阅读说明：本技术 一种气吹式除鳞箱装置 (Air-blowing descaling box device ) 是由 张鹏 魏泽华 潘华 刘旭 于 2021-08-30 设计创作，主要内容包括：本发明涉及一种气吹式除鳞箱装置,包括：除鳞箱,具有空腔结构,内部设置上喷嘴和导流板,导流板竖向设置,并且向着上喷嘴的一侧倾斜；导流板设置若干,并在同一方向上间隔设置,在所沿方向上一侧的第一导流板与上喷嘴相邻,与第一导流板相邻的第二导流板与除鳞箱的顶部设置间距,第二导流板的顶部相对于两侧的导流板偏向下设置,上喷嘴的出气口位于第一导流板底部水平面的下方,上喷嘴的出气方向朝向导流板一侧倾斜。进行钢坯吹扫,减轻加热炉氧化铁皮的量,降低劳动强度。能够有效防止氧化铁皮四处飞溅。(The invention relates to an air-blowing descaling box device, comprising: the descaling box is provided with a cavity structure, an upper nozzle and a guide plate are arranged inside the descaling box, and the guide plate is vertically arranged and inclines towards one side of the upper nozzle; the guide plate sets up a plurality ofly to interval setting in same direction, the first guide plate of one side is adjacent with last nozzle on the direction of following, and the second guide plate adjacent with first guide plate sets up the interval with the top of descaling the case, and the top of second guide plate sets up downwards for the guide plate of both sides partially, and the gas outlet of going up the nozzle is located the below of first guide plate bottom horizontal plane, goes up the direction of giving vent to anger of nozzle and inclines towards guide plate one side. And billet purging is carried out, so that the amount of the oxide scales of the heating furnace is reduced, and the labor intensity is reduced. Can effectively prevent the iron scale from splashing everywhere.)

1. The utility model provides an air-blowing type descaling box device which characterized in that: the method comprises the following steps:

the descaling box is provided with a cavity structure, an upper nozzle and a guide plate are arranged inside the descaling box, and the guide plate is vertically arranged and inclines towards one side of the upper nozzle;

the guide plate sets up a plurality ofly to interval setting in same direction, the first guide plate of one side is adjacent with last nozzle on the direction of following, and the second guide plate adjacent with first guide plate sets up the interval with the top of descaling the case, and the top of second guide plate sets up downwards for the guide plate of both sides partially, and the gas outlet of going up the nozzle is located the below of first guide plate bottom horizontal plane, goes up the direction of giving vent to anger of nozzle and inclines towards guide plate one side.

2. The air-blowing type descaling box apparatus of claim 1, wherein: the first guide plate is connected with the top of the descaling box;

or the two ends of the second guide plate are connected with the side wall of the descaling box.

3. The air-blowing type descaling box apparatus of claim 1, wherein: the guide plate adjacent to the second guide plate is a third guide plate, the third guide plate is positioned on one side far away from the first guide plate, and the third guide plate is arranged at a distance from the top of the descaling box or is connected with the top of the descaling box.

4. The air-blowing type descaling box apparatus of claim 1, wherein: the horizontal distance between the adjacent guide plates is 250-320 mm; preferably 290-310 mm.

5. The air-blowing type descaling box apparatus of claim 1, wherein: the acute angle included by the guide plate relative to the top of the descaling box is 55-65 degrees; further 60 °;

or the acute angle between the nozzle and the top of the descaling box is 50-60 degrees; and further 55.

6. The air-blowing type descaling box apparatus of claim 1, wherein: the nozzle assembly further comprises a left nozzle and a right nozzle which are arranged oppositely, a space is reserved between the left nozzle and the right nozzle, and the left nozzle and the right nozzle are located below the lower nozzle.

7. The air-blowing type descaling box apparatus of claim 6, wherein: the air outlet directions of the air outlets of the left nozzle and the right nozzle are respectively the same as the air outlet direction of the upper nozzle;

furthermore, the inclination angle of the air outlet direction of the left nozzle relative to the vertical direction is 6-8 degrees.

8. The air-blowing type descaling box apparatus of claim 6, wherein: still include the inlet duct, the inlet duct is connected with last nozzle, left nozzle and right nozzle respectively.

9. The air-blowing type descaling box apparatus of claim 1, wherein: the descaling box is provided with an inlet and an outlet which are opposite, the inlet is arranged on the opposite side of the inclined direction of the guide plate, and a trumpet-shaped guide plate is arranged outside the inlet.

10. The air-blowing type descaling box apparatus of claim 1, wherein: and a chain door curtain is arranged in the descaling box and close to the introducing port.

Technical Field

The invention belongs to the technical field of blowing descaling of continuous casting billets, and particularly relates to an air-blowing type descaling box device.

Background

The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.

Before the continuous casting billet enters the heating furnace, the casting billet is contacted with air at a higher temperature, and a layer of iron oxide scale is formed on the surface of the casting billet, so that the heat transfer of the heating furnace to the continuous casting billet is influenced, and meanwhile, the pollution to the environment in the heating furnace is also aggravated, so that the production cost is increased, and the economic benefit is reduced.

The existing method for treating the iron scale on the surface of the continuous casting billet sprays the continuous casting billet to the surface of the continuous casting billet by using high-pressure water, and the iron scale is cooled and broken by water, so that the effect of removing the iron scale is achieved. However, when the scale is removed by using water, a large amount of scale removing water and scale are generated, and the generated scale removing water is subjected to special treatment.

Disclosure of Invention

In view of the above problems in the prior art, it is an object of the present invention to provide an air-blowing type descaling box apparatus. Can effectively remove the iron scale and prevent the iron scale from splashing.

In order to solve the technical problems, the technical scheme of the invention is as follows:

an air-blown descaling box apparatus comprising:

the descaling box is provided with a cavity structure, an upper nozzle and a guide plate are arranged inside the descaling box, and the guide plate is vertically arranged and inclines towards one side of the upper nozzle;

the guide plate sets up a plurality ofly to interval setting in same direction, the first guide plate of one side is adjacent with last nozzle on the direction of following, and the second guide plate adjacent with first guide plate sets up the interval with the top of descaling the case, and the top of second guide plate sets up downwards for the guide plate of both sides partially, and the gas outlet of going up the nozzle is located the below of first guide plate bottom horizontal plane, goes up the direction of giving vent to anger of nozzle and inclines towards guide plate one side.

Present device that utilizes water under high pressure to descale, mainly utilize water under high pressure to strike the iron scale, then utilize rivers to take away the iron scale, but at the operation in-process of reality, but under the impact of high-pressure rivers, rivers touch behind the object because reaction force, will produce and splash, and rivers splash and fall behind a position, can take the iron scale directly to adhere to at that position, can't make the iron scale collect, and have the water of iron scale, still need carry out subsequent water treatment process, because some elements can be dissolved in the aquatic, just can discharge after handling.

According to the air-blowing type descaling box device, the iron scale is removed by using air only, the blown-up iron scale gradually falls to the bottom of the descaling box along with the flowing of wind, the iron scale can be removed cleanly, the iron scale cannot remain in the descaling box, the air flow and the iron scale are separated easily, and complicated subsequent processing steps are not needed.

One or more technical schemes of the invention have the following beneficial effects:

(1) before the continuous casting billet enters the heating furnace, the air-blowing descaling box device provided by the invention is used for blowing the billet, so that the amount of the oxide scale of the heating furnace is reduced, and the labor intensity is reduced.

(2) Through setting up guide plate and chain door curtain at the descaling incasement, through the cooperation setting of last nozzle and guide plate, can let the iron scale take place orderly flow along with the flow direction of wind, then is being flowed downwards by the wind pressure, separation iron scale and descaling case, wind and iron scale separation at last are favorable to the collection of iron scale, and the in-process that the iron scale that drives at wind flows can effectively prevent that the iron scale from splashing everywhere.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the invention and not to limit the invention.

FIG. 1 is an isometric view of an air-blown descaling box;

FIG. 2 is a front view of the air-blown descaling box;

FIG. 3 is a side view of the air-blown descaling box;

FIG. 4 is a top view of the air-blown descaling box;

FIG. 5 is a cross-sectional view taken along A-A of FIG. 2;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 7 is a cross-sectional view taken along the line C-C of FIG. 4;

FIG. 8 is a schematic view of the inner section of a continuous casting billet passing through a dephosphorization box body;

FIG. 9 is a schematic view of the movement of gas through a baffle;

FIG. 10 is a schematic view of gas flow through a nozzle;

wherein, 1, a descaling box cover; 2, a descaling box; 3-chain door curtain; 4-an air inlet duct; 5-left nozzle; 6, an upper nozzle; 7-a deflector; 8, continuously casting a blank; 9-a guide plate; 10-a scaffold; 11-a baffle plate; 12-a roller bed; 13-iron scale collecting device.

Detailed Description

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

An air-blown descaling box apparatus comprising:

the descaling box is provided with a cavity structure, an upper nozzle and a guide plate are arranged inside the descaling box, and the guide plate is vertically arranged and inclines towards one side of the upper nozzle;

the guide plate sets up a plurality ofly to interval setting in same direction, the first guide plate of one side is adjacent with last nozzle on the direction of following, and the second guide plate adjacent with first guide plate sets up the interval with the top of descaling the case, and the top of second guide plate sets up downwards for the guide plate of both sides partially, and the gas outlet of going up the nozzle is located the below of first guide plate bottom horizontal plane, goes up the direction of giving vent to anger of nozzle and inclines towards guide plate one side.

In some embodiments of the invention, the first baffle is attached to the top of the descaling tank.

In some embodiments of the invention, the second baffle is attached at both ends to the side walls of the descaling box.

In some embodiments of the invention, the baffle adjacent to the second baffle is a third baffle, the third baffle is located on a side away from the first baffle, and the third baffle is spaced from or connected to the top of the descaling box.

In some embodiments of the invention, the acute angle enclosed by the deflector relative to the top of the descaling box is 55-65 °; and further 60.

In some embodiments of the invention, the upper nozzle is at an acute angle of 50-60 ° relative to the top of the descaling box; and further 55.

In some embodiments of the invention, the device further comprises a left nozzle and a right nozzle which are oppositely arranged, a space is arranged between the left nozzle and the right nozzle, and the left nozzle and the right nozzle are positioned below the lower nozzle.

Furthermore, the air outlet directions of the air outlets of the left nozzle and the right nozzle are respectively the same as the air outlet direction of the upper nozzle; furthermore, the angle of inclination of the air outlet direction of the left nozzle relative to the vertical direction is 6-8 degrees.

Furthermore, the left nozzle and the right nozzle are symmetrically arranged relative to the arrangement direction of the guide plates.

In some embodiments of the invention, the air inlet pipeline is further included, and the air inlet pipeline is respectively connected with the upper nozzle, the left nozzle and the right nozzle.

In some embodiments of the present invention, the descaling box is provided with an inlet and an outlet which are opposite to each other, the inlet is provided on the opposite side of the inclination direction of the guide plate, and the guide plate is provided with a trumpet-shaped guide plate on the outer side of the inlet. The inlet and outlet are opposed to a space between the left nozzle and the right nozzle.

In some embodiments of the invention, a chain curtain is disposed inside the descaling box at a position close to the introducing port.

As shown in fig. 7 and 8, the present invention relates to an air-blowing type descaling box apparatus, comprising: the descaling box 2 is of a cavity structure, an upper nozzle 6 and a guide plate 7 are arranged inside the descaling box, and the guide plate 7 is vertically arranged and inclines towards one side of the upper nozzle 6; the guide plate sets up a plurality ofly to interval setting in same direction, the first guide plate of one side is adjacent with last nozzle in the direction of following, and the second guide plate adjacent with first guide plate sets up the interval with the top of descaling box 2, and the top of second guide plate sets up downwards for the guide plate of both sides partially, and the gas outlet of going up nozzle 6 is located the below of first guide plate bottom horizontal plane, goes up the direction of giving vent to anger of nozzle 6 and inclines towards guide plate 7 one side.

As shown in fig. 8 and 9, after the continuous casting slab enters the descaling box 2, in the air flow direction above the continuous casting slab, the air outlet of the upper nozzle 6 is located below the horizontal plane at the bottom of the first guide plate, so that the air flow sprayed by the upper nozzle 6 can be sprayed out towards the oblique lower side of the first guide plate, which is equivalent to the air flow blocked by the first guide plate, the air flow is prevented from flowing upwards and then meets the continuous casting slab, so that the iron oxide scales on the continuous casting slab are blown up, the air flow can be blown up towards the oblique upper side after meeting the continuous casting slab, because the guide plates 7 are arranged at intervals, the air flow meets the top of the descaling box 2, then, because the second guide plate has a distance from the top of the descaling box 2, the air flow can flow towards the oblique lower side, and then meets a third guide plate (located at the side of the second guide plate far from the first guide plate) adjacent to the second guide plate in the arrangement direction sequence, after being blocked by the third guide plate, the air flows obliquely downwards in the opposite direction, and finally the air flow gradually flows to the bottom of the descaling box 2 with the iron scales.

In the invention, a plurality of guide plates (more than or equal to three) are arranged, because the airflow turns back, namely meets the top of the descaling box once and then reaches the bottom of the descaling box, the process of the iron oxide scale is that the iron oxide scale is firstly rolled up between a first guide plate and a second guide plate to achieve the separation effect of the iron oxide scale and a continuous casting billet, then the rolled iron oxide scale gradually forms orderly flow under the action of blocking when meeting the top of the descaling box and under the driving of wind, then the rolled iron oxide scale meets a third guide plate (namely a third guide plate except the first guide plate and the second guide plate), changes direction and then enters the bottom of the descaling box, so that the process of the separation-blowing-falling of the iron oxide scale can be achieved if the three guide plates are arranged, and if a plurality of guide plates are arranged, the rear side (far away from the side of the second guide plate) of the third guide plate of other guide plates are arranged, if set up two guide plates, though the wind energy after the top from the descaling box is enough to the decurrent direction flow, but wind can meet the object of slant below and then make the iron scale quilt arouse, can produce and splash, is unfavorable for the collection of iron scale and collides with descending wind, and in the descaling box, the iron scale can splash everywhere. Therefore, three guide plates can be arranged in the invention, and the inclination directions of the three guide plates are all towards the direction of the upper nozzle, so that the flowing direction of the final wind is directed downwards and directly enters the lower part of the descaling box.

The continuous casting billet cannot rotate inside the descaling box.

As seen from figure 2, the inclination direction of the guide plate 7 is beneficial to the collection of the iron scales and prevents the iron scales from splashing everywhere, the space between the guide plates 7 can prevent the iron scales from splashing everywhere, and the direction of the guide plate can ensure that the iron scales finally walk along a specified route and are finally collected.

Further, the first guide plate is connected with the top of the descaling box 2. First guide plate plays the effect that blocks, and it does not set up the interval with the top of descaling box 2 because when the air current meets the top of descaling box, the air current encircles at the top of descaling box, and first guide plate is close with this wind phase, if first guide plate sets up the interval with the top of descaling box, may let wind partly from the clearance outflow, is unfavorable for the collection of iron oxide scale.

Furthermore, both ends of the second guide plate are connected with the side wall of the descaling box. And the two ends of the second guide plate are fixedly connected with the descaling box, so that the stability is improved.

Furthermore, the guide plate adjacent to the second guide plate is a third guide plate, the third guide plate is positioned on one side far away from the first guide plate, and the third guide plate is arranged at a distance from the top of the descaling box or is connected with the top of the descaling box.

Further, the horizontal distance between the adjacent guide plates is 250-320 mm; preferably 290-310 mm. The interval that adjacent guide plate set up, can guarantee that wind can certain angle flow to guide plate 7 on, and be favorable to the collection of the oxide scale that carries in the wind, if third guide plate and second guide plate can lead to wind to flow to the third guide plate far away, the interval guarantees the bottom that wind reachs the third guide plate moreover, the angle of the wind through third guide plate baffling is more below partially like this, direct downflow, and can not bump with the second guide plate. The direct interval of first guide plate and second guide plate can guarantee the certain velocity of flow of wind, and the velocity of flow of avoiding wind slows down great, leads to the carrying effect of iron scale relatively poor, and the iron scale splashes everywhere.

Further, the included acute angle of the guide plate 7 relative to the top of the descaling box 2 is 55-65 degrees; and further 60. The scale can be gathered better, the wind speed is kept, and the scale is prevented from splashing around.

Further, the included acute angle of the upper nozzle 7 relative to the top of the descaling box 2 is 50-60 degrees; and further 55. And the air guide plate is matched with the air guide plate, so that the better flow direction of the blown iron scale and the subsequent air can be kept.

As shown in fig. 3, 5 and 9, further, the device further comprises a left nozzle 5 and a right nozzle which are oppositely arranged, wherein a space is arranged between the left nozzle 5 and the right nozzle, and the left nozzle 5 and the right nozzle are positioned below the lower nozzle. Left side nozzle 5 and right nozzle are used for getting rid of the iron scale of the left and right sides of continuous casting billet 8, have the interval between left side nozzle 5 and the right nozzle, and the continuous casting billet is convenient for get rid of the iron scale from the position process between left side nozzle and the right nozzle.

Furthermore, the air outlet directions of the air outlets of the left nozzle 5 and the right nozzle are respectively the same as the air outlet direction of the upper nozzle; still further, the angle of inclination of the air outlet direction of the left nozzle 5 with respect to the vertical direction is 6-8 °. The upper nozzle 6 is matched with the left nozzle and the right nozzle, and can remove the iron oxide scales on the surfaces of the continuous casting billets in an all-around manner. The left and right nozzles are inclined at the same angle, so that the scale can be directly blown obliquely downward, as shown in fig. 10. The air outlet direction of the left nozzle and the air outlet direction of the right nozzle are consistent with the air flow direction above the continuous casting billet, and the stability of the whole air flow is guaranteed.

Further, the left nozzle 5 and the right nozzle are symmetrically arranged with respect to the arrangement direction of the guide plates.

Further, the air inlet pipeline 4 is further included, and the air inlet pipeline 4 is connected with the upper nozzle 6, the left nozzle 5 and the right nozzle respectively. The air inlet duct 4 introduces an air flow.

Further, a baffle plate 11 is arranged at the lower part of the descaling box, and the baffle plate 11 is positioned below the left nozzle and the right nozzle.

As shown in fig. 1 and 2, the descaling box 2 is provided with an inlet and an outlet which are opposed to each other, the inlet is provided on the opposite side of the guide plate in the inclination direction, and a guide plate 9 having a trumpet shape is provided outside the inlet. Is beneficial to leading in the continuous casting billet 8, and the continuous casting billet 8 enters the descaling box from the leading-in port.

The inlet and outlet ports are opposed to a space sandwiched by the left and right nozzles. The continuous casting billet just moves along the space among the guide inlet, the guide outlet, the left nozzle and the right nozzle.

Further, a roller way 12 is arranged outside the leading-out port. The roller way is used for bearing and conveying the continuous casting billets coming out of the descaling box.

Further, as shown in fig. 6 and 7, a chain curtain 3 is provided inside the descaling box 2 at a position close to the introduction port. When the continuous casting billet 8 enters the air-blowing type descaling box and the iron oxide scale which is easy to fall off is treated before the nozzle is used for purging, the subsequent purging by using the nozzle is facilitated.

Further, the bottom of the descaling box is provided with an air outlet, and the air outlet is provided with a blocking net. And an iron scale collecting device 13 is arranged below the air outlet, and after the iron scale at the bottom of the descaling box reaches a certain amount, the blocking net is opened to discharge the iron scale.

The top of the descaling box 2 is provided with a descaling box cover 1 to form a closed space and prevent airflow from overflowing. The outer bottom of the descaling box is provided with a bracket 10.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.