CN201031956Y

CN201031956Y - Long opening type two-pass flow control valve

Info

Publication number: CN201031956Y
Application number: CNU2007201534425U
Authority: CN
Inventors: 周翔; 韩敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-06
Filing date: 2007-06-06
Publication date: 2008-03-05
Anticipated expiration: 2017-06-06

Abstract

A normally open two-way flux control valve comprises an air inlet (2), an air outlet (5), a valve (2), a valve spool (6), a valve rod (11) and a valve bonnet (8); the inner end of the valve spool (6) represents as a cone which is matched with a concave tapered surface at the air channel inner port of the air inlet (1) to form a sealing surface; the outer end of the valve spool is connected with the valve rod (11) and the valve rod is equipped with a handle (10); the middle part of the valve spool (6) is equipped with external threads (7) and the valve bonnet (8) is combined with the valve (2) by threads; a sealing element (9) is arranged on the joint of the valve spool, the valve bonnet and the valve rod; the pointed part of the cone at the inner end of the valve spool (6) is equipped with a vertical hole (3), a cylinder behind the cone is equipped with a horizontal hole (4) and the two holes (3, 4) are communicated with each other. The utility model is installed in the pipe or the chamber of mixed gases; when gas and oxygen fluxes are separately needed to be adjusted in the procedures such as the welding-cutting procedure, energy-saving lamp exhaust procedure, etc. and the pile and the chamber are not convenient for closing, the traditional strong fire for a long time is converted into strong fire for a long time which can be adjusted according to the requirement; the utility model is characterized by convenient improvement, time-saving low-cost novel product development and obvious energy-saving effect.

Description

Long open type two-way flow rate modulating valve

Technical field

The utility model relates to the combination gas flow control valve after a kind of inflammable gas and the oxygen mix, particularly is in the long two-way flow rate modulating valve of opening gaseity.

Background technique

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 mobile 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 Compact Fluorescent 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 mixed gas 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 Compact Fluorescent Lamp industry ubiquity the phenomenon of low-price competition, and combustion gas but exists great waste, and still unmanned motive therebetween.The design people once designed three kinds and was respectively the cross-hole formula " combination gas flow control valve " that almost intersects vertically, " the combination gas flow control valve " and " energy-saving combination gas 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.Last is only to make a call to a through hole, not recessing, and above-mentioned three designs all need completely newly to make voluntarily, and it is slow to go out product, during fee to develop.

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 commercially available two general formula modulating valve simple in structure, available improved, go out that product is fast, exploitation saves time, operation is few, as required can be prosperous can be secretly and length fire, needn't regulate respectively the longer open type two-way flow rate modulating valve of combustion gas and oxygen flow.

The purpose of this utility model can realize by following measure: it includes suction port, air outlet, valve body, spool, valve rod, valve gap, spool the inner is cone, cooperate with the concave cone face of air flue internal orifice in the suction port and to form sealing surface, the spool outer end is connected with on valve rod, the valve rod handle is installed, the spool stage casing has outside thread, valve gap to combine with the valve body screw thread, there is Sealing spool, valve gap, valve body three's connecting part, the inner cone tip that it is characterized in that spool has vertical hole, have cross-drilled hole on the cylindrical body behind the cone, and two holes communicate.

The purpose of this utility model can also be come perfect by following measure: the diameter in said vertical hole is greater than the diameter of cross-drilled hole, and the collar extension of cross-drilled hole is enlarging.

Thereby the beneficial effects of the utility model to be simple in structure, available two commercially available general formula modulating valve improved exploitation is convenient, operation is few, work efficiency is high, fabricating cost is economized, both may command intensity of a fire size and long combustions, do not need to readjust again respectively the flow of combustible gas and oxygen again, change the long combustion of very hot oven and be dark prosperous adjustable long combustion as required, obvious energy conservation.

Description of drawings

Accompanying drawing is the utility model structural representation.

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.As acetylene gas, rock gas, inflammable gass such as coal gas become suitable ratio with oxygen mix after, in suction port 1 flow inlet port, again through the air outlet 5 to duration and degree of heating, igniting welding or seal, if the sealing surface of spool 6 separates, combination gas directly by suction port 1 to air flue again to the air outlet 5, gas maximum then, fire is the most prosperous, handle 10 is in spool 6 unscrews state, if will turn the intensity of a fire down, turning handle 10 tightens the spool trend, be close to sealing until concavo-convex two conical seal (contact) faces, combination gas can only be from suction port 1, to vertical hole 3, shelves hole 4, arrive air outlet 5 again, the flow minimum of combination gas at this moment, fire is the darkest, turn spool 6 when making two conical seal (contact) faces slightly separation be arranged, the intensity of a fire is medium.Handle is unscrewed spool 6 when needing very hot oven, needs dying fire to tighten valve 6, must regulate combustible gas and oxygen flow more again respectively, and is very quick.So turn handle, reach the purpose of the control combination gas flow and the intensity of a fire.The diameter in the vertical hole 3 that open spool 6 inner cone tips during making is greater than the diameter of cross-drilled hole 4.Cross-drilled hole 4 can not be opened on conical seal (contact) face and external thread section 7, can only open on shell portion, and two holes 3 and 4 communicate, and collar extension is enlarging.The aperture in vertical hole 3 is 0.5-2mm, and the aperture of cross-drilled hole 4 is 0.2-0.3mm.Handle 10 is knob style handle (accompanying drawing substitutes with the dial type handle for convenient).

Claims

1. one kind long open type two-way flow rate modulating valve, include suction port (1), air outlet (5), valve body (2), spool (6), valve rod (11), valve gap (8), spool (6) the inner is cone, cooperates the composition sealing surface with the concave cone face of air flue internal orifice in the suction port (1), spool (6) outer end is connected with valve rod (11), handle (10) is installed on the valve rod, there is outside thread (7) in spool (6) stage casing, valve gap (8) combines with valve body (2) screw thread, spool, valve gap, there is Sealing (9) valve rod three's connecting part, the inner cone tip that it is characterized in that spool (6) has vertical hole (3), have cross-drilled hole (4) on the cylindrical body behind the cone, and two holes (3,4) communicate.

2. long open type two-way flow rate modulating valve as claimed in claim 1 is characterized in that the diameter of the diameter in said vertical hole (3) greater than cross-drilled hole (4), and the collar extension of cross-drilled hole (4) is enlarging.