CN209569374U - Gas timing device - Google Patents

Abstract

A kind of gas timing device, the shell of first and second housing chamber is defined comprising inside, and it is respectively arranged on the inlet suction port and air outlet adapter of shell two sides, first housing chamber is equipped with timer, second housing chamber is equipped with transmission mechanism, it is equipped with the time-delay valve interlocked with transmission mechanism in inlet suction port, the safety valve for being maintained at valve opening position usually is equipped in air outlet adapter, air outlet adapter is equipped with involution button.When starting timer, transmission mechanism is driven by timer and time-delay valve is pushed to retreat, and keeps fuel gas path unimpeded.When setting time then, time-delay valve involution is in situ and interdicts combustion gas.When safety valve occludes fuel gas path due to the gaseous-pressure difference in its front and rear is greater than preset pressure, involution button is depressed, homing is restored gas circulation by safety valve, keeps safety valve more convenient in involution operation.

Description

Gas timing device

Technical field

The utility model refers in particular to a kind of combustion gas in limited time for having safety valve involution button about a kind of gas timing device Valve.

Background technique

No. M567325/Chinese utility model patent the application of TaiWan, China new patent proposed on behalf of the applicant Number 201820944605.X " gas closes device in limited time ", core component include shell, timer, time-delay valve and transmission mechanism. Wherein, shell two sides are separately connected inlet suction port and air outlet adapter；Timer includes knob, shaft and brake component；Time-delay valve packet It is maintained at the valve body in occlusion outlet duct by spring force usually containing valve rod, loaded on valve rod；Transmission mechanism includes connecing with brake component The rocker arm of touching, and the rocking bar of connection valve rod.When turning knob setting gas prescribes a time limit the shut-in time, shaft turns with knob is same, and Turntable by being incorporated in end facilitates brake component to be deflected outward, and rocker arm and rocking bar is made to generate identical swing, while rocking bar band Ovable valve stem and valve body retreat, and open outlet duct.When setting time then, valve body and transmission mechanism homing and occlude outlet Duct stops gas supply.

The gas timing closer also includes a safety valve being located in air inlet port, in gas normal use When, it is less than the elastic force of compressed spring in front of safe valve plug with the gas pressure difference at rear.Therefore, safe valve plug is by the spring Power compels rearward, to keep unimpeded air inlet port.When being abnormal situation, as defeated between timing closer and gas Tracheal rupture, the appendix front end are fallen off by gas or gas is not used for a long time, lead to watt in the appendix When this stream leakage is beyond setting value, the gas pressure difference in front of safe valve plug with rear will be greater than spring force, make safe valve plug can be by Before this pressure and then air inlet port is occluded, stops gas supply, avoids causing gas explosion.

Since gas timing closer is a kind of valve of closed gas access in limited time, therefore before using gas, Gas timing closer must first be started, keep gas pathway patency.Therefore, when gas igniting not at when, it is common Situation is that safe valve plug occludes air inlet port because of above-mentioned abnormal conditions, interdicts gas access.At this point, timer need to be rotated Knob to " pass " and position, make the valve body involution valve closing position of time-delay valve.After the exclusion of above-mentioned unusual condition, turning knob is extremely " Open " or " full-time open " position, to push safe valve plug to retreat by the actuator arm separated from rocking bar, at this time due to gas access It has been occluded that, disappeared in front of safe valve plug with the gas pressure difference at rear, retreat safe valve plug can by spring force and involution valve opening Position restores gas circulation, then turn knobs once again, resets the time.In this way, turn knobs three times, can restore back and forth Originally normal operating condition keeps gas timing closer upper not easy enough in the involution operation of safety valve.

Utility model content

To solve the above problems, safety valve can be made to exist the purpose of the utility model is to provide a kind of gas timing device Involution is more convenient when operating.

To achieve the above object, the utility model takes following technical scheme:

The utility model gas timing device includes a shell, and the inside of the shell is divided into one first housing chamber by a partition With one second housing chamber, it is equipped with a timer in the first shell room, a transmission by timer driving is equipped in the second shell room Mechanism；The two sides of the shell respectively connect an inlet suction port and an air outlet adapter, and the inlet suction port and air outlet adapter are respectively along it An air inlet port and an outlet duct are axially opened up, the air inlet port, the second housing chamber and outlet duct constitute a fuel gas path.Its In, a time-delay valve interlocked with the transmission mechanism is equipped in the air inlet port, which is maintained at valve closing position usually and occludes The fuel gas path；A safety valve is equipped in the outlet duct, which is in valve opening position usually, and the outlet duct is made to keep smooth It is logical；The air outlet adapter is equipped with an involution button.When the timer is activated, which is driven by the timer and is driven The time-delay valve retreats, and keeps unimpeded the fuel gas path.When timer setting time then, time-delay valve involution it is in situ and Occlude the fuel gas path.When the safety valve occludes the venthole due to gaseous-pressure difference in its front and rear is greater than preset pressure When road, the involution button is depressed, which makes the outlet duct restore unimpeded homing.

The involution button include one be locked in the bushing of the air outlet adapter, one pass through the bushing be the button bar slided up and down, One is assembled in the compression spring of the button bar periphery, and is incorporated in the ring element and a button cap of the button bar upper end, under the button bar End is protruded into the outlet duct in front of the safety valve, and the both ends of the compression spring are held in the bushing and ring element respectively.

The safety valve includes the safe valve plug of a cylindric emergency valve seat and a umbrella, the peripheral ring of the emergency valve seat Around a groove, a bolt is inserted into the groove from the bottom of the shell, which is maintained in the outlet duct；The safety The front end of valve plug forms bar point, which proceeds to the venthole in front of the emergency valve seat when the safe valve plug actuation In road.

The back segment bottom of the air outlet adapter is equipped with a positioning groove and two screw holes, to install a fixed plate；The fixed plate With a positioning convex portion, two lock holes and two mounting holes；The fixed plate is agreed with by the positioning convex portion and the locating slot, and respectively The bottom of the shell is locked in from the two-screw of the two lock holes precession two screw hole, which supplies other two-screw respectively The fixed plate is locked on a wall.

The back segment of the inlet suction port forms an outer screw section or a joint portion, to connect the inflow segment of an appendix；It should The leading portion of air outlet adapter forms an outer screw section or a joint portion, to connect the outflow section of the appendix.

The inlet suction port is connected after being individual manufactures with the shell；The air outlet adapter is integrally formed with the shell.

The dynamic valve of a heat is further provided in the air inlet port, which moves valve and automatically close up when temperature is higher than limiting temperature The air inlet port.

The shell include one extend to the pole socket of second housing chamber from the partition and one communicates with second housing chamber into Gas side interface, which is a preceding small, rear big different diameter hole, and forms a cyclic annular segment difference section between, and with The air inlet port and the second housing chamber are linked up in the channel that the aperture section is constituted；The leading portion of the inlet suction port forms a cylindrical portion, the circle Canister portion is inserted in the air inlet side interface；The transmission mechanism includes a rocking bar；The time-delay valve includes a valve for being supported in pole socket sliding Bar, one end of the valve rod and a side contacts of the rocking bar, opposite end connect a valve block, and the valve block is equipped with a valve body and a pressure Contracting spring, the both ends of the compressed spring are held in the valve block respectively and one is maintained at spring base in the air inlet port, the valve Body is sealed at the segment difference section by the elastic force of the compressed spring usually and occludes the channel.

The pole socket has a sliding slot, and after which puts into the sliding slot, the flap for being locked in the pole socket with one closes the cunning Slot makes the valve rod be held in sliding slot sliding.

For the peripheral ring of the cylindrical portion around a groove, the jack that an at least fastener is set to the housing bottom from one is inserted into the ditch The cylindrical portion is maintained in the air inlet side interface by slot.

The beneficial effects of the utility model are: the utility model has safety valve involution button, a simple button is only needed Movement, can make safety valve homing, have the characteristic convenient for operation.Detailed technology content as the utility model and its His purpose and feature can be fully appreciated that referring to the embodiment explanation of following cooperation attached drawing.

Detailed description of the invention

Fig. 1 is the outside drawing of the utility model gas timing device.

Fig. 2 is the element exploded view of the utility model.

Fig. 3 is the partial exploded view at another visual angle of the utility model.

Fig. 4 is axial direction (fuel gas flow direction) sectional view of the utility model, and display delayed valve, safety valve and the dynamic valve of heat are protected The state in valve closing position is held, wherein arrow indicates fuel gas flow path, similarly hereinafter.

Fig. 5 is the sectional view of the line A-A along Fig. 4.

Fig. 6 is the sectional view of the line B-B along Fig. 4, and display inlet suction port is snapped in the state of intake interface by fastener.

Fig. 7 is the sectional view of the line C-C along Fig. 4, the state that the notch of the trip and turntable that show brake component agrees with.

Fig. 8 be the utility model axial section, the actuation of display delayed valve at valve opening position state.

Fig. 9 is the sectional view of the line D-D along Fig. 8.

Figure 10 be along Fig. 8 E-E line sectional view, display knob forward turn to maximum angle when, bar and limit shelves Touch the state of limited post and stop respectively simultaneously.

Figure 11 is the sectional view with the same face of Figure 10, when showing the reverse turn of knob to maximum angle, bar and limit Shelves touch the situation of limited post and stop respectively simultaneously.

Figure 12 is the axial section of the utility model, and when showing safe valve plug actuation into valve closing position, pressure involution button will The situation that safe valve plug pushes backward.

Figure 13 is the axial section of the utility model, shows that the dynamic valve plug actuation of heat at valve closing position, occludes air inlet port Situation.

Figure 14 is another embodiment outside drawing of the utility model.

Figure 15 is the axial section of Figure 14, and the situation of fixed plate is installed in display additional.

Drawing reference numeral: 10,10a: gas timing device；11,11a: shell；12: inlet suction port；13,13a: air outlet adapter； 14: timer；15: transmission mechanism；16: time-delay valve；17: safety valve；18: involution button；19: the dynamic valve of heat；20: segment difference section；21: convex Edge；22: partition；23: the first housing chambers；24: the second housing chambers；25: cap；26: screw；27: sealing ring；28: air inlet side interface； 29: channel；30: segment difference section；31: pin hole；32: jack；33: outer screw section；33a: hose joint portion；34: air inlet port；35: Cylindrical portion；36: outer screw section；37:O shape ring；38: fastener；39: groove；40: outlet duct；41:O shape ring；42: pole socket；43: Sliding slot；44: screw hole；45: machine core；46: brake component；47: instruction disk；48: knob；49: screw；50: column component；51: clockwork spring； 52: shaft；53: gear train；54: bracket；55: turntable；56: bar；57: notch；58: limited post；59: elastic slice；60: segment difference Portion；61: pillar；62: trip；63: arrow；64: button head；65: bar axis；66: rocker arm；67: rocking bar；68: pilot hole；69: negative spiral shell Line portion；70: valve rod；71: valve block；72: valve body；73: spring base；74: compressed spring；75: head；76: emergency valve seat；77: Bracket；78: safe valve plug；79: compressed spring；80: groove；81: logical circulation road；82: segment difference section；83: bolt；84:O shape ring；85: Sleeve；86: rack body；87: slide bar；88: bar point；89: bar tail；90: bracket；91: the dynamic valve plug of heat；92: compressed spring；93: Solder；94: bracket body；95: fin；96: sets of holes；97: short tube；98: chamber；99: strainer；100: screw；101: support plate； 102: connector；103: location hole；104: axle sleeve；105: stop；106: bolt；107: axle portion；108: trip；109: outer portion； 110: limit shelves；111: jack；112: horizontal screw；113: straight screw hole；114: screw；115: tongue-and-groove；116: screw hole；117: spiral shell Silk；118: shallow slot；119: spike；120: screw；121: washer；122: screw；123:O shape ring；125: flap；126: screw Hole；127: screw；128: axis hole；130:O shape ring；131: bushing；132: button bar；133: compression spring；134: button cap；135: sun Screw thread；136:O shape ring；137: rod aperture；138: ring element；139: segment difference section；140: fixed plate；141: positioning convex portion；142: lock Determine hole；143: mounting hole；144: locating slot；145: screw hole；146: screw.

Specific embodiment

As shown in Figures 1 to 5, the gas timing device 10 that the utility model discloses includes a shell 11, outside the shell 11 Shape is substantially cylindric, and bottom expands outwardly the flange 21 to form a fillet quadrangle, and inner space is by about 22 partition It is divided into one first housing chamber 23 and one second housing chamber 24, which is used to receiving a timer 14 and a transmission mechanism 15 Members；Second housing chamber 24 is used to install another part component of the transmission mechanism 15, and the bottom opening of the second housing chamber 24 It is closed by one using the cap 25 that plural screw 26 is locked on flange 21, while being assembled in the sealing of 11 bottom of shell with unification Ring 27, formation is reliable airtight between cap 25 and the contact surface of shell 11, closes the second housing chamber 24 whereby, prevents combustion gas from letting out Leakage.The side of shell 11 also provides an air inlet side interface 28 for used in one inlet suction port 12 of connection, which is one Preceding small, the rear big different diameter hole of internal diameter, and the channel 29 for forming a cricoid segment difference section 30 between, and being constituted with aperture section Link up the second housing chamber 24.The bottom of shell 11 is equipped with a jack 32 communicated with air inlet side interface 28 again, the segment difference section 30 and inserts The effect in hole 32 remains aftermentioned, skips over for the time being.

The shell 11 further includes an air outlet adapter 13 for being set to 28 opposite side of air inlet side interface, the air outlet adapter 13 An outlet duct 40 is opened up along its axial direction, and leading portion forms an outer screw section 33 to connect the outflow of an appendix (not shown) Section.In the examples in the drawings, air outlet adapter 13 constitutes a part of shell 11, i.e. air outlet adapter 13 and shell 11 is integrated into Type, but after air outlet adapter 13 and shell 11 can also manufacture individually, it is connected by screw thread or other well-known techniques, not by attached drawing reality Apply the limitation of example.In addition, the bottom of shell 11 is equipped with a pin hole 31 communicated with outlet duct 40, after effect equally remains It states.

The inlet suction port 12 opens up an air inlet port 34 along its axial direction, which is with the different of several apertures Diameter hole, and a fuel gas path (unnumbered) is constituted with outlet duct 40 with channel 29, the second housing chamber 24, combustion gas is following the combustion gas to lead to Road flowing, and it is flow to Gas appliance via the outflow section of the appendix, supply burning needs to use.The leading portion of inlet suction port 12 is cylinder Portion 35, back segment are outer screw section 36, which is inserted in air inlet side interface 28, until the middle section (unnumbered) of inlet suction port 12 Until the side for touching shell 11, and two O-rings 37 by being assembled in 35 periphery of cylindrical portion, it is flanked in cylindrical portion 35 with air inlet It generates appropriate airtight between mouthfuls 28 contact surface, while an at least fastener 38 being cooperated to prevent inlet suction port 12 from loosening.The fastener 38 is general in oblateness, and keeps cylindrical portion 35 in the groove 39 of 35 periphery of cylindrical portion (Fig. 6) via the insertion of jack 32 one In air inlet side interface 28, inlet suction port 12 is made to be connected with shell 11, and inlet suction port 12 is allowed to rotate by a small margin, convenient for peace It can optionally rotate and adjust the angle when dress.The outer screw section 36 is used to connect the inflow segment of the appendix.

The timer 14 includes a support plate 101, a machine core 45, a connector 102, a brake component 46, one instruction disk 47 With a knob 48.Wherein, support plate 101 is made of metal material, and is locked in the first housing chamber 23 using one group of screw 49 On one group of column component 50, bottom is equipped with several location holes 103, and center has an axle sleeve 104, which includes one from outside it All outwardly extending stops 105.Machine core 45 includes a bracket 54, if the upper surface of the bracket 54 has bolt stem 106, each bolt In 106 insertion a positioning holes 103, it is maintained at machine core 45 in first housing chamber 23 of 101 lower section of support plate.Machine core 45 further includes branch Support the clockwork spring 51 in bracket 54, a shaft 52 and the gear train (Gear Train) 53 that is made of several pairs of gears.Wherein, turn The lower end of axis 52 has a turntable 55, and centre is equipped with a bar 56, and the circumference of the turntable 55 has a notch 57；The bar 56 with One limited post 58 being set to above bracket 54 is cooperated, and the two constitutes the basic limiting device of timer 14, to limit knob 48 Maximum rotating angle.Connector 102 also forms for metal material processing, and the axle portion 107, one for being formed in lower section comprising one is formed in The limit shelves that the trip 108, one of the side outer portion 109, one concentric with axle portion 107 extends internally from the inner circumferential of outer portion 109 110, the horizontal screw 112 that a downward opening non-circular jack 111, one is communicated set on trip 108 with jack 111, and be set to The straight screw hole 113 of the two of trip 108.Wherein, the axle portion 107 of connector 102 is inserted in the axle sleeve 104 of support plate 101, and the two keeps clearance Cooperation；After the upper end insertion jack 111 of shaft 52, is locked by the screw 114 of a precession horizontal screw 112, make connector 102 and shaft 52 combine, and are supported in the rotation of support plate 101.Brake component 46 is articulated on bracket 54, and is cooperated with an elastic slice 59, the elastic slice Brake component 46 is fixed in 59 one end, and opposite free end extends to the rear of the wherein pillar 61 of bracket 54；Brake component 46 is also Comprising one towards 55 direction of turntable extend trip 62, when this trip 62 is flat be embedded in turntable 55 notch 57 (Fig. 7), when turntable 55 with When shaft 52 rotates, turntable 55 will push brake component 46 to swing out, and trip 62 is made to exit notch 57 and the circumference with turntable 55 It contacts (Figure 10), while the free end contact of elastic slice 59 makes elastic slice 59 lay in elastic energy, elastic force makes to brake whereby in pillar 61 Part 46 is maintained at tensioning state, and when turntable 55 turns to positioning, the power source of notch 57 is automatically inserted as trip 62. The instruction disk 47 is upper end that is round and being assembled in shell 11, and the open and close of disk mark full-time the texts such as open and indicate the time Number with scale (not shown).Knob 48 is made of transparent plastic material, and is maintained at the top of shell 11 and is surrounded and refer to Show that disk 47 rotates, for manually setting shut-in time and the valve position in limited time of time-delay valve 16.Knob 48 is formed in upper surface comprising one Arrow 63 and the button head 64 that projects upwards from center, the arrow 63 cooperation instruction disk 47 are used to indicate that time and valve position.Button First 64 are equipped with a downward opening tongue-and-groove 115, and through the two-screw hole 116 of tongue-and-groove 115, which allows connector 102 Trip 108 is embedded in, and screw hole 116 is used to install screw 117, the joggle and connector that knob 48 passes through trip 108 and tongue-and-groove 115 After 102 combine, then with the locking of screw 117 of the straight screw hole 113 of precession two, so that connector 102 can be passed through when turn knobs 48 It conveys and rotates to shaft 52.The upper surface of button head 64 also has a shallow slot 118, to install a spike 119, reaches cover screw The effect on 117 heads.

The stop 105 of the support plate 101 and the limit shelves 110 of connector 102 constitute auxiliary stopper device, keep knob 48 suitable To/reverse maximum rotating angle terminate in limit shelves 110 touch respectively simultaneously with bar 56 stop 105 and limited post 58 (Figure 10 and 11).By forward turning knob 48, combustion gas can be set within the scope of certain time and prescribed a time limit the shut-in time.When backwards rotation is revolved When button 48 to arrow 63 is directed toward " full-time to open " position on instruction disk 47, time-delay valve 16 can be made to remain in the normally open position, at this time Timer 14 does not have clocking capability.Since support plate 101 is that metal material is made with connector 102, by stop 105 with The limiting device that shelves 110 are constituted is limited, there is enough intensity, bigger operational torque can be born.

The transmission mechanism 15 includes a bar axis 65, a rocker arm 66 and a rocking bar 67.Wherein, bar axis 65 passes through partition 22 Axis hole 128 rotates freely, and both ends are kept at the first housing chamber 23 and the second housing chamber 24, while cooperating at least one to be assembled in The O-ring 123 of axle body and the contact surface of axis hole 128 are reached airtight.One end of rocker arm 66 is with a screw 120 with unification washer 121 It is locked in the upper end of bar axis 65, the other end is contacted with brake component 46, makes rocker arm 66 that can be pushed and be swung out by brake component 46.It shakes One end of bar 67 is locked in the lower end of bar axis 65 with a screw 122, to push a time-delay valve 16.

The time-delay valve 16 is mounted on the leading portion of air inlet port 34, and core component includes a valve rod 70, a valve block 71, one Valve body 72, a spring base 73 and a compressed spring 74.Wherein, valve rod 70 is supported in a pole socket 42 sliding, and the pole socket 42 is from partition 22 extend downwardly, with one with air inlet port 34 in the sliding slot 43 of same axis, and be respectively arranged on the spiral shell of 43 two sides of sliding slot A flap 125 after valve rod 70 is placed in sliding slot 43, then is locked in hole 44, which has two-screw hole 126, two-screw 127 Respectively by two screw holes 44 of 126 precession pole socket 42 of two-screw hole, flap 125 being locked in below pole socket 42 to close and slide Slot 43 makes valve rod 70 be held in 43 linear slide of sliding slot, and valve body 72 is avoided to deviate.Valve rod 70 has the head in opposite end 75 are kept in contact with bar tail (unnumbered), the head 75 and the side of rocking bar 67, and bar tail is connected to valve block 71, and valve body 72 is installed On valve block 71, make that valve body 72 can be with the back/forward of valve rod 71 and actuation reaches opening and closing at valve opening position/involution valve closing position The effect of fuel gas path.Spring base 73 is maintained in air inlet port 34 in spoke-like, to support compressed spring 74.Compressed spring 74 snares are in valve block 71, and both ends respectively withstand valve block 71 and spring base 73 and are in tensioning state, to pass through its elasticity Power makes valve body 72 be maintained at valve closing position usually and occlude channel 29.In this way, head 75 can be pushed to make valve rod when rocking bar 67 is swung 70 and valve body 72 retreat, open air inlet port 34 lead to the second housing chamber 24 channel 29, keep fuel gas path it is unimpeded.When valve rod 70 When advancing because of the elastic force of compressed spring 74,67 backswing of rocking bar is pushed by head 75, makes valve rod 70 and valve body 72 Preceding and then be sealed at segment difference section 30, closed channel 29 occludes fuel gas path, stops gas supply.

As shown in Fig. 4,5 and 7, in 14 closed state of timer, the trip 62 of brake component 46 is embedded in the notch of turntable 56 In 57, valve body 72 is maintained at the position of occlusion fuel gas path at this time.

As shown in Figures 8 to 10, when forward turning knob 48 to arrow 63 is directed toward on instruction disk 47 " open " (Figure 10 is for position With knob 48, forward turn makes limit shelves 110 touch stop 105 and limited post 58 respectively simultaneously with bar 56 to maximum angle Show), setting gas prescribe a time limit the shut-in time when, shaft 52 and will drive the clockwork spring 51 inside machine core 45 to crispatura with knob 48 with turning, So that its deposit elasticity energy the rotary motion of certain time can be communicated to gear train 53 when this energy discharges slowly, be reached Timing effect；Meanwhile the notch 57 of turntable 56 no longer agrees with trip 62 with turntable 56 and same turn of shaft 52, makes turntable 56 Change and touched with its circumference with trip 62, and push brake component 46 to be deflected outward when the two is touched, makes to be connected by bar axis 65 Rocker arm 66 and rocking bar 67 generate identical swing, then convey and move along a straight line from the oscillating motion of rocking bar 67 to valve rod 70, make to connect It ties the retrogressing of valve body 72 in valve rod 70 and opens fuel gas path, allow combustion gas to flow out supply from outlet duct 40 and use.In valve rod When 70 retrogressing, compressed spring 74 is accumulated elastic energy by compression simultaneously.

When 14 timing of timer ends (setting time is then), the notch 57 of turntable 56 is by the face with the rotation of turntable 56 To trip 62, turntable 56 is set to disappear by the strength that transmission mechanism 15 is added in time-delay valve 16, then compressed spring 74 is released It is elastic can, by 15 pushed home of transmission mechanism, trip 62 is made to automatically insert the notch 57 of turntable 56, while valve body 72 is also with shaking 67 homing of bar and be sealed at segment difference section 30, occlude fuel gas path, interdict combustion gas automatically, reach energy conservation and security purpose.

As shown in figure 11, when backwards rotation knob 48 to arrow 63 is directed toward on instruction disk 47 " full-time open " position when (this Figure is so that limit shelves 110 is touched stop 105 and limited post respectively simultaneously with bar 56 with the reverse turn of knob 48 to maximum angle 58 illustrate), timer 14 will drive time-delay valve 16 to retreat by transmission mechanism 15, keep unimpeded fuel gas path, while shaft 52 with knob 48 when reversing, the effect for clockwork spring 51 of not crispaturaing, therefore timer 14 exists " full-time open " position is without limiting time-delay valve 16 When the function closed.When knob arrow 63 is directed toward on instruction disk 47 " open " or " full-time open " and position when, by 48 turn of knob to " Close " position, 72 involution valve closing position of valve body can be forced, fuel gas path is closed.

In the preferred embodiment, as shown in Fig. 2,4 and 5, a safety valve can be set in the inflow side in outlet duct 40 17.The safety valve 17 includes an emergency valve seat 76, a bracket 77, a safe valve plug 78 and a compressed spring 79.Wherein, safety valve Seat 76 is cylindrical shape, and outside has small, rear big logical circulation road 81 before an aperture, the logical circulation road around an annular ditch groove 80, inside 81 secondly form a cyclic annular segment difference section 82 between aperture, emergency valve seat 76 is packed into the inflow in outlet duct 40 by interference engagement Side, and be maintained in outlet duct 40 with unification from the bolt 83 of above-mentioned pin hole 31 insertion annular ditch groove 80, prevent emergency valve seat 76 axial movements, while respectively using the O-ring 84/41 for being assembled in 76/ bolt of emergency valve seat, 83 periphery respectively in emergency valve seat It is formed between 76 and 40/ bolt 83 of outlet duct and the contact surface of air outlet adapter 13 reliable airtight.The bracket 77 includes a set of Cylinder 85 and a rack body 86, which is inserted in the back segment of logical circulation road 81 using interference engagement, until front end contact is in segment difference Portion 82；The rack body 86 is integrally formed at the rear of sleeve 85.The shape of the safe valve plug 80 is generally in umbrella, is had One is formed in the bar point 88 of front end, the rear end of the slide bar 87 across the slide bar 87 of the central axial sliding of rack body 86 and one With the outer diameter bar tail 89 big compared with its bar diameter to support compressed spring 79；The bar point 88 retraction branch when safe valve plug 78 is static In frame 77, when safe 78 actuation of valve plug, which is proceeded in the outlet duct 40 in 76 front of emergency valve seat.The pressure Contracting spring 79 is assembled in the periphery of slide bar 87, and contact is distinguished in rack body 86 and bar tail 89, to pass through its elastic force in both ends Safe valve plug 78 is maintained at valve opening position.

As shown in Fig. 1,2 and 4, in the preferred embodiment, one and outlet duct are equipped with above the back segment of air outlet adapter 13 40 pilot holes 68 communicated, for installing a safety valve involution button 18, the involution button 18 include a bushing 131, a button bar 132, One compression spring 133 and a button cap 134.Wherein, bushing 131 is the ducted body of outer diameter upper big, lower small, and lower part is equipped with pin thread 135, and after assembling an O-ring 130, bushing 131 is locked in air outlet adapter 40 by the female threaded portion 69 of precession pilot hole 68 On, while being formed between the contact surface of the two airtight；Bushing 131 also has one to open up along its axial direction, and both ends are big, intermediate small Rod aperture 137.The button bar 132 is the big end down round bar of an outer diameter, and the rod aperture 137 for passing through bushing 131 is to slide up and down, And the O-ring 136 for using one being assembled in lower shaft, it is generated between the contact surface of the two airtight；The lower end of button bar 132 is in safety In the outlet duct 40 in 17 front of valve and it is modified into round end shape, this design helps to be formed with the bar of safe valve plug 78 point 88 preferable Contact, and then safe valve plug 78 is pushed to retract original position.133 snare of compression spring is in the upper shaft of button bar 132, and button cap 134 are connected to the upper end of button bar 132, make segment difference section 139 and a knot of the both ends of compression spring 133 respectively against button bar 132 It closes the ring element 138 in 132 upper end of button bar and is maintained at tensioning state.To, when depress button cap 134, button bar 132 synchronization to Lower movement；When decontroling button cap 134, button bar 132 and button cap 134 will pass through the elastic force homing of compression spring 133.

As shown in figs. 4 and 5, when Gas appliance normal use, safe 78 front of valve plug is poor with the gaseous-pressure at rear Less than the elastic force of compressed spring 79.Therefore, safe valve plug 78 is compeled rearward, to make the logical circulation road of emergency valve seat 76 by the elastic force 81 keep unimpeded, and the gap that then combustion gas follows rack body 86 circulates road 81 and the outlet duct 40 that arrives, then via outlet Duct 40 flow to Gas appliance.

As shown in figure 12, when the abnormal conditions as described in prior art occur, the combustion in safe valve plug 78 front and rear Atmospheric pressure difference is to be greater than the elastic force of compressed spring 79, allows safe valve plug 78 whereby before pressure and then is sealed at segment difference section 82, logical circulation road 81 is occluded, gas supply is stopped, avoiding causing gas explosion.After the exclusion of above-mentioned unusual condition, the button of involution button 18 is depressed Cap 134 makes button bar 132 move downward simultaneously and push the bar point 88 (being represented by dotted lines) of safe valve plug 78, and because of fuel gas path It has been occluded that, the gaseous-pressure difference in safe 78 front of valve plug and rear disappears, and makes safe valve plug 78 can be by the elasticity of compressed spring 79 Power retreats and involution valve opening position, opens outlet duct 40 again, restores gas supply.When should decontrol button cap 134, button bar 132 and button Cap 134 passes through the elastic force homing of compression spring 133, in case subsequent operation is used.

In the preferred embodiment, as shown in Fig. 2 and 4, the utility model includes one to be located at 34 back segment of air inlet port again The dynamic valve 19 of heat, it includes the dynamic valve plug 91 of 90, one heat of a bracket, a compressed spring 92 and eutectic solder 93 which, which moves valve 19,.Wherein, Bracket 90 includes a cylindric bracket body 94, and from the periphery of bracket body 94 to several fins 95 of external radiation, the support 90 one side of frame generates interference engagement by the outer rim of fin 95 and the inner wall of air inlet port 34, on the one hand by before fin 95 Edge withstands a segment difference section 60 for being formed in 34 back segment of air inlet port, to be fixed in air inlet port 34.Bracket body 94 is generally in Cylindrical shape, the compressed spring 92 that there are a sets of holes 96 valve plug 91 with part are moved with the heat of receiving portion for inside.The dynamic valve plug of heat 91 are welded on the front of bracket 90 with eutectic solder 93.Eutectic solder 93 is using fusible in temperature 80 and 100 DEG C range Kamash alloy be made.The dynamic valve plug 91 of heat is also axially rearwardly extending comprising one, and it is short in axial sliding for being inserted in sets of holes 96 Pipe 97, the inner tubal wall of the short tube 97 define a chamber 98, and to receive 88 back segment of slide bar and bar tail 89 of safe valve plug 80, this is set In respect of the length for helping shorten inlet suction port 12.The back segment of compressed spring 93 is inserted in the sets of holes 96 of bracket body 94, and leading portion encloses Around the outer tube wall of short tube 97, and both ends difference contact is in confined state in bracket body 94 and the dynamic valve plug 91 of heat.

It as shown in figure 13,, can be fast by heat-conduction effect when gas timing device 10 because when the factors such as fire are heated The temperature of inlet suction port 12 is reached eutectic solder 93 by speed；When the temperature of eutectic solder 93 is higher than its fusing point and melts, The effect of the dynamic valve plug 91 of fixed heat will be lost, then the dynamic valve plug 91 of heat is advanced with the elastic force of compressed spring 92, and is held in the palm being detached from In the way of frame ontology 94, by being slidably matched for short tube 97 and sets of holes 96, the dynamic valve plug 91 of heat is made impartially to be sealed at a shape At in the segment difference section 20 in 34 middle section of air inlet port, in this way, occluding air inlet port 34, combustion gas is interdicted, is avoided greater disaster.

Since safety valve 17 includes elongated compressed spring 79, and it is logical by the combustion gas of appendix supplied to Gas appliance Often containing the impurity of solid.Iron rust, dust in appendix etc. are the main pollution sources of solid impurity.If these pollutants are not It removes in advance, it is accumulating over a long period in compressed spring 79 as a result, the spring can be made to lose effectiveness, and then allow safe valve plug 78 can not Normal actuation.Therefore, in the preferred embodiment, as shown in Fig. 2 and 4, the utility model also includes a strainer 99, the strainer 99 Circle is made using stainless (steel) wire, and is locked on the bracket body 94 of the dynamic valve 19 of heat with a screw 100, is filtered out whereby with combustion gas The solid impurity of inflow avoids the accumulation of these pollutants in the compressed spring 79 of safety valve 17, it is ensured that safe valve plug 78 can Normal actuation.

Also, the outer screw section 36/33 of 12/ air outlet adapter 13 of inlet suction port of above-described embodiment is adapted to metal material system At rigidity or flexible appendix, but when appendix is rubber hose, which should be processed into such as Figure 14 institute The joint portion 33a (inlet suction port 12 of the present embodiment still maintains the pattern of outer screw section 36) shown, at this point, to avoid gas timing Device 10a and appendix shake because of non-rigid connection, in the preferred embodiment, as shown in Fig. 2 and the 3rd, the utility model A fixed plate 140 is further provided for, which is rectangle, and centre is equipped with a positioning convex portion 141, in positioning convex portion 141 Two sides respectively have a lock hole 142, be respectively equipped with a mounting hole 143 in the outside of two lock holes 142.In addition, air outlet adapter 13a Back segment bottom be equipped with a positioning groove 144, the two sides of this locating slot 144 are respectively provided with a screw hole 145.When gas timing device When 10a needs to reinforce fixed using fixed plate 140, the positioning convex portion 141 in fixed plate 140 is first made to be embedded in air outlet adapter 13a's Locating slot 144, then by two-screw 146 respectively via two screw holes of two lock hole of fixed plate 140,142 precession air outlet adapter 13a 145, so that fixed plate 140 is incorporated in the bottom (Figure 15) of shell 11a, then by other two-screw (not shown) respectively from fixed plate 140 two mounting holes 143 screw in wall and reach in this way, gas timing device 10a is locked on wall by fixed plate 140 The effect of reinforcing.The difference of the present embodiment and above-described embodiment essentially consists in the pattern of air outlet adapter, remaining construction is identical, Therefore part same as the previously described embodiments is with identical symbology, and is also applicable in previously for the explanation of above-described embodiment In the present embodiment, repeat no more.

Also, the gas timing device 10 as disclosed in Fig. 4, i.e. 12/ air outlet adapter 13 of inlet suction port is processed into outer screw section 36/33, and when connection pliability appendix, fixed plate 140 can also be cooperated to use, have the function that reinforcing.

Certainly, the above is only the preferred embodiment of the present invention, is not intended to limit the patent of the utility model Range, equivalent structure or equivalent flow shift made by using the description of the utility model and the drawings, or directly or Other related technical areas are used in indirectly, are also included in the patent protection scope of the utility model.

Claims (10)

1. a kind of gas timing device includes a shell, the inside of the shell is divided into one first housing chamber and one second by a partition Housing chamber is equipped with a timer in the first shell room, a transmission mechanism by timer driving is equipped in the second shell room；The shell The two sides of body respectively connect an inlet suction port and an air outlet adapter, and the inlet suction port and air outlet adapter open up one along its axial direction respectively Air inlet port and an outlet duct, the air inlet port, the second housing chamber and outlet duct constitute a fuel gas path；

It is characterized in that, being equipped with a time-delay valve interlocked with the transmission mechanism in the air inlet port, which is maintained at usually Valve closing position and occlude the fuel gas path；A safety valve is equipped in the outlet duct, which is in valve opening position usually, goes out this Stomata road is kept unimpeded；The air outlet adapter is equipped with an involution button；When the timer is activated, the transmission mechanism is by the timing Device drives and the time-delay valve is driven to retreat, and keeps unimpeded the fuel gas path；When the timer setting time then, the delay Valve involution is in situ and occludes the fuel gas path；When the safety valve is due to the gaseous-pressure difference in its front and rear is greater than preset pressure When occluding the outlet duct, the involution button is depressed, which makes the outlet duct restore unimpeded homing.

2. gas timing device as described in claim 1, which is characterized in that the involution button is locked in the outlet comprising one The bushing of connector, one pass through the bushing and are the button bar slided up and down, one are assembled in the compression spring of button bar periphery, and knot The ring element and a button cap in the button bar upper end are closed, the lower end of the button bar is protruded into the outlet duct in front of the safety valve, The both ends of the compression spring are held in the bushing and ring element respectively.

3. gas timing device as described in claim 1, which is characterized in that the safety valve includes a cylindric safety valve The safe valve plug of seat and a umbrella, around a groove, a bolt is inserted into the peripheral ring of the emergency valve seat from the bottom of the shell The emergency valve seat is maintained in the outlet duct by the groove；The front end of the safe valve plug forms bar point, bar point When the safe valve plug actuation, proceed in the outlet duct in front of the emergency valve seat.

4. gas timing device as described in claim 1, which is characterized in that the back segment bottom of the air outlet adapter is equipped with certain Position slot and two screw holes, to install a fixed plate；The fixed plate has a positioning convex portion, two lock holes and two mounting holes；This is solid Fixed board is agreed with by the positioning convex portion and the locating slot, and respectively from two spiral shells of two screw holes described in the two lock holes precession Silk is locked in the bottom of the shell, which is locked on a wall for other two-screw by two mounting hole respectively.

5. gas timing device as described in claim 1, which is characterized in that the back segment of the inlet suction port forms a pin thread Portion or a joint portion, to connect the inflow segment of an appendix；The leading portion of the air outlet adapter forms an outer screw section or an engagement Portion, to connect the outflow section of the appendix.

6. gas timing device as described in claim 1, which is characterized in that the inlet suction port and the shell are made to be individual It is connected after making；The air outlet adapter is integrally formed with the shell.

7. gas timing device as described in claim 1, which is characterized in that the dynamic valve of a heat is equipped in the air inlet port, it should The dynamic valve of heat automatically closes up the air inlet port when temperature is higher than limiting temperature.

8. gas timing device as described in claim 1, which is characterized in that the shell is extended to comprising one from the partition The pole socket of second housing chamber and the air inlet side interface that communicates with second housing chamber, the air inlet side interface are small, rear big before being one Different diameter hole, and form a cyclic annular segment difference section between, and with the channel that aperture section is constituted link up the air inlet port and Second housing chamber；The leading portion of the inlet suction port forms a cylindrical portion, which is inserted in the air inlet side interface；The driver Structure includes a rocking bar；The time-delay valve includes a valve rod for being supported in the pole socket sliding, one end of the valve rod and the rocking bar A side contacts, opposite end connect a valve block, the valve block be equipped with a valve body and a compressed spring, the both ends of the compressed spring It is held in the valve block and one respectively and is maintained at spring base in the air inlet port, the valve body passes through the compressed spring usually Elastic force is sealed at the segment difference section and occludes the channel.

9. gas timing device as claimed in claim 8, which is characterized in that the pole socket has a sliding slot, the valve rod dress Into after the sliding slot, the flap for being locked in the pole socket with one closes the sliding slot, and the valve rod is made to be held in sliding slot sliding.

10. gas timing device as claimed in claim 8, which is characterized in that the peripheral ring of the cylindrical portion around a groove, until The jack that a few fastener is set to the housing bottom from one is inserted into the groove, which is maintained at the air inlet side interface It is interior.