CN105651070B - Mobile molten iron rolls over tank smoke collecting cover - Google Patents

Abstract

The invention provides a mobile molten iron folding tank fume collection cover, which includes a supporting frame, a fixed cover, a moving cover, an air duct, and a moving mechanism, wherein: the supporting frame is connected on the ground for providing the collection The overall support of the cover; the air duct is placed above the supporting frame for transporting the smoke generated when the molten iron is folded; one end of the fixed cover communicates with the air duct for connecting with the mobile The covers together form a negative pressure sealed chamber to draw away the fume generated when the molten iron is folded; The moving cover can move relative to the fixed cover for the smoke generated when the molten iron is folded; the moving mechanism is connected with the moving cover and can drive the moving cover to move back and forth. The invention solves the problem that the flue gas is relatively large when the molten iron is folded in the iron and steel factory area and the steelmaking plant area, which causes the flue gas discharge in the factory building to exceed the standard and affects the working environment.

Description

Mobile molten iron folding tank fume collection hood

technical field

The invention relates to the technical field of iron and steel metallurgical machinery and equipment, in particular to a mobile molten iron folding tank fume collection cover.

Background technique

Laiwu Iron and Steel Yinshan section steel steelmaking workshop plans to build 3 molten iron pouring points, the pouring points are on the south and north sides of the mixed iron furnace. When the molten iron is poured, a large amount of smoke and dust will overflow, and the smoke will flow into the factory building, which will seriously affect the workshop and the surrounding environment, and seriously endanger the health of the operating staff. Shandong Iron and Steel Laiwu Steel Group Steelworks requires the collection rate of flue gas to reach over 98% when the molten iron is folded due to the requirement of environmental protection in the production process. Meet the needs of the field and production environment.

Due to production needs, the section steel mill has arranged ladle folding cans on the north and south sides of the mixed iron furnace. No dust removal facilities are designed for the folding cans. Smoke was coming from the roof above, and the smoke permeated the workshop, affecting the working environment in this area. It is urgent to install new dust removal facilities in this area to eliminate environmental hazards.

Contents of the invention

The object of the present invention is to provide a mobile fume collecting hood for folding molten iron cans, which can effectively collect the fume generated when the molten iron is folded.

In order to achieve the above object, the present invention provides the following technical solutions:

A mobile molten iron folding tank fume collection hood, including a support frame, a fixed cover, a moving cover, an air duct, and a moving mechanism, wherein: the support frame is connected on the ground to provide the overall control of the collection hood. Support; the air duct is placed above the supporting frame for transporting the smoke generated when the molten iron is folded; one end of the fixed cover communicates with the air duct and is used to form a joint with the moving cover The negative pressure sealed cavity sucks away the fume generated when the molten iron is folded; the moving cover communicates with the other end of the fixed cover, and the moving cover is placed above the support frame to capture the molten iron The moving cover can move relative to the fixed cover for the smoke generated when the can is folded; the moving mechanism is connected with the moving cover and can drive the moving cover to move back and forth.

Further, in the above-mentioned mobile molten iron folding pot smoke collection hood, the moving mechanism includes a girder, an electric reducer, a driving wheel and a driven wheel, the driving wheel is controlled to rotate by the electric reducer, and the driving The wheel drives the driven wheel to rotate, the driving wheel and the driven wheel are both connected to the girder and can drive the girder to move, and one end of the girder is connected to the moving cover.

Further, in the above-mentioned mobile molten iron folding pot smoke collection hood, the moving mechanism further includes a walking positioner, and the walking positioner is connected to both the girder and the support frame.

Further, in the above-mentioned mobile molten iron folding pot fume collection hood, there are two walking positioners.

Further, in the above-mentioned mobile molten iron folding tank fume collection hood, the moving mechanism also includes a movement limiter and a striker, the striker is connected to the other end of the girder, and the movement limiter is connected to on the supporting frame.

Further, in the above-mentioned mobile molten iron folding pot fume collection hood, the movement limit is composed of a movement extension limit and a movement retraction limit.

Further, in the above-mentioned mobile molten iron folding pot fume collection hood, a dust removal air valve is arranged in the air duct.

Further, in the above-mentioned mobile molten iron folding pot fume collection cover, the dust removal damper is arranged in one end of the air pipe connected to the fixed cover.

Further, in the above-mentioned mobile molten iron folding pot smoke collection hood, the mobile hood is composed of a rear sealing plate, a front sealing plate, a top sealing plate and two side sealing plates, wherein the front sealing plate is partially open.

Further, in the above-mentioned mobile molten iron folding pot smoke collection hood, a refractory and heat-insulating layer is laid on the inner side of the cover body of the mobile hood.

It can be seen from the analysis that the present invention discloses a mobile molten iron folding tank flue gas collection cover, which solves the problem that the flue gas is relatively large when the molten iron is folded in the iron and steel plant area and the steelmaking plant area, causing the flue gas emission in the factory to exceed the standard and affecting the working environment. .

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. in:

Fig. 1 is the schematic diagram of an embodiment of the present invention;

Fig. 2 is a schematic diagram of a moving mechanism according to an embodiment of the present invention.

Explanation of reference signs: 1 moving cover; 2 fixed cover; 3 dust removal air valve; 4 air pipe; 5 moving mechanism; 6 moving out limit; 7 moving retract limit; 11 electric reducer; 12 driving wheel; 13 travel locator; 14 driven wheel; 15 hit iron.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

As shown in Figures 1 to 2, according to an embodiment of the present invention, a mobile molten iron folding tank fume collection cover is provided, including a support frame 8, a fixed cover 2, a moving cover 1, an air duct 4, and a moving mechanism 5, wherein: the support frame 8 is connected on the ground 9 to provide overall support for the capture cover, the support frame 8 is formed by connecting at least four columns and two horizontal columns to form a cubic structure; the air duct 4 Placed above the support frame 8, it is used to transport the smoke generated when the molten iron is folded; one end of the fixed cover 2 is connected to the air duct 4, and is used to form a negative pressure sealed cavity together with the movable cover 1 to remove the molten iron when the can is folded The generated flue gas; the fixed cover 2 can be welded on the air duct 4 . The mobile cover 1 communicates with the other end of the fixed cover 2, the mobile cover 1 is placed above the support frame 8, and is used to capture the smoke generated when the molten iron is folded, and the mobile cover 1 can be opposite to the fixed cover. 2 moves. Preferably, the outside of the fixed cover 2 is placed inside the movable cover 1, and the outer shape of the fixed cover 2 is matched with the inner shape of the movable cover 1 to facilitate the movement of the movable cover 1 relative to the fixed cover 2. When the movable cover 1 moved, the fit gap between the outside of the fixed cover 2 and the inboard of the movable cover 1 was 1 millimeter, and under the negative pressure effect of the dust removal air valve 3 opening, it was ensured that no smoke gas overflowed.

The moving cover 1 can move relative to the fixed cover 2; the moving mechanism 5 is connected with the moving cover 1 and can drive the moving cover 1 to move back and forth. In FIG. 1 , the movable cover 1 moves back and forth in the horizontal direction relative to the fixed cover 2 .

Preferably, the moving mechanism 5 includes a girder 10, an electric speed reducer 11, a driving wheel 12 and a driven wheel 14, the driving wheel 12 is controlled to rotate by the electric speed reducer 11, the driving wheel 12 drives the driven wheel 14 to rotate, and the driving wheel 12 and the driven wheel 14 Both are connected on the girder 10 and can drive the girder 10 to move. The girder 10 is welded with the movable cover 1. The movable cover 1 can be welded with the waist of the girder 10 of the moving mechanism 5. The lower part of the fixed cover 2 is fixed on the support frame 8. above the column.

The driving wheel 12 and the driven wheel 14 are installed on the girder 10 and are positioned at the upper end of the cross column of the support frame 8 . The electric reducer 11 is installed on the girder 10 to drive the driving wheel 12 to run synchronously with the girder 10 . Preferably, a moving cover counterweight is provided at the other end of the girder 10 to balance the capture cover when the moving cover 1 moves.

Preferably, it also includes a walking locator 13, the walking locator 13 is connected with the girder 10 and the support frame 8, the walking locator 13 is installed on the side of the girder, and when the girder 10 walks on the support frame 8, the deflection of the girder 10 can be controlled. Moving, two walking positioners 13 can be provided, which are arranged along the moving direction of the moving cover 1, so as to better control the deviation of the girder 10.

Preferably, it also includes a movement limiter and a striker 15, the striker 15 is connected to the other end of the girder 10, the movement limiter is connected to the support frame 8, the striker 15 is installed under the girder 10, and collides with the movement limiter Finally, the in-place stop function of the mobile cover 1 is realized.

Preferably, the movement limit is composed of a movement extension limit 6 and a movement retraction limit 7. The movement extension limit 6 and the movement retraction limit 7 can be welded to the lower end of the cross column above the support frame 8, and the movement The extension limit 6 and the movement retraction limit 7 control the stroke of the movable cover 1. During application, the striker 15 is located between the movement extension limit 6 and the movement retraction limit 7.

Preferably, a dust removal air valve 3 is arranged in the air duct 4, the dust removal air valve 3 is installed on the air duct 4 with a flange, the air duct 4 is welded and installed on the fixed cover 2, and the dust removal air valve 3 is preferably arranged on the air duct 4. In the end connected with the fixed cover 2, the dust removal air valve 3 can be controlled remotely, so that the operation of flue gas collection is simple.

Preferably, the mobile cover 1 is composed of a rear sealing plate, a front sealing plate, a top sealing plate and two side sealing plates, wherein the longitudinal section of the top sealing plate can be arc-shaped, and the front sealing plate is partly open, that is, the lower part of the front sealing plate There is an opening to ensure that the molten iron tank and the plate hook can enter the mobile cover 1 to pour molten iron and the ladle can enter and exit the mobile cover 1 freely. Cross arm then is outside mobile cover 1 all the time. There is a flue gas discharge port communicating with the fixed cover 2 on the rear sealing plate. When collecting flue gas, below the cover opening formed by the mobile cover 1 are molten iron tanks and molten iron ladles.

Preferably, a fire-resistant and heat-insulating layer is laid on the inner side of the cover body of the mobile cover 1. Since the working area of the collecting cover works at high temperature, a fire-resistant and heat-insulating layer is laid on the inside of the entire mobile cover 1, which has a good heat insulation effect and can reduce the cost of the factory building. The internal temperature can significantly improve the working conditions of workers, and at the same time prevent the deformation of the capture cover caused by radiant heat baking due to high internal temperature.

Use process: After the molten iron is transported, align the molten iron tank with the mobile cover 1. Before the molten iron is folded, the mobile cover 1 is stretched out through the moving mechanism 5 (enlarging the dust collection area of the collection cover), and the dust removal air valve 3 is opened. After the dust removal air valve 3 is opened, the suction force of the dust removal fan makes the cavity between the movable cover 1 and the fixed cover 2 form a negative pressure. The flue gas produced by the oxidation reaction during folding cans is introduced into the fixed cover 2 and the dust removal damper 3 through the negative pressure of the mobile cover 1, and then the flue gas is sent to the dust collector through the air pipe 4 (the flue gas and dust removal main pipe DN2400). After folding the can, the mobile cover 1 returns to the original place and closes the dust removal air valve 3.

From the above description, it can be seen that the above-mentioned embodiments of the present invention have achieved the following technical effects:

The dust-laden fume generated by the molten iron folding tank is collected by using the fume collection hood, which can meet the environmental protection requirements of the site;

The mobile cover 1 is connected with the mobile mechanism 5 and can move forward and backward without occupying the production space on site;

The moving mechanism 5 is provided with a pulley (driving wheel 12 and driven wheel 14) and a walking locator 13, which ensures the stability of the moving cover 1 running;

The flue gas collection hood can effectively block the interference of the transverse wind in the workshop, and the hood structure forms a diversion effect on the flue gas;

The inner side of the whole mobile cover 1 is laid with a fire-resistant heat insulation layer, which has a good heat insulation effect, can reduce the temperature in the factory building, significantly improve the working conditions of the workers, and prevent the deformation of the capture cover caused by radiant heat baking due to high internal temperature;

The flue gas collection cover is small in size, safe and convenient to install and operate, and the flue gas collection efficiency can reach 100%.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (6)

1. A mobile molten iron folding tank flue gas collection cover is characterized in that it includes a support frame, a fixed cover, a moving cover, an air duct, and a moving mechanism, wherein: The support frame is connected to the ground and is used to provide support for the collection cover as a whole; The air duct is placed above the support frame for transporting the smoke generated when the molten iron is folded; One end of the fixed cover communicates with the air duct, and is used to form a negative pressure sealed cavity together with the mobile cover to remove the smoke generated when the molten iron folding tank is pumped out. The lower part of the fixed cover is fixed on the support frame above the cross-post; The moving cover communicates with the other end of the fixed cover, the moving cover is placed above the supporting frame, and is used to capture the smoke generated when the molten iron is folded, and the moving cover can be opposite to the The fixed cover moves, and the movable cover is composed of a rear sealing plate, a front sealing plate, a top sealing plate and two side sealing plates, and the lower part of the front sealing plate is opened to ensure that the molten iron tank and plate hooks can enter The pouring of molten iron and the molten iron ladle in the moving cover can freely enter and exit the moving cover; The moving mechanism is connected with the moving cover and can drive the moving cover to move back and forth; The moving mechanism includes a girder, an electric reducer, a driving wheel and a driven wheel, the driving wheel is controlled to rotate by the electric reducer, the driving wheel drives the driven wheel to rotate, and the driving wheel and the driven wheel are connected on the girder and can drive the girder to move, one end of the girder is connected to the moving cover, the driving wheel and the driven wheel are installed on the girder and are located on the cross column of the support frame above; A dust removal air valve is arranged in the air pipe, and the dust removal air valve is arranged in one end of the air pipe connected to the fixed cover; The fitting gap between the outside of the fixed cover and the inside of the moving cover is 1 mm. 2. The mobile molten iron folding pot fume collection hood according to claim 1, characterized in that, the moving mechanism further comprises a walking positioner, and the walking positioner is connected to both the girder and the support frame . 3. The mobile molten iron folding tank fume collection hood according to claim 2, characterized in that there are two walking positioners. 4. The mobile molten iron folding tank fume collection hood according to claim 1, characterized in that, the moving mechanism also includes a movement limiter and a striker, and the striker is connected to the other end of the girder , the movement limiter is connected to the support frame. 5 . The mobile molten iron folding tank fume collection hood according to claim 4 , wherein the movement limit is composed of a movement extension limit and a movement retraction limit. 6 . 6. The mobile molten iron folding pot smoke collection hood according to claim 1, characterized in that a fire-resistant and heat-insulating layer is laid on the inside of the cover body of the mobile hood.