阅读说明：本技术 一种转炉炉下的活动挡渣装置 (Movable slag blocking device under converter ) 是由 班明 王宏斌 王金宝 李咏昕 雷耀忠 曹晶 赵雅彬 樊峰 啜占军 杨朝明 于 2019-11-16 设计创作，主要内容包括：一种转炉炉下的活动挡渣装置,属于转炉生产设备技术领域,用于在在转炉炉下进行挡渣。其技术方案是：挡渣板位于转炉支撑基础挡墙的内侧,挡渣板的上端通过铰接座与转炉支撑基础挡墙上端为可转动连接,挡渣板板面后部中间位置有推杆活动铰接座,推杆前端与推杆活动铰接座相连接,推杆的杆体穿过转炉支撑基础挡墙的推杆孔,曲臂的两端通过铰接座分别与推杆的后端和气缸推杆的前端相连接,曲臂的中间与固定在基础上的曲臂转动铰接座相连接,气缸的缸体轴销通过气缸固定铰接座与转炉支撑基础挡墙的外侧下部基础固定,形成可转动连接。本发明结构简单、使用方便,避免了熔渣直接落在钢包车、渣车轨道上,提高了钢轨的在线使用寿命,减少了事故率。(A movable slag blocking device under a converter belongs to the technical field of converter production equipment and is used for blocking slag under the converter. The technical scheme is as follows: the slag trap is located the inboard of converter support basis barricade, the upper end of slag trap is rotatable coupling through articulated seat and converter support basis barricade upper end, slag trap face rear portion intermediate position has the articulated seat of push rod activity, the push rod front end is connected with the articulated seat of push rod activity, the body of rod of push rod passes the push rod hole of converter support basis barricade, the both ends of crank arm are connected with the rear end of push rod and the front end of cylinder push rod respectively through articulated seat, the centre of crank arm is connected with the articulated seat of crank arm rotation of fixing on the basis, the cylinder body pivot pin of cylinder is fixed with the outside lower part basis of converter support basis barricade through the articulated seat of cylinder fixed, form rotatable coupling. The invention has simple structure and convenient use, avoids slag from directly falling on the rail of the buggy ladle and the slag car, prolongs the online service life of the steel rail and reduces the accident rate.)

1. The utility model provides a movable pushing off slag device under converter, its characterized in that: it comprises a slag trap (1), a push rod (2), a crank arm (3), a cylinder (4), a slag trap fixed hinged seat (5), a push rod movable hinged seat (6), a crank arm rotating hinged seat (7), a crank arm movable hinged seat (8) and a cylinder fixed hinged seat (9), wherein the slag trap (1) is positioned at the inner side of a converter supporting foundation retaining wall (15), the upper end of the slag trap (1) is rotatably connected with the upper end of the converter supporting foundation retaining wall (15) through the slag trap fixed hinged seat (5), the middle position of the rear part of the surface of the slag trap (1) is fixedly provided with the push rod movable hinged seat (6), the front end of the push rod (2) is connected with the push rod movable hinged seat (6), the converter supporting foundation retaining wall (15) is provided with a horizontal push rod hole (16), the rod body of the push rod (2) penetrates through the push rod hole (16), the rear end of the push rod (2) is connected with the front end of the crank arm (3) through the crank arm movable, the rear end of the crank arm (3) is connected with the front end of the cylinder push rod through another crank arm movable hinge seat (8), the middle of the crank arm (3) is connected with a crank arm rotating hinge seat (7), the crank arm rotating hinge seat (7) is fixed on a pre-poured foundation, and a cylinder body shaft pin of the cylinder (4) is fixed with the lower foundation of the outer side of the converter supporting foundation retaining wall (15) through a cylinder fixing hinge seat (9) to form rotatable connection.

2. The movable slag stopper below a converter according to claim 1, wherein: the slag trap is characterized in that the slag trap comprises two slag trap fixing hinged seats (5), a push rod movable hinged seat (6), a crank arm rotating hinged seat (7), a crank arm movable hinged seat (8) and a cylinder fixing hinged seat (9), wherein the two slag trap fixing hinged seats (1), the push rod (2), the crank arm (3), the cylinder (4) and the crank arm rotating hinged seat (6) are respectively arranged on two converter supporting foundation retaining walls (15) below a converter (14), and the two devices act synchronously.

3. The movable slag stopper below a converter according to claim 1, wherein: the lower end of the slag baffle (1) is opposite to the upper end edge of the slag pot (10).

Technical Field

The invention relates to a device for pushing off slag under a converter, belonging to the technical field of converter production equipment.

Background

In the process of smelting in a converter, an oxygen lance enters the converter for oxygen blowing smelting, and because the smelting reaction is violent, a large amount of slag generated in the smelting process is inevitably blown out of a converter mouth and flows to the lower part of the converter, so that a large amount of slag is accumulated on the periphery of a ladle car and a slag car track under the converter. At present, a forklift is mainly used for periodically shoveling and cleaning high-temperature molten slag, so that the normal running of a ladle car and a slag car is not influenced by accumulated slag. However, in the smelting process, the existing high-temperature molten slag can damage ladle cars and slag car tracks under the furnace and cause thermal erosion to the foundation, so that the maintenance work is increased, and the shutdown maintenance time is longer. Meanwhile, in order to not influence the normal running of the buggy ladle and the slag car, the forklift must be used for timely cleaning, and a plurality of potential safety hazards exist in the operation under the forklift furnace. Therefore, the problem of high-temperature slag accumulation under the converter severely restricts the smooth production of converter steelmaking, and needs to be solved.

Disclosure of Invention

The invention aims to solve the technical problem of providing a movable slag stopping device under a converter, which can eliminate the damage of high-temperature slag to rails of a ladle car and a slag car under the converter and the thermal erosion to a foundation, greatly reduce the frequency of using a forklift to clean accumulated slag and eliminate potential safety hazards in online operation under the forklift furnace.

The technical scheme for solving the technical problems is as follows:

a movable slag stopping device under a converter furnace comprises a slag stopping plate, a push rod, a crank arm, an air cylinder, a slag stopping plate fixed hinged seat, a push rod movable hinged seat, a crank arm rotating hinged seat, a crank arm movable hinged seat and an air cylinder fixed hinged seat, wherein the slag stopping plate is positioned on the inner side of a converter supporting foundation retaining wall, the upper end of the slag stopping plate is rotatably connected with the upper end of the converter supporting foundation retaining wall through the slag stopping plate fixed hinged seat, the push rod movable hinged seat is fixedly installed at the middle position of the rear part of the surface of the slag stopping plate, the front end of a push rod is connected with the push rod movable hinged seat, a horizontal push rod hole is arranged on the converter supporting foundation retaining wall, the rod body of the push rod penetrates through the push rod hole, the rear end of the push rod is connected with the front end of the crank arm through the crank arm movable hinged seat, the rear end of the crank arm is connected with the front end of the air cylinder push rod through, the crank arm rotating hinged seat is fixed on a pre-poured foundation, and the rear end of the air cylinder is rotatably connected with the lower part of the outer side of the converter supporting foundation retaining wall through the air cylinder fixing hinged seat.

According to the movable slag blocking device under the converter, the two sets of slag blocking plates, the push rod, the crank arm, the air cylinder, the slag blocking plate fixed hinged seat, the push rod movable hinged seat, the crank arm rotating hinged seat, the crank arm movable hinged seat and the air cylinder fixed hinged seat are arranged, the two sets of devices are respectively arranged on the two converter supporting foundation blocking walls below the converter, and the two sets of devices act synchronously.

In the movable slag blocking device below the converter, the lower end of the slag blocking plate is opposite to the upper end edge of the slag pot.

The invention has the beneficial effects that:

the movable slag blocking devices are respectively arranged on two converter supporting foundation blocking walls below the converter, when the slag pot is positioned below the movable slag blocking devices, a push rod of an air cylinder extends out to push a crank arm to rotate, the front end of the crank arm pushes the push rod to move forwards, the front end of the push rod pushes a slag blocking plate to rotate, the lower end of the slag blocking plate inclines towards the slag pot, and molten slag enters the slag pot along the slag blocking plate; when the steel ladle enters the position below the converter, the push rod of the air cylinder is withdrawn, and the slag baffle plate is driven to rotate to the vertical position through the crank arm and the push rod, so that the steel ladle is not influenced to receive molten steel.

The slag ladle furnace has the advantages of simple structure and convenient use, realizes that the slag overflowing from the converter blowing mouth flows into the slag ladle through the flow guiding effect of the slag baffle plate, avoids the slag from directly falling on the rails of the ladle car and the slag car, prevents the rails from generating high-temperature deformation, prolongs the online service life of the steel rail, greatly reduces the frequency of using the forklift to clean the accumulated slag, eliminates the potential safety hazard in online operation under the forklift furnace, further reduces the accident rate, improves the operation rate and has obvious economic benefit.

Drawings

FIG. 1 is a schematic view of the present invention in a state of diverting slag to a slag pot;

FIG. 2 is a schematic view showing a state of the present invention when steel is received by a ladle.

The figures are labeled as follows: the slag-stopping device comprises a slag-stopping plate 1, a push rod 2, a crank arm 3, a cylinder 4, a slag-stopping plate fixed hinged seat 5, a push rod movable hinged seat 6, a crank arm rotating hinged seat 7, a crank arm movable hinged seat 8, a cylinder fixed hinged seat 9, a slag pot 10, a slag car 11, a steel ladle 12, a steel ladle car 13, a converter 14, a converter supporting foundation retaining wall 15 and a push rod hole 16.

Detailed Description

The slag-stopping device comprises a slag-stopping plate 1, a push rod 2, a crank arm 3, a cylinder 4, a slag-stopping plate fixed hinged seat 5, a push rod movable hinged seat 6, a crank arm rotating hinged seat 7, a crank arm movable hinged seat 8, a cylinder fixed hinged seat 9 and a fixing rod 17.

Fig. 1 and 2 show that the slag trap 1 is positioned at the inner side of the supporting foundation retaining wall 15 of the converter, the upper end of the slag trap 1 is rotatably connected with the upper end of the supporting foundation retaining wall 15 of the converter through a slag trap fixing hinged seat 5, the slag trap 1 is obliquely arranged when the slag ladle 10 is pushed into the lower part of the converter 14, the lower end of the slag trap 1 is opposite to the upper end edge of the slag ladle 10, and the slag flows into the slag ladle 10 along the slag trap 1; the slag trap 1 is in a vertical position when the ladle 12 is pushed below the converter 14, and does not interfere with the reception of molten steel by the ladle 12.

Fig. 1 and 2 show that a push rod movable hinge seat 6 is fixedly installed in the middle of the rear part of the surface of a slag trap 1, the front end of a push rod 2 is connected with the push rod movable hinge seat 6, a horizontal push rod hole 16 is formed in a converter supporting foundation retaining wall 15, a rod body of the push rod 2 penetrates through the push rod hole 16, and the rear end of the push rod 2 is connected with the front end of a crank arm 3 through a crank arm movable hinge seat 8. The crank arm 3 drives the push rod 2 to move back and forth, and the push rod 2 pushes the slag trap 1 to be in an inclined or vertical state.

Fig. 1 and 2 show that the rear end of the crank arm 3 is connected with the front end of the cylinder push rod through another crank arm movable hinge base 8, the middle of the crank arm 3 is connected with a crank arm rotating hinge base 7, the crank arm rotating hinge base 7 is fixed on a pre-poured basis, and the crank arm 3 rotates by taking the crank arm rotating hinge base 7 as a fulcrum, so that the push rod 2 and the slag trap 1 are pulled back and forth.

Fig. 1 and 2 show that the cylinder shaft pin of the cylinder 4 is fixed with the outer lower foundation of the converter supporting foundation retaining wall 15 through the cylinder fixing hinge seat 9 to form a rotatable connection. When the push rod of the cylinder 4 extends or retracts, the crank arm 3 is pushed to rotate, and the push rod 2 is pulled back and forth.

Fig. 1 and 2 show that two sets of slag trap 1, push rod 2, crank arm 3, cylinder 4, slag trap fixed hinged seat 5, push rod movable hinged seat 6, crank arm rotating hinged seat 7, crank arm movable hinged seat 8 and cylinder fixed hinged seat 9 are respectively arranged on two converter supporting foundation retaining walls 15 below a converter 14, and the two sets of devices synchronously act to enable the two slag traps 1 to be in an inclined state or a vertical state simultaneously.

The working process of the invention is as follows:

in the blowing process of the converter 14, a cylinder push rod of the cylinder 4 extends out to push the crank arm 3 to rotate around the crank arm rotation hinge base 7, the upper end of the crank arm 3 pushes the push rod 2 to move forwards, and the push rod 2 supports the slag blocking plate 1 to the inclined position of slag blocking. The slag car 11 carries the slag pot 10 to open to the standby position under the converter 14. The converter 14 carries out converting, the overflowed slag at the converter mouth falls, and the slag blocking plate 1 guides the slag to the slag tank 10. After the converter 14 finishes converting, the slag car 11 carries the slag pot 10 and is opened out of the lower position of the converter.

Before tapping, a cylinder push rod of the cylinder 4 is withdrawn, the crank arm 3 is pulled backwards, the crank arm 3 rotates around the crank arm to rotate the hinge base 7 reversely, the push rod 2 is pulled backwards at the upper end of the crank arm 3, and the push rod 2 withdraws the slag blocking plate 1 to a sagging position. Ladle car 13 carries ladle 12 to a receiving position below converter 14, converter 14 taps steel, and ladle 12 receives molten steel. After the converter 14 finishes tapping, the ladle car 13 carries the ladle 12 to be driven out, and the next cyclic production process of preparation, converting, slag tapping and tapping is carried out.

By adopting the invention, the overflowed slag at the converter mouth of the converter is guided by the slag baffle plate 1 and flows into the slag pot 10, the slag is prevented from directly falling on the rails of the buggy ladle 13 and the slag car 11, the rails are deformed at high temperature, the on-line service life of the steel rail is prolonged, the frequency of using a forklift to clean accumulated slag is greatly reduced, the potential safety hazard of on-line operation under the forklift furnace is eliminated, the accident rate is reduced, the operation rate is improved, and the economic benefit is obvious.

One embodiment of the invention is as follows:

the length of the slag trap 1 is 9000mm, the width of the slag trap is 2600mm, and the supporting structure is a single-side plate horizontal double support;

the diameter of the push rod 2 is 80mm, and the length is 4600 mm;

the length of the crank arm 3 is 2500 mm;

the model of the cylinder 4 is JB300 multiplied by 1200-B.