CN210736809U

CN210736809U - Cover plate device for charging opening of furnace cover of LF (ladle furnace)

Info

Publication number: CN210736809U
Application number: CN201920848013.2U
Authority: CN
Inventors: 许晓伟; 邹文喜; 罗小云; 张桂宝; 祁战; 张平; 杜和平
Original assignee: Jiangyin Xingcheng Special Steel Works Co Ltd
Current assignee: Jiangyin Xingcheng Special Steel Works Co Ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-06-12
Anticipated expiration: 2029-06-06

Abstract

The utility model relates to a LF stove bell charge door apron device belongs to LF stove equipment technical field. The furnace cover is provided with a charging hole, a bottom plate is arranged on the charging hole, the bottom plate is fixed on the furnace cover, a charging through hole is formed in the bottom plate and matched with the charging hole, the bottom plate is hinged with a cover plate, and the cover plate is driven by a driving device to cover the charging through hole or open the charging through hole, so that the charging hole is closed or opened. The thickness of the bottom plate and the thickness of the cover plate are not less than 10 mm. The cover plate is controlled by the cylinder to rotate around the hinged point of the bottom plate and the cover plate, so that the cover plate covers the feeding through hole on the bottom plate to realize the closed state of the feeding opening or the cover plate is far away from the feeding through hole to realize the open state of the feeding opening. This application is simple structure not only, and the simple operation has reduced high-temperature gas and smoke and dust moreover and has overflowed from the bell charge door, has prolonged charging channel's life, has improved workshop operational environment.

Description

Cover plate device for charging opening of furnace cover of LF (ladle furnace)

Technical Field

The utility model relates to a LF stove bell charge door apron device belongs to LF stove equipment technical field.

Background

The LF ladle refining furnace water-cooled furnace cover is important equipment of the ladle refining furnace, after a ladle is opened into an LF ladle refining furnace treatment position, the water-cooled furnace cover is downwards covered on the ladle, a large amount of smoke generated in the treatment process enters a bag-type dust remover through the water-cooled furnace cover, a dust removal pipeline and the like to be purified, and then the smoke is discharged into the atmosphere through a fan, a silencer and a chimney. An alloy charging port is arranged on a furnace cover of the LF furnace, an inlet of the charging port is connected with a charging pipeline, and alloy enters a steel ladle through the charging pipeline and the charging port to achieve molten steel alloying. Under metallurgical condition, high temperature gas and flame can spill over through the charge door, lead to being close to the charge conduit of bell one side and easily burning loss, and life is short, and has a large amount of smoke and dust to pass through alloy pipeline and discharge, leads to the interior air circumstance of workshop abominable.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an LF stove bell charge door apron device is provided to above-mentioned prior art, not only simple structure, the simple operation prolongs charging pipeline life moreover, reduces the smoke and dust and spills over.

The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides a LF stove bell charge door apron device, includes the bell, set up the charge door on the bell, set up the bottom plate on the charge door, the bottom plate is fixed on the bell, set up reinforced through-hole on the bottom plate, reinforced through-hole and charge door phase-match, articulated apron on the bottom plate, apron are covered reinforced through-hole or are opened reinforced through-hole by the drive arrangement drive, realize closed or open the charge door.

The thickness of the bottom plate and the thickness of the cover plate are not less than 10 mm.

The driving device is an air cylinder.

Compared with the prior art, the utility model has the advantages of: the utility model provides a LF stove bell feed inlet apron device, rotates round the pin joint of bottom plate and apron through cylinder control apron for the apron covers the reinforced through-hole on the bottom plate and realizes the feed inlet closed condition or the apron keeps away from reinforced through-hole and realizes the feed inlet open mode. This application is simple structure not only, and the simple operation has reduced high-temperature gas and smoke and dust moreover and has overflowed from the bell charge door, has prolonged charging channel's life, has improved workshop operational environment.

Drawings

Fig. 1 is a schematic view of a cover plate device of a charging hole of a furnace cover of an LF furnace in an embodiment of the invention;

FIG. 2 is a schematic view of a closed charging hole in a cover plate device of a furnace cover of an LF furnace according to an embodiment of the present invention;

in the figure, a furnace cover 1, a feed inlet 2, a cover plate 3, a bottom plate 4 and a cylinder 5 are arranged.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1, the cover plate device for the charging hole of the furnace cover of the LF furnace in the embodiment includes a furnace cover 1, a charging hole 2 is arranged on the furnace cover 1, a bottom plate 4 with a thickness of 12mm is covered on the charging hole 2, the bottom plate 4 is fixed on the furnace cover 1, and a charging through hole matched with the charging hole 2 is arranged on the bottom plate 4, so that the charging hole 2 is in an open state. The bottom plate 4 is provided with the cylinder 5, the cylinder body of the cylinder 5 is fixed on the bottom plate 4, the bottom plate 4 is hinged with the cover plate 3 with the thickness of 15mm, and the extension rod of the cylinder 5 is fixedly connected with the cover plate 3. When 5 extension bars of cylinder retract, drive apron 3 and rotate round the pin joint for apron 3 is the dislocation form with bottom plate 4, and feeding through hole is not sheltered from by apron 3, realizes that charge door 2 is in open state, and the LF stove is in and adds alloy material state. As shown in figure 2, when the extension rod of the cylinder 5 extends out, the feeding through hole is covered by the cover plate 3, so that the feeding port 2 is in a closed state, and the LF furnace is in a refining process. At this moment, the condition that high-temperature gas and smoke and dust spill over from bell 1 charge door 2 has been reduced, not only prevents that the charging conduit from being burnt, has improved the life of charging conduit, and has improved operational environment.

The contact surfaces of the bottom plate 4 and the cover plate 3 are required to be milled flat and the burrs are ground so as to reduce the friction resistance and ensure that the cylinder 5 pushes the cover plate 3 smoothly. In the normal refining process of LF stove, apron 3 keeps charge door closed state, and it overflows through bell 1 charge door 2 to reduce high-temperature gas and smoke and dust. Before LF stove alloy is reinforced, keep away from charge door 2 through cylinder 5 control apron 3, make charge door 2 open completely not sheltered from, treat that alloy skip is reinforced to finish and after no residual alloy in the pipeline, cover charge door 2 through cylinder 5 control apron 3 again.

In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. The utility model provides a LF stove bell charge door apron device, includes bell (1), offer charge door (2), its characterized in that on bell (1): set up bottom plate (4) on charge door (2), bottom plate (4) are fixed on bell (1), set up reinforced through-hole on bottom plate (4), reinforced through-hole and charge door (2) phase-match, articulated apron (3) on bottom plate (4), apron (3) are driven by drive arrangement and are covered reinforced through-hole or open reinforced through-hole, realize apron (3) closure or open the charge door.

2. The cover plate device for the furnace cover and the charging hole of the LF furnace as claimed in claim 1, wherein: the thickness of the bottom plate (4) and the thickness of the cover plate (3) are not less than 10 mm.

3. The cover plate device for the furnace cover and the charging hole of the LF furnace as claimed in claim 1, wherein: the driving device is a cylinder (5).