CN2369066Y

CN2369066Y - Control valve for regulating gas flow by air pressure

Info

Publication number: CN2369066Y
Application number: CN 98206018
Authority: CN
Inventors: 张木树
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-06-17
Filing date: 1998-06-17
Publication date: 2000-03-15
Anticipated expiration: 2008-06-17

Abstract

The utility model relates to a control valve for regulating gas flow along with the magnitude of air pressure. An air chamber is through arranged in a base of the utility model, one end of the air chamber is provided with a nozzle group which is communicated with a carrier pipe opening onto a furnace core, and an adjustable switch shaft is inserted in the air chamber for controlling the flow of gas entering the carrier pipe. An air pressure chamber communicated with the air chamber is arranged above the base, and an adjusting valve is installed in the air pressure chamber. A capturing valve handle is screwed in the adjusting valve. The outer margin of the capturing valve handle is provided with a thread section, and the front end of the capturing valve handle forms a pyramidal shape and is sheathed with a leak-proof cushion ring. The pyramidal part of the capturing valve handle extends to block an air outlet hole positioned at the bottom of the air pressure chamber. The utility model can make a gas cooking range adjust gas flow automatically according to air pressure in order to achieve complete combustion.

Description

Can adjust the control valve of gas flow with the air pressure size

The utility model is the control valve structure improvement about a kind of portable type gas-fired boiler, is meant a kind of control valve that can adjust gas flow with the pressure size voluntarily especially.

Press, a kind of portable type gas-fired boiler (as shown in Figure 1) of having had of market now, it mainly is provided with a body 1, be provided with an air storing duct 2 in this body, this air storing duct one end is airtight, other holds winding that one control valve 3 is arranged, this control valve of mat can replenish the gas stocking in the air storing duct, and the combustion gas in this air storing duct 2 of may command enters the flow of a combustion chamber 4, above-mentioned control valve 3 is except entering the flow of combustion chamber 4 with a knob 3 ' control combustion gas, and cooperates a modulating valve to regulate the pressure of combustion gas in control valve 3; Yet, for this control valve, the open flow of modulating valve is for fixing, but because the combustion gas reserves number in the air storing duct 2 forms different pressure, cause the fuel gas flow state labile that flows in the combustion chamber 4 when pressure (particularly combustion gas is bigger because of reserves have more) can't reach the control effect of expection, and unsettled flowing also form threat on safe to stove and accessory.

In view of this, main purpose of the present utility model is providing a kind of control valve that can adjust gas flow with the air pressure size.

In order to achieve the above object; design principle of the present utility model is: this control valve is the modulating valve that is provided with an adjustable fuel gas flow size; then be provided with one in this modulating valve and catch the system valve rod; make it can be with the size of gaseous-pressure; adjust the pressure that cooperates the deflagration gas of relaxing; make gas flow comparatively stable, to reach the purpose that safety is controlled the flow of combustion gas input combustion chamber and made combustion gas perfect combustion.

The concrete technological scheme that the utility model adopted is to be a kind of control valve that can adjust gas flow with air pressure size, mainly be to be provided with a pedestal, provided an air chamber in this pedestal, this air chamber one end is provided with a nozzle, this nozzle is the delivery pipe that combustion chamber is led in winding one, one adjustable switch axle is to be plugged in the flow that enters delivery pipe in this air chamber for the control combustion gas, being provided with one in the pedestal top again communicates in the air-pressure chamber of air chamber, be provided with a modulating valve in this air-pressure chamber, in this modulating valve and screwed togather one and catch the system valve rod, the system of the catching valve rod front end that its outer rim is provided with thread section is to be taper portion and to be equipped with leak-proof gasket, and this taper portion of catching the system valve rod can stretch into to block the air outlet hole that is positioned at the air-pressure chamber bottom; By the adjustment of catching the system valve rod air outlet hole adjustable gaps rectification of taper portion and air-pressure chamber is become, do suitable adjustment, obtain more stable gas flow with the air pressure that cooperates combustion gas.

Clearly, after having adopted technique scheme, when the combustion gas reserves in the air storing duct more and when causing air pressure big, its unsettled flow can make the air outlet hole space change of taper portion and air-pressure chamber by the adjustment of catching the system valve rod, and the air pressure that makes combustion gas is done suitable adjustment, obtain more stable gas flow, the auxiliary switch axle is sent in adjustment more stable accurate the control on the gas flow of delivery pipe.

Below, adopt a preferable feasible embodiment, after conjunction with figs. is described in more detail in, to increase to understanding of the present utility model now with regard to structure function of the present utility model.

Fig. 1: be gas-fired boiler structural representation commonly used.

Fig. 2: be control valve three-dimensional system diagram of the present utility model.

Fig. 3: be control valve side cross-sectional view of the present utility model.

Fig. 4: be the A-A cross-sectional view of the utility model Fig. 3.

See also Fig. 2, shown in 3, control valve of the present utility model mainly is to have a pedestal 10, this pedestal 10 is a square body, provided an air chamber 11 in the middle of it, these air chamber 11 outer ends are provided with screw thread can be for assembling one flow control valve 20, end in this air chamber 11 is to extend a venturi 1101, the end of this venturi 1101 is screw and supplies winding one outgassing nozzle 30, respectively be provided with an air-pressure chamber 12 and a nozzle of air supply 31 in these pedestal 10 upper and lower centers again, these air-pressure chamber 12 bottoms then are provided with an air outlet hole 1201 and can also can be replenished by nozzle of air supply 31 places when the combustion gas reserves in the air storing duct 40 are not enough for the combustion gas circulation of air storing duct 40.

Flow control valve 20 is to have a lining 21, these lining 21 endoporus are provided with one section screw thread and put a switch axle 22 for lock, its outer rim then is provided with above-mentioned air chamber 11 interior corresponding screw threads and supplies winding, this lining 21 also can wholely be placed in the air chamber 11, its terminal and be provided with an exhaust port 2101 can with venturi 1101 conductings, be provided with a through hole 2102 that corresponds to air-pressure chamber 12 in lining 21 lateral margins again, make the combustion gas in the air storing duct 40 can enter in the lining 21 thus; The main body of above-mentioned switch axle 22 is to be a roofbolt, the one rod end is formed with a jack-post 2201 supplying apparatus a knob 23, the end in addition of this switch axle 22 is to have extended a valve rod 2202, this valve rod 2202 is terminal and be taper and can stretch into shutoff exhaust port 2101, on the above-mentioned switch axle 22 and be provided with one section screw part 2203 to be flush-mounted in the lining 21, again, break away from for avoiding this switch axle 22 easily to produce with lining 21, and put lining lid 24 from 21 groups of linings again, this lining covers 24 ports that can be fixed at lining 21; Air-pressure chamber 12 is a screw in addition, its lateral margin is to be provided with an inlet hole 1202 to connect air storing duct 40, be provided with a modulating valve 50 in this air-pressure chamber 12, this modulating valve 50 mainly has a screwed pipe portion 5001 that is hollow, this screwed pipe portion 5001 is big together with air-pressure chamber 12, its lateral margin is provided with the gas port 5002 corresponding to inlet hole 1202, the center of screwed pipe portion 5001 then can for screw togather be provided with one catch the system valve rod 51, the system of catching valve rod 51 front ends that its outer rim is provided with thread section 5101 are to be taper portion 5102 and to be equipped with leak-proof gasket 52, and this taper portion 5102 of catching system valve rod 51 can stretch into to block the air outlet hole 1201 that is positioned at air-pressure chamber 12 bottoms; By the control valve that above-mentioned member is formed, it all respectively is arranged with choke packing ring 60 in lining 21 and switch axle 22, leaks to prevent the combustion gas in the control valve.

Please cooperate shown in Figure 4ly again, outgassing nozzle 30 1 ends of control valve are to connect airtight a delivery pipe 70, and the end in addition of this delivery pipe 70 is the combustion chamber that is connected stove and accessory, and the combustion gas in the air storing duct 40 enter the path of delivery pipe; Be earlier by the gas port 5002 of inlet hole 1202 through modulating valve 50, enter in the lining 21 by the air outlet hole 1201 of air-pressure chamber 12 bottoms and the through hole 2102 of lining 21 again, and the exhaust port 2101 of end is imported venturi 1101 backs again by outgassing nozzle 30 spirt delivery pipes 70 certainly, sends into combustion chamber and become fuel with air mixing; So when the combustion gas reserves in the air storing duct 40 more and when causing air pressure big, its unsettled flow can make air outlet hole 1201 space changes of taper portion 5102 and air-pressure chamber 12 by the adjustment of catching system valve rod 51, make the air pressure of combustion gas do suitable adjustment, obtain more stable gas flow, auxiliary switch axle 22 is sent in adjustment more stable accurate the control on the gas flow of delivery pipe 70.

By above-mentioned action as can be known, the design of modulating valve self-regualting type of the present utility model, except make gas flow more stable, also indirect guarantee the whole Security of using of stove and accessory, though, in gas flow control, provide suitable progressive really so structure of the present utility model is simple; Only, the above only is a preferred embodiment of the present utility model, when can not with the scope implemented of qualification the utility model, be that all equalizations of being done according to the technical solution of the utility model scope change and modify, all must belong in the scope that the technical solution of the utility model contains.

Claims

1, a kind of control valve that can adjust gas flow with the air pressure size, mainly be to be provided with a pedestal, provided an air chamber in this pedestal, this air chamber one end is provided with a nozzle, this nozzle is the delivery pipe that combustion chamber is led in winding one, one adjustable switch axle is to be plugged in the flow that enters delivery pipe in this air chamber for the control combustion gas, it is characterized in that: the pedestal top is provided with one and communicates in the air-pressure chamber of air chamber, be provided with a modulating valve in this air-pressure chamber, in this modulating valve and screwed togather one and catch the system valve rod, the system of the catching valve rod front end that its outer rim is provided with thread section is to be taper portion and to be equipped with leak-proof gasket, and this taper portion of catching the system valve rod can stretch into to block the air outlet hole that is positioned at the air-pressure chamber bottom.