Adjustable natural gas spray gun for nickel smelting of side-blown converter

Abstract

The utility model relates to the technical field of side-blown converter nickel smelting, in particular to a side-blown converter nickel smelting adjustable natural gas spray gun which comprises an inner connecting pipe, a two-way connector, a natural gas flow control valve, an outer connecting pipe, a compressed air flow control valve, an outer core and an inner core. The left end of the inner connecting pipe fixedly communicates with a two-way connector, and a natural gas flow control valve is installed at the gas inlet end of the two-way connector. The inner side of the left end of the outer connecting pipe is in sealed connection with the inner connecting pipe at the corresponding position, a compressed air flow control valve is fixedly installed on the outer side of the outer connecting pipe, and a hollow outer core is installed on the outer side of the inner connecting pipe located on the inner side of the right portion of the outer connecting pipe in a threaded mode; the compressed air flow control valve and the natural gas flow control valve are arranged to control the flow of compressed air and natural gas, so that the proportion of mixed gas of the compressed air and the natural gas is controlled, the mixing proportion of the mixed gas is uniform, sufficient combustion of the mixed gas in the furnace body is facilitated, and the utilization rate of energy is effectively increased; the environmental pollution is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of nickel smelting in a side-blown furnace, in particular to an adjustable natural gas spray gun for nickel smelting in a side-blown furnace. Background Art

[0002] In the field of nickel smelting, the technology of nickel smelting in synthetic furnaces has been outdated. As the output of nickel smelting increases, the technology of nickel smelting in side-blown furnaces has gradually matured. At present, the process of pyrometallurgical nickel smelting not only consumes a lot of energy, but also causes many problems such as environmental pollution and incomplete energy combustion. In order to reduce environmental pollution and efficiently utilize resources, traditional natural gas spray guns are no longer suitable for the field of nickel smelting in side-blown furnaces. The gas flow of traditional natural gas spray guns cannot be controlled, the mixing ratio of the mixed gas is uneven, the structure of the inner core and the outer core affects the life of the spray gun, and the inner core is often blown into the furnace by gas.

[0003] Therefore, it is necessary to design a spray gun suitable for side-blown furnace nickel smelting to accurately control the flow of natural gas and compressed air. Utility Model Content

[0004] The utility model provides an adjustable natural gas spray gun for nickel smelting in a side-blown furnace, which overcomes the shortcomings of the prior art and can effectively solve the problem of uneven gas mixing ratio caused by the inability of the prior natural gas spray gun to control the gas flow.

[0005] In order to solve the above problems, the utility model discloses an adjustable natural gas spray gun for nickel smelting in a side-blown furnace, comprising an inner pipe, a two-way joint, a natural gas flow control valve, an outer pipe, a compressed air flow control valve, an outer core and an inner core; the left end of the inner pipe is fixedly connected with a two-way joint, and the air inlet end of the two-way joint is equipped with a natural gas flow control valve; the outer side of the inner pipe is sleeved with an outer pipe, and the inner side of the left end of the external pipe is sealed with the inner pipe at the corresponding position, a compressed air flow control valve is fixedly installed on the outer side of the external pipe, a hollow outer core is threadedly installed on the outer side of the inner pipe located on the inner side of the right part of the external pipe, a plurality of protrusions are arranged at intervals along the axial direction on the outer side of the outer core, an inner core with a through center hole opened along the axial direction is clamped on the inner side of the outer core, and a plurality of grooves are arranged at intervals along the axial direction on the outer side of the inner core.

[0006] A first shoulder is provided on the inner side of the outer core, and the inner core includes an integrally formed cylindrical core and a conical core. A second shoulder matching the first shoulder is provided on the outer side of the cylindrical core close to one side of the conical core, and the end face of the first shoulder contacts the end face of the second shoulder.

[0007] The above also includes a clamping nut, a rubber sleeve and a positioning sleeve. The rubber sleeve and the positioning sleeve are mounted on the outer side of the inner tube at the inner side of the left end of the external tube. A first external thread is provided on the outer side of the left end of the external tube, and a second external thread is provided on the outer side of the inner tube corresponding to the left end of the external tube. The clamping nut is screwed on the first external thread and the second external thread in sequence from left to right.

[0008] The above also includes a natural gas connecting pipe, and the two-way joint and the natural gas flow control valve are fixedly connected through the natural gas connecting pipe.

[0009] The above also includes a compressed air connecting pipe, and the external pipe and the compressed air flow control valve are fixedly connected through the compressed air connecting pipe.

[0010] The utility model controls the flow rates of compressed air and natural gas by arranging a compressed air flow control valve and a natural gas flow control valve, thereby controlling the mixed gas ratio of compressed air and natural gas, making the mixed gas mixing ratio uniform, facilitating full combustion of the mixed gas in the furnace body, effectively improving energy utilization, and reducing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0012] Figure 1 It is a schematic diagram of the main structure of the spray gun of the utility model.

[0013] Figure 2 for Figure 1 Schematic diagram of the enlarged cross-sectional structure at point A in the middle.

[0014] Figure 3 for Figure 1 Schematic diagram of the enlarged cross-sectional structure at point B in the middle.

[0015] Figure 4 It is a three-dimensional structural schematic diagram of the inner core of the utility model.

[0016] Figure 5 It is a three-dimensional structural schematic diagram of the outer core of the utility model.

[0017] In the figure: 1-internal pipe, 2-two-way joint, 3-natural gas flow control valve, 4-external pipe, 5-compressed air flow control valve, 6-external core, 7-inner core, 8-protrusion, 9-center hole, 10-groove, 11-first shoulder, 12-second shoulder, 13-pressing nut, 14-rubber sleeve, 15-positioning sleeve, 16-natural gas connecting pipe, 17-compressed air connecting pipe, 18-cylindrical core, 19-conical core. DETAILED DESCRIPTION

[0018] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0019] The present invention is further described below in conjunction with the embodiments and drawings:

[0020] like Figure 1-5As shown, an adjustable natural gas spray gun for nickel smelting in a side-blown furnace comprises an inner pipe 1, a two-way joint 2, a natural gas flow control valve 3, an outer pipe 4, a compressed air flow control valve 5, an outer core 6 and an inner core 7; the left end of the inner pipe 1 is fixedly connected with the two-way joint 2, and the air inlet end of the two-way joint 2 is installed with the natural gas flow control valve 3; the outer side of the inner pipe 1 is sleeved with the outer side of the inner pipe 1, and the inner side of the left end of the outer pipe 4 is sealed and connected with the inner pipe 1 at the corresponding position, the compressed air flow control valve 5 is fixedly installed on the outer side of the external pipe 4, the outer side of the inner pipe 1 located on the inner side of the right part of the external pipe 4 is threadedly installed with a hollow outer core 6, a plurality of protrusions 8 are arranged at intervals along the axial direction on the outer side of the outer core 6, an inner core 7 with a through center hole 9 opened along the axial direction is clamped on the inner side of the outer core 6, and a plurality of grooves 10 are arranged at intervals along the axial direction on the outer side of the inner core 7.

[0021] During operation, the port of the natural gas flow control valve 3 is connected to the external natural gas supply pipeline, and the flow rate of the natural gas is adjusted by the natural gas flow control valve 3, so that a certain amount of natural gas enters the internal pipe 1; the port of the compressed air flow control valve 5 is connected to the external compressed air supply pipeline, and the flow rate of the compressed air is adjusted by the compressed air flow control valve 5, so that a certain amount of compressed air enters the external pipe 4; the compressed air and natural gas enter the inner side of the furnace body through the external pipe 4 and the internal pipe 1 respectively, and the amount of compressed gas and natural gas is controlled to make the mixed ratio of the mixed gas entering the furnace body uniform, so that the mixed gas can be fully burned inside the furnace body.

[0022] The compressed air in the external pipe 4 flows through the grooves in the middle of the plurality of protrusions 8 on the outside of the outer core 6 ; the natural gas in the internal pipe 1 flows through the central hole 9 of the inner core 7 and the outer grooves 10 .

[0023] In summary, the utility model controls the flow of compressed air and natural gas by setting a compressed air flow control valve 5 and a natural gas flow control valve 3, thereby controlling the mixed gas ratio of compressed air and natural gas, making the mixed gas mixing ratio uniform, facilitating the full combustion of the mixed gas in the furnace body, effectively improving the utilization rate of energy, and reducing environmental pollution.

[0024] like Figure 3 , 5 As shown, a first shoulder 11 is provided on the inner side of the outer core 6, and the inner core 7 includes an integrally formed cylindrical core 18 and a conical core 19. A second shoulder 12 matching the first shoulder 11 is provided on the outer side of the cylindrical core 18 close to one side of the conical core 19, and the end face of the first shoulder 11 is in contact with the end face of the second shoulder 12.

[0025] When the natural gas in the inner pipe 1 flows, it exerts a thrust on the inner core 7. By abutting the second shoulder 12 of the inner core 7 against the first shoulder 11 of the outer core 6, the position of the inner core 7 is fixed, thereby preventing the inner core 7 from being blown by the natural gas and blown into the furnace body, thereby increasing the service life of the spray gun.

[0026] Wherein, by arranging the inner core 7 to include the conical core 19, the conical structure facilitates the natural gas to flow from the groove 10 into the interior of the furnace body.

[0027] like Figure 1 , 2 As shown, it also includes a clamping nut 13, a rubber sleeve 14 and a positioning sleeve 15. The rubber sleeve 14 and the positioning sleeve 15 are sleeved on the outer side of the inner tube 1 at the inner side of the left end of the external tube 4; a first external thread is provided on the outer side of the left end of the external tube 4, and a second external thread is provided on the outer side of the inner tube 1 corresponding to the left end of the external tube 4. The clamping nut 13 is screwed on the first external thread and the second external thread in sequence from left to right.

[0028] Among them, the clamping nut 13 is used to connect the external tube 4 and the internal tube 1 together. At the same time, through the cooperation of the clamping nut 13, the rubber sleeve 14 and the positioning sleeve 15, the left end port of the external tube 4 is blocked to prevent compressed air from flowing out from the left end of the external tube 4.

[0029] like Figure 1 As shown, a natural gas connecting pipe 16 is also included, and the two-way connector 2 and the natural gas flow control valve 3 are fixedly connected through the natural gas connecting pipe 16. Thus, the connection between the two-way connector 2 and the natural gas flow control valve 3 is convenient.

[0030] like Figure 1 As shown, it also includes a compressed air connecting pipe 17, and the external pipe 4 and the compressed air flow control valve 5 are fixedly connected through the compressed air connecting pipe 17. Thus, the connection between the external pipe 4 and the compressed air flow control valve 5 is convenient.

Claims

1. An adjustable natural gas spray gun for nickel smelting in a side-blown furnace, characterized in that: It includes an inner pipe, a two-way joint, a natural gas flow control valve, an outer pipe, a compressed air flow control valve, an outer core and an inner core; the left end of the inner pipe is fixedly connected with the two-way joint, and the air inlet end of the two-way joint is equipped with a natural gas flow control valve; the outer side of the inner pipe is sleeved with the outer side of the outer pipe, and the inner side of the left end of the external pipe is sealed with the inner pipe at the corresponding position, the outer side of the external pipe is fixedly equipped with a compressed air flow control valve, the outer side of the inner pipe located on the inner side of the right part of the external pipe is threadedly installed with a hollow outer core, the outer side of the outer core is provided with a plurality of protrusions at intervals along the axial direction, the inner side of the outer core is clamped with an inner core with a through center hole opened along the axial direction, and the outer side of the inner core is provided with a plurality of grooves at intervals along the axial direction.

2. The adjustable natural gas lance for nickel smelting in a side-blown furnace according to claim 1, characterized in that: A first shoulder is provided on the inner side of the outer core, and the inner core includes an integrally formed cylindrical core and a conical core. A second shoulder matching the first shoulder is provided on the outer side of the cylindrical core close to one side of the conical core, and the end face of the first shoulder contacts the end face of the second shoulder.

3. The adjustable natural gas lance for nickel smelting in a side-blown furnace according to claim 1 or 2, characterized in that: It also includes a clamping nut, a rubber sleeve and a positioning sleeve. The rubber sleeve and the positioning sleeve are installed on the outer side of the inner tube at the inner side of the left end of the external tube. A first external thread is provided on the outer side of the left end of the external tube, and a second external thread is provided on the outer side of the inner tube corresponding to the left end of the external tube. The clamping nut is screwed on the first external thread and the second external thread in sequence from left to right.

4. The adjustable natural gas lance for nickel smelting in a side-blown furnace according to claim 1 or 2, characterized in that: It also includes a natural gas connecting pipe, through which the two-way joint and the natural gas flow control valve are fixedly connected.

5. The adjustable natural gas lance for nickel smelting in a side-blown furnace according to claim 3, characterized in that: It also includes a natural gas connecting pipe, through which the two-way joint and the natural gas flow control valve are fixedly connected.

6. The adjustable natural gas lance for nickel smelting in a side-blown furnace according to claim 1, 2 or 5, characterized in that: It also includes a compressed air connecting pipe, through which the external pipe and the compressed air flow control valve are fixedly connected.

7. The adjustable natural gas lance for nickel smelting in a side-blown furnace according to claim 3, characterized in that: It also includes a compressed air connecting pipe, through which the external pipe and the compressed air flow control valve are fixedly connected.

8. The adjustable natural gas lance for nickel smelting in a side-blown furnace according to claim 4, characterized in that: It also includes a compressed air connecting pipe, through which the external pipe and the compressed air flow control valve are fixedly connected.

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