CN2065735U - Timing automatic cut-off device for burning gas - Google Patents

Abstract

The utility model discloses a timing automatic cut-off device for the burning gas, which is composed of a timer, a valve body, a valve cover, a valve base, a valve rod, a valve clack, a contact, a pressure spring and a diaphragm. The timing automatic cut-off device for the burning gas is characterized in that the diaphragm can seal the gas path, and the sealing valve hole of the seal valve is forced the double action of a pressure spring and the gas pressure. The timing automatic cut-off device for the burning gas has the advantages of good tightness, no leakage, convenient operation and safe utilization.

Description

Timing automatic cut-off device for burning gas

The utility model relates to the timing automatic gas-cutting off device of combustion gas that a kind of pendulum-type timer that is used as power by the steel clockwork spring and diaphragm type burnt gas valve form and is suitable for coal gas, liquefied gas cooking stove.

Disclosed gas timing control device among disclosed liquid timing valve and the CN88212760 among prior art such as the CN89202562, they are made up of timer and push type burnt gas valve, utilize timing cam by lever or directly handle and push the valve rod by-pass valve control and open and close, its weak point is, structurally pressure handle and valve rod are inseparable one, therefore can not stop to leak from valve rod the problem of combustion gas.

The purpose of this utility model is to provide a kind of can stop the timing automatic gas-cutting off device of diaphragm type combustion gas that combustion gas is leaked from valve rod.

Technical solution of the present utility model is, the timing automatic gas-cutting off device of forming by shell 1, valve body 14, valve gap 10, valve rod 16, flap 17, stage clip 12 and timer of combustion gas, it is characterized in that, valve seat 13 is fixedly mounted in the valve body 14 by screw thread, be processed with the valve opening 19 of up/down perforation on the valve seat 13, the lower end of valve opening 19 is abducent tapering mouth and directly communicates with the valve body air inlet, has the side opening 20 that leads to the valve body gas outlet from valve opening in the side of valve seat 13; Valve rod 16 places in the valve opening, its upper end is by stage clip 12 supportings that place on the valve seat inner convex platform, the periphery that its lower end is connected with the flap 17 dish-shaped soft barrier films 11 of the corresponding tapering of valve seat tapering mouth is pressed abd fixed on the valve body Zhong Kou edge with valve gap 10, and valve rod 16 is enclosed in the valve body.The lower end of contact 9 places the top of barrier film 11 relative with the valve stem tip under the barrier film, and the top of contact 9 is stretched out with timer cam 4 from the centre bore of valve gap 10 and joined.The utility model is when air feed not, and valve rod is subjected to the stage clip supporting to be in upper limit position, flap sealing valve opening, and the contact top is stuck in the indent of timer cam, the timer knob nulling; During air feed, reverse knob clockwise regularly, cam is released its recess with knob rotation synchronously with contact and is pressed down, contact is passed to valve rod to pressure by barrier film, valve rod moves down, and stage clip is compressed, and flap leaves valve opening, gas circuit is open-minded, when the timer cam was got back to original position, the contact top was in cam notches, cam to the pressure of contact remove valve rod in the stage clip effect next time to upper limit position, flap is closed again, and gas circuit is cut off.

The utility model has the advantages that,, valve rod is enclosed in the valve body, stopped the problem of prior art from valve rod leakage combustion gas owing to gas circuit is sealed with barrier film; Advantages such as flap seals valve opening pressurized spring and gaseous-pressure double reaction plus, and good seal performance is leaked so the utlity model has not have, and is easy to use, safe and reliable.

Following accompanying drawing is an embodiment of the present utility model.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is an A-A cutaway view among Fig. 1.

The balance wheel type timer that the utility model adopts the steel clockwork spring to be used as power, timer movement 24 is fixed in the shell 1, and 4 is the timer cam among the figure, and 3 is timer knob, and 2 is the timer face.The ironcasting of valve body 14 for having S type gas circuit, the valve seat 13 of nylon system is fixedly mounted in the valve body by screw thread, 15 is sealing ring, be processed with the valve opening 19 of up/down perforation on the valve seat 13, the lower end of valve opening 19 is abducent tapering mouth, directly communicate with the valve body air inlet, at the valve body air inlet with the fixing suction nozzle 23 of nylon system of screw thread; The side of valve seat 13 has the side opening 20 that leads to the valve body gas outlet from valve opening 19, place, valve body gas outlet screw thread is the outlet nozzle 22 of nylon system fixedly, the valve rod 16 of nylon system places in the valve opening 19, its upper end is by stage clip 12 supportings that are sitting on the valve seat inner convex platform, its lower end connects flap 17 with nut 18, flap is to make with vulcanie, has and the corresponding tapering of valve opening lower end tapering mouth.Dish barrier film 11 is to make with soft rubber, places the valve body mouth to locate to screw on valve gap 10 in barrier film 11 again.Inner convex platform with valve gap is pressed abd fixed on the periphery of dish-shaped barrier film on the valve body Zhong Kou edge, valve stem seal in valve body, be installed on the valve gap in order to the contact 9 of handling valve rod, its lower end places diaphragms relative with the valve stem tip under the barrier film, and its top is stretched out with timer cam 4 from the centre bore of valve gap and joined.In the present embodiment for the ease of adjusting timer and valve installation site in the enclosure, between contact 9 and the timer cam 4, connecting by linkage as shown in the figure is that an end of connecting rod 5 and connecting rod 8 is separately fixed on the same sleeve pipe 6, sleeve pipe 6 is enclosed within on the axle 7 rotationally, axle 7 usefulness screw threads are fixed on the bearing 25, the other end of connecting rod 8 is fixedlyed connected with the contact top, and the other end of connecting rod 5 and timer cam join.When timer knob rotated counterclockwise, gas valve can often be opened, and had timing and often open dual-use function extremely easy to use.

Claims (1)

1, the timing automatic gas-cutting off device of a kind of combustion gas is made up of shell 1, valve body 14 valve gaps 10, valve rod 16, flap 17, stage clip 12 and timer.It is characterized in that valve seat 13 is fixedly mounted in the valve body 14 by screw thread, be processed with the valve opening 19 of up/down perforation on the valve seat 13, the lower end of valve opening 19 is abducent tapering mouth and directly communicates with the valve body air inlet.Have the side opening 20 that leads to the valve body gas outlet from valve opening in the side of valve seat 13, valve rod 16 places valve opening 19, its upper end is by stage clip 12 supportings that place on the valve seat inner convex platform, its lower end is connected with the flap 17 with the corresponding tapering of valve opening tapering mouth, the periphery of the soft barrier film 11 of dish is pressed abd fixed on the valve body Zhong Kou edge with valve gap 10, valve rod 16 is sealed in the valve body, contact 9 is installed on the valve gap of barrier film top, its lower end places the top of barrier film 11 relative with the valve stem tip under the barrier film, and its top is stretched out with timer cam 4 from the centre bore of valve gap 10 and joined.

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