Totally-closed tipping heat braising device for steel slag heat braising and method of totally-closed tipping heat braising device

Abstract

The invention relates to a totally-closed tipping heat braising device and method for steel slag heat braising, and belongs to the technical field of steel slag treatment heat braising process equipment in the metallurgical industry. According to the technical scheme, trunnions (20) are symmetrically arranged on the two sides of a slag pot (2), trunnion brackets (24) matched with the trunnions (20) are arranged in a hot stewing pit (3), the trunnions (20) on the two sides of the slag pot (2) are rotationally connected to the trunnion brackets (24), and a motor (12) is in driving connection with one of the trunnions (20) through a speed reducer (13); the hot braising cover (1) covers the hot braising pit (3), and one side of the hot braising cover (1) is hinged to the hot braising cover base (5); the winch (6) is in driving connection with the heat stewing cover (1) through a steel wire rope (8), and pulleys matched with the steel wire rope (8) are arranged on the support (7) and the heat stewing cover (1) respectively. Steel slag treatment is completed in a closed state, and environment pollution caused by overflow of smoke and water vapor at the moment of pouring high-temperature steel slag into a pit is avoided.

Description

Technical Field

[0001] The invention relates to a fully enclosed tilting hot stewing device for hot stewing of steel slag and a method thereof, belonging to the technical field of hot stewing process equipment for steel slag treatment in the metallurgical industry. Background Art

[0002] In the process of steel smelting, a large amount of high-temperature solid and liquid slag is produced. If it is not treated, the discharged and cooled slag will become solid waste, occupying the limited space in the factory. Moreover, after cooling outdoors, the slag is easily weathered and turned into fine dust particles that pollute the environment.

[0003] At present, the common method of hot stewing of steel slag is to pour the steel slag into the hot stewing pit through an overhead crane, cover it and then stew it with water. However, the moment the high-temperature steel slag is poured into the pit, the impact force will bring up smoke and dust. At the same time, the high-temperature steel slag of thousands of degrees will immediately form high-temperature water vapor when it contacts the water at the bottom of the pit. The smoke and water vapor will quickly rise out of the hot stewing pit to a height of 10 meters. Then the slag pot will be lifted away and the lid will be covered to seal the slag pit, which has already caused pollution to the environment. Summary of the invention

[0004] The purpose of the present invention is to provide a fully enclosed tilting hot stewing device and method for hot stewing of steel slag, which can complete the steel slag treatment in a closed state, avoid the instantaneous overflow of smoke and water vapor when the high-temperature steel slag is poured into the pit to pollute the environment, and solve the problems existing in the background technology.

[0005] The technical solution of the present invention is: A fully enclosed tilting hot-stewing device for hot-stewing steel slag comprises a hot-stewing cover, a slag pot, a hot-stewing pit, a hot-stewing cover base, a winch, a bracket, a steel wire rope, a motor and a reducer. Symmetrically arranged ear shafts are provided on both sides of the slag pot, an ear shaft support seat matching the ear shafts is provided in the hot-stewing pit, the ear shafts on both sides of the slag pot are rotatably connected to the ear shaft support seat, and the motor is drivingly connected to one of the ear shafts through the reducer; the hot-stewing cover is covered on the hot-stewing pit, and one side of the hot-stewing cover is hinged to the hot-stewing cover base; the winch is drivingly connected to the hot-stewing cover through the steel wire rope, and pulleys matching the steel wire rope are respectively provided on the bracket and the hot-stewing cover.

[0006] The hot stewing cover is provided with a hot stewing cover exhaust pipe, and the hot stewing cover exhaust pipe is connected with the dust removal main pipeline.

[0007] The ear shaft bracket is provided with a free roller matched with the ear shaft.

[0008] The output shaft of the reducer is connected to the torsion member, and the torsion member is connected to the trunnion.

[0009] One end of the ear shaft is a rectangle matched with the torsion piece, and the other end of the ear shaft is a cylinder matched with the ear shaft support seat.

[0010] The bracket is provided with a bracket pulley matched with the steel wire rope, and the hot stewing cover is provided with a hot stewing cover pulley matched with the steel wire rope.

[0011] A fully enclosed tilting hot stewing method for hot stewing of steel slag adopts the fully enclosed tilting hot stewing device for hot stewing of steel slag defined above and operates according to the following steps: Step 1: Open the hot stewing cover on the hot stewing pit by using a winch; Step 2: Place the slag pot filled with steel slag into the hot stewing pit, place the trunnions on both sides of the slag pot on the trunnion support, and connect the output shaft of the reducer to one of the trunnions through a torsion piece; Step 3: Cover the hot stewing cover on the hot stewing pit by means of a winch; Step 4: Start the motor and rotate the slag pot to pour the steel slag in the slag pot into the hot stewing pit. The smoke and water vapor generated at this time will enter the dust removal main line through the hot stewing cover exhaust pipe, thus avoiding environmental pollution.

[0012] The beneficial effects of the present invention are: (1) During the whole process of hot stewing of steel slag, it is always in a closed state to ensure that no pollutants spill out, which is environmentally friendly, efficient, safe and reliable; (2) When the hot stewing pit is closed, the slag pot rotates to empty the slag, and the rising smoke and water vapor flow along the inner wall of the slag pot to the hot stewing cover exhaust pipe. The slag pot plays a role in optimizing the flow field. At the same time, the slag pot blocks most of the high-temperature water vapor, which plays a role in protecting and insulating the hot stewing cover, thereby increasing the equipment life and reducing equipment loss. (3) A movable pulley structure is used to drive the hot stewing cover to open and close, and a free sliding roller structure is used to support the rotation of the slag pot, which reduces the driving power and improves the equipment utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a plan view of the present invention; Figure 2 It is a vertical cross-sectional view of the present invention in an open cover state; Figure 3 It is a vertical cross-sectional view of the slag pot in a tilted state after the cover is closed according to the present invention; Figure 4 It is a schematic elevation view of the slag pot of the present invention; Figure 5 It is a cross-sectional structural diagram of the bracket and the trunnion of the present invention; In the figure: hot stew cover 1, slag pot 2, hot stew pit 3, hot stew cover exhaust pipe 4, hot stew cover base 5, hoist 6, bracket 7, wire rope 8, bracket pulley 9, hot stew cover pulley 10, dust removal main line 11, motor 12, reducer 13, torsion piece 14; Ear shaft 20, ear shaft overhead crane lifting position 21, ear shaft weight position 22, ear shaft twisting position 23, ear shaft support seat 24, free rolling 25. DETAILED DESCRIPTION

[0014] The present invention will be further described below by way of examples with reference to the accompanying drawings.

[0015] See attached Figure 1-5 A fully enclosed tilting hot stewing device for hot stewing of steel slag comprises a hot stewing cover 1, a slag pot 2, a hot stewing pit 3, a hot stewing cover base 5, a winch 6, a bracket 7, a steel wire rope 8, a motor 12 and a reducer 13. The slag pot 2 is provided with symmetrically arranged ear shafts 20 on both sides, and the hot stewing pit 3 is provided with an ear shaft support 24 matching the ear shaft 20. The ear shafts 20 on both sides of the slag pot 2 are rotatably connected to the ear shaft support 24, and the motor 12 is driven and connected with one of the ear shafts 20 through the reducer 13; the hot stewing cover 1 is covered on the hot stewing pit 3, and one side of the hot stewing cover 1 is hinged on the hot stewing cover base 5; the winch 6 is driven and connected with the hot stewing cover 1 through the steel wire rope 8, and the bracket 7 and the hot stewing cover 1 are respectively provided with pulleys matching the steel wire rope 8.

[0016] In this embodiment, refer to the attached Figure 1-5 The fully enclosed tilting hot stewing device for hot stewing of steel slag comprises a hot stewing cover 1, a slag pot 2, a hot stewing pit 3, a hot stewing cover exhaust pipe 4, a hot stewing cover base 5, a hoist 6, a bracket 7, a wire rope 8, a bracket pulley 9, a hot stewing cover pulley 10, a dust removal main line 11, a motor 12, a reducer 13 and a torsion member 14, wherein: The hot stewing pit 3 is a civil engineering structure for dumping steel slag to produce hot stewing reaction, and thick steel billets for heat insulation are laid in the pit.

[0017] The hot stewing cover 1 is a double-layer steel structure cover made by welding steel plates and steel sections. High-temperature resistant insulation materials are laid between the double-layer steel plates. The hot stewing cover 1 covers the hot stewing pit 3 when working to prevent smoke and steam from overflowing.

[0018] The hot stewing cover base 5 is an equipment base made of welded steel plates. The hot stewing cover 1 and the hot stewing cover base 5 are connected and fixed by a rotating shaft. The hot stewing cover 1 rotates around the hot stewing cover base 5 to complete the opening and closing action of the hot stewing cover 1.

[0019] The dust removal main pipeline 11 is a pipeline in the workshop dust removal system, which is connected to the hot stew cover exhaust pipe 4. The hot stew cover exhaust pipe 4 is responsible for collecting the smoke and water vapor in the hot stew cover 1.

[0020] The hot stew cover pulley 10 is fixed to the top of the hot stew cover 1 by bolts, and the bracket pulley 9 is fixed to the bracket 7 by bolts. The bracket 7 is made of welded steel and is used to fix the bracket pulley 9 and the winch 6. The wire rope 8 pulled by the winch 6 first passes through the bracket pulley 9 on the top of the bracket 7, and then reaches the hot stew cover pulley 10. After winding half a circle, one end of the wire rope 8 is fixed to the fixed position of the bracket 7, wherein the hot stew cover pulley 10 is a movable pulley and the bracket pulley 9 is a fixed pulley. Through such an arrangement, the pulling force of the winch can be amplified, and the rotation of the hot stew cover 1 can be completed more effectively.

[0021] Symmetrically arranged ear shafts 20 are provided on both sides of the slag pot 2, and an ear shaft support 24 matched with the ear shafts 20 is provided in the hot stewing pit 3.

[0022] As attached Figure 4 As shown, the ear shaft 20 includes an ear shaft crane lifting portion 21, an ear shaft bearing weight portion 22 and an ear shaft torsion portion 23. The ear shaft crane lifting portion 21 is a portion used for crane hook lifting and transportation, and has a circular cross-sectional shape; the ear shaft bearing weight portion 22 is a portion that contacts the ear shaft support 24 after the slag pot 2 is placed in the working position and bears the weight of the slag pot 2 itself, and has a circular cross-sectional shape; the ear shaft torsion portion 23 cooperates with the torsion member 14 to transmit torque, and has a rectangular cross-sectional shape.

[0023] As attached Figure 5 As shown, the ear shaft support 24 is a load-bearing base with a free roller, and the free roller 25 is a group of freely rotatable rollers installed on the ear shaft support 24. After the slag pot 2 is placed on the hot simmering pit 3, the ear shaft load-bearing part 22 contacts the free roller 25. After the motor 12 is started, the torsion member 14 drives the ear shaft torsion part 23 to rotate together. At this time, the ear shaft load-bearing part 22 and the free roller 25 rotate relative to each other, thereby ensuring the rotating slag pouring action of the slag pot 2. At the same time, the free roller 25 also provides stable support for the rotation of the slag pot 2, and greatly reduces the friction and the tilting force of the rotation.

[0024] like Figure 3 As shown, after the steel slag is poured out from the slag pot 2, it falls into the hot stewing pit 3. The flow direction of the rising smoke and water vapor, after the slag pot 2 is tipped over after the slag is poured, plays a role in optimizing the flow field direction of the smoke and water vapor, and at the same time can isolate the rising high-temperature water vapor, which plays a certain protective role on the hot stewing cover 1.

[0025] The workflow of the present invention is as follows: (1) The winch 6 starts to work, and the winch 6 pulls the hot stew cover 1 to rotate around the hot stew cover base 5 through the wire rope 8, so that the hot stew pit 3 is in an open state; (2) After the slag pot 2 is hoisted to the top of the hot stewing pit 3 by the overhead crane, the ear shaft 20 of the slag pot 2 is placed on the ear shaft support 24. At this time, the ear shaft weight part 22 contacts the support free sliding roller 25, and the ear shaft torsion part 23 contacts the rectangular groove of the torsion member 14. After the slag pot 2 is placed, the winch 6 is started and the hot stewing cover 1 is closed. At this time, the hot stewing pit 3 is in a closed state; (3) When the hot stewing pit 3 is closed, the motor 12 is started to drive the ear shaft torsion part 23 to rotate together. At this time, the ear shaft weight part 22 and the free roller 25 rotate relative to each other, and the high-temperature steel slag is poured out from the slag pot 2 and falls to the bottom of the hot stewing pit 3, and the hot stewing treatment operation of the steel slag is started. After the slag is poured, the slag pot 2 optimizes the flow field direction of the rising smoke and water vapor, and at the same time can isolate the rising high-temperature water vapor, which plays a certain protective role on the hot stewing cover 1. At the same time, the smoke and water vapor enter the dust removal main line 11 through the hot stewing cover exhaust pipe 4 to avoid polluting the environment.

Claims

1. A fully enclosed tilting hot stewing device for hot stewing of steel slag, characterized in that: The invention comprises a hot stewing cover (1), a slag pot (2), a hot stewing pit (3), a hot stewing cover base (5), a winch (6), a bracket (7), a steel wire rope (8), a motor (12) and a reducer (13); symmetrically arranged ear shafts (20) are provided on both sides of the slag pot (2); an ear shaft support (24) matching with the ear shafts (20) is provided in the hot stewing pit (3); the ear shafts (20) on both sides of the slag pot (2) are rotatably connected to the ear shaft support (24); the motor (12) is drivingly connected to one of the ear shafts (20) through the reducer (13); the hot stewing cover (1) covers the hot stewing pit (3); one side of the hot stewing cover (1) is hinged on the hot stewing cover base (5); the winch (6) is drivingly connected to the hot stewing cover (1) through the steel wire rope (8); and pulleys matching with the steel wire rope (8) are respectively provided on the bracket (7) and the hot stewing cover (1).

2. A fully enclosed tilting hot stewing device for steel slag hot stewing according to claim 1, characterized in that: The hot stewing cover (1) is provided with a hot stewing cover smoke exhaust pipe (4), and the hot stewing cover smoke exhaust pipe (4) is connected to the dust removal main pipeline (11).

3. A fully enclosed tilting hot stewing device for steel slag hot stewing according to claim 1, characterized in that: The ear shaft bracket (24) is provided with a free-rolling roller (25) that matches the ear shaft (20).

4. A fully enclosed tilting hot stewing device for steel slag hot stewing according to claim 1, characterized in that: The output shaft of the reducer (13) is connected to the torsion member (14), and the torsion member (14) is connected to the ear shaft (20).

5. A fully enclosed tilting hot stewing device for steel slag hot stewing according to claim 4, characterized in that: One end of the ear shaft (20) is a rectangle that matches the torsion piece (14), and the other end of the ear shaft (20) is a cylinder that matches the ear shaft bracket (24).

6. A fully enclosed tilting hot stewing device for steel slag hot stewing according to claim 1, characterized in that: The bracket (7) is provided with a bracket pulley (9) that matches the steel wire rope (8), and the hot stewing cover (1) is provided with a hot stewing cover pulley (10) that matches the steel wire rope (8).

7. A fully enclosed tilting hot stewing method for steel slag hot stewing, characterized in that: A fully enclosed tilting hot stewing device for hot stewing of steel slag as defined in any one of claims 1 to 6 is used and operated according to the following steps: Step 1: Opening the hot stewing cover (1) covering the hot stewing pit (3) by means of a winch (6); Step 2: placing a slag pot (2) filled with steel slag into a hot stewing pit (3), placing the ear shafts (20) on both sides of the slag pot (2) on ear shaft brackets (24), and connecting the output shaft of the reducer (13) to one of the ear shafts (20) via a torsion piece (14); Step 3: Covering the hot stewing cover (1) on the hot stewing pit (3) by means of a winch (6); Step 4: Start the motor (12) and rotate the slag pot (2) to pour the steel slag in the slag pot (2) into the hot stewing pit (3). At this time, the smoke and water vapor generated enter the dust removal main line (11) through the hot stewing cover exhaust pipe (4), thereby avoiding environmental pollution.

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