CN2123513U

CN2123513U - Compound atomizing jet

Info

Publication number: CN2123513U
Application number: CN 92212647
Authority: CN
Inventors: 刘国清
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-04-16
Filing date: 1992-04-16
Publication date: 1992-12-02

Abstract

The utility model discloses a compound atomizing jet, mainly comprising a casing body, an air nozzle, a steam jet head, an oil jet head, an atomizing piece, a flow regulator, an oil pipe, a drive shaft, a pre-fastening spring, etc. The utility model is characterized in that the mechanical atomization, the high-speed steam atomization and the low-tension atomization are integrated into the compound atomizing jet, and a new-type tertiary atomizing jet is formed. Compared with the original single-type mechanical atomizing jet, the high-speed atomizing jet and the low-tension wind-atomizing jet, the compound atomizing jet has the superiority performance in the aspects of the using performance, the adapting oil material and the turndown ratio about the atomizing degree. The purposes that the pollution is prevented, the energy is saved, the operation is simple and the use cost is reduced can be attained.

Description

Compound atomizing jet

The utility model relates to a kind of compound atomizer, and it belongs to the combustion tool of industrial oil oven.

Atomizer burner commonly used in present existing industrial oil oven has chi shape low pressure oil nozzle, exterior mixing high pressure oil nozzle, mechanical atomizing oil nozzle etc.Though these a few class oil nozzles respectively have its advantage, use practice to show that also they respectively have certain shortcomings and deficiencies; Especially true when being fuel with heavy oil or residual oil.

As when using chi shape nozzle, stop up easily, when causing low discharge work atomizing bad, ignition difficulties during low temperature.

When using atomizing nozzle, because it mainly relies on change input pressure size to regulate oily flow.So fogging degree variation when the low discharge oil-feed.

When using the high pressure oil nozzle,, easily cause the use cost height, ignition difficulties because steam consumption is big.

The purpose of the present utility model provides a kind of compound atomizer, wishes that it can integrate the advantage of above-mentioned three kinds of existing nozzles, can overcome their weakness separately again; Have antifouling energy-conservationly, simple to operate, reduce the purpose of use cost.

This compound atomizer mainly is that mechanical atomizing, high velocity vapor atomizing and low-pressure air atomizing are combined, and forms three grades of atomizings of one and achieves the goal.

This atomizer that closes is made up of housing, tuyere, vapour shower nozzle, oil nozzle, atomizing piece, flow regulator, oil pipe, transmission shaft, preloading spring etc., be characterized in that an end and flow regulator that described transmission shaft has a center circle cone are spirally connected, the other end is being adorned preloading spring; Have on the eddy flow locular wall at flow regulator middle part on several and the atomizing piece the corresponding fuel feed hole of tangentially arranging of the spray orifice of opening; Oil pipe top is furnished with the flow groove that a control oilhole opens and closes, and external cylindrical surface is a face sealing in the middle part of this oil pipe upper end inner cylinder face and the flow regulator, and the flow regulator outer rim is a gear ring simultaneously, through this gear ring and atomizing piece engagement; Protrusion gear ring on the described flow regulator is put in the teeth groove of offering on oil spray inner plane, and can freely rotate middle; Be the thin-walled circular port that has several different apertures on the atomizing piece of cone shape, this cone major part is a gear, and the taper hole of being opened on its conical surface part and the oil nozzle inner plane contacts for the cone face; Have multi-thread rectangle rib-loop groove steam passage on the outer cylinder of described oil nozzle.

Its advantage of compound spraynozzle according to above conceptual design is:

1, usage condition is less demanding, and comformability is strong, and use cost is low.

Owing to adopt compound atomizing structure, passing through at present with (vapour pressure 2kg/cm under the condition ²More than, oil pressure 3kg/cm ²More than, more than the blast 4000Pa), according to actual conditions, in the time of only need having above two kinds of conditions, its atomization quality can be higher than with first three plants the effect that nozzle uses separately.Generally under high-temperature condition, the high steam atomization of power consumption can be do not adopted, use cost can be reduced.

Simultaneously, under China factory existence conditions, can not guarantee for a long time that steam pressure is at 3kg/cm ²More than, as long as this nozzle can utilize the short time steam atomization, reach rapid igniting; With turning off steam, do not influence burning.The oil pressure of factory's use at present is generally at 3～8kg/cm in addition ², be adapted to the service conditions of this nozzle especially.

2, the special little two flows burning that adapts to heavy oil, residual oil is difficult for obstruction, stability of flow, atomizing well.

Because this nozzle carries out mechanical atomizing from having utilized oil pressure fully, what carry out is again compound atomizing, and atomization quality is good when low discharge is worked; What spray orifice adopted in addition is the thin-walled circular hole of hydraulic radius maximum under identical flow area, so be difficult for stopping up, flow is very stable.

3, owing to adopt steam to add mechanical atomizing, burn the problem of reducibility flame difficulty when having solved the little fire of low pressure burner.

4, regulate than big

Because this nozzle adopts change nozzle hole area size to regulate flow, turning flow down by the loss oil pressure before having overcome influences atomization quality, regulates than little shortcoming; Changed the sort of burning big, had only, perhaps changed the shortcoming that jet size is realized by increase and decrease nozzle number to temperature regulating range in the stove.

Accompanying drawing 1 is the structural representation of compound atomizer;

Accompanying drawing 2 is compound atomizer A generalized section;

Accompanying drawing 3 is compound atomizer B generalized section.

Further describe compound atomizer below in conjunction with accompanying drawing, and provide embodiment.

Compound atomizer comprises housing (1), tuyere (2), vapour shower nozzle (3), oil nozzle (4), atomizing piece (5), flow regulator (6), oil pipe (11), transmission shaft (12), preloading spring (13), it is characterized in that an end and flow regulator (6) that described transmission shaft (12) has a center circle cone are spirally connected, the other end is being adorned preloading spring (13); Have on spin chamber (15) wall at flow regulator (6) middle part on several and the atomizing piece (5) the corresponding fuel feed hole of tangentially arranging of the spray orifice of opening; Oil pipe (11) top is furnished with the flow groove (14) that a control oilhole opens and closes, and this oil pipe (11) upper end inner cylinder face and flow regulator (6) middle part external cylindrical surface are face sealing, its upper end outward flange is a gear ring simultaneously, through this gear ring and atomizing piece (5) engagement; Protrusion gear ring on the described flow regulator (6) is horizontally-arranged in the teeth groove that oil nozzle (4) inner plane is offered, and can freely rotate middle; Be the thin-walled circular port that has several different apertures on the atomizing piece (5) of cone shape, this cone major part is a gear, and the taper hole of being opened on its conical surface part and oil nozzle (4) inner plane contacts for the cone face; It is logical to have multi-thread square thread groove vapour on the outer cylinder of described oil nozzle (4).Figure (7) is a swirler, and (8) are lock ball, and (9) are retainer spring, and (10) are steam pipe.

Entire work process is: pressure oil is by after the first order mechanical atomizing, and mist of oil continues to bump against with high velocity vapor and carries out the secondary atomizing, meets then and with low-pressure air and carries out three grades of atomizings.

A, when the mechanical atomizing state: the pressure oil that oil pipe (11) is sent at first through oil pipe end flow groove (14) enter opened on the flow regulator (6) to go up spray orifice corresponding with atomizing piece (5), the fuel feed hole of tangentially arranging reaches flow regulator in-to-in spin chamber (15) and produces high speed revolution, pairing spray orifice ejection from the atomizing piece at last, oil is ground into tiny elaioleucite under the drag effect of rotary centrifugal force and spout and combustion chamber gas medium.

Because what the flow regulating of this nozzle adopted is not the way that the reduction oil pressure reduces flow of passing through of mechanical nozzle employing, but by the different spray orifice of conversion, the flow area that changes spout reaches the purpose of regulating flow, thereby effectively utilizing oil pressure atomizes, so atomize during low discharge, in addition, the present invention adopts be under identical flow area, the circular through flow hole of thin-walled of hydraulic radius maximum, so be difficult for stopping up stability of flow.In the spin chamber, because spray orifice of every change all has a fuel feed hole oil-feed that is complementary, so just guaranteed the swirl strength of oil in the spin chamber simultaneously, atomization quality is good; Can be because of flowrate variation as oil-return type machinery nozzle, atomizing angle changes thereupon.

The fuel-flow control process of this nozzle is such: drive flow regulator (6) by transmission shaft (12) and rotate, because the gear ring at flow regulator top is worn moving atomizing piece (5) with the atomizing piece (5) with gear by gear mesh and is rotated, thus change atomizing piece (5) go up spray orifice and flow transfer the oil outlet of device (6) and oil nozzle (4) upward the relative position of oil outlet reach the purpose of conversion spray orifice.

B, when outside being in high pressure, mixing atomizing: this nozzle utilize the high speed revolution air-flow that sprays in the air flue between vapour shower nozzle (3) and the oil nozzle (4) to fuel oil impact with rubbing effect with oil atomization.Pure high pressure oil is chewed steam consumption height, noise height, use cost height; Because its flow regulating is also realized by regulating oil pressure, so when low discharge, mechanical atomizing is ineffective, separately by steam atomization, the excessive steam difficulty of catching fire during low discharge, the little atomizing variation of vapour amount, the difficulty of catching fire does not equally generally fit into other burning of low discharge level.This nozzle is good because of mechanical atomizing, provides good basis for carrying out steam atomization once more, has reduced the requirement to quantity of steam, makes it not put out a fire because of excessive steam.By compound atomizing, atomizing is adapted to the burning of low discharge rank.

C, be in chi shape low-pressure air when atomizing: three grades of atomizings of oil content, one time wind vertically mixes with mist of oil mutually through the aperture on the vapour shower nozzle (3), purpose one be atomize, the 2nd, guarantee certain root wind, prevent thermolysis and carbon deposit; Secondary air is introduced by tangential direction by swirler (7) and is the ejection of eddy flow shape, cause a stable centers recirculating zone, guarantee catching fire and flameholding of oil, tertiary air is chewed ejection between (2) from housing (1) and wind, the angle that it and mist of oil meet is big, around oil, spray into, thereby with oil atomization.During this nozzle low discharge, effectively utilized mechanical atomizing, for next step low-pressure air atomizing provides good basis, reduced the requirement to blast, the wind atomization quality was good separately in the past for secondary atomizing back mass ratio, had so just solved the problem that low temperature burns reducing flame.

Claims

1, a kind of compound atomizer comprises that housing (1), wind chews (2), vapour shower nozzle (3), oil nozzle (4), atomizing piece (5), flow regulator (6), oil pipe (11), transmission shaft (12), preloading spring (13), it is characterized in that an end and flow regulator (6) that described transmission shaft (12) has a center circle cone are spirally connected, the other end is being adorned preloading spring (13); Have on spin chamber (15) wall at flow regulator (6) middle part on several and the atomizing piece (5) the corresponding fuel feed hole of tangentially arranging of the spray orifice of opening; Oil pipe (11) top is furnished with the flow groove (14) that a control oilhole opens and closes, and this oil pipe (11) upper end inner cylinder face and flow regulator (6) middle part external cylindrical surface are face sealing, its upper end outward flange is a gear ring simultaneously, through this gear ring and atomizing piece (5) engagement; In the horizontally-arranged teeth groove of on oil nozzle (4) inner plane, offering of protrusion gear ring on the described flow regulator (6), and can freely rotate middle; Be the thin-walled circular port that has several different apertures on the atomizing piece (5) of cone shape, this cone major part is a gear, and the taper hole of being opened on its conical surface part and oil nozzle (4) inner plane is the contact seal of cone face; Institute's multi-thread square thread groove vapour that has is logical on the outer cylinder of described oil nozzle (4).