CN212339244U - Scrap steel preheating spray gun - Google Patents
Scrap steel preheating spray gun Download PDFInfo
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- CN212339244U CN212339244U CN202021838371.4U CN202021838371U CN212339244U CN 212339244 U CN212339244 U CN 212339244U CN 202021838371 U CN202021838371 U CN 202021838371U CN 212339244 U CN212339244 U CN 212339244U
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Abstract
The utility model discloses a scrap steel preheating spray gun, which relates to the technical field of ferrous metallurgy, and comprises a gun body, wherein one side of the gun body is fixedly connected with a gas inlet pipeline communicated with the gun body, the bottom end of the gun body is fixedly connected with a gas accelerator a, the bottom end of the gas accelerator a is connected with a gas distributor, the bottom end of the gas distributor is respectively connected with a gas injection mechanism a and a gas injection mechanism b, and the gas injection mechanism b is fixedly connected with a mixed gas injection mechanism; the preheating effect is enhanced, the coverage is large, the preheating is uniform, the combustion rate and the utilization rate of the fuel gas are ensured, the preheating speed is high, the fuel gas is saved, and the energy-saving and consumption-reducing effects are obvious.
Description
Technical Field
The utility model relates to a ferrous metallurgy technical field, concretely relates to scrap steel preheats spray gun.
Background
Along with the rapid development of national economy, the accumulative amount of scrap steel in China society is rapidly increased, and the problems of improving the energy-saving and emission-reducing effects and improving the utilization rate of valuable elements in the scrap steel in the current steel metallurgy technical field are all the problems faced by the development of the current steel metallurgy technical field no matter in a converter steel-making process or an electric furnace steel-making process.
Under general conditions, the production rhythm of the converter flow and the electric furnace steelmaking flow can be shortened by preheating the scrap steel, and the production efficiency is improved. At present, steel scrap is added into an iron ladle or a steel ladle in a plurality of steel mills, then the steel scrap is baked by adopting a burner of a traditional ladle baking device, and in order to increase the baking efficiency, the preheating efficiency is improved by adopting modes such as prolonging flame and the like. However, when the flame preheated by the conventional scrap steel is sprayed out from the burner, the combustion space is insufficient, the upward lifting force is large, the scrap steel is difficult to be pressed down and enter an iron ladle or a steel ladle to be heated, and a large amount of heat energy is diffused and combusted in the space outside the ladle cover. Therefore, more time is required for baking, resulting in a large waste of gas. In addition, the method has the disadvantages of insufficient combustion of fuel gas, low combustion temperature and long baking time, and is difficult to meet the production requirement of the converter flow or the electric furnace flow for fast pace. When the single burner arranged on the ladle cover is used for baking, the flame coverage is small, the flame is well baked right at the position, even the local melting occurs, but the preheating temperature of the scrap steel in the area far away from the periphery of the flame is very low, so that the phenomenon of uneven preheating is caused, and the requirement of preheating the scrap steel in a steel mill is difficult to meet.
SUMMERY OF THE UTILITY MODEL
For solving exist not enough among the prior art, the utility model provides a scrap steel preheats spray gun strengthens preheating the effect, and coverage is big, preheats evenly, has guaranteed the combustion rate and the utilization ratio of gas, and preheating rate is fast, practices thrift the gas, and energy saving and consumption reduction effect is obvious.
The utility model discloses a solve the technical scheme that its technical problem adopted and be: the utility model provides a scrap steel preheats spray gun, includes the rifle body, rifle body one side fixedly connected with it communicating gas inlet line, rifle body bottom fixedly connected with gas accelerator a, gas accelerator a bottom is connected with the gas distributor, gas distributor bottom is connected with gas injection mechanism an and gas injection mechanism b respectively, gas injection mechanism b and mist injection mechanism fixed connection.
Further, the gas injection mechanism a comprises a gas nozzle pipeline and a gas nozzle a, one end of the gas nozzle pipeline is fixedly connected with the bottom end of the gas distributor, the other end of the gas nozzle pipeline is fixedly connected with the gas nozzle a, the side wall of the gas nozzle pipeline is connected with an igniter chamber through an igniter support, and an igniter used for igniting gas is arranged in the igniter chamber.
Further, the gas injection mechanism b comprises a gas nozzle b and a gas accelerator b, one end of the gas nozzle b is fixedly connected with the bottom end of the gas distributor, the other end of the gas nozzle b is fixedly connected with the gas accelerator b, and a gas spitting hole is fixedly connected with the bottom end of the gas accelerator b.
Furthermore, the mixed gas blowing mechanism comprises a combustion-supporting gas mixer, a mixed gas accelerator and a mixed gas nozzle, one end of the combustion-supporting gas mixer is communicated with the combustion-supporting gas conveying pipeline, the other end of the combustion-supporting gas mixer is fixedly connected with the mixed gas accelerator, and the mixed gas accelerator is fixedly connected with the mixed gas nozzle.
Further, the gas nozzle b coaxially penetrates into the combustion-supporting gas mixer, the outer wall of the gas nozzle b is welded on the pipe wall of the combustion-supporting gas conveying pipeline, and a combustion-supporting gas pipeline interface is welded at one end of the combustion-supporting gas conveying pipeline.
Furthermore, a plurality of combustion-supporting gas discharge holes are formed in the outer wall of the combustion-supporting gas mixer, which is close to one side of the gas nozzle a.
Further, bayonet socket is hung to rifle body top fixedly connected with rifle, and bayonet socket top fixedly connected with rifle is hung to the rifle, and perpendicular intercommunication has the air inlet pipeline that sweeps at rifle body lateral wall, sweeps air inlet pipeline one end fixedly connected with and sweeps air inlet pipeline interface.
Furthermore, the gas inlet pipeline is perpendicularly welded to the side wall of the gun body, and a gas inlet pipeline connector is welded at one end of the gas inlet pipeline.
Further, the gas accelerator a comprises a gas compression section, a throat and an expansion section which are sequentially communicated from top to bottom, and the diameter of the throat is smaller than that of the gas compression section and that of the expansion section; the gas accelerator a and the gas accelerator b have the same structure.
The utility model discloses possess following beneficial effect at least: the gas flow is accelerated by the gas accelerator before being sprayed out, and after being sprayed out of the gas nozzle by high-speed jet flow, the jet flow is high in speed and strong in penetrating power, so that the waste steel can be favorably drilled into gaps of waste steel for combustion, and the preheating effect is enhanced; meanwhile, the gas is injected from the outlets of the plurality of gas nozzles, so that the coverage range is large, the preheating is uniform, the gas is prevented from being concentrated at a certain position, the preheating temperature of the scrap steel at the concentrated heating position is too high and even molten, the scrap steel is over-oxidized and even molten, the scrap steel blocks a steel outlet or a ventilation plug and the like, and the problems of insufficient coverage of high-temperature gas at other positions, low preheating temperature, non-uniform preheating and the like are also avoided; and on the basis of mixing combustion-supporting gas in the combustion-supporting gas mixer, the combustion-supporting gas is also mixed outside in the area in front of the combustion-supporting gas discharge hole, so that the combustion rate and the utilization rate of the gas are fully ensured, the preheating speed is high, the preheating effect is good and stable, the gas is saved, and the energy-saving and consumption-reducing effects are obvious.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a partial structure of the present invention;
FIG. 3 is an enlarged view of a portion of the structure of the present invention;
FIG. 4 is a schematic view of a part of the structure of the present invention;
FIG. 5 is a schematic structural view of the gas accelerator of the present invention;
fig. 6 is a schematic view of the structure of the gas nozzle of the present invention.
The reference numbers in the figures are as follows: 1. the gun-mounted joint comprises a gun-mounted joint body 2, a gun-mounted bayonet 3, a purging air inlet pipeline 4, a purging air inlet pipeline interface 5, a gun body 6, a combustion-supporting gas pipeline interface 7, a combustion-supporting gas conveying pipeline 8, a combustion-supporting gas mixer 9, a gas spitting hole 10, a gas nozzle pipeline 11, gas nozzles a and 12, a combustion-supporting gas discharge hole 13, an igniter chamber 14, an igniter support 15, a mixed gas nozzle 16, a mixed gas accelerator 17, gas accelerators b and 18, gas nozzles b and 19, a gas distributor 20, a gas accelerator a and 21, a gas inlet pipeline interface 22, a gas inlet pipeline 23 and a guide plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Example 1
The utility model provides a scrap steel preheats spray gun, includes the rifle body 5, 5 top fixedly connected with guns of the rifle body hang card mouth 2, and 2 top fixedly connected with guns of the rifle string of card mouth hang and connect 1, have the air inlet line 3 that sweeps in 5 lateral walls of the rifle body perpendicular intercommunication, sweep 3 one end fixedly connected with of air inlet line and sweep air inlet line interface 4.
And one side of the gun body 5 is vertically and fixedly connected with a gas inlet pipeline 22 communicated with the gun body, and one end of the gas inlet pipeline 22 is welded with a gas inlet pipeline interface 21. The bottom end of the gun body 5 is fixedly connected with a gas accelerator a20, the bottom end of the gas accelerator a20 is connected with a gas distributor 19, the bottom end of the gas distributor 19 is respectively connected with a gas injection mechanism a and a gas injection mechanism b, and the gas injection mechanism b is fixedly connected with a mixed gas injection mechanism.
The gas injection mechanism a comprises a gas nozzle pipeline 10 and a gas nozzle a11, one end of the gas nozzle pipeline 10 is fixedly connected with the bottom end of the gas distributor 19, the other end of the gas nozzle pipeline is fixedly connected with a gas nozzle a11, the side wall of the gas nozzle pipeline 10 is connected with an igniter chamber 13 through an igniter support 14, and an igniter for igniting gas is arranged in the igniter chamber 13.
The gas blowing mechanism b comprises a gas nozzle b18 and a gas accelerator b17, one end of the gas nozzle b18 is fixedly connected with the bottom end of the gas distributor 19, the other end of the gas nozzle b18 is fixedly connected with the gas accelerator b17, and the bottom end of the gas accelerator b17 is fixedly connected with a gas spitting hole 9.
The mixed gas blowing mechanism comprises a combustion-supporting gas mixer 8, a mixed gas accelerator 16 and a mixed gas nozzle 15, one end of the combustion-supporting gas mixer 8 is communicated with the combustion-supporting gas conveying pipeline 7, the other end of the combustion-supporting gas mixer is fixedly connected with the mixed gas accelerator 16, and the mixed gas accelerator 16 is fixedly connected with the mixed gas nozzle 15. The outer wall of the combustion-supporting gas mixer 8 close to one side of the gas nozzle a11 is provided with a plurality of combustion-supporting gas discharge holes 12.
The gas nozzle b18 coaxially penetrates into the combustion-supporting gas mixer 8, the outer wall of the gas nozzle b18 is welded on the pipe wall of the combustion-supporting gas conveying pipeline 7, and a combustion-supporting gas pipeline connector 6 is welded at one end of the combustion-supporting gas conveying pipeline 7.
The gas accelerator a20 comprises a gas compression section 201, a throat 202 and an expansion section 203 which are sequentially communicated from top to bottom, wherein the diameter of the throat 202 is smaller than that of the gas compression section 201 and that of the expansion section 203; the gas accelerator a20 has the same structure as the gas accelerator b17 and the mixed gas accelerator 16.
Combustion-supporting gas enters a combustion-supporting gas mixer 8 from a combustion-supporting gas pipeline interface 6 through a combustion-supporting gas conveying pipeline 7, and part of the combustion-supporting gas is discharged through a plurality of combustion-supporting gas discharge holes 12; part of the combustion-supporting gas enters the front end of the mixed gas accelerator 16 to be mixed with the fuel gas, the mixed gas enters the gas compression section 201 of the mixed gas accelerator 16, flows through the throat 202 after being compressed, and finally accelerates to flow out of the mixed gas accelerator 16 in the expansion section 203 and is discharged through the mixed gas nozzle 15.
Preferably, in this embodiment, a plurality of gas nozzle pipes 10 and gas nozzles b18 are provided, and the above-mentioned fixing connection manner is preferably welding in this embodiment. As shown in fig. 6, the gas discharge hole 9 and the gas nozzle a11 are provided with a baffle plate 23, and the gas enters from the top end of the gas nozzle 11 or the gas discharge hole 9, is divided into a plurality of gas flows by the baffle plate 23, is dispersed and discharged from the bottom of the gas nozzle 11 or the gas discharge hole 9, is mixed with the combustion-supporting gas and then is ignited by the igniter, and is combusted to release heat to preheat the scrap steel.
The gas jet injection device has the advantages of high gas jet injection speed and strong penetrating power, is favorable for being drilled into a scrap steel gap to burn, and enhances the preheating effect. And a plurality of nozzles spray, the preheating coverage is large, and the preheating is uniform. On the basis of mixing combustion-supporting gas in the combustion-supporting gas mixer, the combustion-supporting gas is also mixed outside in the area in front of the combustion-supporting gas discharge hole, so that the combustion rate and the utilization rate of gas are fully guaranteed, the preheating speed is high, the preheating effect is good and stable, the gas is saved, and the energy-saving and consumption-reducing effects are obvious.
The above description is only the specific implementation manner of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the design of the present invention within the technical scope of the present invention.
Claims (9)
1. The utility model provides a scrap steel preheats spray gun, includes the rifle body (5), its characterized in that, rifle body (5) one side fixedly connected with communicating gas inlet pipe way (22) with it, rifle body (5) bottom fixedly connected with gas accelerator a (20), gas accelerator a (20) bottom is connected with gas distributor (19), gas distributor (19) bottom is connected with gas injection mechanism a and gas injection mechanism b respectively, gas injection mechanism b and mist injection mechanism fixed connection.
2. The scrap preheating lance according to claim 1, wherein the gas injection mechanism a comprises a gas nozzle pipeline (10) and a gas nozzle a (11), one end of the gas nozzle pipeline (10) is fixedly connected with the bottom end of a gas distributor (19), the other end of the gas nozzle pipeline is fixedly connected with the gas nozzle a (11), an igniter chamber (13) is connected to the side wall of the gas nozzle pipeline (10) through an igniter bracket (14), and an igniter for igniting gas is arranged in the igniter chamber (13).
3. The scrap preheating lance according to claim 1, wherein the gas injection mechanism b comprises a gas nozzle b (18) and a gas accelerator b (17), one end of the gas nozzle b (18) is fixedly connected with the bottom end of a gas distributor (19), the other end of the gas nozzle b (18) is fixedly connected with the gas accelerator b (17), and the gas spitting hole (9) is fixedly connected with the bottom end of the gas accelerator b (17).
4. The scrap steel preheating lance according to claim 1, wherein the mixed gas injection mechanism comprises a combustion-supporting gas mixer (8), a mixed gas accelerator (16) and a mixed gas nozzle (15), one end of the combustion-supporting gas mixer (8) is communicated with the combustion-supporting gas conveying pipeline (7), the other end of the combustion-supporting gas mixer is fixedly connected with the mixed gas accelerator (16), and the mixed gas accelerator (16) is fixedly connected with the mixed gas nozzle (15).
5. The scrap preheating lance according to claim 3, wherein the gas nozzle b (18) coaxially penetrates into the combustion-supporting gas mixer (8), the outer wall of the gas nozzle b (18) is welded on the wall of the combustion-supporting gas conveying pipeline (7), and a combustion-supporting gas pipeline interface (6) is welded at one end of the combustion-supporting gas conveying pipeline (7).
6. The scrap preheating lance according to claim 4, wherein the combustion-supporting gas mixer (8) is provided with a plurality of combustion-supporting gas discharge holes (12) on the outer wall of the side close to the gas nozzle a (11).
7. The scrap steel preheating spray gun according to claim 1, wherein a gun hanging bayonet (2) is fixedly connected to the top end of the gun body (5), a gun hanging connector (1) is fixedly connected to the top end of the gun hanging bayonet (2), a purging air inlet pipeline (3) is vertically communicated with the side wall of the gun body (5), and a purging air inlet pipeline connector (4) is fixedly connected to one end of the purging air inlet pipeline (3).
8. The scrap preheating lance according to claim 1, wherein the gas inlet pipe (22) is vertically welded to the side wall of the lance body (5), and one end of the gas inlet pipe (22) is welded with a gas inlet pipe joint (21).
9. The scrap preheating lance according to claim 1, wherein the gas accelerator a (20) comprises a gas compression section (201), a throat (202) and an expansion section (203) which are sequentially communicated from top to bottom, and the diameter of the throat (202) is smaller than that of the gas compression section (201) and that of the expansion section (203); the gas accelerator a (20) and the gas accelerator b (17) have the same structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021838371.4U CN212339244U (en) | 2020-08-28 | 2020-08-28 | Scrap steel preheating spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021838371.4U CN212339244U (en) | 2020-08-28 | 2020-08-28 | Scrap steel preheating spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212339244U true CN212339244U (en) | 2021-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021838371.4U Active CN212339244U (en) | 2020-08-28 | 2020-08-28 | Scrap steel preheating spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212339244U (en) |
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2020
- 2020-08-28 CN CN202021838371.4U patent/CN212339244U/en active Active
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