CN202267367U - Spray gun - Google Patents
Spray gun Download PDFInfo
- Publication number
- CN202267367U CN202267367U CN2011203000081U CN201120300008U CN202267367U CN 202267367 U CN202267367 U CN 202267367U CN 2011203000081 U CN2011203000081 U CN 2011203000081U CN 201120300008 U CN201120300008 U CN 201120300008U CN 202267367 U CN202267367 U CN 202267367U
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- China
- Prior art keywords
- sleeve
- intervalve
- cooling medium
- central tube
- spray gun
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Abstract
The utility model discloses a spray gun, which comprises a central tube, a central sleeve, a middle tube and an outer layer sleeve, wherein a wear-resisting ceramic layer is arranged on the inner wall of the central tube, a sleeve groove is formed on the outer wall of the central sleeve, the central sleeve is sleeved outside the central tube, the length of the central sleeve is smaller than that of the central tube, the middle tube is sleeved outside the central sleeve, a combustion-supporting gas chamber is formed between the front portion of the central tube and the middle tube, the external diameter of the back portion of the middle tube is larger than that of the front portion of the middle tube, and a middle tube groove is formed on the outer wall of the back portion of the middle tube. The outer layer sleeve is sleeved outside the middle tube, a cooling medium chamber is formed between the front portion of the middle tube and the outer layer sleeve, and a cooling medium spray channel is defined by the inner wall of the outer layer sleeve and the middle tube groove. By means of the spray gun and the wear-resisting ceramic layer, abrasion of the central tube caused by spraying baring powder coal is reduced, and service life and changing period are prolonged. In addition, a larger combustion-supporting gas chamber can be formed between the front portion of the central tube and the front portion of the middle tube, so that gas resistance is greatly reduced, and consumption and cost are reduced.
Description
Technical field
The utility model relates to a kind of spray gun, especially relates to a kind of 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 metallurgical technology of side-blown or bottom blowing has obtained using widely, and spray gun has become metallurgical used visual plant.For example, side-blown spray gun that in refining phosphorus by hot method, uses and the bottom blowing spray gun that in bottom blowing refining lead, uses.
The central tube of traditional side-blown or bottom blowing spray gun very easily produces wearing and tearing as the fuel channel of burner oil such as coal dust or heavy oil.
The utility model content
The utility model is intended to solve at least one of technical problem that exists in the prior art.For this reason, the utility model purpose is to propose a kind of processing cost and the low spray gun of maintenance cost.
A kind of spray gun according to the utility model comprises: central tube, and the inwall of said central tube is provided with the wear-resistant ceramic layer; It is concordant with the rear end of said central tube that center sleeve, said center sleeve are enclosed within the rear end of central tube outside and said center sleeve, is formed with sleeve grooves on the outer wall of the length of center sleeve less than the length of said central tube and said center sleeve; Intervalve; It is concordant with the rear end of said center sleeve that said intervalve is enclosed within the rear end of center sleeve outside and said intervalve; Form the combustion-supporting gas chamber between the front portion of wherein said central tube and the intervalve; Thereby 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; 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 the spray gun of the utility model, through on the inwall of central tube, being provided with the wear-resistant ceramic layer, reduced to spray coal dust and the wearing and tearing that cause, increased the life-span, prolonged the replacement cycle.In addition; Owing to be provided with center sleeve in the central tube outside; And the sleeve grooves of spraying combustion-supporting gas is formed on the outer wall of intermediate casing, therefore need not on each central tube of changing, to form the groove that sprays combustion-supporting gas, reduced the processing cost of central tube; Center sleeve can be reused for central tube, thereby has reduced the manufacturing cost and the maintenance cost of whole spray gun.Further, can form bigger combustion-supporting gas chamber, space because the length of center sleeve less than the length of central tube, makes between the front portion of front portion and intervalve of central tube, air resistance reduces greatly, has reduced energy consumption and cost.
In addition, the spray gun according to the utility model also has following additional technical feature:
Said spray gun 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 base, said fuel base links to each other with the combustion-supporting gas joint and has centre bore, and said centre bore is communicated with the centre bore of central tube.
Through the cooling medium joint is set; Combustion-supporting gas joint and fuel base; And between them, 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 spray gun from cooling medium source, combustion-supporting gas source and fuels sources.
Said spray gun also further comprises 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.
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 central tube, center sleeve, intervalve and outer layer sleeve are coaxial successively sheathed.
Said sleeve grooves and intervalve groove are many.
Said sleeve grooves and intervalve groove are spiral groove or are the axial straight flute that is parallel to center sleeve.
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.
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 spray gun.
The cross section of said sleeve grooves and intervalve groove is rectangle or triangle.
Said central tube, center sleeve, intervalve and outer layer sleeve are stainless steel tube.
According to the spray gun of the utility model, through on the inwall of the central tube of feed coal dust, being provided with the wear-resistant ceramic layer, central tube is difficult for being worn thus.Even if after being worn, can central tube be extracted out in center sleeve, new central tube in the replacing, other elements can be reused, and need not to process the groove as injection of oxygen thus on the central tube, and processing is simple, and cost is low, and maintenance cost reduces.
Additional aspect of the utility model and advantage part in the following description provide, and part will become obviously from the following description, or recognize through the practice of the utility model.
Description of drawings
Above-mentioned and/or additional aspect of the utility model 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 spray gun of the utility model embodiment;
Fig. 2 is the enlarged drawing that Fig. 1 centre circle shows M portion;
Fig. 3 is the profile along the A-A among Fig. 2;
The specific embodiment
Describe the embodiment of the utility model 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 utility model, and can not be interpreted as restriction the utility model.
In the description of the utility model; It will be appreciated that; The orientation of indication such as term " vertically ", " laterally ", " preceding ", " back ", " left side ", " right side ", " interior ", " outward " or position relation are for concerning based on orientation shown in the drawings or position; Only be to describe with simplifying for the ease of describing the utility model; Rather than the device or the element of indication or hint indication must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction to the utility model.In addition, term " first ", " second " only are used to describe purpose, and can not be interpreted as indication or hint relative importance.
In the description of the utility model, need to prove that only if clear and definite regulation and qualification are arranged in addition, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be to be fixedly connected, also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can link to each other indirectly through intermediary, can be the connection of two element internals.For those of ordinary skill in the art, can concrete condition understand the concrete implication of above-mentioned term in the utility model.In addition, in the description of the utility model, except as otherwise noted, the implication of " a plurality of " is two or more.
Following with reference to the spray gun of figure 1-Fig. 3 description according to the utility model embodiment; Be used for the continuous reduction furnace of lead skim with 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 utility model for ease, and can not be interpreted as the restriction to the utility model.
Like Fig. 1-shown in Figure 2, comprise central tube 4, center sleeve 3, intervalve 2 and outer layer sleeve 1 according to the spray gun of the utility model embodiment.Thereby the nested successively forming sleeves structure of above-mentioned four pipes, alternatively, central tube 4, center sleeve 3, intervalve 2 and outer layer sleeve 1 are coaxial thus sheathed.
The inwall of central tube 4 is provided with wear-resistant ceramic layer 40, and the centre bore 5 formation fuel injection passages of central tube 4, is used for through wind coal dust being ejected in the continuous reduction furnace of lead skim.
It is concordant with the rear end of center sleeve 3 that intervalve 2 is enclosed within the rear end of center sleeve 3 outsides and intervalve 2; Doughnut between the front portion of central tube 4 and the intervalve 2 constitutes combustion-supporting gas chamber 9; Center sleeve 3 cooperates with intervalve 2, thereby the inwall of intervalve 2 and sleeve grooves 7 limit the combustion-supporting gas injection channel.In other words, between center sleeve 3 and intervalve 2, oxygen mainly ejects through sleeve grooves 7, for example can be the very little matched in clearance in gap between center sleeve 3 and the intervalve 2.In other words, the inwall that also can think intervalve 2 is defined as the combustion-supporting gas injection channel with sleeve grooves 7.If the excesssive gap between the outer wall of the inwall of intervalve 2 and center sleeve 3; Then oxygen also can be sent in the continuous reduction furnace of lead skim through above-mentioned gap; And can mainly not spray through sleeve grooves 7, thereby jeting effect reduces, and the jet-action of sleeve grooves 7 reduces or lost efficacy.
The external diameter at the rear portion of intervalve 2 is 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.
Here, term " front portion " and " rear portion " are the convenience in order to describe, and wherein the side (being the right side among Fig. 1) that is inserted in the continuous reduction furnace of lead skim of spray gun is the rear portion, and a relative side (being the left side among Fig. 1) is for anterior.For example, for intervalve 2, the length of front and rear, promptly be formed with intervalve groove 6 part length and do not form the length of the part of intervalve groove 6, can confirm as required and divide.In other words, the length of intervalve groove 6 can be confirmed according to concrete application.
Outer layer sleeve 1 is enclosed within intervalve 2 outsides, thereby forms cooling medium chamber 8 between the front portion of intervalve 2 and the outer layer sleeve 1, thereby and the rear portion of intervalve 2 cooperates the inwall of outer layer sleeve 1 and intervalve groove 6 to limit the cooling medium injection channel with outer layer sleeve 1.In other words, between the rear portion and intervalve groove 6 of outer layer sleeve 1, cooling medium mainly ejects through intervalve groove 6, for example can be the very little matched in clearance in gap between the rear portion of intervalve 2 and the outer layer sleeve 1.In other words, the inwall that also can think outer layer sleeve 1 is defined as the cooling medium injection channel with intervalve groove 6.If the excesssive gap between the outer wall at the rear portion of the inwall of outer layer sleeve 1 and intervalve 2; Then cooling medium also can be sent in the continuous reduction furnace of lead skim through above-mentioned gap; And can be mainly through 6 ejections of intervalve groove; Thereby jeting effect reduces, and the jet-action of intervalve groove 6 reduces or lost efficacy.
According to the spray gun of the utility model embodiment, through on the inwall of central tube 4, being provided with wear-resistant ceramic layer 40, reduced to spray coal dust and the wearing and tearing that cause, increased the life-span, prolonged the replacement cycle.In addition; 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 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 spray gun.Further, can form bigger combustion-supporting gas chamber, space because the length of center sleeve 3 less than the length of central tube 4, makes between the front portion of front portion and intervalve 2 of central tube 4, air resistance reduces greatly, has reduced energy consumption and cost.
In a concrete example according to the utility model, 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 the groove around the axis spiralization of center sleeve 3.
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.
In another concrete example of the utility model, 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.
In an example of the utility model, central tube 4, center sleeve 3, intervalve 2 and outer layer sleeve 4 are stainless steel tube.
Spray gun according to the further embodiment of the utility model further comprises cooling medium joint 14, combustion-supporting gas joint 16 and fuel base 10.
In the further example of the utility model; Spray gun also comprises cooling medium shower nozzle (scheming not shown); The cooling medium shower nozzle is installed in the cooling medium joint 14 and with cooling medium joint 14 and limits cooling medium mixing chamber (scheming not shown), and the first and second cooling medium access roades 11,12 are communicated with cooling medium chamber 8 through the cooling medium mixing chamber.The nitrogen G&W can mix the back and get in the cooling medium chamber 8 in the cooling medium mixing chamber; The cooling medium injection channel that limits of inwall through intervalve groove 6 and outer layer sleeve 1 is ejected in the continuous reduction furnace stove of lead skim 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 first sealing gasket 15 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 base 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 5 of central tube 4.Between them, be provided with second sealing gasket 17 to increase sealing property.
Following with reference to the simple operation of describing according to the spray gun of the utility model embodiment of figure 1-Fig. 3.
With wind coal dust is delivered in the central tube 4 through fuel base 10 drums, sprayed in the continuous reduction furnace of lead skim from the rear end of central tube 4.Simultaneously oxygen is sent in the combustion-supporting gas chamber 9 through combustion-supporting gas access road 13; Be ejected in the continuous reduction furnace stove of lead skim from the rear end through combustion-supporting gas injection channel (being the sleeve grooves 7 of center sleeve 3) then; An oxygen part that sprays into provides melting required heat with the coal dust reaction, and another part is as reducing agent.And; It is indoor that nitrogen or air supply to cooling medium from the first cooling medium access road 11; Water supplies in the cooling medium from the second cooling medium access road 12; Nitrogen and water get in the cooling medium chamber 8 after mixing in that cooling medium is indoor, supply with cooling medium injection channel (being intervalve groove 6) then and are ejected in the continuous reduction furnace of lead skim from the rear end, cool off spray gun thus.
Through on the inwall of the central tube 4 of feed coal dust, being provided with wear-resistant ceramic layer 40, central tube 4 is difficult for being worn thus.Even if after being worn, can central tube 4 be extracted out in center sleeve 3, new central tube 4 replacings in, other elements can be reused, and need not to process the groove as injection of oxygen thus on the central tube 4, processing simply, cost is low, the maintenance cost reduction.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained among at least one embodiment or example of the utility model.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described the embodiment of the utility model; Those having ordinary skill in the art will appreciate that: under the situation of principle that does not break away from the utility model and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, the scope of the utility model is limited claim and equivalent thereof.
Claims (9)
1. a spray gun is characterized in that, comprising:
Central tube, the inwall of said central tube is provided with the wear-resistant ceramic layer;
It is concordant with the rear end of said central tube that center sleeve, said center sleeve are enclosed within the rear end of central tube outside and said center sleeve, is formed with sleeve grooves on the outer wall of the length of center sleeve less than the length of said central tube and said center sleeve;
Intervalve; It is concordant with the rear end of said center sleeve that said intervalve is enclosed within the rear end of center sleeve outside and said intervalve; Form the combustion-supporting gas chamber between the front portion of wherein said central tube and the intervalve; Thereby 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. 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
Fuel base, said fuel base link to each other with the combustion-supporting gas joint and have centre bore, and said centre bore is communicated with the centre bore of central tube.
3. spray gun according to claim 2; 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.
4. according to each described spray gun among the claim 1-3, it is characterized in that said central tube, center sleeve, intervalve and outer layer sleeve are coaxial successively sheathed.
5. spray gun according to claim 1 and 2 is characterized in that, said sleeve grooves and intervalve groove are many.
6. spray gun according to claim 5 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.
7. spray gun according to claim 5 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.
8. spray gun according to claim 1 is characterized in that, the cross section of said sleeve grooves and intervalve groove is rectangle or triangle.
9. spray gun according to claim 1 is characterized in that said central tube, center sleeve, intervalve and outer layer sleeve are stainless steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203000081U CN202267367U (en) | 2011-08-17 | 2011-08-17 | Spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203000081U CN202267367U (en) | 2011-08-17 | 2011-08-17 | Spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202267367U true CN202267367U (en) | 2012-06-06 |
Family
ID=46158160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203000081U Withdrawn - After Issue CN202267367U (en) | 2011-08-17 | 2011-08-17 | Spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202267367U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322742A (en) * | 2011-08-17 | 2012-01-18 | 中国恩菲工程技术有限公司 | Spraying gun |
| CN103335526A (en) * | 2013-07-18 | 2013-10-02 | 湖南华信有色金属有限公司 | Water gas spray gun for oxygen-enriched side blowing melting furnace molten pool |
-
2011
- 2011-08-17 CN CN2011203000081U patent/CN202267367U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322742A (en) * | 2011-08-17 | 2012-01-18 | 中国恩菲工程技术有限公司 | Spraying gun |
| CN102322742B (en) * | 2011-08-17 | 2014-02-19 | 中国恩菲工程技术有限公司 | Spraying gun |
| CN103335526A (en) * | 2013-07-18 | 2013-10-02 | 湖南华信有色金属有限公司 | Water gas spray gun for oxygen-enriched side blowing melting furnace molten pool |
| CN103335526B (en) * | 2013-07-18 | 2015-02-18 | 湖南华信有色金属有限公司 | Water gas spray gun for oxygen-enriched side blowing melting furnace molten pool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120606 Effective date of abandoning: 20140219 |
|
| RGAV | Abandon patent right to avoid regrant |