Accurate throwing equipment for slag stopping balls of converter

Abstract

The utility model relates to accurate throwing equipment for slag stopping balls of a converter, and belongs to the technical field of converter smelting equipment. According to the technical scheme, a slag stopping ball conveying arm (5) is of a closed sliding way structure, a positioning backing ring (8) is welded to the front end of the slag stopping ball conveying arm (5), and a slag stopping ball fixing groove (6) is formed in the end, away from the positioning backing ring (8), of the slag stopping ball conveying arm (5); the booster (7) is arranged between the slag stopping ball conveying arm (5) and the slag stopping ball fixing groove (6), the direction pushing handle (11) is arranged at the tail end of the slag stopping ball conveying arm (5), a button is installed on the direction pushing handle (11), and the booster (7) is controlled through the button. The slag stopping device has the beneficial effects that the slag stopping operation difficulty and the labor intensity are reduced, the slag stopping success rate is improved, the occurrence of slag stopping under molten steel is reduced, the purity of the molten steel is improved, the quality of the molten steel is guaranteed, and the device is small in occupied area, simple in structure, convenient to operate, safe and low in maintenance cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to a converter slag stopping ball accurate throwing equipment belongs to converter smelting equipment technical field. BACKGROUND

[0002] Slag stopping tapping is one of necessary means to improve the purity of molten steel. Its purpose is to facilitate accurate control of molten steel composition, effectively reduce molten steel back phosphorus, improve alloy element absorption rate, reduce alloy consumption; it is beneficial to reduce the content of inclusions in steel and improve the ladle refining effect; at the same time, it also improves the service life of the converter tapping hole.

[0003] The density of the slag stopping ball is between molten steel and slag, and it is thrown into the vicinity of the tapping hole in the furnace at the end of the tapping, and as the molten steel surface decreases, the slag stopping ball sinks to block the tapping hole, avoiding the molten slag into the ladle.

[0004] At present, the main steel grades produced in Tangshan Steel Plate Mill are ship plate, container steel, weathering steel and other variety steels. The main method of slag stopping in daily production is using sliding plate. However, due to the strict requirement of variety steel on P and the sliding plate equipment, on average, about 3200 tons of cast slab is caused by slag back phosphorus, resulting in high P content of molten steel and steel grade reclassification, accounting for about 0.12% of the monthly waste rate reduction ratio. Therefore, the slag stopping mode of using sliding plate + slag stopping ball is used. The single weight of the slag stopping ball is 18 kg, and the labor intensity of manual throwing is high, which easily pulls the throwing personnel to the furnace opening, and there is a great safety hazard. SUMMARY

[0005] The utility model aims at providing a converter slag stopping ball accurate throwing equipment, by adopting the slag stopping ball conveying arm and the booster, the difficulty and labor intensity of slag stopping operation are reduced, the success rate of slag stopping is improved, the occurrence of molten steel slagging is reduced, the purity of molten steel is improved, the quality of molten steel is guaranteed, the device occupies small area, the structure is simple, the operation is convenient, safe, the maintenance cost is low, the above problems existing in the background art are solved.

[0006] The technical scheme of the utility model is: a converter slag stopping ball accurate throwing equipment, containing steering wheel, frame, anti-splashing heat shield, eye protection window mirror, slag stopping ball conveying arm, slag stopping ball fixed groove, booster, positioning support ring and direction pushing handle, the steering wheel is arranged on both sides of the frame, and the slag stopping ball conveying arm is installed on the frame; the slag stopping ball conveying arm is a closed slide structure, the positioning support ring is welded at the front end of the slag stopping ball conveying arm, and the slag stopping ball fixed groove is arranged at the end of the slag stopping ball conveying arm away from the positioning support ring; the booster is arranged between the slag stopping ball conveying arm and the slag stopping ball fixed groove, the direction pushing handle is arranged at the end of the slag stopping ball conveying arm, a button is installed on the direction pushing handle, and the booster is controlled through the button; the anti-splashing heat shield is installed at the rear of the slag stopping ball conveying arm and in front of the direction pushing handle, and the eye protection window mirror is embedded on the anti-splashing heat shield.

[0007] The laser positioning device is further provided with a display screen, and the display screen is installed on the splash-proof heat insulation plate.

[0008] The inner wall of the slide of the slag ball conveying arm is smooth and has a size matched with the slag ball, and the angle between the slag ball conveying arm and the horizontal plane is 30 degrees in a natural state.

[0009] The rotation angle of the steering wheel is in the range of 0-45 degrees, and the distance between the steering wheel and the direction pushing handle is 600 mm.

[0010] The distance between the splash-proof heat insulation plate and the direction pushing handle is 250 mm, and the eye protection window mirror is in a vertical rectangular shape and has a size of 180*100 mm.

[0011] The slag ball conveying arm and the slag ball fixing groove are connected through stainless steel welding rods.

[0012] The fixed support is further provided, and the fixed support is welded below the tail of the slag ball conveying arm.

[0013] The slag ball conveying arm and the booster are adopted, the difficulty and labor intensity of slag blocking operation are reduced, the slag blocking success rate is improved, the occurrence of molten steel slag is reduced, the purity of molten steel is improved, the quality of molten steel is ensured, the device has small land occupation, simple structure, convenient operation, safety and low maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the front view of the utility model;

[0015] Figure 2 is the local schematic view of the steering wheel of the utility model;

[0016] Figure 3 is the top view of the utility model;

[0017] Figure 4 is the local schematic view of the splash-proof heat insulation plate of the utility model;

[0018] In the drawing: the steering wheel 1, the frame 2, the splash-proof heat insulation plate 3, the eye protection window mirror 4, the slag ball conveying arm 5, the slag ball fixing groove 6, the booster 7, the positioning supporting ring 8, the fixed support 9, the laser positioning device 10, the display screen 101, the direction pushing handle 11. DETAILED DESCRIPTION

[0019] In order to make the utility model embodiment purposes, technical schemes and advantages more clearly, the following will be combined with the drawings in the embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, the embodiment expressed is a part of the embodiment of the utility model, not all the embodiments, all other embodiments obtained by the ordinary skilled in the art without making creative labor based on the embodiment in the utility model, belong to the protection scope of the utility model.

[0020] A converter slag stopping ball accurate throwing equipment, containing steering wheel 1, frame 2, splash-proof heat shield 3, eye protection window mirror 4, slag stopping ball conveying arm 5, slag stopping ball fixed groove 6, booster 7, positioning support ring 8 and direction push handle 11, steering wheel 1 is arranged at both sides of frame 2, and slag stopping ball conveying arm 5 is installed on frame 2;Slag stopping ball conveying arm 5 is a closed slide structure, positioning support ring 8 is welded to the front end of slag stopping ball conveying arm 5, and slag stopping ball fixed groove 6 is arranged at the end of slag stopping ball conveying arm 5 away from positioning support ring 8;Booster 7 is arranged between slag stopping ball conveying arm 5 and slag stopping ball fixed groove 6, direction push handle 11 is arranged at the end of slag stopping ball conveying arm 5, button is installed on direction push handle 11, and booster 7 is controlled through the button;Splash-proof heat shield 3 is installed at the rear of slag stopping ball conveying arm 5 and located in front of direction push handle 11, and eye protection window mirror 4 is inlaid on splash-proof heat shield 3.

[0021] It further comprises a laser positioning device 10, wherein the laser positioning device 10 is provided with a display screen 101, and the display screen 101 is installed on the splash-proof heat shield 3.

[0022] The inner wall of the slide of the slag stopping ball conveying arm 5 is smooth and has a size matched with the slag stopping ball, and the horizontal angle between the slag stopping ball conveying arm 5 and the horizontal plane is 30° in a natural state.

[0023] The rotation angle of the steering wheel 1 is in the range of 0-45°, and the distance between the steering wheel 1 and the direction push handle 11 is 600 mm.

[0024] The distance between the splash-proof heat shield 3 and the direction push handle 11 is 250 mm, the eye protection window mirror (4) is in the shape of an upright rectangle, and has a size of 180*100 mm.

[0025] The slag stopping ball conveying arm 5 and the slag stopping ball fixed groove 6 are connected by stainless steel welding rods.

[0026] The utility model further comprises a fixed support 9, wherein the fixed support 9 is welded below the tail of the slag stopping ball conveying arm 5.

[0027] In practical application, the inner wall of the slag ball conveying arm 5 slide is smooth and the size matches the slag ball; the steering wheel 1 is arranged on both sides of the frame 2, and the distance from the direction pushing handle 11 is 600 mm; the splash-proof heat insulation plate 3 is 250 mm away from the direction pushing handle 11, the eye protection window mirror 4 is embedded on the splash-proof heat insulation plate 3, which is convenient for the operator to observe the situation in the furnace; the positioning support ring 8 is welded at the front end of the slag ball conveying arm 5; the slag ball fixing groove 6 and the slag ball conveying arm 5 are welded by stainless steel welding rod, and are polished smooth; the booster 7 is effectively controlled by a button, and the button is installed on the direction pushing handle 11; after starting the button, the slag ball falls into the specified position in the furnace through the slag ball conveying arm 5 under the action of the booster 7.

[0028] Before tapping, the slag ball is placed on the slag ball fixing groove 6, and after the converter tapping, the frame 2 is pushed, the steering wheel 1 is moved to insert the slag ball into the position above the tapping hole from the converter opening, and after the position is accurately positioned by the laser positioning device 10 and the display screen 101 displays that the position has been reached, the slag ball conveying arm 5 is lifted to a certain angle, the slag ball automatically slides into the tapping hole, and the frame 2 is withdrawn outside the furnace. By using the property that the specific gravity of the slag ball is between steel and slag, the slag is effectively blocked.

[0029] The existing method is used to measure the lifting point of the slag ball and the tapping hole, so as to ensure that the slag ball is aligned with the tapping hole. In this way, the frame 2 will not swing left and right, and the slag blocking hit rate is improved. The fixed support 9 is welded at the tail of the slag ball conveying arm 5, which is convenient for stable placement and pushing of the frame 2.

[0030] The above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A device for accurate dosing of a slag stopper ball in a converter, characterized in that The application relates to a slag ball conveying device, which comprises a steering wheel (1), a frame (2), a splash-proof heat insulation plate (3), a window mirror (4), a slag ball conveying arm (5), a slag ball fixing groove (6), a booster (7), a positioning supporting ring (8) and a direction pushing handle (11), the steering wheel (1) is arranged on both sides of the frame (2), and the slag ball conveying arm (5) is installed on the frame (2); the slag ball conveying arm (5) is a closed slide structure, the positioning supporting ring (8) is welded to the front end of the slag ball conveying arm (5), the slag ball fixing groove (6) is arranged at the end of the slag ball conveying arm (5) away from the positioning supporting ring (8); the booster (7) is arranged between the slag ball conveying arm (5) and the slag ball fixing groove (6), the direction pushing handle (11) is arranged at the tail end of the slag ball conveying arm (5), a button is installed on the direction pushing handle (11), and the booster (7) is controlled through the button; the splash-proof heat insulation plate (3) is installed at the rear part of the slag ball conveying arm (5) and located in front of the direction pushing handle (11), and the window mirror (4) is inlaid on the splash-proof heat insulation plate (3).

2. A device for accurate dosing of a slag stopper ball in a converter according to claim 1, characterized in that The device further comprises a laser positioning device (10), the laser positioning device (10) is provided with a display screen (101), and the display screen (101) is installed on the splash-proof heat insulation plate (3).

3. The device for accurate dosing of a slag stopper ball for a converter according to claim 1, characterized in that: The inner wall of the slide of the slag ball conveying arm (5) is smooth, and the size is matched with the slag ball; and in a natural state, the horizontal angle between the slag ball conveying arm (5) and the horizontal plane is 30 DEG.

4. The device for accurate dosing of a slag stopper ball for a converter according to claim 1, characterized in that: The rotating angle of the steering wheel (1) is in the range of 0-45 DEG, and the distance between the steering wheel (1) and the direction pushing handle (11) is 600 mm.

5. The device for accurate dosing of a slag stopper ball for a converter according to claim 1, characterized in that: The slag ball conveying arm (5) and the slag ball fixing groove (6) are connected through stainless steel welding rods.

6. A device for accurate dosing of a slag stopper ball for a converter according to claim 1, characterized in that The device further comprises a fixing support (9), and the fixing support (9) is welded below the tail part of the slag ball conveying arm (5).

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