CN216550517U

CN216550517U - Improve life's hot metal pretreatment jetting device

Info

Publication number: CN216550517U
Application number: CN202122634093.1U
Authority: CN
Inventors: 陈晨; 孙晓辉; 董博; 尚德义; 黄岩; 齐金生; 吴玉治
Original assignee: Angang Steel Co Ltd
Current assignee: Angang Steel Co Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-05-17
Anticipated expiration: 2031-10-29

Abstract

The utility model relates to a molten iron pretreatment injection device with prolonged service life, which comprises a desulfurization spray gun, the spray gun surges, desulfurization spray gun passes through platform well head lift operation with the spray gun surges, desulfurization spray gun sets up the middle part at the platform well head, the limit portion of spray gun setting at the platform well head surges, desulfurization spray gun includes fixed connection's desulfurization pipe and desulfurization spray tube, the periphery of desulfurization pipe bottom is equipped with the toper overcoat, last shrouding and desulfurization pipe connection are passed through to the top of toper overcoat, the bottom of toper overcoat is connected with the desulfurization spray tube through shrouding down, the spray gun surges that includes flange joint moves the rifle top tube and surges the rifle lower tube, the bottom periphery equipartition arc riser of surging the rifle top tube, the outward flange of arc riser surpasss the edge of surging the rifle top tube and surging the flange between the rifle lower tube, the top of platform well head is followed the peripheral ring of platform well head and is established the well head upper edge, the interior surface on edge is personally submitted the bevel down and is connected with the top edge of platform well head. The utility model improves the service life of the gun body.

Description

Improve life's hot metal pretreatment jetting device

Technical Field

The utility model relates to the field of steelmaking equipment, in particular to a molten iron pretreatment injection device with prolonged service life.

Background

After the hot metal is pretreated and desulfurized, a large amount of desulfurized slag is formed in the hot metal ladle, and in order to prevent resulfurization and molten metal loss, the amount of charged iron is reduced while removing the desulfurized slag by some means. The high productivity is required in industrial production, in order to move the slag in the hot-metal ladle to the slag skimming plate, the spray gun is arranged above the hot-metal ladle, nitrogen is injected in the slag skimming process, surging slag pushing is formed in the hot-metal ladle, the slag is convenient to skimming rapidly, the slag-iron separation is effectively promoted, and the slag skimming iron loss is reduced. In the field production, a desulfurization spray gun, a temperature measuring gun, a sampling gun and one or two surging spray guns need to be fixedly arranged at the well mouth of the platform, in order to ensure the safety of manual gun penetration after the spray guns are used at each time, the longest diameter of the well mouth of the platform is not more than 1.5 m, therefore, the operating space of the surging spray gun is limited, and meanwhile, in order to ensure the surging effect, the surging spray gun can only be arranged at the edge of the well mouth of the platform, therefore, in the using process of the surging spray gun, once the gun body shakes in the operating process, the gun body can collide with the edge of the well mouth of the platform, and serious accidents such as the breakage of the gun body, the gun bending and even the damage of a blowing system are caused.

Disclosure of Invention

The utility model aims to provide a molten iron pretreatment injection device with prolonged service life and improved molten iron pretreatment operation rate.

In order to realize the purpose, the utility model adopts the following technical scheme:

a molten iron pretreatment injection device with prolonged service life, which comprises a desulfurization spray gun, the spray gun surges, the desulfurization spray gun with gush the spray gun and pass through platform well head lift operation, the desulfurization spray gun sets up the middle part at the platform well head, gush the limit portion that the spray gun set up at the platform well head, the desulfurization spray gun includes fixed connection's desulfurization pipe and desulfurization spray tube, the periphery of desulfurization pipe bottom is equipped with the toper overcoat, the top of toper overcoat is passed through last shrouding and is connected with the desulfurization pipe, the bottom of toper overcoat is connected with the desulfurization spray tube through shrouding down, gush the gush rifle top tube that the spray gun includes flange connection and gushes the rifle lower tube, gush the bottom periphery equipartition arc riser of rifle top tube, the outward flange of arc riser surpasss the edge of gushing the rifle top tube and gushing the flange between the rifle lower tube, the top of platform well head is followed the peripheral ring of platform well head and is established the edge on the well head, the internal surface on the well head is the bevel down and is connected with the top of platform well head.

The conical outer sleeve is conical or square conical.

The outer diameter of the lower sealing plate is larger than that of the desulfurization spray pipe.

The number of the arc-shaped vertical plates is 3-4.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model has simple structure, reasonable design and simple and convenient maintenance, avoids the serious accidents caused by the collision of the desulfurization spray gun and the surging spray gun, prolongs the service life of the gun body and improves the operation rate of the molten iron pretreatment.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is an enlarged view of fig. 1 at B.

FIG. 4 is a top view of the surge torch.

In the figure: desulfurization spray gun 1, surge spray gun 2, platform well head 3, desulfurization pipe 4, desulfurization spray tube 5, toper overcoat 6, go up shrouding 7, lower shrouding 8, surge rifle top tube 9, surge rifle lower tube 10, arc riser 11, well head upper edge 12.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings:

as shown in fig. 1-3, a molten iron pretreatment blowing device with improved service life comprises a desulfurization spray gun 1 and an upwelling spray gun 2, wherein the desulfurization spray gun 1 and the upwelling spray gun 2 are lifted through a platform wellhead 3, the desulfurization spray gun 1 is arranged in the middle of the platform wellhead 3, the upwelling spray gun 2 is arranged at the edge of the platform wellhead 3, the desulfurization spray gun 1 comprises a desulfurization guide pipe 4 and a desulfurization spray pipe 5 which are fixedly connected, a conical outer sleeve 6 is arranged on the periphery of the bottom of the desulfurization guide pipe 4, the top of the conical outer sleeve 6 is connected with the desulfurization guide pipe 4 through an upper seal plate 7, and the bottom of the conical outer sleeve 6 is connected with the desulfurization spray pipe 5 through a lower seal plate 8; the conical outer sleeve 6 is conical or square conical, and the outer diameter of the lower sealing plate is larger than that of the desulfurization spray pipe. Rock when desulfurization spray gun 1 and surging spray gun 2 operation in-process, when colliding each other, toper overcoat 6 plays the cushioning effect, and desulfurization spray gun 1 and surging spray gun 2 are direct contact not, avoid damaging.

The surging spray gun 2 comprises a surging gun upper pipe 9 and a surging gun lower pipe 10 which are connected through flanges, arc-shaped vertical plates 11 are uniformly distributed on the periphery of the bottom of the surging gun upper pipe 9, and the number of the arc-shaped vertical plates 11 is 3-4. The outer edge of the arc-shaped vertical plate 11 exceeds the edge of the flange between the upper surge gun pipe 9 and the lower surge gun pipe 10. When surging 2 lifting process of spray gun and taking place to rock, in case bump with the platform well head, the arc riser contacts with platform well head 3 earlier to guarantee that the protection surmounts spray gun 2 and smoothly passes through platform well head 3, prevent surmounting 2 body fracture of the rifle, curved rifle of spray gun.

The top of the platform wellhead 3 is provided with a wellhead upper edge 12 along the periphery of the platform wellhead 3 in a surrounding way, and the inner surface of the wellhead upper edge 12 is connected with the upper edge of the platform wellhead 3 in a downward inclined way. In the descending process of the surging spray gun 2, the inner surface of the wellhead upper edge 12 is an inclined surface, and when the head of the surging spray gun 2 collides with the periphery of the platform wellhead 3, the surging spray gun 2 can smoothly descend.

In the above embodiments, it is obvious to those skilled in the art that the present invention can be modified and modified without departing from the principle of the present invention, and the modified and modified embodiments also fall within the protection scope of the appended claims. The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and their concepts of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides an improve molten iron preliminary treatment jetting device of life, a serial communication port, including the desulfurization spray gun, surge the spray gun, desulfurization spray gun and surge the spray gun and pass through platform well head lift operation, the desulfurization spray gun sets up the middle part at the platform well head, surge the spray gun setting at the limit portion of platform well head, the desulfurization spray gun includes fixed connection's desulfurization pipe and desulfurization spray tube, the periphery of desulfurization pipe bottom is equipped with the toper overcoat, the top of toper overcoat is connected with the desulfurization pipe through the upper seal plate, the bottom of toper overcoat is connected with the desulfurization spray tube through lower seal plate, surge the spray gun includes the surge rifle top tube and the surge rifle low tube of flange joint, the bottom periphery equipartition arc riser of surge rifle top tube, the outward flange edge between the rifle top tube and the surge rifle low tube is surpassed to the outward flange of arc riser, the top of platform well head encircles along platform well head periphery and establishes well head upper edge, the inner surface of the upper edge of the wellhead is connected with the upper edge of the platform wellhead in an inclined downward manner.

2. The hot metal pretreatment blowing device with the improved service life according to claim 1, wherein the tapered outer sleeve is conical or square-tapered.

3. The hot metal pretreatment injection device with the improved service life according to claim 1, wherein the outer diameter of the lower sealing plate is larger than that of the desulfurization spray pipe.

4. The hot metal pretreatment spraying device with the service life prolonged as claimed in claim 1, wherein the number of the arc-shaped vertical plates is 3-4.