Flue gas gathering device for slag runner of blast furnace casting house

Abstract

The utility model provides a blast furnace casting house slag runner flue gas gathering device which comprises a processing box and a collecting cover, inner cavities are symmetrically formed in the two ends of the processing box, collecting boxes are arranged in the inner cavities through adjusting mechanisms, and filter screens are fixedly arranged at the bottoms of the inner sides of the collecting boxes. The slag runner smoke can be collected under the action of the collecting cover, the collecting pipe and the fan, and the slag runner smoke is introduced into water in the inner cavity and the collecting box, so that heat in the slag runner smoke can be conveniently recycled, the temperature of the slag runner smoke is reduced, and the influence of high temperature of the slag runner smoke on the device is avoided; and meanwhile, solid impurities in the flue gas of the slag runner can enter water and are separated from the gas, the collecting box is movably adjusted through the hydraulic cylinder and the fixing plate, the solid impurities in the collecting box are conveniently discharged and treated, and therefore the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas capture in a blast furnace casthouse, in particular to a slag ditch flue gas capture device in a blast furnace casthouse. Background Art

[0002] The blast furnace taproom is where the molten iron and slag, the final products of blast furnace ironmaking, are discharged and collected. It is a hot and dusty work area in front of the blast furnace. A slag ditch is located on one side of the blast furnace, into which the slag is discharged. This process generates a large amount of flue gas, which directly causes air pollution and requires treatment.

[0003] In the prior art, dust collectors are usually used to treat slag ditch flue gas. However, due to the high temperature of the discharged flue gas, the dust collector is easily damaged, and the heat in the flue gas cannot be recovered, which will cause energy waste and is not conducive to saving resources.

[0004] To this end, the utility model provides a blast furnace casthouse slag ditch fume capture device. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a slag ditch flue gas capture device for a blast furnace iron-making yard to solve the problems raised in the above-mentioned background technology. The present invention passes the slag ditch flue gas into the water inside the inner cavity and the collection box, which can recover the heat in the slag ditch flue gas and reduce the temperature of the slag ditch flue gas to avoid the high temperature of the slag ditch flue gas from affecting the device, facilitate the recycling of heat and save resources, and has high practicality.

[0006] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a blast furnace iron-making yard slag ditch smoke capture device, comprising a processing box and a collecting cover, symmetrically provided with inner cavities at both ends of the processing box, a collecting box is provided inside the inner cavity through an adjusting mechanism, a filter is fixedly provided on the inner bottom of the collecting box, a discharge port is provided between one end of the filter and the inner wall of the collecting box, an air intake pipe is fixedly provided at the middle position inside the processing box, an L-shaped rod is fixedly provided on the top of one end of the air intake pipe corresponding to the interior of the processing box, and fans are provided on both sides of the top of the processing box through fixed covers.

[0007] Furthermore, a water inlet is fixedly provided on one side of the top of the inner cavity, and a drain outlet is fixedly provided on one side of the bottom of the inner cavity corresponding to below the filter screen, and the drain outlet is provided on one side of the air inlet pipe.

[0008] Furthermore, a sealing rubber ring is provided between one end of the collection box and the inner wall of the processing box, and a water level gauge is fixedly provided on the top of the inner wall of the collection box.

[0009] Furthermore, fixed plates are symmetrically fixed on both sides of one end of the collection box, hydraulic cylinders are symmetrically fixed on the front and rear ends of the processing box, and the output rods of the hydraulic cylinders are fixedly connected to one end of the fixed plate.

[0010] Furthermore, a movable tube is movably installed inside one end of the L-shaped rod through a torsion spring rotating shaft, and a metal hose is provided between one end of the movable tube and the top end of the air intake pipe.

[0011] Furthermore, the bottom end of the movable tube is arranged inside the collection box, the bottom end of the air inlet pipe is in a "Y" shape, and the bottom end of the air inlet pipe is arranged at the bottom of the processing box.

[0012] Furthermore, collecting pipes are fixedly provided at equal intervals on the top of the collecting cover, and the collecting pipes are fixedly connected to the bottom end of the air inlet pipe.

[0013] Furthermore, a through hole is opened on one side of the top of the inner cavity, the fixed cover is fixedly arranged on the top of the through hole, the fan is fixedly installed inside the fixed cover, and a discharge pipe is fixedly arranged at the top center position of the fixed cover.

[0014] The beneficial effects of the utility model are as follows: the utility model provides a slag ditch flue gas capture device for a blast furnace iron-making yard, which can collect the slag ditch flue gas under the action of a collecting hood, a collecting pipe and a fan, and pass the slag ditch flue gas into the water inside the inner cavity and the collecting box, so as to facilitate the recovery of heat in the slag ditch flue gas and reduce the temperature of the slag ditch flue gas, thereby avoiding the high temperature of the slag ditch flue gas from affecting the device, facilitating the recycling of heat and saving resources, and at the same time, solid impurities in the slag ditch flue gas can enter the water and be separated from the gas, and the movement and adjustment of the collecting box by the hydraulic cylinder and the fixed plate can facilitate the discharge and treatment of the solid impurities inside the collecting box, and the alternating use and adjustment of the collecting boxes on both sides can facilitate the continuous treatment and capture of the slag ditch flue gas, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of a blast furnace casthouse slag ditch fume capture device according to the present utility model;

[0016] Figure 2 This is a front cross-sectional view of a blast furnace tapping site slag ditch fume capture device according to the present invention;

[0017] Figure 3 This is a cross-sectional view of a partial structure of a blast furnace casthouse slag ditch fume capture device according to the present invention;

[0018] Figure 4 This is a structural diagram of a collection box for a blast furnace tapping site slag ditch fume capture device according to the present utility model;

[0019] In the figure: 1. Processing box; 2. Collection box; 3. Fixed plate; 4. Hydraulic cylinder; 5. Fixed cover; 6. Discharge pipe; 7. Water inlet; 8. Drain outlet; 9. Air inlet pipe; 10. Collection cover; 11. Collection pipe; 12. Fan; 13. Through hole; 14. L-shaped rod; 15. Movable pipe; 16. Filter; 17. Discharge outlet. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] See also Figures 1 to 4 The utility model provides a technical solution: a slag ditch flue gas capture device for a blast furnace iron-making yard, comprising a processing box 1 and a collecting cover 10, wherein inner cavities are symmetrically opened inside at both ends of the processing box 1, and a collecting box 2 is arranged inside the inner cavity through an adjusting mechanism, and a filter screen 16 is fixedly arranged on the inner bottom of the collecting box 2, and a discharge port 17 is opened between one end of the filter screen 16 and the inner wall of the collecting box 2, an air intake pipe 9 is fixedly arranged at the middle position inside the processing box 1, and an L-shaped rod 14 is fixedly arranged on the top of one end of the air intake pipe 9 corresponding to the interior of the processing box 1, and fans 12 are arranged on both sides of the top of the processing box 1 through fixed covers 5, and water is passed through the collecting box 2 and the inner cavity to pass the slag ditch flue gas into the water, which facilitates the reduction of the temperature of the slag ditch flue gas and recovers the heat therein, thereby avoiding damage to the device caused by the slag ditch flue gas and conveniently saving resources.

[0022] In this embodiment, a water inlet 7 is fixedly provided on one side of the top of the inner cavity, and a drain outlet 8 is fixedly provided on one side of the bottom of the inner cavity corresponding to the bottom of the filter screen 16. The drain outlet 8 is provided on one side of the air inlet pipe 9. A sealing rubber ring is provided between one end of the collecting box 2 and the inner wall of the processing box 1. A water level gauge is fixedly provided on the top of the inner wall of the collecting box 2. Fixed plates 3 are symmetrically fixed on both sides of one end of the collecting box 2. Hydraulic cylinders 4 are symmetrically fixed at the front and rear ends of the processing box 1. The output rod of the hydraulic cylinder 4 is fixedly connected to one end of the fixed plate 3. Water can be added to the interior of the collecting box 2 through the water inlet 7, which facilitates the passage of slag ditch flue gas into the water and its treatment. Impurities in the water can be filtered through the filter screen 16, which facilitates the replacement of water in the collecting box 2. The water level gauge can control the water level, and the collecting box 2 can be driven to move outward through the hydraulic cylinder 4 and the fixed plate 3, which facilitates the discharge of solid impurities through the discharge port 17.

[0023] In this embodiment, a movable tube 15 is movably installed inside one end of the L-shaped rod 14 through a torsion spring rotating shaft, a metal hose is provided between one end of the movable tube 15 and the top of the air intake pipe 9, the bottom end of the movable tube 15 is provided inside the collecting box 2, the bottom end of the air intake pipe 9 is in a "Y" shape, the bottom end of the air intake pipe 9 is provided at the bottom of the processing box 1, and the top of the collecting cover 10 is fixedly provided with collecting tubes 11 at equal intervals, the collecting tubes 11 are fixedly connected to the bottom end of the air intake pipe 9, and the collecting box 2 can squeeze the movable tube 15 when it moves outward to avoid affecting the collecting box 2, thereby ensuring that the bottom end of the movable tube 15 is provided in water.

[0024] In this embodiment, a through hole 13 is opened on one side of the top of the inner cavity, the fixed cover 5 is fixedly set on the top of the through hole 13, the fan 12 is fixedly installed inside the fixed cover 5, and an exhaust pipe 6 is fixedly set at the top center position of the fixed cover 5. The air inside the inner cavity can be discharged by the fan 12, and negative pressure is generated inside the inner cavity. Under the action of negative pressure, the collection cover 10 and the collection pipe 11 can discharge the slag ditch smoke into the interior of the air inlet pipe 9, which is convenient for capturing the slag ditch smoke.

[0025] When the blast furnace iron-making yard slag ditch flue gas capture device is used, the collection hood 10 is fixedly installed above the slag ditch, the processing box 1 is fixed by a bracket and installed above the collection hood 10, the collection pipe 11 is fixedly connected to the air inlet pipe 9, and water is passed to the inner cavity on both sides and the interior of the collection box 2 through the water inlet 7. Solenoid valves are installed at both ends of the top of the air inlet pipe 9. The air inlet pipe 9 on the right is closed by the solenoid valve, and the fan 12 is started. The fan 12 discharges the air inside the inner cavity through the through hole 13 and forms a negative pressure. Under the action of the negative pressure, the collection hood 10 and the collection pipe 11 collect the slag ditch flue gas and discharge it into the interior of the air inlet pipe 9. The air inlet pipe 9, the metal hose and the movable pipe 15 after the bronze drum are discharged into the water, and the heat in the slag ditch flue gas is absorbed by the water and the temperature of the slag ditch flue gas is reduced. At the same time, the solid impurities in the slag ditch flue gas will enter the water and be separated from the gas, and finally discharged to other processing equipment through the through hole 13, the fan 12, the fixed hood 5 and the discharge pipe 6, and the slag ditch is continued to be treated. The flue gas is subsequently treated, and the solid impurities in the water are filtered through the filter 16. The water after absorbing heat is discharged through the drain port 8, which is convenient for recycling the heat in the slag ditch flue gas, reducing the temperature of the slag ditch flue gas, and avoiding the high temperature of the slag ditch flue gas from affecting the device, which is convenient for recycling heat and saving resources; after a period of treatment, the solenoid valve at the top left end of the air inlet pipe 9 is closed, and the right solenoid valve is opened, so that the slag ditch flue gas can enter the inner cavity on the right through the air inlet pipe 9, and the slag ditch flue gas is treated by the right collection box 2 and water, and the water inside the left inner cavity is completely discharged through the drain port 8. The collection box 2 is adjusted by the fixed plate 3 driven by the hydraulic cylinder 4, so that the collection box 2 moves to the outside of the treatment box 1, and the discharge port 17 is moved out from the inside of the treatment box 1, which is convenient for cleaning solid impurities. By alternating use and adjustment of the collection boxes 2 on both sides, the slag ditch flue gas can be continuously treated and captured, thereby improving the practicality of the device.

[0026] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A blast furnace iron-making yard slag ditch fume capture device, comprising a processing box (1) and a collecting hood (10), characterized in that: Inner cavities are symmetrically provided at both ends of the processing box (1), and a collecting box (2) is provided inside the inner cavity through an adjusting mechanism. A filter screen (16) is fixedly provided at the inner bottom of the collecting box (2), and a discharge port (17) is provided between one end of the filter screen (16) and the inner wall of the collecting box (2). An air inlet pipe (9) is fixedly provided at the middle position inside the processing box (1), and an L-shaped rod (14) is fixedly provided at the top of one end of the air inlet pipe (9) corresponding to the inside of the processing box (1), and fans (12) are provided on both sides of the top of the processing box (1) through a fixed cover (5).

2. The blast furnace casthouse slag ditch fume capture device according to claim 1, characterized in that: A water inlet (7) is fixedly provided on one side of the top of the inner cavity, and a drain outlet (8) is fixedly provided on one side of the bottom of the inner cavity corresponding to below the filter screen (16), and the drain outlet (8) is provided on one side of the air inlet pipe (9).

3. The blast furnace casthouse slag ditch fume capture device according to claim 2, characterized in that: A sealing rubber ring is provided between one end of the collecting box (2) and the inner wall of the processing box (1), and a water level gauge is fixedly provided on the top of the inner wall of the collecting box (2).

4. The blast furnace casthouse slag ditch fume capture device according to claim 3, characterized in that: Fixed plates (3) are symmetrically fixedly provided on both sides of one end of the collection box (2), and hydraulic cylinders (4) are symmetrically fixedly provided at the front and rear ends of the processing box (1), and the output rod of the hydraulic cylinder (4) is fixedly connected to one end of the fixed plate (3).

5. The blast furnace casthouse slag ditch fume capture device according to claim 1, characterized in that: A movable tube (15) is movably installed inside one end of the L-shaped rod (14) via a torsion spring rotating shaft, and a metal hose is provided between one end of the movable tube (15) and the top end of the air intake pipe (9).

6. The blast furnace casthouse slag ditch fume capture device according to claim 5, characterized in that: The bottom end of the movable tube (15) is arranged inside the collecting box (2), the bottom end of the air inlet pipe (9) is in a "Y" shape, and the bottom end of the air inlet pipe (9) is arranged at the bottom of the processing box (1).

7. The blast furnace casthouse slag ditch fume capture device according to claim 6, characterized in that: Collection pipes (11) are fixedly arranged at equal intervals on the top of the collection cover (10), and the collection pipes (11) are fixedly connected to the bottom end of the air inlet pipe (9).

8. The blast furnace casthouse slag ditch fume capture device according to claim 1, characterized in that: A through hole (13) is provided on one side of the top of the inner cavity, the fixed cover (5) is fixedly arranged on the top of the through hole (13), the fan (12) is fixedly installed inside the fixed cover (5), and a discharge pipe (6) is fixedly arranged at the center position of the top of the fixed cover (5).

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