Furnace bottom oxygen supply equipment for steelmaking

Abstract

The invention relates to furnace bottom oxygen supply equipment for steelmaking, and belongs to the technical field of steelmaking equipment. According to the technical scheme, an oxygen supply tank (2) is connected with a standby tank (3); the pressure gauge (1) is arranged on the outer wall of one side of the oxygen supply tank (2), the compressor (4) is fixedly installed on one side of the oxygen supply tank (2) and one side of the standby tank (3), the air guide mechanism (6) is arranged on one side of the oxygen supply tank (2), the sealing mechanism (7) is arranged on one side of the air guide mechanism (6), the telescopic assembly (8) is movably installed on one side of the sealing mechanism (7), and the air outlet assembly (9) is arranged at one end of the telescopic assembly (8). The working area can be rapidly changed, the length of the oxygen supply pipe can be adjusted according to the use requirement during use, and rapid positioning and sealing treatment of the oxygen supply pipe can be achieved after adjustment.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of oxygen supply equipment for furnace bottom for steelmaking, belong to steelmaking equipment technical field. BACKGROUND

[0002] Steelmaking is a production process that removes impurities in molten iron, adjusts its composition and performance to obtain molten steel that meets the requirements. This process mainly involves reducing the content of impurities such as silicon, manganese, phosphorus, sulfur and other elements in molten iron with high carbon content to a certain range, while adding appropriate amount of alloying elements according to requirements to improve the performance of steel and make it become high-quality steel material with specific purpose. During the steelmaking process, oxygen needs to be supplied to the steelmaking furnace, which requires the use of oxygen supply equipment.

[0003] Chinese patent (CN106011367A) discloses a kind of oxygen lance nozzle for converter steelmaking, its technical scheme is: high-pressure oxygen flow enters through oxygen inlet pipe, and oxygen is dispersed by oxygen shunt head to oxygen injection hole, and oxygen flow is accelerated and cooled by Laval nozzle; At the same time, cooling water also enters from water inlet pipe, and cooling water is reasonably guided to the end of the nozzle by the action of upper water distribution cone, and the cooling water at the end is guided to water outlet pipe by the action of lower water distribution cone and water distribution wedge, and then flows out through water outlet pipe; Upper and lower water distribution cones, water guide plate and water distribution wedge make the flow line of cooling water reasonable, greatly reduce the "dead zone" of cooling water, and greatly improve the cooling effect of the end. Although the oxygen supply equipment of the present application can achieve the purpose of oxygen supply, it does not have an internal cleaning structure, and some oxygen production impurities may remain on the inner wall after the oxygen injection structure is used for a period of time, which affects the smoothness of oxygen supply. At the same time, it cannot realize the rapid distribution of oxygen, and the actual application effect is not good. SUMMARY

[0004] The present application aims to provide a kind of oxygen supply equipment for furnace bottom for steelmaking, by supporting set telescopic component and sealing mechanism, equipment whole body is convenient to move, can quickly change work area, and when using, the length of oxygen supply pipe can be adjusted according to use requirements, after adjusting, it can realize the quick positioning and sealing treatment of oxygen supply pipe, greatly improve the application effect of whole equipment, effectively solve the above problems existing in background art.

[0005] The technical scheme of the present application is: a kind of oxygen supply equipment for steelmaking furnace bottom, the bottom of the base is provided with movable wheel, the top surface of base is fixedly installed with oxygen supply tank and spare tank by bottom foot respectively, oxygen supply tank and spare tank are connected by connecting pipe;Pressure gauge is arranged on the side outer wall of oxygen supply tank, compressor is fixedly installed on the side of oxygen supply tank and spare tank, gas guide mechanism is arranged on the side of oxygen supply tank, sealing mechanism is arranged on the side of gas guide mechanism, telescopic assembly is movably installed on the side of sealing mechanism, and gas outlet assembly is arranged at one end of telescopic assembly.

[0006] The gas guide mechanism includes a gas guide pipe fixedly installed in the gas hole provided on the side wall of the oxygen supply tank, an impurity collection box fixedly installed on the bottom surface of the gas guide pipe, a cleaning port provided on the inner wall of the bottom surface of the gas guide pipe, and an internal cleaning assembly provided in the gas guide pipe.

[0007] The internal cleaning assembly includes a mounting cylinder frame fixedly installed in the gas guide pipe, a threaded rotating cylinder rotatably installed in the internal mounting cylinder frame, a mounting shell fixedly installed on the outer surface of the threaded rotating cylinder, a telescopic scraper movably installed in the internal mounting shell by an internal spring, and the telescopic scraper is in contact with and pressed against the inner surface of the gas guide pipe at one end.

[0008] The sealing mechanism includes a sealing box fixedly installed at one end of the gas guide pipe, a gas guide channel provided in the internal sealing box, and two stroke grooves provided on the outer wall of the sealing box.

[0009] An adjusting sealing assembly is arranged in the stroke groove, the adjusting sealing assembly includes an adjusting stud rotatably installed in a rotating hole provided on the top of the sealing box, and a threaded block threadedly installed on the outer surface of the adjusting stud.

[0010] The threaded block is threadedly installed on the inner side of the stroke groove, an installation ring is fixedly installed at one end of the threaded block, a sealing gasket is provided on the inner wall of the installation ring, and the internal sealing gasket is filled with thermal expansion particles.

[0011] The telescopic assembly includes an air outlet pipe slidably installed in the internal gas guide channel, a anti-dropping ring provided on the outer surface of one end of the air outlet pipe, and a side stud transversely fixedly installed in the internal air outlet pipe by a mounting bracket.

[0012] One end of the side stud is threadedly connected with a threaded hole provided in the internal threaded rotating cylinder, the other end of the air outlet pipe is fixedly installed with a connecting air pipe, and the outer surface of the sealing gasket is in close contact with the outer surface of the air outlet pipe.

[0013] The gas outlet assembly includes a gas collection cover fixedly connected with the connecting air pipe through a side hole provided on one side of the gas collection cover, and a gas speed increasing volute fixedly installed in the internal gas collection cover.

[0014] The bottom cover is fixedly installed at the bottom of the gas collecting cover, a side pipe is rotatably installed on the outer wall of one side of the gas collecting cover, a jet disc is fixedly installed at one end of the side pipe, and a jet nozzle is fixedly installed on the outer surface of the jet disc.

[0015] The beneficial effects of the present application are: by matching the telescopic assembly and the sealing mechanism, the device is convenient to move as a whole, can quickly change the working area, and when in use, the length of the oxygen supply pipe can be adjusted according to the use requirement, and after adjustment, the oxygen supply pipe can be quickly positioned and sealed, greatly improving the application effect of the whole device. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective structural schematic diagram of the present application; Figure 2 is a perspective structural schematic diagram of the present application from another angle; Figure 3 is an exploded perspective structural schematic diagram of the present application; Figure 4 is an exploded perspective structural schematic diagram of the gas guiding mechanism of the present application; Figure 5 is an exploded perspective structural schematic diagram of the sealing mechanism of the present application; Figure 6 is an exploded perspective structural schematic diagram of the telescopic assembly and the gas outlet assembly of the present application; Figure 7 is an exploded perspective structural schematic diagram of the gas outlet assembly of the present application; Figure 8 is a perspective structural schematic diagram of the adjustment sealing assembly of the present application; In the figure: pressure gauge 1, oxygen supply tank 2, standby tank 3, compressor 4, base 5, gas guiding mechanism 6, gas guiding pipe 61, impurity collecting box 62, built-in cleaning assembly 63, telescopic scraper plate 631, mounting shell 632, threaded rotating cylinder 633, mounting cylinder frame 634, cleaning port 64, sealing mechanism 7, sealing box 71, stroke groove 72, gas guiding channel 73, adjustment sealing assembly 74, adjustment stud 741, threaded block 742, mounting ring 743, sealing gasket 744, telescopic assembly 8, gas outlet pipe 81, side stud 82, anti-dropping ring 83, connecting gas pipe 84, gas outlet assembly 9, gas collecting cover 91, side pipe 92, jet nozzle 93, jet disc 94, gas speed increasing volute 95, bottom cover 96, bottom foot 10, movable wheel 11. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the application examples clearer, the technical scheme in the application examples will be clearly and completely described below in combination with the drawings in the application examples. Obviously, the described application examples are only a part of the application examples, rather than all the application examples. Based on the application examples in the application, all other application examples obtained by those of ordinary skill in the art without creative labor fall within the protection scope of the application.

[0018] A furnace bottom oxygen supply device for steelmaking comprises a base 5, the bottom of the base 5 is provided with a movable wheel 11, an oxygen supply tank 2 and a standby tank 3 are fixedly installed on the top surface of the base 5 through a bottom foot 10, the oxygen supply tank 2 and the standby tank 3 are connected through a connecting pipe; a pressure gauge 1 is arranged on the outer wall of one side of the oxygen supply tank 2, a compressor 4 is fixedly installed on one side of the oxygen supply tank 2 and the standby tank 3, a gas guiding mechanism 6 is arranged on one side of the oxygen supply tank 2, a sealing mechanism 7 is arranged on one side of the gas guiding mechanism 6, a telescopic assembly 8 is movably installed on one side of the sealing mechanism 7, and an air outlet assembly 9 is arranged at one end of the telescopic assembly 8.

[0019] The gas guiding mechanism 6 comprises a gas guiding pipe 61, the gas guiding pipe 61 is fixedly installed in a gas hole arranged on the side wall of the oxygen supply tank 2, an impurity collecting box 62 is fixedly installed on the bottom surface of the gas guiding pipe 61, a cleaning opening 64 is arranged on the inner wall of the bottom surface of the gas guiding pipe 61, and an internal cleaning assembly 63 is arranged in the gas guiding pipe 61.

[0020] The internal cleaning assembly 63 comprises a mounting cylinder frame 634, the mounting cylinder frame 634 is fixedly installed in the gas guiding pipe 61, a threaded rotating cylinder 633 is rotatably installed in the mounting cylinder frame 634, a mounting shell 632 is fixedly installed on the outer surface of the threaded rotating cylinder 633, a telescopic scraper 631 is movably installed in the mounting shell 632 through an internal spring, and one end of the telescopic scraper 631 is in contact with and pressed against the inner surface of the gas guiding pipe 61.

[0021] The sealing mechanism 7 comprises a sealing box 71, the sealing box 71 is fixedly installed at one end of the gas guiding pipe 61, a gas guiding channel 73 is arranged in the sealing box 71, and two stroke grooves 72 are arranged on the outer wall of one side of the sealing box 71.

[0022] An adjusting sealing assembly 74 is arranged in the stroke groove 72, the adjusting sealing assembly 74 comprises an adjusting stud 741, the adjusting stud 741 is rotatably installed in a rotating hole arranged at the top of the sealing box 71, and a threaded block 742 is threadedly installed on the outer part of the adjusting stud 741.

[0023] The threaded block 742 is threadedly installed on the inner side of the stroke groove 72, an installation ring 743 is fixedly installed at one end of the threaded block 742, a sealing gasket 744 is arranged on the inner wall of the installation ring 743, and the inside of the sealing gasket 744 is filled with thermal expansion particles.

[0024] The telescopic assembly 8 comprises an air outlet pipe 81 which is slidingly installed inside the air guide channel 73, and the outer end of the air outlet pipe 81 is provided with an anti-off ring 83, and the inner end of the air outlet pipe 81 is transversely fixedly installed with a side stud 82 through a mounting bracket.

[0025] The inner end of the side stud 82 is threadedly connected with a threaded hole provided in the inside of the threaded drum 633, and the other end of the air outlet pipe 81 is fixedly installed with a connecting air pipe 84, and the outer surface of the sealing gasket 744 is in close contact with the outer surface of the air outlet pipe 81.

[0026] The telescopic assembly 8 comprises an air outlet pipe 81 which is slidingly installed inside the air guide channel 73, and the outer end of the air outlet pipe 81 is provided with an anti-off ring 83, and the inner end of the air outlet pipe 81 is transversely fixedly installed with a side stud 82 through a mounting bracket.

[0027] The bottom of the air collecting cover 91 is fixedly installed with a bottom cover 96, the outer wall of one side of the air collecting cover 91 is rotatably installed with a side pipe 92, the inner end of the side pipe 92 is fixedly installed with a gas jet disc 94, and the outer surface of the gas jet disc 94 is fixedly installed with a gas jet nozzle 93.

[0028] During use of the device, the device can be moved to the use area by controlling the movable wheel 11, and according to the use requirement, the air outlet pipe 81 is pulled to the appropriate length, and after adjustment, the two adjusting studs 741 are directly rotated to drive the two threaded blocks 742 to approach at the same time, and drive the two mounting rings 743 to approach at the same time, until the sealing gasket 744 is in close contact with the outer surface of the air outlet pipe 81, so that the positioning and sealing of the air outlet pipe 81 are realized, and since the device is near the steelmaking area, the temperature is high, and a large number of heat expansion particles filled in the sealing gasket 744 will expand when heated, so that the sealing gasket 744 stably expands, further improving the firmness of the contact with the air outlet pipe 81 and improving the sealing effect; During each adjustment of the telescopic assembly 8, the side stud 82 can be pulled to be synchronously displaced, and since the inner end of the side stud 82 is threadedly connected with the threaded hole provided in the inside of the threaded drum 633, the telescopic scraper 631, the mounting shell 632 and the threaded drum 633 can be driven to rotate, and the telescopic scraper 631 can scrape the inner surface of the air guide pipe 61 when rotating, so that some oxygen production impurities remaining on the inner surface of the air guide pipe 61 are hung and fall into the impurity collecting box 62, and the impurity collecting box 62 can be opened regularly for cleaning; When oxygen is discharged, oxygen can enter the gas outlet assembly 9 through the connecting pipe 84, and the oxygen can first enter the gas speed-up volute 95 to speed up, and the speeded-up oxygen can be conducted to the jet disc 94, and finally sprayed out through the jet nozzle 93. Due to the different positions of the jet nozzle 93, when the jet nozzle 93 sprays, the jet disc 94 will be subjected to uneven air flow thrust, thereby causing rotation. The high-speed oxygen can be sprayed out through the rotating jet disc 94, which can make it quickly diffuse in the steelmaking furnace, thereby ensuring the steelmaking effect.

[0029] The present application is provided with a telescopic assembly and a sealing mechanism, which can move the equipment as a whole, quickly change the working area, and adjust the length of the oxygen supply pipe according to the use requirements during use, and after adjustment, the oxygen supply pipe can be quickly positioned and sealed, greatly improving the application effect of the whole equipment; the gas guide mechanism is provided, which can clean the inner wall of the nearest oxygen supply pipe during length adjustment, avoiding the continuous residue of impurities affecting the oxygen supply effect of the equipment; the gas outlet assembly is provided, which can automatically increase the flow rate of oxygen during oxygen supply, and can automatically drive the jet disc to rotate, thereby greatly improving the diffusion and propagation effect of oxygen and improving the overall application effect of the equipment.

[0030] The above is only the preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A furnace bottom oxygen supply equipment for steelmaking, characterized in that: The utility model provides an oxygen supply device, including base (5), the bottom of base (5) is provided with movable wheel (11), the top surface of base (5) is fixedly installed with spare tank (3) and oxygen supply tank (2) respectively through bottom foot (10), and oxygen supply tank (2) and spare tank (3) are connected through connecting pipe, the outer wall of one side of oxygen supply tank (2) is provided with pressure gauge (1), and one side of oxygen supply tank (2) and spare tank (3) is fixedly installed with compressor (4), one side of oxygen supply tank (2) is provided with air guide mechanism (6), one side of air guide mechanism (6) is provided with sealing mechanism (7), one side of sealing mechanism (7) is movably installed with telescopic subassembly (8), and one end of telescopic subassembly (8) is provided with air outlet subassembly (9).

2. A bottom oxygen supply apparatus for a steelmaking furnace according to claim 1, characterized in that: The air guide mechanism (6) includes a gas guide pipe (61) fixedly installed in a gas hole provided on the side wall of the oxygen supply tank (2), an impurity collection box (62) fixedly installed on the bottom surface of the gas guide pipe (61), a cleaning opening (64) provided on the inner wall of the bottom surface of the gas guide pipe (61), and an internal cleaning assembly (63) provided in the gas guide pipe (61).

3. A bottom oxygen supply apparatus for a steelmaking furnace according to claim 2, characterized in that: The internal cleaning assembly (63) includes a mounting cylinder frame (634) fixedly installed in the gas guide pipe (61), a threaded rotating cylinder (633) rotatably installed in the mounting cylinder frame (634), a mounting shell (632) fixedly installed on the outer surface of the threaded rotating cylinder (633), a telescopic scraper (631) movably installed in the mounting shell (632) through an internal spring, and one end of the telescopic scraper (631) in contact with and pressed against the inner surface of the gas guide pipe (61).

4. The oxygen supply apparatus for a furnace bottom of a steelmaking furnace according to claim 2, characterized by: The sealing mechanism (7) includes a sealing box (71) fixedly installed at one end of the gas guide pipe (61), an air guide channel (73) provided in the sealing box (71), and two stroke grooves (72) provided on the outer wall of one side of the sealing box (71).

5. A bottom oxygen supply apparatus for a steelmaking furnace according to claim 4, characterized in that: An adjusting sealing assembly (74) is arranged in the stroke groove (72), and the adjusting sealing assembly (74) includes an adjusting stud (741) rotatably installed in a rotating hole provided at the top of the sealing box (71) and a threaded block (742) threadedly installed on the outer surface of the adjusting stud (741).

6. A bottom oxygen supply apparatus for a steelmaking furnace according to claim 5, characterized in that: The threaded block (742) is threadedly installed on the inner side of the stroke groove (72), one end of the threaded block (742) is fixedly installed with a mounting ring (743), a sealing gasket (744) is provided on the inner wall of the mounting ring (743), and the sealing gasket (744) is filled with thermal expansion particles in the inside.

7. The oxygen supply apparatus for a furnace bottom of a steelmaking furnace according to claim 4, characterized by: The telescopic subassembly (8) includes an air outlet pipe (81) slidably installed in the air guide channel (73), a anti-dropping ring (83) provided on the outer end of the air outlet pipe (81), a side stud (82) transversely fixedly installed on the inner end of the air outlet pipe (81) through a mounting frame, and the side stud (82) is threadedly connected with a threaded hole provided in the inside of the threaded rotating cylinder (633).

8. The oxygen supply apparatus for a furnace bottom of a steelmaking furnace according to claim 7, characterized by: The other end of the air outlet pipe (81) is fixedly installed with a connecting air pipe (84), and the outer surface of the sealing gasket (744) is in close contact with the outer surface of the air outlet pipe (81).

9. The oxygen supply apparatus for a furnace bottom of a steelmaking furnace according to claim 8, characterized by: The air outlet assembly (9) comprises a gas collecting cover (91) fixedly connected with the connecting air pipe (84) through a side hole arranged on one side of the gas collecting cover (91), and a gas accelerating volute (95) fixedly installed in the gas collecting cover (91).

10. The oxygen supply apparatus for a furnace bottom of a steelmaking furnace according to claim 9, characterized by: A bottom cover (96) is fixedly installed on the bottom of the gas collecting cover (91), a side pipe (92) is rotatably installed on the outer wall of one side of the gas collecting cover (91), one end of the side pipe (92) is fixedly installed with a gas jet disc (94), and the outer surface of the gas jet disc (94) is fixedly installed with a gas jet nozzle (93).

Images