CN201037646Y - Mixed gas flow control valve - Google Patents

Abstract

A combined gas flow capacity control valve comprises an inlet branch (1), an escape pipe (9), a valve body (2), a valve core (3), a valve handle (4) and a valve cover (8), wherein, in the valve core, the position which is in the same plane as the centers of the inlet branch and the escape pipe (3) is provided with a pylome (10) and a hole slash (11) of the pylome (10), the free-end of the valve handle (4) is connected with a handle (6), the valve cover (8) is provided with a stop element (5), and gland bushes (7) are respectively arranged between the valve cover (8) and the valve handle (4) as well as between the valve cover (8) and the valve body (2). The control valve is arranged in the combined gas pipe or chamber inconvenient to be closed when the welding and cutting procedure of blowpipe and the exhaust and sealing procedure of energy-saving lamp are conducted, and all of the procedures are needed respectively to adjust the gas flow capacity and the oxygen flow capacity. With the advantages of simple structure, low production cost and distinct energy-saving effect, the utility model can change the long time of burning high fire into the adjustable long time of burning high or low fire according to needs.

Description

The air mixture flow control valve

Technical field

The utility model relates to the air mixture flow control valve after a kind of fuel gas and the oxygen mix.

Background technology

Welding torch, cutting torch are when using, need acetylene gas and oxygen are adjusted to suitable flow respectively, the use when size of flame is met the requirements is during use, if the shift position of operator own, or workpiece moves the position, or operator and other people exchange views temporarily uniformly-spaced that property delays, and often can not close and knock down the flame, let alone burning, because, light once more and need regulate respectively acetylene and oxygen again, feel time-consuming and trouble in case put out.The acetylene gas of so lighting in vain in 1 year is surprising.

The situation of waste combustion gas also is like this in the deairing step of electricity-saving lamp, is earlier coal gas (natural gas) and oxygen to be adjusted to desired flow respectively equally, and flame size is suitable, again to glass lamp dress tungsten filament, vacuumize, glass-tube seals.In this operation, the dress tungsten filament accounts for 80% with time of vacuumizing, and the time of sealing accounts for 20%, that is to say that the effective rate of utilization of the gaseous mixture after coal gas (natural gas) and the oxygen mix only has an appointment 20%, and all the other times are regulated to mistake because of need and let alone combustion.At present, domestic electricity-saving lamp industry ubiquity the phenomenon of low-price competition, combustion gas but exists great waste, still unmanned diligently therebetween. the design people once designed two kinds and was respectively the cross-hole formula " air mixture flow control valve " that almost intersects vertically and " the energy-saving air mixture flow control valve " of monotrysian type, and in SEPARATE APPLICATION recently patent, the former need bore two holes, and need almost intersect vertically at grade, operation is many, the precision height; The latter be after the reaming in a side or two recessings of reaming, this groove from deep to shallow, by wide to narrow, machinery can't be processed, and needs manual operations, influences work efficiency.

Summary of the invention

The purpose of this utility model be at the time of worry regulating in the mixture combustion of some production fields too much and the loss that the long combustion of very hot oven causes, provide a kind of simple in structure, operation is few, work efficiency is high, cost is low, as required can be prosperous can be secretly, needn't regulate the air mixture flow control valve of combustion gas and oxygen flow more respectively.

The purpose of this utility model can realize by following measure: this energy-saving air mixture flow control valve, include air inlet pipe, escape pipe, valve body, spool, valve rod, valve gap, in spool, be in place, same plane and have a through hole that penetrates spool with air inlet pipe, escape pipe central part, and the reaming at these two ends, hole, the valve rod free-end is connected with handle, handle stop bit spare is arranged on the valve gap, between valve gap and the valve rod and between valve gap and the valve body sealing gasket is arranged.

The purpose of this utility model can also be come perfect by following measure: the internal diameter of valve body is than the big 0.02-0.03mm of external diameter of spool.Or have on the spool at least three spool grooves and with the spool ring of its coupling.Said stop bit spare is pillar stop bit post or baffle-type position-stopping plate.

The beneficial effects of the utility model be simple in structure, operation is few, work efficiency is high, cost of manufacture is economized, and both can control intensity of a fire size, does not need to readjust respectively the flow of combustible gas and oxygen again again, change the long combustion of very hot oven and fire obvious energy conservation for dark prosperous adjustable length as required.

Description of drawings

Accompanying drawing is the utility model structural representation.

The specific embodiment

The utility model is described in further detail below in conjunction with embodiment and with reference to accompanying drawing: this control valve is fit to be installed in mixed mixed combustible gas pipe, air chamber.After becoming suitable ratio with oxygen mix as fuel gas such as acetylene gas, natural gas, coal gas, flow in the through hole 10 by air inlet pipe 1, arrive duration and degree of heating through escape pipe 9 again, igniting welding or seal, if through hole 10 is accurate air inlet pipe 1 and escape pipes 9 of facing toward, then gas maximum, fire are the most prosperous, and handle 6 is also just in time touched pillar stop bit post 5.If will turn the intensity of a fire down, turn handle 6 counter-rotatings, the through hole 10 of former aligning tracheae 1,9 is left gradually, when not breaking away from fully as yet, the edge of only remaining reaming 11 and tracheae 1,9 slightly by the time, the flow minimum of air mixture, fire are the darkest, handle 6 is also just in time touched on another pillar stop bit post 5.Handle is between two stop bit posts the time, and the intensity of a fire is medium.Handle is screwed to a side stop bit post place when needing very hot oven, needs dying fire to be screwed to opposite side stop bit post place, needn't regulate combustible gas and oxygen flow more again respectively, and is very quick.So turn handle, reach the purpose of the control air mixture flow and the intensity of a fire.For reducing the dispersion of air-flow, the gap of spool 3 outer walls and valve body 2 inwalls is little during making, to disperse gas less and to rotate conveniently is principle, the very little meeting in gap is given processing, is installed and add to the difficulties, and therefore, also can suitably enlarge the gap, the mode of using instead so that spool (piston) ring 12 to be installed solves, then spool groove, ring are installed in the upper and lower part in hole 10 respectively, near the valve gap place being installed by two pairs of grooves and ring at least, adorn at least one pair of groove, ring 12 by the valve bottom.Handle 6 also can be used knob instead, and stop bit spare 5 can be the baffle-type position-stopping plate.

Claims (4)

1. air mixture flow control valve, include air inlet pipe (1), escape pipe (9), valve body (2), spool (3), valve rod (4), valve gap (8), it is characterized in that being in place, same plane with air inlet pipe, escape pipe central part in spool (3) has a hole (10) that penetrates spool, and the reaming (11) at this through hole (10) two ends, valve rod (4) free-end is connected with handle (6), stop bit spare (5) is arranged on the valve gap (8), between valve gap (8) and the valve rod (4) and between valve gap (8) and the valve body (2) sealing gasket (7) is arranged.

2. energy-saving air mixture flow control valve as claimed in claim 1 is characterized in that the external diameter big 0.02-0.03mm of the internal diameter of valve body (2) than spool (3).

3. energy-saving air mixture flow control valve as claimed in claim 1 is characterized in that having the spool groove to reach on the spool (3) and the spool ring (12) of its coupling.

4. energy-saving air mixture flow control valve as claimed in claim 1 is characterized in that said stop bit spare (5) is pillar stop bit post or baffle-type position-stopping plate.

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