CN206972994U - The safety device of adjustable combustion gas blocking flow and the burnt gas switch for possessing such a device - Google Patents
The safety device of adjustable combustion gas blocking flow and the burnt gas switch for possessing such a device Download PDFInfo
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- CN206972994U CN206972994U CN201720763659.1U CN201720763659U CN206972994U CN 206972994 U CN206972994 U CN 206972994U CN 201720763659 U CN201720763659 U CN 201720763659U CN 206972994 U CN206972994 U CN 206972994U
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- circulation road
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Abstract
A kind of safety device of adjustable combustion gas blocking flow, comprising the body with fuel gas path, and can be assembled in turn the adjustment knob of body, the inflow entrance of fuel gas path is fixed with sleeve and by mobile safety valve.Sleeve has the logical circulation road of bell mouth shape；Safety valve includes cylinder-like shell, is supported in housing center valve plug in axial sliding, and usually forces valve plug to retreat and keep the unimpeded spring of logical circulation road；Adjustment knob is engaged by the gear of its bottom with being formed at the rack of shell, is driven shell to be moved relative to sleeve by turn adjustment knob, valve plug is advanced at the slot of logical circulation road or is backed at the wide opening of logical circulation road, and produces the effect of adjustment combustion gas blocking flow.Also, manually operated and turn valve body can be set between the inflow entrance and flow export of fuel gas path, to be opened and closed fuel gas path, the burnt gas switch for possessing the safety device is formed.
Description
Technical field
The utility model is related to a kind of gas-fired equipment, the safety device of more particularly to a kind of adjustable combustion gas blocking flow and
Possesses the burnt gas switch of such a device.
Background technology
Because the requirement on Security Countermeasures, therefore the burnt gas switch for possessing safety valve is developed, such as with the application name
TaiWan, China new patent the M427500th " gas switch ", No. M504185 " burnt gas switch " of justice proposition are two.
The burnt gas switch includes the housing with fuel gas path, and valve body is provided between the inflow entrance and flow export of fuel gas path, by
Turn is operably connected to the knob of valve body, valve body is changed valve position, has the function that to be opened and closed fuel gas path.The safety valve assembling
In inflow entrance, it includes the support with logical circulation road, and is supported in support valve plug in axial sliding, and the valve plug is usually compressed
Spring compels rearward to make logical circulation road keep unimpeded.When such as gas hose rupture, disengaging Gas appliance accident occurs, flow export is caused
When lateral pressure hurriedly drops extremely, valve plug is the elastic force for resisting above-mentioned spring, and and then close before the gaseous-pressure difference for passing through its front and back
Together in valve seat, in this way, inaccessible logical circulation road, interdicts combustion gas.
Because the power consumption of different types of Gas appliance is different, such as the power consumption of water heater is higher than gas oven, therefore water heater
The burnt gas switch of larger flow should be coordinated to use；Also, water heater is widely different according to water yield size, amount of consumed gas, it is necessary to selects
Select suitable burnt gas switch.Then it is applied to gas oven as the burnt gas switch compared with low discharge.
It is fixed blocking flow design due to possessing the existing burnt gas switch of above-mentioned safety valve, that is, does not possess adjustment
Traffic engineering capability is interdicted, the Gas appliance that can not be directed to different power consumptions adjusts accordingly, therefore for the manufacturer of burnt gas switch
For dealer, the burnt gas switch of the several different blocking flows of palpus production and marketing simultaneously, to coordinate the Gas appliance of different power consumptions to make
With so as to add production and marketing cost and stock pressure；And when changing the Gas appliance of different power consumptions, also combustion gas can be updated in the lump open
The result of pass, for gas user, an even more extra spending.
Utility model content
To solve the above problems, the utility model purpose is to provide a kind of safety device of adjustable combustion gas blocking flow
And possess the burnt gas switch of such a device, the Gas appliance of different power consumptions can be coordinated to adjust corresponding blocking flow.
To achieve the above object, the utility model takes following technical scheme：
The safety device of adjustable combustion gas blocking flow of the present utility model is implemented, includes a body, a sleeve, one
Safety valve and an adjustment knob.The body includes a fuel gas path with inflow entrance and flow export, and one connects with the inflow entrance
Assembly hole.The sleeve is fixed on the inflow entrance of the fuel gas path, and with a shape like bell-mouthed logical circulation road, the logical circulation road
Front end forms a valve seat.The safety valve includes a cylinder-like shell for being assembled in the inflow entrance, and the inside of the shell has one to permit
Perhaps the support of gas circulation, shell wall be provided with one towards the assembly hole rack；The safety valve is also supported directly upon the branch comprising one
Frame center is supported in support center valve plug in axial sliding indirectly by a central siphon, and one it is flat when force the valve plug retreat and
The unimpeded spring of the logical circulation road is kept, when the flow export lateral pressure hurriedly drops extremely, the valve plug is because of the gaseous-pressure of its front and back
Difference is more than the elastic force of the spring and is forced to advance, and interdicts the logical circulation road until being sealed at the valve seat.The adjustment knob can turn
The assembly hole of the body is installed on, its bottom has one and the rack meshed gears, and the adjustment knob drives this outer by turn
Shell phase moves for the sleeve, the valve plug is advanced at the slot of the logical circulation road or is backed at the wide opening of the logical circulation road, and
Produce the effect of adjustment combustion gas blocking flow.
The body forms a connecting portion and a junction surface respectively in the inflow entrance side of the fuel gas path and flow export side, with
A gas pipeline is connected respectively, or is each connected with a gas pipeline and a mounting object, and the mounting object includes but is not limited to
Gas valve, pressure regulator valve, timing valve, gas pipeline are with regulation annex and gas pipeline safety attachment.
The shell wall of the shell has an elongated hole, and the rack is formed at a wherein long side for the elongated hole, the geared sleeve
Enter the elongated hole and engaged with the rack.
The top of the adjustment knob includes a radially recessed ring neck groove, and a set screw for being locked in the body stretches into
The ring neck groove, the adjustment knob is held in the body as turn freely, and with least one O shapes for being assembled in the adjustment knob periphery
Ring, formed between the contact surface of the adjustment knob and the assembly hole airtight.
The body includes a pilot hole communicated with the flow export again, and an involution button and a compression spring are assembled in the dress
Distribution, the involution button are maintained at tensioning state and can be pressed freely by the compression springs, and are assembled in the involution button with least one
The O-ring of periphery, formed between the contact surface of the involution button and the pilot hole airtight.
The top of the involution button is provided with a groove, and a set screw for being locked in the body stretches into the groove, this is answered
Return button to press and be held in the body by ground.
Burnt gas switch of the present utility model is realized, includes a body, a sleeve, a safety valve and an adjustment knob.The body
Including a fuel gas path with inflow entrance and flow export, and an assembly hole connected with the inflow entrance, in the inflow entrance and stream
Valve body manually operated provided with one and turn between outlet, to be opened and closed the fuel gas path.The sleeve is fixed on the fuel gas path
Inflow entrance, and with a shape like bell-mouthed logical circulation road, the front end of the logical circulation road forms a valve seat.The safety valve includes one group
Cylinder-like shell loaded on the inflow entrance, the inside of the shell have a support for allowing gas circulation, shell wall be provided with one towards
The rack of the assembly hole；The safety valve is also supported directly upon support center comprising one or is supported in the branch indirectly by a central siphon
Frame center valve plug in axial sliding, and one it is flat when force the valve plug to retreat and keep the unimpeded spring of the logical circulation road, when the outflow
When mouth lateral pressure hurriedly drops extremely, the valve plug is forced to advance because the gaseous-pressure of its front and back difference is more than the elastic force of the spring, directly
The logical circulation road is interdicted to the valve seat is sealed at.The adjustment knob can be installed on to turn the assembly hole of the body, and its bottom has
One with the rack meshed gears, drive the shell to be moved relative to the sleeve by the turn adjustment knob, the valve plug is advanced
At to the slot of the logical circulation road or back at the wide opening of the logical circulation road, and produce the effect of adjustment combustion gas blocking flow.
The body of the burnt gas switch formed respectively in the inflow entrance side of the fuel gas path and flow export side a connecting portion and
One joint, to be connected respectively with a gas pipeline and a gas hose.
The shell wall of the shell of the burnt gas switch has an elongated hole, and the rack is formed at wherein one length of the elongated hole
Side, the gear are inserted in the elongated hole and engaged with the rack.
The top of the adjustment knob of the burnt gas switch includes one along the recessed ring neck groove in footpath direction, and one is locked in the body
Set screw stretches into the ring neck groove, and the adjustment knob is held in into the body for turn freely, and is assembled in the adjustment with least one
The O-ring of button lower, outer perimeter, formed between the contact surface of the adjustment knob and the assembly hole airtight.
The beneficial effects of the utility model are：The effect of the utility model control prior art, is, is adjusted by turn
Button drives shell to be moved relative to sleeve, valve plug is advanced at the slot of logical circulation road or is backed at the wide opening of logical circulation road, allows
The actual internal area of logical circulation road can change with the displacement of valve plug, reach and coordinate the Gas appliance of different power consumptions to tune up or adjust
The effect of small blocking flow, enables the blocking traffic profile of burnt gas switch seldom to change, or even unification, be greatly reduced production and marketing into
This and stock pressure, while when saving gas user and changing different power consumption utensils, gas safety device or combustion gas must be updated in the lump
The extra expenses of switch.
Embodiment as detailed technology content of the present utility model and other purposes with feature with reference to following cooperation accompanying drawing
Illustrate to be fully appreciated that.
Brief description of the drawings
Fig. 1 is that the utility model can adjust the outside drawing that the safety device of flow is interdicted in combustion gas.
Fig. 2 is axial direction of the present utility model (fuel gas flow direction) profile, and display safety valve, which is adjusted to intermediate fuel gas, to be hidden
The position of cutout amount, wherein solid arrow represent fuel gas flow path (similarly hereinafter).
Fig. 3 is element exploded view of the present utility model.
Fig. 4 be and the approximate profiles of Fig. 2, display valve plug start into valve closing position state.
Fig. 5 is the schematic diagram that the utility model is connected with mounting object.
Fig. 6 is the outside drawing of the utility model burnt gas switch.
Fig. 7 is Fig. 6 profile, and display safety valve is adjusted to the position of maximum combustion gas blocking flow.
Fig. 8 is to be adjusted with the approximate profiles of Fig. 7, display safety valve to the position of minimum combustion gas blocking flow, wherein empty
Line represents valve plug start into the state of valve closing position.
Drawing reference numeral：10：Gas safe cut-off；20、20a：Body；21：Fuel gas path；22：Inflow entrance；23：Stream
Outlet；24：Connecting portion；25：Junction surface；26：Assembly hole；27：Pilot hole；28：Segment difference face；29：Joint；30：Sleeve；31：Stream
Path；32：Valve seat；33：Pin thread；34：Groove；35：O-ring；36：O-ring；37：Screw；38：Screw；39：Negative thread；
40：Safety valve；41：Shell；42：Central siphon；43：Valve plug；44：Spring；45：Support；46：Elongated hole；47：Rack；48：Pipe portion；
49：Neck；50：Adjustment knob；51：Snap ring；52：Slide-bar；53：Protuberance；54：Ring neck groove；55：Set screw；56：O-ring；
57：Gear；58：Groove portion；60：Involution button；61：Compression spring；62：Groove；63：Set screw；64：O-ring；70：Installation pair
As；80：Burnt gas switch；81：Valve body；82：Duct；83：Valve seat；84：Knob.
Embodiment
As shown in Figure 1-Figure 3, the utility model can adjust safety device (the hereinafter referred to as gas safe of combustion gas blocking flow
Cut-off) 10 it is made up of a body 20, a sleeve 30, a safety valve 40, an adjustment knob 50 and an involution button 60.Wherein：
Body 20, including a fuel gas path 21 set along its axial direction (fuel gas flow direction), the fuel gas path 21 have
One inflow entrance 22 and a flow export 23, combustion gas flows to flow export 23 from inflow entrance 22, then is supplied to gas apparatus by gas pipeline
Have (not shown).Body 21 forms a threaded joints 24 and a junction surface 25 respectively in the side of inflow entrance 22 and the side of flow export 23,
To connect gas pipeline respectively, or respectively with gas pipeline and mounting object 70, such as gas valve, pressure regulator valve, timing valve, combustion gas
The pipeline regulation connection such as annex or gas pipeline safety attachment (Fig. 5), and match somebody with somebody the O shapes that unification is assembled in the periphery of junction surface 25
Ring 36 produces airtight between the contact surface of junction surface 25 and mounting object 70, prevents gas leakage.Body 20 further comprises one
The pilot hole 27 of assembly hole 26 and one communicates with inflow entrance 22 and flow export 23 respectively, and two screws 37 and 38 respectively with assembly hole 26
Communicated with pilot hole 27, the assembly hole 26 for an internal diameter upper big, lower small different diameter hole (the utility model explanation in, upper and lower
To being benchmark with reference to the accompanying drawings), to mounting and adjusting button 50.Pilot hole 27 is different diameter hole, and its top aperture is maximum, middle time
It, bottom it is minimum, to assembling involution button 60.Two screws 37,38 are locked in body 20 for two set screws 55,63 respectively, make
Adjustment knob 50 and involution button 60 respectively can turn and pressure be held in body 20 by ground, manually adjust combustion gas blocking flow for user
With reset used in safety valve 40, its details remains aftermentioned, skips over for the time being.
Sleeve 30, be preceding small, the rear big reducing body of external diameter, its leading portion is provided with pin thread 33, for the front of inflow entrance 22
Negative thread 39 coordinate, rear end has a groove 34, flows into the precession of sleeve 30 for screwdriver or similar means (not shown)
Mouth 22, until the segment difference face 28 that its front end face is terminated between inflow entrance 22 and flow export 23, and match somebody with somebody the O that unification is assembled in its periphery
Shape ring 35 forms good airtight between the contact surface of sleeve 30 and fuel gas path 21.The inside of sleeve 30 then defines a shape seemingly
Bell-mouthed logical circulation road 31, to coordinate the movable of safety valve 40, and the effect of adjustment combustion gas blocking flow is produced, and circulated
The front end on road 31 then forms a valve seat 32, and its effect equally remains aftermentioned.
Safety valve 40, including a shell 41, a central siphon 42, a valve plug 43 and a spring 44.The shell 41 to be cylindric and
Inflow entrance 22 can be movably assembled in, and receives the back segment of sleeve 30, it has one to be formed at internal back segment and allow combustion gas
The support 45 of circulation, and one located at shell wall and be set as towards the elongated hole 46 of assembly hole 26, a wherein long side for the elongated hole 46
Rack 47.The central siphon 42 inserts the pipe portion 48 in the center of support 45, and through from the radially recessed neck 49 in its rear end with from
The mutual fastening of the radially projecting snap ring 51 in the rear end of pipe portion 48, is fixed on pipe portion 48 by central siphon 42, to support valve plug 43 axially
Slide.The profile of valve plug 43 is generally in umbrella, and it is supported in central siphon by extending back to insert the slide-bar 52 of central siphon 42
42 slide axially；In other words, valve plug 43 is to be supported in the central pipe portion 48 of support 45 indirectly by central siphon 42 to slide axially certainly
Such as.In the examples in the drawings, the tension spring being had an effect using pulling force, it is assembled in the outer of central siphon 42 to the spring 44
Week, and both ends are connected to central siphon 42 and slide-bar 52, to force valve plug 43 to retreat by its elastic force, keep logical circulation road 31 smooth
It is logical.Certainly, safety valve 40 also can be as before taken off shown in patent, after slightly varying, the compression spring had an effect using compression stress,
Do not limited by tension spring, can now omit central siphon 42, valve plug 43 is supported directly upon the pipe portion 48 in the center of support 45 axially
Slide.
Adjustment knob 50, it is the reducing body of external diameter upper big, lower small, its top has a radially recessed ring neck groove 54, and one
The set screw 55 for being locked in body screw 37 stretches into the ring neck groove 54, and adjustment knob 50 can be held in turn into body 20, and
To be assembled in two O-rings 56 of its underpart periphery, appropriate gas is formed between the contact surface of adjustment knob 50 and body assembly hole 26
It is close.Adjustment knob 50 further comprising a gear 57 for being formed at its bottom, the gear 57 be inserted in the elongated hole 46 of shell 41 and with
Rack 47 engages, and safety valve 40 is moved relative to sleeve 30 by turn adjustment knob 50, and then produces regulating gas blocking stream
The effect of amount.Also, the upper surface of adjustment knob 50 has a groove portion 58, for screwdriver or the institute of similar means turn adjustment knob 50
With.
Involution button 60, the pilot hole 27 of body 20 is installed on, and is maintained at tensioning state and can be pressed by a compression spring 61
Put freely.Involution button 60 is the reducing body of external diameter upper big, lower small, and its upper periphery is provided with a groove 62, and this is locked in by one
Body screw 38 and the set screw 63 for stretching into the groove 62, involution button 60 is held in body 20 to press freely, and uses one
The O-ring 64 of its underpart periphery is assembled in, is formed between the contact surface of involution button 60 and body pilot hole 27 reliable airtight.
As shown in figure 4, when generation such as gas hose rupture or its front end come off abnormal accident by Gas appliance, valve plug
The gaseous-pressure difference of 43 front and back will be greater than the elastic force of spring 44, thus force valve plug 43 to advance towards sleeve 30, until being sealed at
Valve seat 32, in this way, inaccessible logical circulation road 31, interdicts combustion gas.
The utility model makes valve plug by the way that forward or inversely turn adjustment knob 50 drives shell 41 to be moved relative to sleeve 30
43 advance at the slot of logical circulation road 31 or back at the wide opening of logical circulation road 31, allow the actual internal area of logical circulation road 31 can be with
The displacement of valve plug 43 and change, and produce the effect of adjustment combustion gas blocking flow.Explicitly, as shown in Fig. 2 working as safety valve
40 are advanced by reverse turn with adjustment knob 50, when its valve plug 43 is advanced at the slot of logical circulation road 31, now logical circulation road
31 actual internal area diminishes, and gas flow is relatively small, while valve plug 43 is closer to the relation of valve seat 32, therefore when spring 44 exists
Valve plug 43 is because of above-mentioned abnormal accident and when start is into valve closing position, the less (stroke that i.e. spring 44 is stretched or compressed of its deflection
It is shorter), elastic force is relatively small, therefore 43 less gas flows of need of valve plug can be sealed at valve seat 32, interdicts logical circulation road 31,
Stop supply.Conversely, its valve plug 43 is set to back to logical circulation road 31 as adjustment knob 50 is retreated by forward turn in safety valve 40
Wide opening at when because the actual internal area of logical circulation road 31 becomes big, gas flow is relatively large, while valve plug 43 is due to apart from valve
Seat 32 farther out, therefore when spring 44 valve plug 43 because of above-mentioned abnormal accident and start into valve closing position when, larger (the i.e. spring of its deflection
44 strokes being stretched or compressed are longer), elastic force is relatively large, therefore needs larger gas flow that valve plug 43 could be promoted closely sealed
In valve seat 32, combustion gas is interdicted.
Had an effect in valve plug 43, that is, when valve plug 43 is sealed at valve seat 32 and interdicts logical circulation road 31, be formed at valve plug
The protuberance 53 of 43 front centers protrudes from the front of sleeve 30 and comes the underface of involution button 60, presses involution button with hand pressure afterwards
60, in the decline way of involution button 60 (such as Fig. 4 dotted lines represent), it can promote the protuberance 53 of valve plug 43 backward, make valve plug 43
Lift off a seat 32.When valve plug 43 interdicts gas circulation, the gaseous-pressure difference of the front and back of valve plug 43 then disappears, and then valve plug 43 exists
The lower automatic backing involution valve opening position of elastic force effect of spring 44, recovers gas circulation.
Above-mentioned gas safe cut-off 10 may be directly connected to gas pipeline and use (now, the junction surface 25 of body 20
Screw type should be set as connecting portion 24), also can as shown in figure 5, with gas valve, pressure regulator valve, timing valve, gas pipeline
Connected with the regulation mounting object such as annex or gas pipeline safety attachment 70, to coordinate the regulation of the Gas appliance of different power consumptions to hide
Cutout amount.
Also, the utility model is not limited to above-described embodiment, or other different kenels.Fig. 6, Fig. 7 are this reality
The outward appearance and section presented with the new embodiment with burnt gas switch 80.The burnt gas switch 80 that the present embodiment discloses and above-mentioned combustion gas
The difference of safety cutoff device 10, it is to be provided among one to open duct between the inflow entrance 22 and flow export 23 of fuel gas path 21
82 valve body 81, the both sides of the valve body 81 are seized on both sides by the arms by valve seat 83, to ensure optimal closed state, the operation dress of top connection one
(not shown) is put, valve position can be changed with moving valve 81 by the knob 84 of the turn operation device, make inflow entrance 22 and flow export
Whether 23 connections or not, has the function that to be opened and closed fuel gas path 21, because technique is category, it is known that therefore further illustrating real nothing
It is necessary.In the examples in the drawings, the valve body 81 is spherical, but is alternatively coniform or other shapes, not by spherical valve body
Limitation.According to conical valve body, above-mentioned valve seat 83 will no longer be required to, and conical valve body can pass through machinery with fuel gas path 21
Process and form air-tight fit.Because burnt gas switch 80 is connected between gas pipeline and Gas appliance, therefore its body 21a stream
The side of entrance 22 equally sets threaded joints 24 for connection gas pipeline, and the side of flow export 23 is then set as one and is adapted to gas hose
The joint 29 of (not shown), the other end of the flexible pipe are then connected to Gas appliance (not shown).The connecting portion 24 and joint 29
Or other patterns, do not limited by accompanying drawing illustrated embodiment.
Illustrate to simplify, the gas safe cut-off that the burnt gas switch 80 that the present embodiment discloses discloses with above-described embodiment
10, its identical part is interdicted with identical symbology previously for the explanation of above-described embodiment, including adjustment combustion gas
The method and principle of flow are also applied for the present embodiment, repeat no more.
As shown in figure 8, when the valve plug 43 of burnt gas switch 80 is had an effect, that is, valve plug 43 is sealed at valve seat 32 and interdicted
During logical circulation road 31 (shown in dotted line), the protuberance 53 for being formed at the front center of valve plug 43 protrudes from the front of sleeve 30, Zhi Houyong
Hand operation knob 84 makes valve body 81 rotate 90 degree (shown in dotted line)；In the rotation way of valve body 81, it can promote valve plug backward
43 protuberance 53, valve plug 43 is set to lift off a seat 32, while the automatic resetting valve opening position under the elastic force effect of spring 44 of valve plug 43,
Recover gas circulation.
Certainly, preferred embodiment of the present utility model is the foregoing is only, not thereby limits patent of the present utility model
Scope, every equivalent structure made using the utility model specification and accompanying drawing content or equivalent flow conversion, or directly or
Other related technical areas are used in indirectly, are similarly included in scope of patent protection of the present utility model.
Claims (10)
1. a kind of safety device of adjustable combustion gas blocking flow, it is characterised in that it includes：
One body, including a fuel gas path with inflow entrance and flow export, and an assembly hole connected with the inflow entrance；
One sleeve, the inflow entrance of the fuel gas path is fixed on, and with a shape like bell-mouthed logical circulation road, the front end of the logical circulation road
Form a valve seat；
One safety valve, comprising a cylinder-like shell for being assembled in the inflow entrance, the inside of the shell has one to allow gas circulation
Support, shell wall be provided with one towards the assembly hole rack；It is central or logical that the safety valve is also supported directly upon the support comprising one
Cross a central siphon and be supported in support center valve plug in axial sliding indirectly, and one it is flat when force the valve plug to retreat and keep the circulation
The unimpeded spring in road, when the flow export lateral pressure hurriedly drops extremely, the valve plug is more than the bullet because of the gaseous-pressure difference of its front and back
The elastic force of spring and be forced to advance, interdict the logical circulation road until being sealed at the valve seat；And
One adjustment knob, can be installed on to turn the assembly hole of the body, and its bottom has one and the rack meshed gears, passed through
The turn adjustment knob drives the shell to be moved relative to the sleeve, the valve plug is advanced at the slot of the logical circulation road or is backed to
At the wide opening of the logical circulation road, and produce the effect of adjustment combustion gas blocking flow.
2. the safety device of adjustable combustion gas blocking flow as claimed in claim 1, it is characterised in that the body is described
The inflow entrance side and flow export side of fuel gas path form a connecting portion and a junction surface respectively, to connect a gas pipeline respectively,
Or be each connected with a gas pipeline and a mounting object, the mounting object includes gas valve, pressure regulator valve, timing valve, Gas Pipe
Road is with regulation annex and gas pipeline safety attachment.
3. the safety device of adjustable combustion gas blocking flow as claimed in claim 1, it is characterised in that the shell wall of the shell
With an elongated hole, the rack is formed at a wherein long side for the elongated hole, the gear be inserted in the elongated hole and with this
Rack engages.
4. the safety device of adjustable combustion gas blocking flow as claimed in claim 1, it is characterised in that the adjustment knob it is upper
Portion includes a radially recessed ring neck groove, and a set screw for being locked in the body stretches into the ring neck groove, this is adjusted
Button is held in the body as turn freely, and with least one O-ring for being assembled in the adjustment knob lower, outer perimeter, the adjustment knob with
Formed between the contact surface of the assembly hole airtight.
5. the safety device of adjustable combustion gas blocking flow as claimed in claim 1, it is characterised in that the body includes again
One pilot hole communicated with the flow export, an involution button and a compression spring are assembled in the pilot hole, the involution button quilt
The compression spring is maintained at tensioning state and can pressed freely, and with least one O-ring for being assembled in the involution button periphery,
Formed between the contact surface of the involution button and the pilot hole airtight.
6. the safety device of adjustable combustion gas blocking flow as claimed in claim 5, it is characterised in that the involution button it is upper
Portion is provided with a groove, and a set screw for being locked in the body stretches into the groove, and the involution button can be pressed and be held in by ground
The body.
7. a kind of burnt gas switch, it is characterised in that it includes：
One body, including a fuel gas path with inflow entrance and flow export, and an assembly hole connected with the inflow entrance, at this
Valve body manually operated provided with one and turn between inflow entrance and flow export, to be opened and closed the fuel gas path；
One sleeve, the inflow entrance of the fuel gas path is fixed on, and with a shape like bell-mouthed logical circulation road, the front end of the logical circulation road
Form a valve seat；
One safety valve, comprising a cylinder-like shell for being assembled in the inflow entrance, the inside of the shell has one to allow gas circulation
Support, shell wall be provided with one towards the assembly hole rack；It is central or logical that the safety valve is also supported directly upon the support comprising one
Cross a central siphon and be supported in support center valve plug in axial sliding indirectly, and one it is flat when force the valve plug to retreat and keep the circulation
The unimpeded spring in road, when the flow export lateral pressure hurriedly drops extremely, the valve plug is more than the bullet because of the gaseous-pressure difference of its front and back
The elastic force of spring and be forced to advance, interdict the logical circulation road until being sealed at the valve seat；And
One adjustment knob, can be installed on to turn the assembly hole of the body, and its bottom has one and the rack meshed gears, passed through
The turn adjustment knob drives the shell to be moved relative to the sleeve, the valve plug is advanced at the slot of the logical circulation road or is backed to
At the wide opening of the logical circulation road, and produce the effect of adjustment combustion gas blocking flow.
8. burnt gas switch as claimed in claim 7, it is characterised in that the body in the inflow entrance side of the fuel gas path and
Flow export side forms a connecting portion and a joint respectively, to be connected respectively with a gas pipeline and a gas hose.
9. burnt gas switch as claimed in claim 7, it is characterised in that the shell wall of the shell has an elongated hole, the tooth
Bar is formed at a wherein long side for the elongated hole, and the gear is inserted in the elongated hole and engaged with the rack.
10. burnt gas switch as claimed in claim 7, it is characterised in that it is recessed along footpath direction that the top of the adjustment knob includes one
If ring neck groove, a set screw for being locked in the body stretches into the ring neck groove, and the adjustment knob is held in into the body is
Turn freely, and with least one O-ring for being assembled in the adjustment knob periphery, between the contact surface of the adjustment knob and the assembly hole
Formed airtight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720763659.1U CN206972994U (en) | 2017-06-28 | 2017-06-28 | The safety device of adjustable combustion gas blocking flow and the burnt gas switch for possessing such a device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720763659.1U CN206972994U (en) | 2017-06-28 | 2017-06-28 | The safety device of adjustable combustion gas blocking flow and the burnt gas switch for possessing such a device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206972994U true CN206972994U (en) | 2018-02-06 |
Family
ID=61405869
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720763659.1U Expired - Fee Related CN206972994U (en) | 2017-06-28 | 2017-06-28 | The safety device of adjustable combustion gas blocking flow and the burnt gas switch for possessing such a device |
Country Status (1)
| Country | Link |
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| CN (1) | CN206972994U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027504A (en) * | 2018-10-25 | 2018-12-18 | 天津市源翔市政工程有限公司 | A kind of gas pipeline flow regulator |
-
2017
- 2017-06-28 CN CN201720763659.1U patent/CN206972994U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027504A (en) * | 2018-10-25 | 2018-12-18 | 天津市源翔市政工程有限公司 | A kind of gas pipeline flow regulator |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |