CN217724888U

CN217724888U - Ash discharging device of gravity dust collector of blast furnace

Info

Publication number: CN217724888U
Application number: CN202221254992.7U
Authority: CN
Inventors: 彭立红; 黄能钰; 张振; 董西南; 胡艳君; 管振威
Original assignee: Liuzhou Iron and Steel Co Ltd
Current assignee: Liuzhou Iron and Steel Co Ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-11-04
Anticipated expiration: 2032-05-24

Abstract

The utility model discloses a blast furnace gravity dust collector dust discharging device, pipeline one including ash bucket bottom setting, pipeline one is from last to having set gradually big ball valve and little ball valve down, ash bucket bottom side-opening pipeline two, pipeline two is from having set gradually big ball valve and little ball valve to down, under the little ball valve of pipeline two with the position under the pipeline a little ball valve is connected, under the little ball valve of pipeline one to with the position above the pipeline two junction is equipped with supplementary dust discharging device, supplementary dust discharging device includes the flange at both ends about the body, the lower part in the body is equipped with the round cushion cap, be equipped with the middle throttle orifice plate that has the orifice on the cushion cap. Compared with the prior art, the utility model, can solve the little ball valve in current gravity dust collector ash bin lower part and lead to the ball valve easily to blow the damage and blow and wear because of unloading grey in-process regulation ash volume, increase the problem of system's running cost.

Description

Ash discharging device of gravity dust collector of blast furnace

Technical Field

The utility model belongs to the technical field of steel manufacturing equipment technique and specifically relates to a device that is used for oblique ash of blast furnace gravity dust remover.

Background

The common ash unloading process of the current blast furnace gravity dust collector is a large and small ash unloading valve and humidifying ash discharging machine process, namely, the process comprises a first pipeline arranged at the bottom of an ash bucket, the first pipeline is provided with a large ball valve and a small ball valve from top to bottom, a second pipeline is arranged beside the bottom of the ash bucket, the second pipeline is provided with the large ball valve and the small ball valve from bottom to top, and the lower part of the second pipeline is connected with the lower part of the first pipeline and the lower part of the small ball valve. When the process is used for gravity dust removal and ash discharge, a small ball valve is usually used for adjusting the ash amount. Compared with the dust removal in the common environment, the blast furnace dust removal ash has the characteristics of high pressure, high iron content, large ash amount and the like. Therefore, in the ash discharging process, the small ball valve is locally subjected to long-term scouring to easily cause blowing damage and blowing through, so that the service life of the small ball valve is shortened, and the general service life of the small ball valve is only about two or three months to half a year; and meanwhile, the use cost caused by maintenance and replacement is also increased.

Disclosure of Invention

The utility model aims to solve the problem that a blast furnace gravity dust collector unloads grey device is provided to solve the little ball valve in current gravity dust collector ash storehouse lower part and result in the ball valve easily to blow the damage and blow and wear because of unloading grey in-process regulation ash volume, increase the problem of system's running cost.

In order to solve the above problem, the technical scheme of the utility model is that: this blast furnace gravity dust collector ash discharging device includes the pipeline one that ash bucket bottom set up, pipeline one is from last to having set gradually big ball valve and little ball valve down, other opening pipeline two in ash bucket bottom, pipeline two is from having set gradually big ball valve and little ball valve under to, under the little ball valve of pipeline two with the position under the little ball valve of pipeline is connected, under the little ball valve of pipeline one to with the position above the second junction of pipeline is equipped with supplementary ash discharging device, supplementary ash discharging device includes the flange at both ends about the body, the lower part in the body is equipped with the round cushion cap, be equipped with the orifice plate that has the orifice in the middle of the cushion cap.

In the above technical solution, a more specific solution may be: the auxiliary ash discharging device is arranged below the ball valve of the second pipeline and above the position connected with the pipeline.

And further: the lower end of the bearing platform is welded on the inner wall of the pipe body.

Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has:

the blast furnace gravity dust collector ash discharging device adopts the auxiliary ash discharging device added below the small ball valve, the ash discharging amount can be adjusted by changing the diameter of the central throttle round hole of the movable throttle orifice plate, the scouring point of the blast furnace gravity dust collection ash in the ash discharging process is changed, the small ball valve is directly and fully opened in the ash discharging process, the valve body is prevented from being scoured by ash flow, the service life of the small ball valve is prolonged, the operation of regulating the opening degree of the small ball valve during each ash discharging is cancelled, and the labor intensity of operators is reduced; when a fault occurs, the problems of foreign matters and coke blockage in the ash discharge process can be effectively solved by directly taking out the throttling orifice plate; the ash discharge amount is stable each time, the water regulating amount is fixed, secondary dust raising is avoided, and certain environmental protection benefit is achieved; after the device is used, the single-seat blast furnace gravity dust collector can reduce the cost of about 4.8 ten thousand spare parts every year, and the cost and the consumption of the spare parts are obviously reduced.

Drawings

Fig. 1 is a front view of an embodiment of the present invention;

FIG. 2 is a front view of an auxiliary dust discharging device according to an embodiment of the present invention;

fig. 3 is a top view of the auxiliary dust discharging device of the embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described in detail with reference to the accompanying drawings:

the ash discharging device of the blast furnace gravity dust collector shown in figures 1 to 3 comprises a first pipeline 2 arranged at the bottom of an ash bucket 1, wherein the first pipeline 2 is provided with a large ball valve 4 and a small ball valve 5 from top to bottom in sequence, a second pipeline 3 is arranged beside the ash bucket 1, the second pipeline 3 is provided with a large ball valve 4 and a small ball valve 5 from bottom to bottom in sequence, the lower part of a small ball valve of the second pipeline 3 is connected with the lower part of the small ball valve of the first pipeline 2, an auxiliary ash discharging device 6 is arranged at the position below the small ball valve of the first pipeline 2 and above the connection part with the second pipeline 3, the auxiliary ash discharging device 6 comprises flanges 6-2 at the upper end and the lower end of a pipe body 6-1, the auxiliary ash discharging device 6 is connected with the small ball valve 5 and the pipelines through the flanges 6-2, a bearing platform 6-3 is arranged at the lower part in the pipe body 6-1, the lower end of the bearing platform 6-3 is welded on the inner wall of the pipe body 6-1, a throttle orifice plate 6-3 with a throttle orifice 6-4 with a throttle orifice in the middle part, and the throttle orifice plate 6-3 can be adjusted by changing the diameter of the central throttle orifice plate orifice; an auxiliary ash discharge device 6 is also provided below the ball valve of the second pipe 3 to a position above the connection with the first pipe 2.

The blast furnace gravity dust collector ash discharging device adopts the auxiliary ash discharging device 6 which is additionally arranged below the small ball valve, the ash discharging amount can be adjusted by changing the diameter of the central orifice of the movable orifice plate, the scouring point of the blast furnace gravity dust collection ash in the ash discharging process is changed, the small ball valve 5 is directly and fully opened in the ash discharging process, the valve body is prevented from being scoured by ash flow, the service life of the small ball valve 5 is prolonged, the operation of regulating the opening of the small ball valve 5 by ash discharging every time is cancelled, and the labor intensity of operators is reduced; when a fault occurs, the problems of foreign matters and coke blockage in the ash discharge process can be effectively solved by directly taking out the throttling orifice plates 6-4; the ash discharge amount is stable each time, the water regulating amount is fixed, secondary dust raising is avoided, and certain environmental protection benefit is achieved; after the device is used, the single-seat blast furnace gravity dust collector can reduce the spare part cost by about 4.8 ten thousand yuan each year, and the spare part cost and the consumption are obviously reduced.

Claims

1. The utility model provides a blast furnace gravity dust collector dust discharging device, includes the pipeline one that ash bucket bottom set up, pipeline one is from last to having set gradually big ball valve and little ball valve down, the other pipeline two of opening in ash bucket bottom, pipeline two is followed and has set gradually big ball valve and little ball valve from extremely down, under the little ball valve of pipeline two with the position below a pipeline little ball valve is connected its characterized in that: an auxiliary ash discharging device is arranged below the ball valve of the first pipeline to a position above the connection position of the second pipeline, the auxiliary ash discharging device comprises flanges at the upper end and the lower end of the pipe body, a circle of bearing platform is arranged at the lower part in the pipe body, and a throttling orifice plate with a throttling hole in the middle is arranged on the bearing platform.

2. The blast furnace gravity dust collector ash discharge device according to claim 1, characterized in that: the auxiliary ash discharging device is arranged below the ball valve of the second pipeline and above the position connected with the pipeline.

3. The blast furnace gravity dust collector ash discharging device according to claim 1 or 2, characterized in that: the lower end of the bearing platform is welded on the inner wall of the pipe body.