CN101929802B - Side-blown spray gun - Google Patents
Side-blown spray gun Download PDFInfo
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- CN101929802B CN101929802B CN200910087963A CN200910087963A CN101929802B CN 101929802 B CN101929802 B CN 101929802B CN 200910087963 A CN200910087963 A CN 200910087963A CN 200910087963 A CN200910087963 A CN 200910087963A CN 101929802 B CN101929802 B CN 101929802B
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Abstract
The invention discloses a side-blown spray gun which comprises a central tube, a central sleeve sleeved on the central tube, a middle tube and an outer sleeve sleeved outside the middle tube, wherein the outer diameter of the rear part of the central tube is larger than the outer diameter of the front part thereof, and a sleeve groove is formed on the outer wall of the rear part thereof; a combustion-supporting gas chamber is arranged between the front part of the central sleeve and the middle tube, the rear part of the central sleeve is matched with the middle tube so that a combustion-supporting gas injection channel is formed by the restriction of the inner wall of the central tube and the sleeve groove, the outer diameter of the rear part of the middle tube is larger than the outer diameter of the front part thereof, and a middle tube groove can be formed on the outer wall of the rear part thereof; and a cooling medium chamber is formed between the front part of the middle tube and the outer sleeve, and the rear part of the middle tube is matched with the outer sleeve so that a cooling medium injection channel is formed by the restriction of the inner wall of the outer sleeve and the middle tube groove. The side-blown spray gun has the advantages of low production and maintenance cost and good spray effect.
Description
Technical field
The present invention relates to a kind of side-blown spray gun, especially relate to a kind of side-blown spray gun that is used for metallurgical furnace.
Background technology
Along with the development of metallurgical industry, and the requirement of environmental protection and energy-conservation aspect, development in recent years has gone out multiple metallurgical technology.In the nonferrous metallurgy field, the melting technique that side-blown or side-blown combine with top blast has obtained using widely, and the side-blown rifle has become the used visual plant of side-blown melting.For example, in refining phosphorus by hot method, side-blown spray gun sprays into oxygen, coal dust or heavy oil in smelting furnace, and a part of coal dust or heavy oil and oxygen reaction produce melting institute calorific requirement, and another part is as reducing agent.
The applicant discloses a kind of spray gun of side-blown converter for smelting non-ferrous metal at first to file CN101382387A; Wherein the combustion-supporting gas ejiction opening of lance head has through hole spout array, and above-mentioned spout array is to form through on the outer wall of central tube, processing longitudinal fluting.The problem that above-mentioned spray gun exists is: the centre bore of central tube is used for burner oil; Therefore the wearing and tearing of the central tube processed of stainless steel are very serious, and the life-span is short, therefore changes through needing after one section use; But because the spout array is formed on the outer wall of central tube; Each central tube all must process groove, so processing difficulties, and cost is high.
The applicant discloses a kind of oxygen bottom-blowing stove oxygen gun apparatus at first to file CN200974858Y; There are the problems referred to above equally in this oxygen gun apparatus; And the air channel of outside of sleeve setting forms on the length of whole sleeve pipe vertically, causes processing difficulties, and cost increases.
Summary of the invention
The present invention is intended to solve at least one of technical problem that exists in the prior art.For this reason, one object of the present invention is to propose a kind of processing cost and the low side-blown spray gun of maintenance cost.
Side-blown spray gun according to the present invention comprises: central tube; Center sleeve, said center sleeve are enclosed within central tube outside, and wherein the external diameter at the rear portion of center sleeve is greater than its anterior external diameter, and on the outer wall at rear portion, is formed with sleeve grooves; Intervalve; Said intervalve is enclosed within the center sleeve outside; Form the combustion-supporting gas chamber between the front portion of wherein said center sleeve and the intervalve; Thereby said center sleeve rear portion cooperates the inwall of said intervalve and sleeve grooves to limit the combustion-supporting gas injection channel with intervalve, and the external diameter at the rear portion of intervalve is greater than its anterior external diameter, and on the outer wall at rear portion, is formed with the intervalve groove; And outer layer sleeve; Said outer layer sleeve is enclosed within the intervalve outside; Wherein form cooling medium chamber between the front portion of intervalve and the outer layer sleeve, thereby and the rear portion of intervalve cooperate the inwall of said outer layer sleeve and intervalve groove to limit the cooling medium injection channel with outer layer sleeve.
According to side-blown spray gun of the present invention, owing to be with center sleeve in the outside of central tube, the centre bore of central tube is as the fuel channel of burner oil such as coal dust or heavy oil.When central tube weares and teares, extract central tube out more renew central tube from center sleeve.Therefore; Need not to process the groove that constitutes the combustion-supporting gas injection channel on the central tube, but on the outer wall at the rear portion of center sleeve, form sleeve grooves, the processing of central tube is simple; Because the wearing and tearing of center sleeve are little; Life-span is long relatively, and center sleeve can be reused with respect to the central tube of wearing and tearing, has reduced the manufacturing and the maintenance cost of side-blown spray gun thus.
In addition, also have following additional technical feature according to side-blown spray gun of the present invention:
Side-blown spray gun according to the present invention further comprises: the cooling medium joint, and said cooling medium joint is formed with the cooling medium access road that is communicated with cooling medium chamber; The combustion-supporting gas joint, said combustion-supporting gas joint links to each other with the cooling medium joint and is formed with the combustion-supporting gas access road that is communicated with the combustion-supporting gas chamber; With the fuel joint, said fuel joint links to each other with the combustion-supporting gas joint and is formed with the fuel inlet channel that is communicated with the centre bore of central tube.
Through the cooling medium joint is set; Combustion-supporting gas joint and fuel joint; And in each joint, form the access road that is communicated with respective channel, be ejected in smelting furnace such as the refining phosphorus by hot method reduction oxidation furnace thereby can easily cooling medium, combustion-supporting gas and fuel be supplied to side-blown spray gun from cooling medium source, combustion-supporting gas source and fuels sources.
Said cooling medium access road comprises the first cooling medium access road of supplying with nitrogen or air and the second cooling medium access road of supplying with cooling water.
Through in the cooling medium joint, being provided for supplying the access road of different cooling mediums; Can select for use cooling medium that side-blown spray gun is cooled off easily; For example an access road can be used to supply with gaseous cooling medium, and like nitrogen or air, another access road can be used to supply with liquid cooling medium; Like water, thereby increase cooling effect.
Further comprise the cooling medium shower nozzle according to side-blown spray gun of the present invention; Said cooling medium shower nozzle is installed in the cooling medium joint and with the cooling medium joint and limits the cooling medium mixing chamber, and the wherein said first and second cooling medium access roades are communicated with cooling medium chamber through the cooling medium mixing chamber.
Through the cooling medium shower nozzle is set; Cooling medium shower nozzle and cooling medium joint limit a cooling medium mixing chamber; The cooling medium mixing chamber can increase cooling effect with the cooling medium of gaseous state with to supply to cooling medium after liquid cooling medium fully mixes indoor.
Said fuel joint comprises: the fuel base, and said fuel base links to each other with the combustion-supporting gas joint and has conical central hole; Fuel inlet is taken over, and the centre bore that the end that said fuel inlet is taken over links to each other with the fuel base and fuel inlet is taken over is communicated with the conical central hole of fuel base; Be connected the fuel inlet pipe on the sidewall that fuel inlet takes over; And the eye of wind, the said eye of wind is installed in the other end of fuel inlet adapter optionally to seal and to open the other end that fuel inlet is taken over.
Through in the fuel base, conical central hole being set; And utilize wind with fuel for example the coal dust accelerating jetting in fuel channel; Utilize the eye of wind conveniently under the situation that fuel inlet is taken over or the fuel base stops up, to dredge, and under situation about need not dredge, fuel inlet is taken over sealing.
Said sleeve grooves and intervalve groove are many.Said sleeve grooves and said intervalve groove are spiral groove or are the axial straight flute that is parallel to center sleeve.The ejiction opening of said combustion-supporting gas injection channel and cooling medium injection channel circumferentially evenly distributes in the rear end face upper edge of center sleeve and intervalve respectively.
Through forming many sleeve grooves and intervalve groove, and evenly distribute, can cooling medium and combustion-supporting gas be ejected in the smelting furnace equably, obtain better melting effect in the rear end of side-blown spray gun.
The cross section of said sleeve grooves and intervalve groove is rectangle or triangle.
Said central tube is the abrasion resistant cast steel pipe, and said center sleeve, intervalve and outer layer sleeve are stainless steel tube.Through with the effective central tube of doing of abrasion resistant cast steel, not only increased the life-span of central tube, and reduced cost with respect to stainless steel tube.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage obviously with are easily understood becoming the description of embodiment from combining figs, wherein:
Fig. 1 is the vertical cross-sectional schematic according to the side-blown spray gun of the embodiment of the invention;
Fig. 2 is the profile along the A-A among Fig. 1;
Fig. 3 is the profile along the B-B among Fig. 1.
The specific embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention; The orientation of indication such as term " preceding ", " back " or position relation are for concerning based on orientation shown in the drawings or position; Only be for the ease of describing the present invention rather than requiring the present invention therefore can not be interpreted as limitation of the present invention with specific azimuth configuration and operation.For example, in Fig. 1, the left side is as the front portion, and the right side is as the rear portion.
Following with reference to the side-blown spray gun of figure 1-3 description according to the embodiment of the invention; Be used for the refining phosphorus by hot method reduction oxidation furnace with side-blown spray gun below; And fuel is that coal dust (wherein utilizing wind to send), combustion-supporting gas are that oxygen, cooling medium are nitrogen (or air) and/or water; For example is described, but this only is to describe the present invention for ease, and can not be interpreted as limitation of the present invention.
Shown in Fig. 1-3, comprise central tube 4, center sleeve 3, intervalve 2, outer layer sleeve 1 according to the side-blown spray gun of the embodiment of the invention.Thereby the nested successively forming sleeves structure of above-mentioned four pipes.
The centre bore of central tube 4 constitutes fuel injection passages, is used for through wind coal dust being ejected in the refining phosphorus by hot method reduction oxidation furnace.
In a concrete example, as shown in Figure 3, sleeve grooves 7 is many, and forms the axial straight flute that is parallel to center sleeve 3.Certainly, sleeve grooves 7 also can be spiral helicine groove.
More even for the injection that makes combustion-supporting gas, improve the melting effect, sleeve grooves 7 goes up evenly at the rear end face (being about to be inserted into the end face in the reduction oxidation furnace) of center sleeve 3 and distributes, and is as shown in Figure 3.In further example, the cross section of sleeve grooves 7 is a rectangle, to increase projected area, still also can be triangle.
Here, term " front portion " and " rear portion " are the convenience in order to describe, and wherein to be inserted into the side in the refining phosphorus by hot method reduction oxidation furnace be the rear portion to side-blown spray gun, and a relative side be the front portion.For example, for center sleeve 3, the length of front and rear, promptly be formed with sleeve grooves 7 part length and do not form the length of the part of sleeve grooves 7, can confirm as required and divide.In other words, the length of sleeve grooves 7 can be confirmed according to concrete application.
Similar with center sleeve 3, the external diameter at the rear portion of intervalve 2 is also greater than its anterior external diameter, and on the outer wall at rear portion, is formed with the intervalve groove 6 that runs through the rear portion vertically.In a concrete example, as shown in Figure 3, intervalve groove 6 is many, and forms the axial straight flute that is parallel to intervalve 2, and certainly, intervalve groove 6 also can be spiral helicine groove.
More even in order to make that the mixture that helps nitrogen and water sprays, improve the melting effect, intervalve groove 6 evenly distributes on the rear end face of intervalve 2, and is as shown in Figure 3.In further example, the cross section of intervalve groove 6 is a rectangle, to increase projected area, still also can be triangle.
According to side-blown spray gun of the present invention, central tube 4 is used to spray coal dust, and therefore wearing and tearing are serious than other pipes; Life-span is short; Replacement cycle is short, but owing to be provided with center sleeve 3 in central tube 4 outsides, and the sleeve grooves 7 of spraying combustion-supporting gas is formed on the outer wall at rear portion of intermediate casing 3; Therefore need not on each central tube 4 of changing, to form the groove that sprays combustion-supporting gas; Reduced the processing cost of central tube 4, center sleeve 3 can be reused for central tube 4, thereby has reduced the manufacturing cost and the maintenance cost of whole side-blown spray gun.
In an example of the present invention, central tube 4 is the abrasion resistant cast steel pipe, and center sleeve 3, intervalve 2 and outer layer sleeve 4 are stainless steel tube.Because central tube 4 be the abrasion resistant cast steel pipe, so the life-span is long, and compares with the central tube of processing with stainless steel, and cost reduction, manufacturing are convenient, thus the life-span of side-blown spray gun can further prolong, cost can further reduce.
The side-blown spray gun of further embodiment further comprises cooling medium joint 14, combustion-supporting gas joint 16, fuel joint 10 according to the present invention.
As shown in Figure 1, cooling medium joint 14 is formed with the cooling medium access road that is communicated with cooling medium chamber 8.In one example, the cooling medium access road comprises the first cooling medium access road 11 and the second cooling medium access road 12 that is formed by the cooling medium inlet tube.The first cooling medium access road 11 is adjacent with nitrogen or air source (not shown); Be used to supply with nitrogen or air; The second cooling medium access road 12 links to each other with the water source (not shown), is used to supply with cooling water, thereby can further improve the cooling effect to side-blown spray gun.As shown in Figure 1; In further example; Side-blown spray gun also comprises cooling medium shower nozzle 15; Cooling medium shower nozzle 15 is installed in the cooling medium joint 14 and with cooling medium joint 14 and limits cooling medium mixing chamber M, and the first and second cooling medium access roades 11,12 are communicated with cooling medium chamber 8 through cooling medium mixing chamber M.The nitrogen G&W can mix the back and get in the cooling medium chamber 8 in cooling medium mixing chamber M; The cooling medium injection channel that limits of inwall through intervalve groove 6 and outer side sleeve 1 is ejected in the reduction oxidation furnace again; Thereby improved the uniformity of cooling effect and injection, improved the melting effect thus.
Combustion-supporting gas joint 16 links to each other with cooling medium joint 14, and is as shown in Figure 1, also is provided with sealing gasket between them, to increase sealing property.Combustion-supporting gas joint 16 is formed with the combustion-supporting gas access road 13 that is communicated with combustion-supporting gas chamber 9, and more specifically, combustion-supporting gas access road 13 is made up of the combustion-supporting gas inlet tube.
As shown in Figure 1, fuel joint 10 links to each other with combustion-supporting gas joint 16 and is formed with the fuel inlet channel that is communicated with the centre bore of central tube 4.In one embodiment, fuel joint 10 comprises fuel base 18, fuel inlet adapter 19, fuel inlet pipe 20 and the eye of wind 21.
Fuel base 18 links to each other with combustion-supporting gas joint 16, and between them, is provided with sealing gasket to increase sealing property.Fuel base 18 has conical central hole, and this conical central hole is communicated with the centre bore of central tube 4, and conical central hole reduces towards the direction diameter of central tube 4 gradually, thereby when coal dust being sent in the central tube 4, can play acceleration to sealing.
One end of fuel inlet adapter 19 links to each other with fuel base 18 and the centre bore of fuel inlet adapter 19 is communicated with the conical central hole of fuel base 18.Fuel inlet pipe 20 is connected on the sidewall of fuel inlet adapter 19, is used for that coal dust is delivered to fuel inlet and takes in 19.
The eye of wind 21 is installed in the other end of fuel inlet adapter 19 and takes over 19 the other end optionally to utilize ball 22 to open and seal fuel inlet.When fuel inlet takes over 19 or fuel base 18 when being stopped up by coal dust; Can be through ball 22 be moved up in (shown in dotted line among Fig. 1), thus the instrument mediation can be utilized, in the time need not dredging; Can ball 22 be moved down, thereby the sealing fuel inlet is taken over 19 the other end.
Below with reference to the figure 1 simple operation of describing according to the side-blown spray gun of the embodiment of the invention.
With wind with coal dust through fuel inlet pipe 20, fuel inlet take over 19 and fuel base 18 drums deliver in the central tube 4, spray in the refining phosphorus by hot method reduction oxidation furnace from the rear end of central tube 4.Simultaneously oxygen is sent in the combustion-supporting gas chamber 9 through fuel inlet channel 13; Be ejected in the refining phosphorus by hot method reduction oxidation furnace from the rear end through combustion-supporting gas injection channel (being center sleeve groove 7) then; An oxygen part that sprays into provides melting required heat with the coal dust reaction, and another part is as reducing agent.And; Nitrogen or air supply in the cooling medium chamber M from the first cooling medium access road 11; Water supplies in the cooling medium M from the second cooling medium access road 12; Nitrogen mixes the back with water and gets in the cooling medium chamber 8 in cooling medium chamber M, supply with cooling medium injection channel (being intervalve groove 6) then and be ejected in the refining phosphorus by hot method reduction oxidation furnace from the rear end, cools off side-blown spray gun thus.
After central tube 4 wearing and tearing of the easy abrasion of feed coal dust, central tube 4 is extracted out new central tube 4 in the replacing in center sleeve 3; Other elements can be reused, and need not to process the groove as injection of oxygen thus on the central tube 4, and processing is simple; Cost is low, and maintenance cost reduces.In order further to improve the wearability of central tube 4, can process central tube 4 with the abrasion resistant cast steel pipe, replacing traditional stainless steel central tube, and cost reduces.
Although illustrated and described embodiments of the invention; Those having ordinary skill in the art will appreciate that: under the situation that does not break away from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited claim and equivalent thereof.
Claims (10)
1. a side-blown spray gun is characterized in that, comprising:
Central tube;
Center sleeve, said center sleeve are enclosed within central tube outside, and wherein the external diameter at the rear portion of center sleeve is greater than its anterior external diameter, and on the outer wall at rear portion, is formed with sleeve grooves;
Intervalve; Said intervalve is enclosed within the center sleeve outside; Form the combustion-supporting gas chamber between the front portion of wherein said center sleeve and the intervalve; Thereby the rear portion of said center sleeve cooperates the inwall of said intervalve and sleeve grooves to limit the combustion-supporting gas injection channel with intervalve, and the external diameter at the rear portion of intervalve is greater than its anterior external diameter, and on the outer wall at rear portion, is formed with the intervalve groove; With
Outer layer sleeve; Said outer layer sleeve is enclosed within the intervalve outside; Wherein form cooling medium chamber between the front portion of intervalve and the outer layer sleeve, thereby and the rear portion of intervalve cooperate the inwall of said outer layer sleeve and intervalve groove to limit the cooling medium injection channel with outer layer sleeve.
2. side-blown spray gun according to claim 1 is characterized in that, further comprises:
The cooling medium joint, said cooling medium joint is formed with the cooling medium access road that is communicated with cooling medium chamber;
The combustion-supporting gas joint, said combustion-supporting gas joint links to each other with the cooling medium joint and is formed with the combustion-supporting gas access road that is communicated with the combustion-supporting gas chamber; With
The fuel joint, said fuel joint links to each other with the combustion-supporting gas joint and is formed with the fuel inlet channel that is communicated with the centre bore of central tube.
3. side-blown spray gun according to claim 2 is characterized in that, said cooling medium access road comprises the first cooling medium access road of supplying with nitrogen or air and the second cooling medium access road of supplying with cooling water.
4. side-blown spray gun according to claim 3; It is characterized in that; Further comprise the cooling medium shower nozzle; Said cooling medium shower nozzle is installed in the cooling medium joint and with the cooling medium joint and limits the cooling medium mixing chamber, and the wherein said first and second cooling medium access roades are communicated with cooling medium chamber through the cooling medium mixing chamber.
5. side-blown spray gun according to claim 2 is characterized in that, said fuel joint comprises:
The fuel base, said fuel base links to each other with the combustion-supporting gas joint and has conical central hole;
Fuel inlet is taken over, and the centre bore that the end that said fuel inlet is taken over links to each other with the fuel base and fuel inlet is taken over is communicated with the conical central hole of fuel base;
Be connected the fuel inlet pipe on the sidewall that fuel inlet takes over; With
The eye of wind, the said eye of wind are installed in the other end of fuel inlet adapter optionally to open and to seal the other end that fuel inlet is taken over.
6. side-blown spray gun according to claim 1 and 2 is characterized in that, said sleeve grooves and intervalve groove are many.
7. side-blown spray gun according to claim 6 is characterized in that, said sleeve grooves and intervalve groove are spiral groove or are the axial straight flute that is parallel to center sleeve.
8. side-blown spray gun according to claim 6 is characterized in that, the ejiction opening of the ejiction opening of said combustion-supporting gas injection channel and cooling medium injection channel circumferentially evenly distributes in the rear end face upper edge of center sleeve and intervalve respectively.
9. side-blown spray gun according to claim 1 is characterized in that, the cross section of said sleeve grooves and intervalve groove is rectangle or triangle.
10. side-blown spray gun according to claim 1 is characterized in that, said central tube is the abrasion resistant cast steel pipe, and said center sleeve, intervalve and outer layer sleeve are stainless steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910087963A CN101929802B (en) | 2009-06-25 | 2009-06-25 | Side-blown spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910087963A CN101929802B (en) | 2009-06-25 | 2009-06-25 | Side-blown spray gun |
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| CN101929802A CN101929802A (en) | 2010-12-29 |
| CN101929802B true CN101929802B (en) | 2012-09-05 |
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| CN200910087963A Active CN101929802B (en) | 2009-06-25 | 2009-06-25 | Side-blown spray gun |
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| CN102322742B (en) * | 2011-08-17 | 2014-02-19 | 中国恩菲工程技术有限公司 | Spraying gun |
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| CN108253799A (en) * | 2018-02-22 | 2018-07-06 | 中国恩菲工程技术有限公司 | side-blown spray gun |
| CN109780880B (en) * | 2019-03-18 | 2024-02-23 | 重庆赛迪热工环保工程技术有限公司 | Quick-dismantling structure of combustor |
| CN111748697A (en) * | 2019-03-28 | 2020-10-09 | 中国瑞林工程技术股份有限公司 | Smelting furnace |
| CN114719605A (en) * | 2020-06-09 | 2022-07-08 | 姜春辉 | Intelligent injection device for adding materials in metal/alloy smelting process |
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| CN101929802A (en) | 2010-12-29 |
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