Steel continuous casting refining device

Abstract

The utility model discloses a steel continuous casting refining device, and relates to the technical field of induction furnaces. The device comprises an induction furnace, an exhaust pipe, a pre-filtering box and a secondary filtering box, a cavity for placing an induction coil is arranged in the wall body of the induction furnace, a feeding pipe for feeding molten steel is arranged at the upper end of one side of the induction furnace, and a discharging pipe for discharging the molten steel is arranged at the lower end of the other side of the induction furnace. One side of the upper end of the induction furnace is connected with a barometer through a pipeline, an exhaust pipe is mounted at the top of the induction furnace, and the other end of the exhaust pipe is communicated with a pre-filtering box; a first inserting block and a second inserting block are installed at the upper end of the pre-filtering box, and a partition plate used for separating the first inserting block and the second inserting block is arranged in the pre-filtering box. Smoke generated in the steel refining process is fully filtered through mutual cooperation of the pre-filtering box and the secondary filtering box; and a large amount of flue gas is effectively prevented from escaping into a working environment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to induction furnace technical field, concretely relates to a steel continuous casting refining device. BACKGROUND

[0002] Induction furnace is the electric furnace that material's induction electric heating effect is utilized to heat or melt material, induction furnace adopts alternating current power supply has 3 kinds of power frequency, intermediate frequency and high frequency, under the action of alternating electromagnetic field in induction furnace, material interior produces eddy current thereby reaches the effect of heating or melting.

[0003] But the existing induction furnace can not carry out the treatment to the flue gas generated by material heating in the process of using, and a large amount of flue gas is easy to lead to pollution when freely escaping, and the utility model is provided in view of this. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to overcome the defects of prior art, and provide a steel continuous casting refining device.

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

[0006] A steel continuous casting refining device, including induction furnace, exhaust pipe, pre-filtering box and secondary filtering box, the wall body inside induction furnace is equipped with the cavity that supplies induction coil to place, is equipped with the feed pipe that supplies molten steel feeding on the side upper end of induction furnace, is equipped with the discharge pipe that supplies molten steel discharge on the other side lower end of induction furnace, the upper end of induction furnace is connected with barometer through pipeline on one side, is installed on the top of induction furnace and is communicated with pre-filtering box on the other end of exhaust pipe;

[0007] The upper end of pre-filtering box is installed with first plug-in block and second plug-in block respectively, is equipped with the baffle for separating first plug-in block and second plug-in block in the inside of pre-filtering box, the middle part of first plug-in block is penetrated and is equipped with a plurality of gas permeation holes and gas permeation grooves, the inside of each gas permeation hole is equipped with filter screen, the inside of each gas permeation groove is equipped with air filter plate, the middle part of baffle is equipped with the through hole for air circulation, the inside of second plug-in block is equipped with the cavity for placing activated carbon adsorption block, is equipped with the flow hole for gas import and export on both sides of cavity, the other side of pre-filtering box is communicated with the negative pressure end of negative pressure pump through negative pressure pipe, and the upper end of negative pressure pump is penetrated to the inside of secondary filtering box through the catheter;

[0008] The inside of secondary filtering box is placed with gas washing liquid.

[0009] Optionally, the upper end of pre-filtering box is respectively equipped with the groove for installing first plug-in block and second plug-in block, and the groove for installing second plug-in block and the upper end of second plug-in block are respectively equipped with screw hole for screwing in.

[0010] Optionally, the groove for installing the first plug-in block is internally provided with a mounting hole for movably connecting the abutting block, and a spring for resetting the abutting block is arranged in each mounting hole, and the upper end of the first plug-in block is abutted by a limiting sleeve, and the limiting sleeve is sleeved on the outside of the column body, and a anti-loosening bolt is threadedly connected to the top of each column body.

[0011] Optionally, the top of the secondary filtering box is communicated with a discharge pipe for discharging gas, a first electromagnetic valve is arranged in the middle of the discharge pipe, the bottom of the secondary filtering box is communicated with a second electromagnetic valve through a pipeline, the outside of the secondary filtering box is communicated with a third electromagnetic valve through a pipeline, and a transparent plate is mounted on the front end of the secondary filtering box through a fixing bolt.

[0012] Optionally, the side of the discharge pipe is provided with a detection box mounted through a screw, and an air quality sensor is mounted on the bottom of the insertion end of the detection box, and the air quality sensor is connected with a backup power supply in the insertion end of the detection box through a wire, and the backup power supply is connected with a power supplement interface at the outer end of the detection box through a wire.

[0013] Optionally, the bottom end of the induction furnace is provided with a plurality of gas permeable bricks for conveying gas, the bottom of each gas permeable brick is fixedly provided with a sealing plate, the sealing plate is fixed to the bottom of the induction furnace, the middle of the gas permeable brick penetrates the sealing plate through a gas injection pipe and is connected with a fourth electromagnetic valve, the other end of the fourth electromagnetic valve is communicated with a gas supply pipe, and a high-temperature-resistant sealing element is arranged on the contact surface between the lower end of the gas permeable brick and the bottom of the induction furnace.

[0014] 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:

[0015] The present application plays a full filtering role in the smoke generated in the steel refining process through the cooperation of the pre-filtering box and the secondary filtering box, and effectively avoids the escape of a large amount of smoke into the working environment, that is, the smoke generated in the refining process first enters the pre-filtering box through the negative pressure provided by the negative pressure pump, and the gas is preliminarily filtered by the multiple layers of filter screens and the air filter plate in the first plug-in block during the process of being introduced from the pre-filtering box into the secondary filtering box, and then the gas enters the second plug-in block through the partition plate and is secondarily filtered by the activated carbon adsorption block, and finally the gas is transported into the secondary filtering box by the negative pressure pump, and after being treated by the gas washing liquid in the secondary filtering box, the gas is finally discharged through the discharge pipe.

[0016] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings. In the drawings:

[0018] Figure 1 It is a schematic view of the front view cross-section structure of the utility model;

[0019] Figure 2 It is a schematic view of the combined part structure of the exhaust pipe, the pre-filtering box, the first plug-in block and the second plug-in block in the utility model;

[0020] Figure 3 It is a schematic view of the A part structure in Figure 1

[0021] Figure 4 It is a schematic view of the B part structure in Figure 1

[0022] Figure 5 It is a schematic view of the C part structure in Figure 1

[0023] Figure 6 It is a schematic view of the D part structure in Figure 2

[0024] Figure 7 It is a schematic view of the E part structure in Figure 2

[0025] In the drawings, the component list represented by each mark is as follows:

[0026] 1, induction furnace; 2, induction coil; 3, feeding pipe; 4, discharging pipe; 5, air pressure gauge; 6, exhaust pipe; 7, pre-filtering box; 8, first plug-in block; 9, second plug-in block; 10, partition plate; 11, filter screen; 12, air filter plate; 13, activated carbon adsorption block; 14, negative pressure pipe; 15, negative pressure pump; 16, secondary filtering box; 17, conduit; 18, abutting block; 19, spring; 20, limiting sleeve; 21, column body; 22, anti-dropping bolt; 23, discharge pipe; 24, first electromagnetic valve; 25, second electromagnetic valve; 26, third electromagnetic valve; 27, fixing bolt; 28, perspective plate; 29, detection box; 30, air quality sensor; 31, backup power supply; 32, power supplement interface; 33, air permeable brick; 34, sealing plate; 35, fourth electromagnetic valve; 36, air supply pipe; 37, high-temperature-resistant sealing element.

[0027] It should be noted that these drawings and textual descriptions are not intended to limit the concept range of the utility model in any way, but to illustrate the concept of the utility model to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION ​​​​​

[0028] The utility model will be further explained in detail in connection with the drawings.

[0029] Please refer to Figures 1 to 7 The utility model provides a technical scheme: a steel continuous casting refining device, including induction furnace 1, exhaust pipe 6, prefiltering box 7 and secondary filtering box 16, the wall body inside of induction furnace 1 is equipped with the cavity for the placement of induction coil 2, is equipped with the feeding pipe 3 for molten steel feeding on the one side upper end of induction furnace 1, is equipped with the discharge pipe 4 for molten steel discharge on the other side lower end of induction furnace 1, the upper end of induction furnace 1 is connected with barometer 5 through pipeline, is installed with exhaust pipe 6 on the top of induction furnace 1, the other end of exhaust pipe 6 is connected with prefiltering box 7,

[0030] The upper end of prefiltering box 7 is installed with first plug-in block 8 and second plug-in block 9 respectively, is equipped with baffle 10 for separating first plug-in block 8 and second plug-in block 9 in the inside of prefiltering box 7, the middle part of first plug-in block 8 is penetrated and is equipped with a plurality of gas permeation holes and gas permeation grooves, the inside of each gas permeation hole is equipped with filter screen 11, the inside of each gas permeation groove is equipped with air filter plate 12, the middle part of baffle 10 is equipped with through hole for air circulation, the inside of second plug-in block 9 is equipped with the cavity for the placement of activated carbon adsorption block 13, is equipped with the flow hole for gas in and out on both sides of the cavity, the other side of prefiltering box 7 is communicated with the negative pressure end of negative pressure pump 15 through negative pressure pipe 14, the upper end of negative pressure pump 15 is penetrated to the inside of secondary filtering box 16 through conduit 17,

[0031] Secondary filtering box 16 places the gas washing liquid, considering that the existing induction furnace 1 cannot treat the flue gas generated by material heating during use, and a large amount of flue gas freely escaping can easily cause pollution, the utility model plays a full filtering role on the flue gas generated during the refining process of steel through the cooperation of prefiltering box 7 and secondary filtering box 16, effectively avoids a large amount of flue gas escaping into the working environment, that is, the flue gas generated during the refining process enters prefiltering box 7 through the negative pressure provided by negative pressure pump 15, in the process of gas being introduced into secondary filtering box 16 from prefiltering box 7, first, the multilayer filter screen in first plug-in block 8 and air filter plate 12 are used for preliminary filtering, then the gas enters second plug-in block 9 through baffle 10 and is subjected to secondary filtering by activated carbon adsorption block 13, finally, the gas is conveyed to the inside of secondary filtering box 16 by negative pressure pump 15, after the gas is treated by the gas washing liquid in secondary filtering box 16, finally, it is discharged through discharge pipe 23.

[0032] Among them, the upper end of prefiltering box 7 is equipped with groove for installing first plug-in block 8 and second plug-in block 9 respectively, the groove for installing second plug-in block 9 and the upper end of second plug-in block 9 are all equipped with screw hole for screwing in, the screwing of the screw between second plug-in block 9 and the groove of prefiltering box 7 plays a fixing role.

[0033] The inside of the groove for mounting the first plug-in block 8 is provided with a mounting hole for the movable connection of the abutting block 18, and the inside of each mounting hole is also provided with a spring 19 for resetting the abutting block 18. The upper end of the first plug-in block 8 is abutted by a limiting sleeve 20, and the limiting sleeve 20 is sleeved on the outside of a column 21. The top of each column 21 is threadedly connected with an anti-loosening bolt 22. Considering that the device primarily relies on the filter screen 11 and the air filter plate 12 for preliminary filtration, the air filter screen and the air filter plate 12 are most likely to be blocked, so it is necessary to facilitate the replacement of the first plug-in block 8. Therefore, the device adopts a structure for easily disassembling and mounting the first plug-in block 8, that is, after the abutting block 18 abuts on the upper end of the first plug-in block 8, the first plug-in block 8 is pressed down and the limiting sleeve 20 is rotated to make the bottom thereof abut against the upper end of the first plug-in block 8, so that the fixation of the first plug-in block 8 is completed. Conversely, the first plug-in block 8 can be disassembled by rotating the limiting sleeve 20 so that it does not abut against the upper end of the first plug-in block 8.

[0034] The top of the secondary filter box 16 is communicated with a discharge pipe 23 for discharging gas. The middle of the discharge pipe 23 is provided with a first electromagnetic valve 24, and the bottom of the secondary filter box 16 is communicated with a second electromagnetic valve 25 through a pipeline. The outside of the secondary filter box 16 is communicated with a third electromagnetic valve 26 through a pipeline. The front end of the secondary filter box 16 is provided with a perspective plate 28 through a fixing bolt 27. The first electromagnetic valve 24 is arranged to close or open the pipeline of the discharge pipe 23. The perspective plate 28 facilitates the user to directly observe whether the gas washing liquid needs to be replaced.

[0035] The side of the discharge pipe 23 is provided with a detection box 29 through a screw. The bottom of the insertion end of the detection box 29 is provided with an air quality sensor 30. The air quality sensor 30 is connected with a backup power supply 31 in the insertion end of the detection box 29 through a wire. The backup power supply 31 is connected with a power supply interface 32 at the outer end of the detection box 29 through a wire. The detection box 29 is arranged to monitor the gas discharged from the discharge pipe 23. The air quality sensor 30 is arranged to monitor the air passing through the discharge pipe 23.

[0036] The bottom end of the induction furnace 1 is provided with a plurality of gas permeable bricks 33 for conveying gas, the bottom of each gas permeable brick 33 is fixed with a sealing plate 34, the sealing plate 34 is fixed with the bottom of the induction furnace 1, the middle of the gas permeable brick 33 is penetrated through the sealing plate 34 by a gas injection pipe and is connected with a fourth electromagnetic valve 35, the other end of the fourth electromagnetic valve 35 is communicated with a gas supply pipe 36, the outer side of the lower end of the gas permeable brick 33 is provided with a high-temperature-resistant sealing element 37 on the contact surface with the bottom of the induction furnace 1, the gas permeable brick 33 plays an auxiliary mixing role for the refined molten steel, that is, when refining the stainless steel, argon-oxygen is injected through the gas supply pipe 36 and the fourth electromagnetic valve 35, so that the molten steel is stirred while not being secondarily oxidized with the molten steel, thereby achieving the purpose of decarburization and chromium preservation by blowing argon-oxygen during the smelting process.

[0037] The utility model is not limited to the above-mentioned embodiment, any person should know the structural change made under the inspiration 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 is not described in detail, and the technical, shape and structure parts are all known technology.

Claims

1. A steel continuous casting and refining apparatus comprising an induction furnace (1), an exhaust pipe (6), a pre-filter box (7), and a secondary filter box (16), characterized in that, The wall of the induction furnace (1) is internally provided with a cavity for placing the induction coil (2), an inlet pipe (3) for feeding molten steel is arranged at the upper end of one side of the induction furnace (1), a discharge pipe (4) for discharging molten steel is arranged at the lower end of the other side of the induction furnace (1), and the upper end of the induction furnace (1) is connected with an air pressure gauge (5) through a pipeline, an exhaust pipe (6) is arranged on the top of the induction furnace (1), and the other end of the exhaust pipe (6) is communicated with a pre-filter box (7); The upper end of the pre-filter box (7) is respectively provided with a first plug-in block (8) and a second plug-in block (9), a partition plate (10) is arranged in the pre-filter box (7) for separating the first plug-in block (8) and the second plug-in block (9), a plurality of air permeable holes and air permeable grooves are arranged in the middle of the first plug-in block (8), a filter screen (11) is arranged in each air permeable hole, and an air filter plate (12) is arranged in each air permeable groove, a through hole is arranged in the middle of the partition plate (10) for air circulation, a cavity for placing an activated carbon adsorption block (13) is arranged in the inside of the second plug-in block (9), and flow-through holes for gas inlet and outlet are arranged on both sides of the cavity, the other side of the pre-filter box (7) is communicated with a negative pressure end of a negative pressure pump (15) through a negative pressure pipe (14), and the upper end of the negative pressure pump (15) penetrates into the inside of a secondary filter box (16) through a pipeline (17). The secondary filter box (16) is internally placed with a gas washing liquid.

2. A continuous casting and refining apparatus for steel material according to claim 1, characterized by The upper end of the pre-filter box (7) is respectively provided with a first plug-in block (8) and a second plug-in block (9), a partition plate (10) is arranged in the pre-filter box (7) for separating the first plug-in block (8) and the second plug-in block (9), a plurality of air permeable holes and air permeable grooves are arranged in the middle of the first plug-in block (8), a filter screen (11) is arranged in each air permeable hole, and an air filter plate (12) is arranged in each air permeable groove, a through hole is arranged in the middle of the partition plate (10) for air circulation, a cavity for placing an activated carbon adsorption block (13) is arranged in the inside of the second plug-in block (9), and flow-through holes for gas inlet and outlet are arranged on both sides of the cavity, the other side of the pre-filter box (7) is communicated with a negative pressure end of a negative pressure pump (15) through a negative pressure pipe (14), and the upper end of the negative pressure pump (15) penetrates into the inside of a secondary filter box (16) through a pipeline (17).

3. A continuous casting and refining apparatus for steel material according to claim 2, wherein The secondary filter box (16) is internally placed with a gas washing liquid.

4. The apparatus according to claim 1, wherein The upper end of the pre-filter box (7) is respectively provided with a first plug-in block (8) and a second plug-in block (9), a partition plate (10) is arranged in the pre-filter box (7) for separating the first plug-in block (8) and the second plug-in block (9), a plurality of air permeable holes and air permeable grooves are arranged in the middle of the first plug-in block (8), a filter screen (11) is arranged in each air permeable hole, and an air filter plate (12) is arranged in each air permeable groove, a through hole is arranged in the middle of the partition plate (10) for air circulation, a cavity for placing an activated carbon adsorption block (13) is arranged in the inside of the second plug-in block (9), and flow-through holes for gas inlet and outlet are arranged on both sides of the cavity, the other side of the pre-filter box (7) is communicated with a negative pressure end of a negative pressure pump (15) through a negative pressure pipe (14), and the upper end of the negative pressure pump (15) penetrates into the inside of a secondary filter box (16) through a pipeline (17).

5. A continuous casting and refining apparatus for steel material according to claim 4, wherein The secondary filter box (16) is internally placed with a gas washing liquid. The upper end of the pre-filter box (7) is respectively provided with a first plug-in block (8) and a second plug-in block (9), a partition plate (10) is arranged in the pre-filter box (7) for separating the first plug-in block (8) and the second plug-in block (9), a plurality of air permeable holes and air permeable grooves are arranged in the middle of the first plug-in block (8), a filter screen (11) is arranged in each air permeable hole, and an air filter plate (12) is arranged in each air permeable groove, a through hole is arranged in the middle of the partition plate (10) for air circulation, a cavity for placing an activated carbon adsorption block (13) is arranged in the inside of the second plug-in block (9), and flow-through holes for gas inlet and outlet are arranged on both sides of the cavity, the other side of the pre-filter box (7) is communicated with a negative pressure end of a negative pressure pump (15) through a negative pressure pipe (14), and the upper end of the negative pressure pump (15) penetrates into the inside of a secondary filter box (16) through a pipeline (17). The secondary filter box (16) is internally placed with a gas washing liquid. The upper end of the pre-filter box (7) is respectively provided with a first plug-in block (8) and a second plug-in block (9), a partition plate (10) is arranged in the pre-filter box (7) for separating the first plug-in block (8) and the second plug-in block (9), a plurality of air permeable holes and air permeable grooves are arranged in the middle of the first plug-in block (8), a filter screen (11) is arranged in each air permeable hole, and an air filter plate (12) is arranged in each air permeable groove, a through hole is arranged in the middle of the partition plate (10) for air circulation, a cavity for placing an activated carbon adsorption block (13) is arranged in the inside of the second plug-in block (9), and flow-through holes for gas inlet and outlet are arranged on both sides of the cavity, the other side of the pre-filter box (7) is communicated with a negative pressure end of a negative pressure pump (15) through a negative pressure pipe (14), and the upper end of the negative pressure pump (15) penetrates into the inside of a secondary filter box (16) through a pipeline (17).

6. A continuous casting and refining apparatus for steel material according to claim 1, characterized by The bottom end of the induction furnace (1) is provided with a plurality of gas permeable bricks (33) for conveying gas, the bottom of each gas permeable brick (33) is fixed with a sealing plate (34), the sealing plate (34) is fixed with the bottom of the induction furnace (1), the middle part of the gas permeable brick (33) penetrates the sealing plate (34) through a gas injection pipe and is connected with a fourth electromagnetic valve (35), the other end of the fourth electromagnetic valve (35) is communicated with a gas supply pipe (36), and the outer side of the lower end of the gas permeable brick (33) is provided with a high-temperature-resistant sealing element (37) in contact with the bottom of the induction furnace (1).

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