CN213395901U

CN213395901U - Hot-blast furnace and prevent falling brick flame path thereof

Info

Publication number: CN213395901U
Application number: CN202022064945.3U
Authority: CN
Inventors: 陈婧; 鄢雪丽; 谷小颖
Original assignee: Zhengzhou Dongding Drying Equipment Co ltd
Current assignee: Zhengzhou Dongding Drying Equipment Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-06-08
Anticipated expiration: 2030-09-18

Abstract

The utility model relates to a hot-blast furnace and prevent falling brick flame path thereof. The hot blast stove comprises a combustion chamber, a flame path with a horizontal axis is connected to the combustion chamber, one end of the flame path is embedded on the side wall of the combustion chamber, and the other end of the flame path is supported on the ground through a lower bracket; the flame path comprises an outermost structural steel pipe, a refractory brick layer is built on the inner cavity wall of the lower half part of the structural steel pipe through refractory cement, a plurality of anchoring hook claws are welded on the inner cavity wall of the upper half part of the structural steel pipe at intervals, the central line of each anchoring hook claw vertically penetrates through the central line of the flame path, the refractory cement is filled between the inner cavity wall of the upper half part of the structural steel pipe and each anchoring hook claw, and the refractory brick layer and the refractory cement layer of the anchoring hook claw jointly form a refractory layer with a smooth inner surface. Has the advantages of no brick falling, stable structure, long service life, simple structure and convenient and fast processing.

Description

Hot-blast furnace and prevent falling brick flame path thereof

Technical Field

The utility model relates to a hot-blast furnace and prevent falling brick flame path thereof.

Background

The hot blast stove is a thermal power machine, generally a coal-fired machine is burnt, the principle is that coal is fed into a hearth through a grate, a fan supplies air, the air passes through a coal bed, the air is in contact with the coal on a chain and is fully combusted to generate high-temperature smoke, high-temperature flame enters a secondary combustion chamber and a cyclone burnout chamber to be combusted again, the high-temperature smoke and a small amount of flame can flow to a next device through a flame path, so that the flame path needs to bear high temperature, when the combustion chamber stops combusting, the temperature of the flame path is reduced, the conventional flame path is built by refractory bricks, the refractory bricks at the top of the flame path are difficult to squeeze tightly in the building process, refractory clay is difficult to fill brick joints, the top refractory bricks are loosened and fall off due.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hot blast stove which has simple structure, stable overall structure of the flame path and no cracking and falling of the upper structure; the utility model also aims to provide an anti-falling brick flame path used by the hot blast stove.

In order to achieve the above purpose, the hot blast stove of the utility model adopts the following technical scheme: the hot blast stove comprises a combustion chamber, a flame path with a horizontal axis is connected to the combustion chamber, one end of the flame path is embedded on the side wall of the combustion chamber, and the other end of the flame path is supported on the ground through a lower bracket; the flame path comprises an outermost structural steel pipe, a refractory brick layer is built on the inner cavity wall of the lower half part of the structural steel pipe through refractory cement, a plurality of anchoring hook claws are welded on the inner cavity wall of the upper half part of the structural steel pipe at intervals, the central line of each anchoring hook claw vertically penetrates through the central line of the flame path, the refractory cement is filled between the inner cavity wall of the upper half part of the structural steel pipe and each anchoring hook claw, and the refractory brick layer and the refractory cement layer of the anchoring hook claw jointly form a refractory layer with a smooth inner surface.

Further, the anchoring claw comprises a straight rod section and a bent section which extends outwards and radially from one end of the straight rod section.

Further, the bending section is arc-shaped.

Further, the bending section is at least three.

Furthermore, the support is H-shaped, and an arc-shaped cushion block matched with the external support of the structural steel pipe is fixed at the upper part of the support.

Further, the support is H-shaped, and the upper end of the support is welded and fixed outside the structural steel pipe.

In order to achieve the above purpose, the utility model discloses a prevent falling brick flame path adopts following technical scheme: the anti-falling brick flame path comprises an outermost structural steel pipe, a refractory brick layer is built on the inner cavity wall of the lower half part of the structural steel pipe through refractory cement, a plurality of anchoring hook claws are welded on the inner cavity wall of the upper half part of the structural steel pipe at intervals, the central line of each anchoring hook claw vertically penetrates through the central line of the flame path, the refractory cement is filled between the inner cavity wall of the upper half part of the structural steel pipe and each anchoring hook claw, and the refractory brick layer and the refractory cement layer of the anchoring hook claw jointly form a refractory layer with a smooth inner surface.

Further, the bending section is arc-shaped.

Further, the bending section is at least three.

The utility model has the advantages that: compared with the existing structure with the upper part and the lower part both used for building refractory bricks, firstly, the upper part forms a framework of refractory cement by virtue of a plurality of welded anchoring hook claws, the integrity of the refractory cement is better, the structure is more stable, the anchoring hook claws can also play a role of fixing the refractory cement in a 'hook' manner, even if the phenomena of cracking or local separation between a structural steel pipe and the refractory cement are caused by expansion with heat and contraction with cold, the anchoring hook claws are fixed by the staggered arrangement to form a network shape, the further cracking and falling can be avoided, the structure is firm and reliable, and the service life is prolonged; secondly, for the processing method of present on-the-spot masonry firebrick, this structure is direct through the mould that forms between arc and the structural steel pipe, pours refractory cement to the intracavity that encloses, and the mould that the arc formed is removed after refractory cement solidifies can be accomplished, and the processing method is succinct more, swift, also makes the later maintenance cost reduce when simple in preparation technology, easily promotes and carries out.

Drawings

FIG. 1 is a partial cross-sectional view of the hot blast stove of the present invention;

fig. 2 is a left side view of fig. 1 (upper structure omitted);

FIG. 3 is a longitudinal cross-sectional view of the flame path of FIG. 1;

FIG. 4 is a cross-sectional view of the flame path of FIG. 1;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

FIG. 6 is a perspective view of the anchoring claw;

in the figure: 1-combustion chamber, 2-flame path, 21-structural steel pipe, 22-flame retardant coating, 221-refractory brick layer, 222-anchoring claw, 2221-straight rod section, 2222-bending section, 223-refractory cement, 3-bracket and 31-arc cushion block.

Detailed Description

The utility model discloses a hot-blast furnace concrete embodiment, as shown in fig. 1-6, the hot-blast furnace includes the combustion chamber, is connected with the flame path that the axis level set up on the combustion chamber, and wherein, the combustion chamber isotructure of hot-blast furnace is prior art, has multiple structural style, no longer the detailed description. One end of the flame path is embedded on the side wall of the combustion chamber, and the other end of the flame path is supported on the ground through a support at the lower part; the flame path comprises an outermost structural steel pipe, a refractory brick layer is built on the inner cavity wall of the lower half part of the structural steel pipe through refractory cement, a plurality of anchoring hook claws are welded on the inner cavity wall of the upper half part of the structural steel pipe at intervals, the central line of each anchoring hook claw vertically penetrates through the central line of the flame path, the refractory cement is filled between the inner cavity wall of the upper half part of the structural steel pipe and each anchoring hook claw, and the refractory brick layer and the refractory cement layer of the anchoring hook claw jointly form a refractory layer with a smooth inner surface. The anchoring claw comprises a straight rod section and a bending section which extends outwards and radially from one end of the straight rod section. The bending section is arc-shaped. There are at least three bending sections, 4 in this embodiment. The support is H-shaped, and the upper part of the support is fixed with an arc cushion block which is used for being matched with the external support of the structural steel pipe. In other embodiments, the bracket is H-shaped, and the upper end of the bracket is welded and fixed on the outer part of the structural steel pipe.

The utility model discloses a flame path upper portion of hot-blast furnace relies on a plurality of anchor of welded to collude the claw and constitutes the skeleton of refractory cement, the refractory cement wholeness is better, and the structure is more firm, and the anchor colludes the claw and can also play the fixed power of "hook" to refractory cement, even the expend with heat and contract with cold and lead to having the phenomenon of fracture or local breaking away from between structural steel pipe and the refractory cement, also can be fixed by each staggered arrangement and form the anchor of network form and collude the claw and fix and can not further fracture and fall, and the sound construction is reliable, has prolonged life; secondly, for the processing method of present on-the-spot masonry firebrick, this structure is direct through the mould that forms between arc and the structural steel pipe, pours refractory cement to the intracavity that encloses, and the mould that the arc formed is removed after refractory cement solidifies can be accomplished, and the processing method is succinct more, swift, also makes the later maintenance cost reduce when simple in preparation technology, easily promotes and carries out.

The utility model discloses a prevent falling the specific embodiment of brick flame path and the flame path in the various embodiments of above-mentioned hot-blast furnace's structure is the same, no longer gives unnecessary details.

Claims

1. The hot blast stove comprises a combustion chamber, wherein a flame path with a horizontal axis is connected to the combustion chamber, and the hot blast stove is characterized in that one end of the flame path is embedded on the side wall of the combustion chamber, and the other end of the flame path is supported on the ground through a support at the lower part; the flame path comprises an outermost structural steel pipe, a refractory brick layer is built on the inner cavity wall of the lower half part of the structural steel pipe through refractory cement, a plurality of anchoring hook claws are welded on the inner cavity wall of the upper half part of the structural steel pipe at intervals, the central line of each anchoring hook claw vertically penetrates through the central line of the flame path, the refractory cement is filled between the inner cavity wall of the upper half part of the structural steel pipe and each anchoring hook claw, and the refractory brick layer and the refractory cement layer of the anchoring hook claw jointly form a refractory layer with a smooth inner surface.

2. The stove according to claim 1, wherein the anchoring claw comprises a straight shank segment and a bent segment radiating outwardly from an end of the straight shank segment.

3. The stove according to claim 2, wherein the bending section is arcuate.

4. The stove according to claim 2 or 3, wherein there are at least three bending sections.

5. The stove according to claim 1, wherein the frame is H-shaped and an arcuate spacer is secured to an upper portion of the frame for engagement with an external support of the structural steel duct.

6. The stove according to claim 1, wherein the support is H-shaped, and the upper end of the support is welded and fixed to the outside of the structural steel tube.

7. Prevent falling brick flame path, a serial communication port, including outermost structural steel pipe, the inner chamber wall of the lower half of structural steel pipe has built refractory brick layer through refractory cement, the interval welding has a plurality of anchor to collude the claw on the inner chamber wall of the first half of structural steel pipe, the central line that each anchor colluded the claw passes the central line of flame path perpendicularly, it has refractory cement to fill between the inner chamber wall of the first half of structural steel pipe and each anchor colludes the claw, the refractory brick layer constitutes the glossy flame retardant coating of internal surface with the refractory cement layer of anchor colluding the claw jointly.

8. The drop-resistant block fire path of claim 7, wherein the anchoring claw comprises a straight rod section and a bent section radiating outwardly from one end of the straight rod section.

9. The fall-off prevention brick flame path of claim 8 wherein the bend section is arcuate.

10. A falling off prevention block fire course as claimed in claim 8 or 9, wherein there are at least three bending sections.