Argon blowing device for steel refining furnace

Abstract

The utility model discloses an argon blowing device for a steel refining furnace, and relates to the technical field of steelmaking. The protection device comprises a protection box, an argon tank and a gas guide nozzle, a drawing plate is arranged on one side of the protection box, a first supporting block for placing the argon tank is fixed to the bottom of the inner side of the drawing plate, the gas outlet end of the top of the argon tank is communicated with a first electromagnetic valve and a second electromagnetic valve through two pipelines, one end of the first electromagnetic valve is communicated with a multi-way pipe, and the other end of the first electromagnetic valve is communicated with a second electromagnetic valve. The bottom of the multi-way pipe communicates with a plurality of first flow control valves through first guide pipes, the upper end of each first flow control valve communicates with an air injection pipe at the bottom of a first air brick through a pipeline, and the first air bricks are installed at the bottom of the refining furnace and distributed at the bottom of the refining furnace in an annular array mode. According to the utility model, the treatment box and the oxygen tank are arranged to dilute the discharged gas, so that the harm to the body health of workers caused by excessive argon content in the discharged gas is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the steelmaking technical field, specifically relates to a kind of argon blowing device for steel refining furnace. BACKGROUND

[0002] In the molten steel smelting process of steelmaking workshop area refining process, argon is needed to be sent to molten steel through the air brick at the bottom of ladle, to stir molten steel, make temperature and alloy composition in molten steel uniform, and promote inclusion to float, so that the effect of bending is better when stainless steel is heat treated with argon protection, and it is not easy to break;

[0003] After argon helps refining molten steel in the refining furnace, the gas pressure value in the refining furnace will change, so that the excess argon needs to be discharged regularly to avoid the situation of furnace explosion, and the discharged argon needs to be treated before being discharged, because too high argon concentration will cause safety hazard to workers, and secondly, large flow argon is needed to stir after charging in smelting process, which is beneficial to chemical reaction between steel and slag, small flow argon is used for soft blowing in later smelting stage to promote molten steel inclusion to float, and the original argon control is one pipe control for each air brick, the argon flow is controlled by adjusting valve, the operation is frequent, and the flow size is not easy to control and unstable, so the utility model is proposed. CONTENT OF UTILITY MODEL

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of prior art, and provide an argon blowing device for steel refining furnace.

[0005] To solve the above technical problems, the basic idea of the technical scheme of the utility model is as follows:

[0006] An argon blowing device for steel refining furnace, comprising a protection box, an argon tank and a gas guide nozzle, one side of the protection box is provided with a pull-out plate, a first supporting block for placing the argon tank is fixed at the inner bottom of the pull-out plate, a first electromagnetic valve and a second electromagnetic valve are communicated with the top gas outlet end of the argon tank through two pipes, a multi-way pipe is communicated with one end of the first electromagnetic valve, the bottom of the multi-way pipe is communicated with a plurality of first flow control valves through a first pipe, the upper end of each first flow control valve is communicated with the gas injection pipe at the bottom of the first air brick through a pipe, and a plurality of first air bricks are installed at the bottom of the refining furnace and arranged in a ring array at the bottom of the refining furnace;

[0007] A second air brick is installed at the middle of the inner bottom end of the refining furnace, the gas injection pipe of the second air brick is communicated with a second flow control valve through a pipe, the other end of the second flow control valve is communicated with the other end of the second electromagnetic valve through a second pipe, and a purification pipe is installed in the middle of the first pipe and the second pipe through a fixing clamp;

[0008] The second supporting block for placing the oxygen tank is fixed on one side of the refining furnace, the processing box for argon dilution is fixed on the other side of the refining furnace, the upper end of the processing box is communicated with the gas guide nozzle on the top of the refining furnace through the exhaust pipe, the third electromagnetic valve is arranged between the gas guide pipe and the exhaust pipe, the upper end of the single-way valve communicated with the upper end of the processing box through the pipeline, the fourth electromagnetic valve is communicated with the upper end of the single-way valve through the pipeline, the upper end of the fourth electromagnetic valve is communicated with the gas outlet end of the oxygen tank through the pipeline, the fifth electromagnetic valve for exhaust is communicated with the bottom of the processing box through the pipeline, the controller and the gas detector are arranged on the side of the processing box, and the detection end of the gas detector penetrates into the inside of the processing box.

[0009] Optionally, the entering pipe for molten steel entering and the discharging pipe for molten steel discharging are arranged on the upper and lower ends of the two sides of the refining furnace.

[0010] Optionally, four self-locking universal wheels are arranged on the bottom corners of the protection box in a rectangular shape, the sliding rail for the horizontal movement of the sliding block is fixed on the inside bottom end of the protection box, and the sliding block is fixedly arranged on the bottom of the first supporting block.

[0011] Optionally, the inside of the pulling plate is fixed with the guide rail for the longitudinal movement of the guide block, the side of each guide block is provided with the accommodation hole for the magic tape band to penetrate, and the guide block is fixed with the argon tank through the magic tape band.

[0012] Optionally, the bottom of the first gas permeable brick and the second gas permeable brick is fixed with the bottom of the refining furnace through the sealing plate, and the contact surface of the first gas permeable brick and the second gas permeable brick with the inner wall of the refining furnace is provided with the heat insulation piece.

[0013] Optionally, the side of each of the plurality of purification pipes is provided with the accommodation groove for the pulling of the plurality of filter plates, the inside of each purification pipe is provided with the groove for the end of the filter plate to be inserted, the middle of each filter plate is provided with the cavity for the placement of the activated carbon adsorption plate, and the upper and lower ends of the cavity are fixed with the partition plate through the mounting bolt, and the middle of each partition plate is provided with the filter screen.

[0014] Optionally, the inside of each accommodation groove is communicated with the telescopic cavity at the upper and lower ends, the inside of each telescopic cavity is movably connected with the abutting head, the abutting head and the telescopic cavity are provided with the reset spring, the end of the abutting head abuts against the side of the pulling plate, the other side of the pulling plate is abutted with the limiting block at the upper and lower ends, each limiting block is sleeved on the outside of the rotating shaft, and the rotating shaft is fixed on the side of the purification pipe through the screw.

[0015] After the above technical scheme is adopted, the present application has the following advantages compared with the prior art, of course, any product implementing the present application does not necessarily need to achieve all the advantages described below:

[0016] 1. The utility model discloses a processing box and oxygen tank are set up to the gas that discharges dilution effect, avoid the harmfulness of the argon content of the gas that discharges to the health of staff, namely third electromagnetic valve opens, gas enters the inside of processing box after guiding exhaust pipe, gas detector detects the content of argon in the gas at this moment, when the detection result is qualified, fifth electromagnetic valve opens gas discharge, when the detection result is unqualified, third electromagnetic valve and fifth electromagnetic valve close, and the gas is detained in the processing box, and then third electromagnetic valve opens, and the oxygen in oxygen tank enters the processing box and dilutes the argon in the gas, until the detection result is qualified, fourth electromagnetic valve closes, and fifth electromagnetic valve opens, and the device exhausts normally.

[0017] 2. The utility model discloses a second gas permeable brick for assisting in removing impurities in molten steel and a first gas permeable brick for assisting in stirring molten steel use separate first conduit and second conduit for gas injection, and in order to facilitate control, the middle part of the first conduit and the second conduit is provided with a first flow control valve and a second flow control valve to help workers accurately know the flow of argon added.

[0018] The specific embodiments of the utility model will be described in further detail below in combination with the drawings. DRAWINGS

[0019] The drawings in the following description are only some embodiments, and other drawings can be obtained according to the drawings without creative labor for ordinary skilled in the art. In the drawings:

[0020] Figure 1 It is the front view cross section structure schematic diagram of the utility model;

[0021] Figure 2 It is the combined part structure diagram of second conduit, purification pipe and fixing ring in the utility model;

[0022] Figure 3 It is the A part structure schematic diagram in Figure 1

[0023] It is the B part structure schematic diagram in Figure 4 Figure 1 It is the C part structure schematic diagram in

[0024] Figure 5 Figure 1 It is the D part structure schematic diagram in

[0025] Figure 6 It is the D part structure schematic diagram in Figure 2 In the drawings, the component list represented by each sign is as follows:

[0026]

[0027] ​​​1, protection box; 2, pull plate; 3, argon tank; 4, first supporting block; 5, first electromagnetic valve; 6, second electromagnetic valve; 7, multi-way pipe; 8, first conduit; 9, first flow control valve; 10, first gas permeable brick; 11, second gas permeable brick; 12, second flow control valve; 13, second conduit; 14, purification pipe; 15, oxygen tank; 16, second supporting block; 17, processing box; 18, exhaust pipe; 19, gas guide nozzle; 20, third electromagnetic valve; 21, check valve; 22, fourth electromagnetic valve; 23, fifth electromagnetic valve; 24, controller; 25, gas detector; 26, inlet pipe; 27, outlet pipe; 28, self-locking universal wheel; 29, sliding block; 30, sliding rail; 31, guide block; 32, guide rail; 33, magic tape bandage; 34, sealing plate; 35, heat insulation piece; 36, filter plate; 37, activated carbon adsorption plate; 38, mounting bolt; 39, filter screen; 40, abutting head; 41, return spring; 42, limiting block; 43, rotating shaft.

[0028] It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0029] The present application will now be further described in detail with reference to the accompanying drawings.

[0030] Please refer to Figures 1 to 6 The present application provides a technical solution: an argon blowing device for a steel refining furnace, comprising a protection box 1, an argon tank 3 and a gas guide nozzle 19, one side of the protection box 1 is provided with a pull plate 2, a first supporting block 4 for placing the argon tank 3 is fixed to the inner bottom of the pull plate 2, a first electromagnetic valve 5 and a second electromagnetic valve 6 are communicated with the top gas outlet end of the argon tank 3 through two pipes, one end of the first electromagnetic valve 5 is communicated with a multi-way pipe 7, the bottom of the multi-way pipe 7 is communicated with a plurality of first flow control valves 9 through a first conduit 8, the upper end of each first flow control valve 9 is communicated with a gas injection pipe at the bottom of a first gas permeable brick 10 through a pipe, a plurality of first gas permeable bricks 10 are respectively installed at the bottom of the refining furnace and are arranged in a ring array at the bottom of the refining furnace;

[0031] A second gas permeable brick 11 is installed at the middle of the inner bottom end of the refining furnace, the gas injection pipe of the second gas permeable brick 11 is communicated with a second flow control valve 12 through a pipe, the other end of the second flow control valve 12 is communicated with the other end of the second electromagnetic valve 6 through a second conduit 13, a purification pipe 14 is installed at the middle of the first conduit 8 and the second conduit 13 through a fixing clamp;

[0032] The second supporting block 16 for placing the oxygen tank 15 is fixed on one side of the refining furnace, the processing box 17 for argon dilution is fixed on the other side of the refining furnace, the upper end of the processing box 17 is communicated with the gas guide nozzle 19 on the top of the refining furnace through the exhaust pipe 18, the third electromagnetic valve 20 is arranged between the gas guide pipe and the exhaust pipe 18, the upper end of the one-way valve 21 is communicated with the fourth electromagnetic valve 22 through the pipeline, the upper end of the fourth electromagnetic valve 22 is communicated with the gas outlet end of the oxygen tank 15 through the pipeline, the bottom of the processing box 17 is communicated with the fifth electromagnetic valve 23 for exhaust through the pipeline, the controller 24 and the gas detector 25 are arranged on the side of the processing box 17 respectively, the detection end of the gas detector 25 penetrates into the inside of the processing box 17, considering that the argon helps to refine the molten steel in the refining furnace, which causes the change of the gas pressure value in the refining furnace, in order to avoid the explosion of the furnace, it is necessary to regularly discharge the excessive argon, because the high argon concentration will cause the safety hazard to the workers, therefore, the discharged argon needs to be treated before being discharged, the processing box 17 and the oxygen tank 15 are arranged, which plays a dilution role on the discharged gas, the harm of the excessive argon content in the discharged gas to the health of the workers is avoided, that is, the third electromagnetic valve 20 is opened, the gas enters the inside of the processing box 17 after being guided to the exhaust pipe 18, at this time, the gas detector 25 detects the argon content in the gas, when the detection result is qualified, the fifth electromagnetic valve 23 is opened to discharge the gas, when the detection result is unqualified, the third electromagnetic valve 20 and the fifth electromagnetic valve 23 are closed, the gas is retained in the processing box 17, then the third electromagnetic valve 20 is opened, the oxygen in the oxygen tank 15 enters the processing box 17 to dilute the argon in the gas, until the detection result is qualified, the fourth electromagnetic valve 22 is closed, the fifth electromagnetic valve 23 is opened, the device is normally exhausted, secondly, in the smelting process, after the material is added, the large flow argon stirring is needed to facilitate the chemical reaction between the steel and the slag, the small flow argon soft blowing is used in the later smelting stage to promote the floating of the molten steel inclusions, the original argon control is one pipeline control for each gas permeable brick, the argon flow is controlled through the adjusting valve, the operation is frequent and the flow size is not easy to control and is unstable, the second gas permeable brick 11 for assisting the removal of impurities in the molten steel and the first gas permeable brick 10 for assisting the stirring of the molten steel adopt the separate first conduit 8 and the second conduit 13 for gas injection, and in order to facilitate the control, the first flow control valve 9 and the second flow control valve 12 are arranged in the middle of the first conduit 8 and the second conduit 13 to help the workers to accurately know the flow of the added argon.

[0033] The entering pipe 26 for molten steel entering and the discharging pipe 27 for molten steel discharging are arranged on the upper and lower ends of the two sides of the refining furnace respectively, the discharging pipe 27 and the entering pipe 26 are arranged, so that the molten steel for processing and purification is conveniently arranged into the inside of the refining furnace.

[0034] The bottom four corners of the protection box 1 are rectangularly provided with four self-locking universal wheels 28, the inner bottom end of the protection box 1 is fixedly provided with a sliding rail 30 for horizontal movement of a sliding block 29, the sliding block 29 is fixedly installed at the bottom of the first supporting block 4, the self-locking universal wheels 28 are arranged to facilitate the user to move the protection box 1, so as to adjust the placement position of the argon tank 3, the sliding block 29 is arranged to guide the movement of the first supporting block 4, and the argon tank 3 can be smoothly pulled out of the protection box 1.

[0035] The inner side of the pull-out plate 2 is fixedly provided with a guide rail 32 for longitudinal movement of a guide block 31, each side of the guide block 31 is provided with a clearance hole for the magic tape band 33 to penetrate, and the guide block 31 is fixed to the argon tank 3 through the magic tape band 33, the magic tape band 33 is arranged to assist the fixing of the bottle body of the argon tank 3, and the situation that the argon tank 3 is tilted due to too fast pulling is prevented.

[0036] The bottom of the first gas permeable brick 10 and the second gas permeable brick 11 is fixed to the bottom of the refining furnace through a sealing plate 34, and the contact surface between the first gas permeable brick 10 and the second gas permeable brick 11 and the inner wall of the refining furnace is provided with a heat insulating piece 35.

[0037] The side of the plurality of purification pipes 14 is provided with a plurality of accommodation grooves for pulling out a plurality of filter plates 36, the inner side of each purification pipe 14 is provided with a groove for inserting the end of the filter plate 36, the middle of each filter plate 36 is provided with a cavity for placing an activated carbon adsorption plate 37, and the upper and lower ends of the cavity are fixedly provided with a partition plate through a mounting bolt 38, and each partition plate is provided with a filter screen 39, the purification pipe 14 is arranged to filter and purify the argon gas injected into the refining furnace, that is, during the injection of the argon gas, the impurities in the gas are filtered by the plurality of filter plates 36, and the particulate matter contained in the argon gas is filtered by the filter screen 39 in cooperation with the activated carbon adsorption plate 37.

[0038] The inner upper and lower ends of each accommodation groove are communicated with an expansion cavity, a contact head 40 is movably connected in each expansion cavity, a return spring 41 is arranged between the contact head 40 and the expansion cavity, the end of the contact head 40 abuts against the side of the pull-out plate 2, the other side of the pull-out plate 2 is abutted against a limiting block 42, each limiting block 42 is sleeved on the outer side of a rotating shaft 43, and the rotating shaft 43 is fixedly arranged on the side of the purification pipe 14 through a screw, considering that the filter screen 39 and the activated carbon adsorption plate 37 will be blocked with the increase of the use time, which will affect the filtering effect, therefore, the filter plate 36 needs to be replaced regularly, in order to facilitate the workers to replace, the filter plate 36 adopts a quick release structure, that is, when the limiting block 42 is rotated to abut against the side end of the filter plate 36, the contact head 40 pushes the filter plate 36 out of the accommodation groove, and the filter plate 36 can be disassembled.

[0039] The utility model is not limited to the above-mentioned embodiment, any person should know the structural change made under the enlightenment of the utility model, any technical scheme with the same or similar utility model falls into the protection scope of the utility model. The utility model does not describe the technology, shape, structure part in detail, which is the known technology.

Claims

1. An argon blowing device for a steel refining furnace, comprising a shield box (1), an argon tank (3) and a gas guide nozzle (19), characterized in that, One side of the protection box (1) is provided with a pull-out plate (2), a first supporting block (4) for placing an argon tank (3) is fixed to the inner bottom of the pull-out plate (2), the top gas outlet end of the argon tank (3) is communicated with a first electromagnetic valve (5) and a second electromagnetic valve (6) through two pipelines, one end of the first electromagnetic valve (5) is communicated with a multi-way pipe (7), the bottom of the multi-way pipe (7) is communicated with a plurality of first flow control valves (9) through a first pipeline (8), the upper end of each first flow control valve (9) is communicated with a gas injection pipe at the bottom of a first gas permeation brick (10) through a pipeline, a plurality of first gas permeation bricks (10) are respectively installed at the bottom of the refining furnace and are arranged in an annular array at the bottom of the refining furnace; A second gas permeation brick (11) is installed at the middle of the inner bottom end of the refining furnace, the gas injection pipe of the second gas permeation brick (11) is communicated with a second flow control valve (12) through a pipeline, the other end of the second flow control valve (12) is communicated with the other end of the second electromagnetic valve (6) through a second pipeline (13), a purification pipe (14) is installed in the middle of the first pipeline (8) and the second pipeline (13) through a fixing clamp; One side of the refining furnace is fixed with a second supporting block (16) for placing an oxygen tank (15), the other side of the refining furnace is fixed with a treatment box (17) for argon dilution, the upper end of the treatment box (17) is communicated with a gas guide nozzle (19) at the top of the refining furnace through an exhaust pipe (18), a third electromagnetic valve (20) is arranged between the gas guide pipe and the exhaust pipe (18), the upper end of the other side of the treatment box (17) is communicated with a one-way valve (21) through a pipeline, the upper end of the one-way valve (21) is communicated with a fourth electromagnetic valve (22) through a pipeline, the upper end of the fourth electromagnetic valve (22) is communicated with the gas outlet end of the oxygen tank (15) through a pipeline, the bottom of the treatment box (17) is communicated with a fifth electromagnetic valve (23) for exhaust through a pipeline, one side of the treatment box (17) is respectively provided with a controller (24) and a gas detector (25), the detection end of the gas detector (25) penetrates into the inside of the treatment box (17).

2. The argon blowing device for a steel refining furnace according to claim 1, wherein The upper and lower ends of the two sides of the refining furnace are respectively provided with an inlet pipe (26) for molten steel inlet and an outlet pipe (27) for molten steel outlet.

3. The argon blowing device for a steel refining furnace according to claim 1, wherein Four self-locking universal wheels (28) are installed at the bottom four corners of the protection box (1) in a rectangular shape, a slide rail (30) for horizontal movement of a sliding block (29) is fixed to the inner bottom end of the protection box (1), and the sliding block (29) is fixedly installed at the bottom of the first supporting block (4).

4. The argon blowing device for a steel refining furnace according to claim 1, wherein The inner side of the pull-out plate (2) is fixed with a guide rail (32) for longitudinal movement of a guide block (31), a side of each guide block (31) is provided with a clearance hole for penetration of a magic tape band (33), and the guide block (31) is fixed with the argon tank (3) through the magic tape band (33).

5. The argon blowing device for a steel refining furnace according to claim 1, wherein The bottom of the first gas permeation brick (10) and the second gas permeation brick (11) is fixed with the bottom of the refining furnace through a sealing plate (34), and the contact surface of the first gas permeation brick (10) and the second gas permeation brick (11) with the inner wall of the refining furnace is provided with a heat insulating piece (35).

6. The argon blowing device for a steel refining furnace according to claim 1, wherein The side of the plurality of purification pipes (14) is provided with a plurality of filter plates (36) pulling accommodation grooves, the inner side of each purification pipe (14) is provided with a filter plate (36) end insertion groove, the middle of each filter plate (36) is provided with an active carbon adsorption plate (37) cavity, and the upper and lower ends of the cavity are fixed with a partition plate through a mounting bolt (38), and the middle of each partition plate is provided with a filter screen (39).

7. The argon blowing device for a steel refining furnace according to claim 6, wherein The upper and lower ends of the inside of each accommodation groove are communicated with an expansion cavity, a contact head (40) is movably connected in each expansion cavity, a reset spring (41) is arranged between the contact head (40) and the expansion cavity, and the end of the contact head (40) is in contact with the side of the pull-out plate (2), the other side of the pull-out plate (2) is in contact with a limiting block (42) at the upper and lower ends, each limiting block (42) is sleeved on the outside of a rotating shaft (43), and the rotating shaft (43) is fixed on the side of the purification pipe (14) through a screw.

Images