated, this electromotive force can make movable end 31 adhesives of magnetic valve 30.Under magnetic valve 30 attracting states, movable end 31 is away from barrier 11; Under magnetic valve 30 disengaged positions, movable end 31 withstands barrier 11 sealing through holes 14 by the effect of spring 32.Valve chamber 12 radially have an oil and gas import 15, oil and gas import 15 is connected with oil storage tank by transportation pipe, is stove and accessory fuel feeding or oil gas.Control lever 40 is arranged in the valve chamber 13 of barrier 11 opposite sides, and the manual control end of control lever 40 is positioned at outside the valve chamber 13, valve chamber 13 radially have an oil gas vent 16, oil gas vent 16 is communicated with the oil gas nozzle of stove and accessory by pipeline.The controlled terminal 41 of control lever 40, in the normal state, the movable end 31 of magnetic valve 30 is pushed up from barrier 11, make oil circuit or gas circuit unimpeded all the time, and when the utility model is in running order (as shown in Figure 3, Figure 4), promptly after the fuel oil normal combustion, the controlled terminal of control lever 40 is placed in the movable end 31 away from magnetic valve 30.

In the foregoing description, as shown in Figure 1, the concrete structure of control lever 40 can be taked following design: a sealing shroud 42, and it is connected in the valve chamber 13 by thread seal, and sealing shroud 42 central authorities have big-and-middle the little stepped hole 43 in two ends.One stock 44 is arranged in the stepped hole 43, and two springs 45,46 are separately positioned in the two ends macropore of stepped hole 43, and the two ends of spring 45 are respectively equipped with back-up ring and sealing ring 47, and with a sealing-plug 48 axial location, to prevent that oil gas is from axially outside seepage.One end of outer end spring 46 withstands on the shaft shoulder 49 that is arranged on stock 44, and the other end is by fixture 50 axial location of passing stock 44.The outer face of fixture 50 has a transverse concave groove.One handle 51, its inner face have a protuberance that cooperates with the transverse concave groove of fixture 50, and its inner face central authorities have a screw 52, and its external screw thread with stock 44 ends cooperates the end that is fixed on stock 44.When being pulled outwardly fixed handle 50, the shaft shoulder 49 on the stock 44 can compress spring 46 like this, and the protuberance on the handle 51 just can be deviate from from the groove on the fixture 50 that matches with it, and turning handle 51 again, just can be with the end of protuberance block at fixture 50; When needs are lighted stove and accessory once more, can turning handle 51, make the protuberance alignment indentation, after the release handle 51, stock 44 is got back to original position under spring 46 effects, back down the movable end of magnetic valve 30, makes fairway unimpeded.

In the foregoing description, stock 44 can be taked other form with fixedlying connected of handle 51, the version of control lever 40 also can change to some extent, as long as can maintain static after its controlled terminal is subjected to displacement, such as: stock 44 directly is fixed on the sealing shroud 42 by screw thread, by rotate stock 44 forward, to backward shift.In addition, sealing shroud 42 and stock 44 also can not adopt the version of spring 45, and adopt other encapsulating method in axial sealing.

During the stove and accessory igniting, control lever 40 in the raw down, the head of its controlled terminal 41 pushes up the movable end 31 of magnetic valve 30 from through hole 14 (as shown in Figure 1), and the oil gas that enter oil and gas import 15 this moment passes through hole 14, flows to the oil gas nozzle burning of stove and accessory from oil gas vent 16; Be arranged on the electromotive force that produces after near the thermocouple of fire dish is heated, make magnetic valve 30 adhesives.At this moment, both made outside pulling and rotation control lever 40, and made its controlled terminal 41 break away from the movable part 31 (as shown in Figure 3) of magnetic valve 30, movable part 31 can not return yet and block through hole 14, and oil gas can freely flow to oil gas vent 16 from oil and gas import 15.When the flame on the fire dish extinguishes owing to a variety of causes, the signal output part of thermocouple 20 is gradually cold and lose electromotive force, magnetic valve 30 is in disengaged position, movable part 31 is just under the effect of spring 32, through hole 14 is blocked (as shown in Figure 4) tightly, and the oil gas that enters oil gas inlet 15 just can not cut off the oil gas supply passage by oil gas vent 16 to oil gas nozzle fuel feeding gas, so just do not have a large amount of oil gas and come out, can avoid the generation of fire or explosion accident effectively.

Claims (3)

1, a kind of flame-out safety valve, it is characterized in that: it comprises

One valve body, its middle part have one described valve body are divided into the barrier of two valve chambers, have a through hole that is communicated with two valve chambers on the described barrier;

One magnetic valve, it is arranged in the described valve chamber of a side, this side valve chamber radially have an oil and gas import, described magnetic valve is provided with an axial movable end, between described magnetic valve and the described movable end spring is set, described movable end away from described through hole, seals described through hole under disengaged position under described magnetic valve attracting state;

One thermocouple, its sound end are arranged on body of heater thermal source place, and the other end is connected with described magnetic valve, and the electromotive force that described thermocouple produces drives described magnetic valve adhesive;

One control lever, it is arranged in the described valve chamber of opposite side, this side valve chamber radially have an oil gas vent, the manual control end of described control lever is arranged on described valve chamber outer end, the controlled terminal of described control lever, movable end with described magnetic valve pushes up from described barrier in the normal state, the following in working order movable end away from described magnetic valve.

2, flame-out safety valve as claimed in claim 1, it is characterized in that: described control lever comprises

One sealing shroud, it is sealedly connected in the described valve chamber, and described sealing shroud outer end has a stepped hole;

One stock, it is arranged in the described stepped hole, has a shaft shoulder on the described stock;

One spring, it overlapped described stock and withstood on the described shaft shoulder;

One fixture, it overlapped described stock and withstands described spring and be fixed on the described sealing shroud, and the outer face of described fixture has a transverse concave groove;

One handle, it is fixed on the end of described stock, and the inner face of described handle has a protuberance that cooperates with described transverse concave groove.

3, flame-out safety valve as claimed in claim 2, it is characterized in that: described sealing shroud the inner has a shrinkage pool, one spring is set in the described shrinkage pool, and the two ends of described spring are provided with a sealing ring and a back-up ring that is enclosed within on the described stock respectively, in described shrinkage pool end one sealing-plug are set.

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