CN2216636Y - Compound spraying burner - Google Patents

Abstract

The utility model discloses a compound spraying burner, comprising a case body, an air sprayer, a steam sprayer, an oil sprayer, and an oil control needle. The nozzle of the steam sprayer is sheathed with a primary air sprayer. The primary air sprayer is composed of two cylindrical shells and two taper shaped case bodies. The bigger cylindrical shell is fixed on the outer diameter of the minimal end of the steam sprayer. The oil control needle comprises a taper shaped head, a rotational flow part, a throttling part, a driving part and a tail connected integrally. The head, the rotational flow part, the throttling part are arranged in the oil sprayer. The compound spraying burner is suitable for industrial oil stoves with large temperature changing, complex burning process and frequent ignitions such like forging stoves, heat-treatment furnaces, ceramic kiln, etc. The atomization property is good, the burning is perfect, and the maintenance is convenient.

Description

Compound atomization burner

The utility model relates to a kind of compound atomization burner, belongs to use fluid combustion device class.

Known R type burner advantage such as mixes though it has oil, gas, is easy to coking and blocking in an oil jet and wind mixing place; The size that RK type burner adopts the control spindle of needle valve to regulate distributive value, utilize oil pressure itself to carry out mechanical atomization, but when spraying little oil mass, high oil pressure, is easy to stop up, because oil-feed is big inside revolving the grease chamber because of the jet latus rectum is little, fuel-displaced little, the oil swirl strength reduces, and makes mist of oil grow and not revolve, and axial flow velocity is higher than wind speed, thereby the mixing of wind oil is bad, ignition difficulties; And known fuel-injection valve for high-pressure utilizes Alevaire to atomize, but when the little oil mass of spray, its jet is much larger than the fuel-economizing mouth of oil regulating valve, makes the oil pocket before the spout can not flowing full, and flow velocity is slow, the high speed Alevaire siphons away near the oil the spout very soon, and oil at a distance has little time to replenish and cause interruptible gas supply, and combustion instability, above-mentioned atomizer can not satisfy the little oil mass flameholding of a lot of industrial oil oven needs in the practice, noncoking is stopped up, and igniting waits requirement soon.In addition, said nozzle all has some specific service condition requirements, can not utilize fully that the various atomizings that can provide can atomize in the reality.

The purpose of this utility model provides a kind of adjusting than big, also can smooth combustion under the little oil mass situation, atomize, and burning is complete, the compound atomization burner that the various atomizings that can make full use of can provide in the reality can be carried out compound atomizing.

The utility model has the advantages that its atomization is good, the various atomizings that can provide in the reality can be provided carry out compound atomizing, regulate than big, adaptability is strong, requires service condition not high, and igniting easily, burning fully, easy to maintenance, be suitable for forge furnace, heat-treatment furnace, ceramic kiln equitemperature and change greatly, burning process complexity, the frequent industrial oil oven of igniting use.

The purpose of this utility model realizes by following manner; The utility model combines the strong point of R type, RK type burner and GW high pressure burner and is reformed and forms.

Embodiment of the present utility model is provided by institute's accompanying drawing, accompanying drawing is the structural representation of this compound atomization burner, below in conjunction with description of drawings the utility model, with reference to accompanying drawing, the utility model comprises: housing 1, air nozzle 2, (steaming) vapour shower nozzle 3, oil nozzle 5, trundle 6, piston ring 7, transfer steam casing 8, control spindle 9, oil pipe 10, housing seat 11, guider screw 12, air regulating sleeve 13, control stick 14, rotary axle box 15, bracket 16, valve seat 17, sealing ring 18, ratio adjusting rod 19, seal receptacle 20, proportions adjusting handle 21, turning cylinder 22, transfer oily handwheel 23, nut 24, spring 27, screw 28, collet 29.The utility model is that the surfaces externally and internally that two ends are not sealed is the housing of the surfaces of revolution at wind shower nozzle of the outside socket of the steam jet of vapour shower nozzle 4, a wind shower nozzle 4, and surfaces of revolution housing normally is linked to be by the two-section cylindrical housings is alternate with two cone shells.Larger-diameter cylindrical housings one end is fixed on the vapour shower nozzle 3, than the internal diameter of the circular cylindrical shell body portion of minor diameter external diameter greater than vapour shower nozzle 3 smallest end, have several fresh air inlets on the wall of great circle cylindricality housing parts, the surfaces of revolution axis of the axis of fresh air inlet and a wind shower nozzle 4 is non-intersect.Control spindle 9 comprises a conical head 9-1, eddy flow portion 9-2, restriction 9-3, but drive division 9-4 and afterbody 9-5, its afterbody links to each other with turning cylinder 22, head 9-1, eddy flow portion 9-2 and restriction 9-3, between the drive division 9-4 by linking into an integrated entity than the small cylinder transition and linking to each other with afterbody, eddy flow portion is that an outer surface has some spiral fluted cylinders, restriction is that an outer surface has small one and large one two helical form throttling channels, the width of two throttling channels and the degree of depth all become big cylinder back to front gradually, and drive division is the cylinder that has screw thread and two logical oil grooves on the outer surface; Head 9-1, eddy flow portion 9-2 and restriction 9-3 all are placed in the nozzle tip 5, and head 9-1, revolve oily portion 9-2, restriction 9-3 are not more than oil nozzle 5 to the total length of drive division 9-4 total length, air nozzle 2 is linked to be by one a section pipe and a taper shell, taper shell is linked to be by two tapering different pieces, and is less with the tapering of pipe connecting place.Seal receptacle 20, valve seat 17 are fixed together with oil pipe 10, oil nozzle 5, and link to each other with bracket 16 with the spiral shell mosquito, and its operation principle is as follows:

The oil content level Four is carried out compound atomizing when this burner is in R K type low-pressure air atomization burner duty, oil is eddy flow state ejection carrying out mechanical atomization under the effect of oil pressure, wind enters the space that wind shower nozzle and vapour shower nozzle 3 formed through the fresh air inlet of being opened on the wind shower nozzle 4 and produces eddy flow, being the eddy flow state then sprays and the oil phase mixed aerosol with the annular space spout that vapour shower nozzle 3 is constituted from a wind shower nozzle 4, because wind is with the ejection of the state of wind film, make oil jet can't form oil-collecting, and wind oil mixes, and a wind having avoided R and RK type burner to adopt inserts the defective of carrying out the easy oil-collecting coking of oil jet that mixed aerosol is caused in the mist of oil with point-like from hole all around; Secondary wind is introduced by tangential direction by the hole of being opened on the air nozzle 2, is ejection of eddy flow state and oil phase mixed aerosol; Tertiary air is from ejection between housing 1 and the air nozzle 2, and the angle that it and mist of oil meet is big, around oil, spray into, thereby with oil atomization.In this case in order effectively to utilize oil pressure to carry out mechanical atomization, the size of distributive value is by transferring oily handwheel, the area size that turning cylinder makes control spindle 9 advance and retreat change jet reaches: when the control spindle constantly moves forward, the area of the oil jet of oil nozzle diminishes, simultaneously, set restriction 9-3 on the control spindle, the flow area of throttling channel reduces, make the restriction 9-3 that enters by the control spindle, eddy flow portion 9-2, oily flow in the spin chamber that the inner cylinder of head 9-1 and oil nozzle 5 is formed tails off, and the space of spin chamber is diminished, advance the relative equivalent of oil inlet quantity of spin chamber like this with oil pump capacity, so that oil swirl strength do not weaken because of the size of distributive value, this just avoided R and RK type burner all along with the diminishing of distributive value, swirl strength dies down and makes the shortcoming of atomization quality variation.In addition, before not sealing jet one section of the size of control spindle certain apart from the time, all restrictions all have been closed and have stopped oil-feed on the control spindle, and when the little throttling channel on the control spindle just has been unlocked the oil spout of use low discharge, oil-feed flow area in the spin chamber is suitably less than the oil spout flow area, increased jet latus rectum (being hydraulic radius) like this, avoided RK type burner when the little oil mass of spray, because of the stifled shortcoming of latus rectum Xiao Yi, it is very little to control the trifle chute spiral lifting angle of being opened on the restriction 9-3 of spindle in addition, when the little oil mass of spray, big joint groove is closed and only makes little throttling channel carry out throttling, and the swirl strength when having strengthened low discharge has avoided RK type burner like this when the little oil mass of spray, swirl strength is low, axially oil spout speed height makes the mixing of wind oil bad, the shortcoming of ignition difficulties, when this burner is in GW high pressure nozzle duty, utilize the high speed swirling eddy that sprays in the steam passage between vapour shower nozzle and the oil nozzle to oil impact with rubbing action with oil atomization.From as can be known above-mentioned, because the distance from the restriction to the jet is very short, the space, spin chamber is little, and the spray volume of spin chamber equates substantially with oil inlet quantity, so when utilizing high pressure nozzle to carry out work, can not produce interrupted fuel injection event, overcome the shortcoming of GW high pressure nozzle in the interrupted oil spout of low discharge.

Find that on the length basis of summing up R and RK type burner there is a common shortcoming in they, when promptly using the burning of maximum spout oil mass, occur in afterbody often if producing smolders, is the taper design of air nozzle 2 small one and large one two-stage tapering difference, make the axial flow velocity of the wind that air nozzle sprays that air nozzle and housing head formed big like this, spray is apart from far away, so solved because of the not enough shortcoming of smoldering of tail air.

This burner all is fixed together oil nozzle 5, oil pipe 10, seal receptacle 20 with valve seat 17, the screw thread of valve seat is fixed on the bracket 16, make its maintenance platoon remove faults such as nozzle internal oil channel, steam passage obstruction, very convenient, shortened the repair time, only need turn during maintenance that a screw can take out oil nozzle and steam passage deslagging in the nozzle.

Also be provided with wind gas oil ratio example governor motion on this burner, be set with a cylindrical proportional valve spool 26 outside the turning cylinder 22, have throttling channel on the proportional valve spool, proportional valve spool is by dog screw 25 and ratio adjusting handle 21, ratio adjusting rod 19 connects, the front fork that moves forward to modelling bar when the ratio handwheel with handle fourth and be connected after, after adjusting air oil proportional according to on-the-spot service condition, the screwed in place screw, can carry out ratio and regulate, carry out to adjust oily handwheel 23 when ratio is regulated and make oil atomization reach optimum efficiency.

Claims (4)

1, a kind of compound atomization burner, comprise housing (1), air nozzle (2), vapour shower nozzle (3), oil nozzle (5), trundle ⑹, piston ring (7) is transferred steam casing (8), control spindle (9), oil pipe (10), housing seat (11), guider screw (12), air regulating sleeve (13), control stick (14), rotary axle box (15), bracket (16), valve seat (17), sealing ring (18), ratio adjusting rod (19), seal receptacle (20), ratio adjusting handle (21), turning cylinder (22), transfer oily handwheel (23), nut (24), dog screw (25), proportional valve spool (26), spring (27), collet (29) is characterized in that the outside wind shower nozzle of socket (4) of steam jet of described vapour shower nozzle (3), a described wind shower nozzle (4) is that two ends are not sealed, surfaces externally and internally is the housing of the surfaces of revolution, surfaces of revolution housing is linked to be by the two-section cylindrical housings is alternate with two conical shells usually, and cylindrical housings one end of big external diameter is fixed on the vapour shower nozzle (3), than the internal diameter of the cylindrical housings of the minor diameter external diameter greater than vapour shower nozzle (3) smallest end, have several fresh air inlets on the larger-diameter cylindrical housings, the surfaces of revolution axis of the axis of fresh air inlet and a wind shower nozzle is non-intersect; Described control spindle (9) comprises a conical head (9-1), eddy flow portion (9-2), restriction (9-3), drive division (9-4) and afterbody (9-5), link into an integrated entity by less cylinder transition between head, eddy flow portion, restriction and the drive division, and link to each other with afterbody; Eddy flow portion is that an outer surface has some spiral fluted cylinders, restriction is that the width and the degree of depth that an outer surface has small one and large one two helical form throttling channels, two throttling channels all becomes big cylinder back to front gradually, and drive division is the cylinder that has screw thread and two logical oil grooves on the outer surface; Head, eddy flow portion and restriction all are placed in the oil nozzle (5), and the total length of head, eddy flow portion, restriction and drive division is not more than the total length of oil nozzle (5).

2, compound atomization burner according to claim 1 is characterized in that described air nozzle (2) is linked to be by one a section pipe and a taper shell, and taper shell is linked to be by two tapering different pieces, and is less with the tapering of pipe connecting place.

3, compound atomization burner according to claim 1 is characterized in that described oil nozzle (5), oil pipe (10), seal receptacle (20), is fixed together with valve seat (17), and valve seat links to each other with bracket (16) with screw thread.

4, compound atomization burner according to claim 1 is characterized in that being set with a cylindrical proportional valve spool (26) outside the described turning cylinder (22), has the fuel-economizing groove on the proportional valve spool; Proportional valve spool is connected with ratio adjusting handle (21), ratio adjusting rod (19) by dog screw (25).

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