Water-cooled furnace cover of ladle refining furnace

Abstract

The utility model relates to the field of metallurgical equipment, in particular to a water-cooled furnace cover of a ladle refining furnace, which comprises a furnace cover lifting upright post, the hanging bracket is arranged on the furnace cover lifting stand column; the furnace cover body is arranged on the hanging bracket, the furnace cover body is of an inverted bowl-shaped structure, seamless steel pipes are densely arranged and welded to form the furnace cover body, and an upper exhaust fume collecting hood is arranged on the upper portion of the furnace cover body; the dust removal flue is arranged on the upper exhaust fume collecting hood; the receiving hopper is arranged on the furnace cover body, the receiving hopper is formed by welding steel plates, and the interior of the receiving hopper is a special-shaped cavity; and the furnace door opening and closing mechanism is arranged on the furnace cover body and used for closing the bottom opening of the upper exhaust fume collecting hood. The refining water-cooling furnace cover is convenient to use and replace, long in service life, low in accident rate, high in reliability and more environmentally friendly.

Description

TECHNICAL FIELD

[0001] The utility model relates to metallurgical equipment field especially relates to a ladle refining furnace water -cooled furnace cover. BACKGROUND

[0002] At present, the water-cooled furnace cover of the steelmaking refining furnace at home and abroad is mainly in the form of circular step ladder type, and is welded by closely arranging seamless steel pipes, and when local water leakage occurs, the furnace cover needs to be replaced as a whole. There is no furnace cover horizontal adjusting device, which is easy to cause the sinking head phenomenon, affecting the ladle car to drive in and drive out. At the same time, the smoke gas of the receiving pipe lacks plugging, the smoke gas overflows, the environmental protection performance is poor and the upper belt conveyor is easy to burn. The furnace door opening and closing structure is a horizontal push-pull type structure driven by a pneumatic cylinder, which is easy to cause the deformation of the pneumatic cylinder lever and the burning of the sealing element under high temperature. The water-cooled furnace cover of the refining furnace currently used online needs to be frequently replaced, so that the service life of the furnace cover is short, the replacement rate of spare parts is high, and the operation cost is increased. SUMMARY

[0003] The utility model aims at the problem of short service life of the furnace cover and inconvenient maintenance in the background art, and provides a ladle refining furnace water-cooled furnace cover.

[0004] The technical scheme of the utility model: a ladle refining furnace water-cooled furnace cover, comprising:

[0005] A furnace cover lifting column;

[0006] A hanging bracket arranged on the furnace cover lifting column;

[0007] A furnace cover body arranged on the hanging bracket, the furnace cover body is in the form of a bowl-shaped structure with a reverse buckle, the furnace cover body is welded by closely arranging seamless steel pipes, and an upper smoke collecting hood is arranged on the upper part of the furnace cover body;

[0008] A dust removal flue arranged on the upper smoke collecting hood;

[0009] A receiving hopper arranged on the furnace cover body, the receiving hopper is welded by steel plates and has a special-shaped cavity inside;

[0010] And a furnace door opening and closing mechanism arranged on the furnace cover body and used for closing the bottom opening of the upper smoke collecting hood.

[0011] Preferably, the hanging bracket is connected with the furnace cover lifting column through a plurality of jackscrews.

[0012] Preferably, the furnace cover body and the hanging bracket are connected through welding.

[0013] Preferably, a water-cooled distribution pipe is arranged on the furnace cover body.

[0014] Preferably, a skirt is formed on the bottom of the furnace cover body, a secondary flue is arranged on the skirt in communication, and the secondary flue is in communication with the dust removal flue.

[0015] Preferably, the receiving hopper bottom is provided with a chute extending into the furnace cover body.

[0016] Preferably, the receiving hopper is provided with a blocking mechanism blocking the top opening of the chute.

[0017] Preferably, the furnace door opening and closing mechanism comprises a heat shield support provided on the furnace cover body, a cylinder provided on the heat shield support, a chain connected to the bottom telescopic end of the cylinder, a directional pulley connected to the chain, and a furnace door cover slidingly connected to the upper fume hood, and the directional pulley is connected to the furnace door.

[0018] Compared with the prior art, the utility model has the following beneficial technical effects:

[0019] 1. The furnace cover body structure is a large circular arc "inverted bowl type" structure, which can make the furnace cover evenly heated in the molten steel radiation area, increase the volume space of the body, and ensure the dust removal effect. The large circular arc structure has no corner and dead point, less slag sticking, and easy cleaning. At the same time, the lower part of the furnace cover is provided with a "skirt" auxiliary flue for collecting smoke gas at the ladle opening, which ensures the dust removal effect.

[0020] 2. The furnace cover can meet the single block replacement when the furnace cover is locally burned and leaked and cannot be repaired during smelting of the refining furnace.

[0021] 3. The furnace cover can be adjusted horizontally to ensure the horizontal degree of the furnace cover, and there is no "sunken head" phenomenon, which ensures the operation of the ladle car.

[0022] 4. The furnace door structure is provided as an upper pulling type structure, the cylinder is away from the high temperature area and is heat shielded, the service life of the cylinder is prolonged, and the downtime and replacement of spare parts are reduced.

[0023] 5. The "bell" hopper structure is used at the feeding chute to block the high temperature smoke gas, protect the belt conveyor, prolong the service life of the belt conveyor, save the operation cost, and meet the environmental protection requirements. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic view of an embodiment of the utility model;

[0025] Figure 2 It is an A-A sectional view of Figure 1

[0026] Figure 3 It is a B-B sectional view of Figure 1

[0027] Reference signs: 1, furnace cover lifting column; 2, top wire; 3, hanging bracket; 4, water cooling distribution pipe; 5, furnace cover body; 6, upper fume hood; 7, dust removal flue; 8, receiving hopper; 9, chute; 10, furnace door opening and closing mechanism; 11, auxiliary flue. DETAILED DESCRIPTION ​​

[0028] Example 1

[0029] like Figures 1-3 As shown, the present invention proposes a water-cooled furnace cover for a ladle refining furnace, comprising:

[0030] Furnace cover lifting column 1;

[0031] Hanger 3 is installed on furnace cover lifting column 1;

[0032] The furnace cover body 5 is mounted on the hanger 3. The furnace cover body 5 is an inverted bowl-shaped structure. The furnace cover body 5 is made of seamless steel pipes closely welded together. An upper smoke hood 6 is installed on the upper part of the furnace cover body 5. The upper smoke hood 6 is connected to the furnace cover body 5 through a flange. It can be installed and replaced independently.

[0033] Dust removal flue 7 is installed on the upper smoke collection hood 6;

[0034] The receiving hopper 8 is installed on the furnace cover body 5. The receiving hopper 8 is welded from steel plates and has an irregularly shaped cavity inside.

[0035] And a furnace door opening and closing mechanism 10, which is installed on the furnace cover body 5 to close the bottom opening of the upper smoke hood 6.

[0036] Example 2

[0037] like Figures 1-3 As shown, this utility model proposes a water-cooled furnace cover for a ladle refining furnace. Compared with Embodiment 1, this embodiment details the relevant structural details.

[0038] The hanger 3 is connected to the furnace cover lifting column 1 via multiple set screws 2, and the level of the furnace cover body 5 is adjusted by the set screws 2. The furnace cover body 5 and the hanger 3 are connected by welding. A water-cooled distribution pipe 4 is installed on the furnace cover body 5. A skirt is formed at the bottom of the furnace cover body 5, and a secondary flue 11 is connected to the skirt. The secondary flue 11 is connected to the dust removal flue 7. A chute 9 is installed at the bottom of the receiving hopper 8 at an angle, and the chute 9 extends into the furnace cover body 5.

[0039] Example 3

[0040] like Figures 1-3 As shown, the present invention proposes a water-cooled furnace cover for a ladle refining furnace. Compared with Embodiment 1 or Embodiment 2, this embodiment details the structure of the sealing mechanism and the furnace door opening and closing mechanism 10.

[0041] The receiving hopper 8 is provided with a blocking mechanism for blocking the top opening of the spout 9, which comprises a cylinder arranged on the receiving hopper 8, a chain connected to the bottom telescopic end of the cylinder, and a ball connected to the chain, which is used to block the top opening of the spout 9.

[0042] The furnace door opening and closing mechanism 10 comprises a heat insulation protection bracket arranged on the furnace cover body 5, a cylinder arranged on the heat insulation protection bracket, a chain connected to the bottom telescopic end of the cylinder, a directional pulley connected to the chain, and a furnace door cover slidingly connected to the upper fume hood 6, and the directional pulley is connected to the furnace door; when the furnace door is opened, the chain is driven by the cylinder to drive the furnace door cover to rise through the directional pulley, and an operator operates; when the furnace door cover is lowered, the cylinder rod is extended, and the furnace door cover is lowered into place.

[0043] In summary, in the utility model, the furnace cover can be replaced in parts when it leaks, so that the furnace cover does not need to be replaced as a whole, the service life of the furnace cover is prolonged, and the replacement cost of spare parts is reduced; and the high-temperature fume of the spout 9 is blocked, so that the high-temperature fume is prevented from overflowing, and the service life of the upper belt conveyor belt is prolonged.

[0044] The above describes the embodiments of the utility model in detail in combination with the drawings, but the utility model is not limited to this, and various changes can be made within the knowledge range of those skilled in the art without departing from the purpose of the utility model.

Claims

1. A water-cooled ladle furnace cover characterized by, The utility model relates to a kind of furnace cover lifting column (1) comprising: Hanging bracket (3) is arranged on furnace cover lifting column (1); Furnace cover body (5) is arranged on hanging bracket (3), and furnace cover body (5) is inverted bowl structure, and furnace cover body (5) is welded with seamless steel tube dense row, and upper collecting fume cover (6) is arranged on the upper portion of furnace cover body (5); Dust removal flue (7) is arranged on upper collecting fume cover (6); Receiving hopper (8) is arranged on furnace cover body (5), and receiving hopper (8) is welded by steel plate and the inside is special-shaped cavity; And furnace door opening and closing mechanism (10) is arranged on furnace cover body (5) to close the bottom opening of upper collecting fume cover (6). Hanging bracket (3) is connected by multiple jackscrews (2) and furnace cover lifting column (1).

2. The ladle furnace water cooled lid according to claim 1, characterized in that Furnace cover body (5) and hanging bracket (3) are connected by welding.

3. The ladle furnace water cooled lid according to claim 1, characterized in that, Water cooling distribution pipe (4) is arranged on furnace cover body (5).

4. The ladle furnace water cooled lid according to claim 1, characterized in that, Skirt is formed on the bottom of furnace cover body (5), and vice flue (11) is communicated and arranged on the skirt, and vice flue (11) is communicated with dust removal flue (7).

5. The ladle furnace water cooled lid according to claim 1, characterized in that, Slopingly setting chute (9) is arranged on the bottom of receiving hopper (8), and chute (9) extends into furnace cover body (5).

6. The ladle furnace water cooled lid of claim 1 wherein, Sealing mechanism is arranged on receiving hopper (8) to close the top opening of chute (9).

7. The ladle furnace water cooled lid of claim 1 wherein, Furnace door opening and closing mechanism (10) includes heat insulation protection bracket arranged on furnace cover body (5), cylinder arranged on heat insulation protection bracket, chain connected with the bottom telescopic end of cylinder, directional pulley connected with chain, and furnace door cover slidingly connected with upper collecting fume cover (6), and directional pulley is connected with furnace door.

8. The ladle furnace water cooled lid of claim 1 wherein, ​

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