CN210833048U - Sintering air box for sintering thick material layer - Google Patents

Abstract

The utility model discloses a sintering bellows of a sintering thick material layer, which comprises a box body (1) and a valve plate (2), wherein the valve plate (2) is arranged on the box body (1) through a valve plate shaft (3); the valve plates (2) are distributed on two sides of the valve plate shaft (3), and the valve plates (2) on the two sides are curved surfaces with opposite protruding directions; on the section vertical to the valve plate shaft (3), the valve plate (2) is a curve symmetrically distributed with the axis of the valve plate shaft (3). By adopting the technical scheme, the problem of material blockage inside the sintering air box valve body is effectively solved, and the problems of valve plate abrasion caused by material scouring and valve plate deformation caused by thermal stress existing in a flat valve plate are solved at the same time, the technical scheme can be applied to sintering all air box butterfly valves, especially ignition negative pressure control at the lower part of an ignition furnace, can realize reasonable and automatic control of air box action and furnace pressure, is not blocked and has long service cycle; the gas consumption can be reduced under the condition of controlling the ignition negative pressure, and the strength of the surface layer sinter is enhanced.

Description

Sintering air box for sintering thick material layer

Technical Field

The utility model belongs to the technical field of sintering process equipment, specifically, the utility model relates to a sintering thick material layer sintering bellows especially relates to the technique of high temperature, the higher bellows structure of dust content, or other easy jam, turn over comparatively serious bellows design technique of board deformation.

Background

The sintering bellows now adopts the design of unipolar veneer, multiaxis multiplate flap valve formula butterfly valve more, and its simple structure, nevertheless use on sintering waste gas bellows and easily produce the jam, on-line treatment after the jam is difficult, because of the high temperature causes the board of turning over to warp more, high temperature dust and high wind speed to the valve plate impact cause the valve plate serious wear great, short service life to the valve plate, especially cause sintering ignition negative pressure out of control during the sintering section of ignition use.

In the prior art, as shown in fig. 1 to 4, a flap structure in a single-shaft single-plate or multi-shaft multi-plate flap butterfly valve is designed by a horizontal valve plate, a rotating shaft of the flap butterfly valve is arranged in the middle of the flap, and the ventilation area of the valve is changed by adjusting the rotation angle of the flap. The sintering waste gas contains a small amount of water vapor, is also mixed with a large amount of bulk materials and dust, and simultaneously has furnace grate bars falling off from the trolley. When the butterfly valve is closed to a certain small angle, firstly the grate bar is blocked between the turning plate and the valve body, then bulk materials or dust are gradually deposited near the turning plate, and the turning plate can not rotate due to the fact that the valve body is fully piled up by the accumulated materials. The serious person blocks the whole air box fully, and the consolidation occurs for a long time, so that the ignition of the mixture is influenced. Another hazard after the bellows is fully blocked is that the effective air draft area of sintering is reduced, which results in the reduction of the yield and quality of sintered ore.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sintering thick material layer sintering bellows, its purpose is solved the inside putty problem of sintering bellows valve body.

In order to realize the purpose, the utility model discloses the technical scheme who takes does:

the utility model discloses a sintering bellows of a sintering thick material layer, which comprises a box body and a valve plate, wherein the valve plate is arranged on the box body through a valve plate shaft; the valve plates are distributed on two sides of the valve plate shaft, and the valve plates on the two sides are curved surfaces with opposite protruding directions; on the section perpendicular to the valve plate shaft, the valve plate is a curve symmetrically distributed along the valve plate shaft axis.

The curve is a circular arc line.

The central angle of the circular arc line is 25 degrees.

When the valve plate rotates to the closed position, the edge of the valve plate is attached to the inner wall of the box body; at this time, the edge of the valve plate with the upward curved convex surface is higher than the edge of the valve plate with the downward curved convex surface.

The utility model adopts the above technical scheme, effectively solve the inside putty problem of sintering bellows valve body, solved the valve plate wearing and tearing that the material that exists in the flat plate valve plate erodees the valve plate that causes simultaneously, the valve plate deformation problem that thermal stress caused, this technical scheme can be applied and all bellows butterfly valves of sintering, especially ignition negative pressure control in ignition furnace lower part, can realize reasonable automatic control bellows action and furnace pressure, unblock, life cycle is long; the gas consumption can be reduced under the condition of controlling the ignition negative pressure, and the strength of the surface layer sinter is enhanced.

Drawings

The contents of the drawings and the references therein are briefly described as follows:

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a side schematic view of the structure shown in FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a top view of the structure shown in FIG. 1;

fig. 5 is a schematic structural view of the present invention;

FIG. 6 is a side schematic view of the structure shown in FIG. 5;

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 5;

fig. 8 is a top view of the structure shown in fig. 5.

Labeled as:

1. the valve comprises a box body, 2, a valve plate, 3, a valve plate shaft, 4 and a valve plate shaft sleeve.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a more complete, accurate and thorough understanding of the inventive concept and technical solutions of the present invention by those skilled in the art.

The structure of the present invention as shown in fig. 5 to 8 is a sintering bellows for sintering thick material layer, which comprises a box body 1 and a valve plate 2, wherein the valve plate 2 is installed on the box body 1 through a valve plate shaft 3. The valve plate shaft sleeve 4 is arranged on the box body 1, and two ends of the valve plate shaft 3 are supported by the valve plate shaft sleeve 4 and are arranged on the box body 1.

In order to solve the problems existing in the prior art and overcome the defects thereof, the invention aims at solving the problem of material blockage inside the valve body of the sintering air box, and the technical scheme adopted by the utility model is as follows:

as shown in fig. 5 to 8, in the sintering bellows for sintering thick material layers according to the present invention, the valve plates 2 are distributed on both sides of the valve plate shaft 3, and the valve plates 2 on both sides are curved surfaces with opposite protruding directions; on the section perpendicular to the valve plate shaft 3, the valve plate 2 is a curve symmetrically distributed with the axis of the valve plate shaft 3.

The integral design of the bellows butterfly valve is unchanged. The utility model discloses under the unchangeable condition of sintering bellows butterfly valve unit design, only carry out the curved surface suppression to the valve plate and can implement. The valve plate 2 is a flat plate before being transformed and is a curved plate after being transformed. The utility model discloses a novel design of bellows butterfly valve plate uses novel valve plate can effectively solve bellows and when the butterfly valve closed certain little angle, and grate bar following current to valve plate curved surface department avoids its jamming to turning over between board and the valve body, and bulk cargo or dust are deposited gradually on turning over the board curved surface, and long-pending material is piled up and is unloaded by oneself when turning over the board rotation to certain angle after the valve plate body, does not influence the free rotation of valve plate.

The technical scheme effectively solves the problem of material blockage inside the sintering air box valve body, solves the problems of valve plate abrasion and valve plate deformation caused by thermal stress due to material scouring in the flat plate valve plate, can be applied to sintering all air box butterfly valves, particularly ignition negative pressure control on the lower part of an ignition furnace, can realize reasonable and automatic control of air box action and hearth pressure, and has no blockage and long service life. The gas consumption can be reduced under the condition of controlling the ignition negative pressure, and the strength of the surface layer sinter is enhanced.

The curve is a circular arc line.

The central angle of the circular arc line is 25 degrees. The curved plate is of a hyperbolic curve type, and the curve is designed to be 25 degrees;

the design of the curved flap can be seen clearly in fig. 7, the novel valve plate is designed in a double-curved-surface mode, and the curved plate is in seamless contact with the flap of the bellows butterfly valve. When the grate bar flows to the curved surface of the valve plate to eliminate the blockage between the turning plate and the valve body, bulk materials or dust are gradually deposited on the curved surface of the turning plate, and the accumulated materials are automatically discharged when the turning plate rotates to a certain angle after being fully stacked on the valve plate body, so that the free rotation of the valve plate is not influenced.

As shown in fig. 7, when the valve plate 2 rotates to the closed position, the edge of the valve plate 2 is attached to the inner wall of the box 1; at this time, the edge of the valve plate 2 with the upward curved surface convex surface is higher than the edge of the valve plate 2 with the downward curved surface convex surface.

The valve plate with the curved surface has the following characteristics:

the design structure is unique: the curved surface valve plate still adopts the existing valve body design, does not carry on the large-scale transformation to the valve body, compare with traditional valve plate design, under the same condition of effective draught area, the valve plate is effective "the opening of crossing the material" is 1.5 times of the flat plate design;

during the closing period of the valve plate, all scattered blanking materials, grate bars and the like can be effectively collected in the valve body, so that dust in the valve body is not abraded, and the valve plate is protected;

during the movement of the valve plate, the upper part of the valve plate is free from material blockage and can be freely opened, so that the problem of valve body blockage is well solved;

when a multi-shaft multi-plate design is adopted, multiple seals can be formed; the valve plate with the curved surface has larger self stress action under the condition of high temperature, and can effectively solve the problem of valve plate deformation.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.

Claims (4)

1. The utility model provides a thick material layer sintering bellows of sintering, includes box (1), valve plate (2) install on box (1) through valve plate axle (3), its characterized in that: the valve plates (2) are distributed on two sides of the valve plate shaft (3), and the valve plates (2) on the two sides are curved surfaces with opposite protruding directions; on the section perpendicular to the valve plate shaft (3), the valve plate (2) is a curve symmetrically distributed by the axis of the valve plate shaft (3).

2. The sinter bed sintering windbox of claim 1, wherein: when the valve plate (2) rotates to a closed position, the edge of the valve plate (2) is attached to the inner wall of the box body (1); at the moment, the edge of the valve plate (2) with the upward curved convex surface is higher than the edge of the valve plate (2) with the downward curved convex surface.

3. The sintered thick bed sintering windbox of claim 1 or 2 wherein: the curve is a circular arc line.

4. The sinter bed sintering windbox of claim 3, wherein: the central angle of the circular arc line is 25 degrees.

Images