CN218511457U

CN218511457U - Large-span arched girder structure of atmosphere protection multi-pusher kiln

Info

Publication number: CN218511457U
Application number: CN202222570919.7U
Authority: CN
Inventors: 封建龙; 张涛; 崔宇岑; 石建军; 程力; 崔宇凯
Original assignee: Jiangyin Changyuan Machinery Manufacturing Co ltd
Current assignee: Jiangyin Changyuan Machinery Manufacturing Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-02-21
Anticipated expiration: 2032-09-28

Abstract

The utility model relates to an arched beam structure, including vault and heating chamber (3), the heating chamber shaping sets up stress release hole (7) between two adjacent rows of vaults on the vault, stress release hole (7) intercommunication inside and outside heating chamber (3). Any row of the arch tops are formed by splicing a plurality of arch top bricks, and each arch top brick is provided with the stress release hole (7). Any row the vault is by middle arch crown brick (1) and polylith edge arch crown brick (2) constitution, and wherein edge arch crown brick (2) symmetry sets up in middle arch crown brick (1) both sides and supports tightly each other, middle arch crown brick (1) sets up meshing step (5) with this on the concatenation face with adjacent edge arch crown brick (2) and props tightly from top to bottom, and adjacent edge arch crown brick (2) correspond on the concatenation face and set up tenon (4) and recess (5) structure with this realization buckle lock joint each other. The utility model provides a vault too big difficult problem of stress under high temperature high pressure environment.

Description

Large-span arched girder structure of atmosphere protection multi-pusher kiln

Technical Field

The utility model relates to a push pedal kiln heating field especially relates to the arched girder structure of push pedal kiln.

Background

The atmosphere protection pushed slab kiln is sintering equipment in the production process of magnetic materials, and with continuous innovation and structural improvement in recent ten years, the pushed slab kiln is developed towards a larger size with more than four pushed slabs so as to obtain larger pushed slab kiln loading capacity. Therefore, the arched girder with larger span also needs to be designed, in addition, the temperature of the kiln cavity of the atmosphere protection pushed slab kiln is higher, the integral stability of the arched girder can be reduced under high temperature and pressure, and the problem can be more prominent along with the development of the arched girder towards large span. In addition, part of the kiln cavity needs to be designed with an upper heating chamber and a lower heating chamber, the upper heating chamber is often formed in an arched beam, heating equipment is arranged in the heating chambers, and stress is generated inside and outside the arched beam due to the temperature difference in the heating process, and the existence of the stress is unfavorable.

Patent publication No. CN102052833A discloses a kiln body arched beam of a nitrogen atmosphere protection pushed slab kiln in a high-temperature region, which comprises a middle arched beam brick, an inner arched beam brick and an outer arched beam brick, wherein a semicircular groove is formed on one connecting surface of the middle arched beam brick, the other connecting surface is an inclined surface, two connecting surfaces of the inner arched beam brick are inclined surfaces, one connecting surface of the outer arched beam brick is an inclined surface, the inclined angle alpha of the inclined surfaces of the middle arched beam brick, the inner arched beam brick and the outer arched beam brick is 3-10 degrees, and the inclined surfaces of the middle arched beam brick, the inner arched beam brick and the outer arched beam brick are provided with meshing steps corresponding to each other; the middle arched girder brick, the inner arched girder brick and the outer arched girder brick are arranged in a bilateral symmetry way; the semicircular grooves of the two middle arched girder bricks form a jack, and a pin column is arranged in the jack. The invention has the advantages of difficult loosening, less maintenance and repair, convenience and capability of improving the production efficiency. But this technique does not address the problem of stress.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an arched girder structure of many pushed slab kilns large-span of atmosphere protection solves the difficult problem of arched girder heating stress release.

The technical scheme of the utility model is that: the arched beam structure comprises arched roofs and a heating chamber, wherein the heating chamber is formed between two adjacent rows of arched roofs, stress release holes are formed in the arched roofs, and the stress release holes are communicated with the inside and the outside of the heating chamber.

Optionally, any row of the arch crown is formed by splicing a plurality of arch crown bricks, and each arch crown brick is provided with the stress release hole.

Optionally, any row of the arch crown is composed of a middle arch crown brick and a plurality of side arch crown bricks, wherein the side arch crown bricks are symmetrically arranged on two sides of the middle arch crown brick and are mutually abutted.

Optionally, an inclined plane tensioning structure is adopted between the middle arch top brick and the adjacent side arch top bricks, and an inclined plane tensioning structure is adopted between the two adjacent side arch top bricks; optionally, the middle arch top brick, the adjacent side arch top bricks and the adjacent two side upper arch top bricks are provided with meshing steps on the splicing surface so as to realize up-and-down support; optionally, the middle arch top brick, the adjacent edge arch top bricks and the adjacent two edge upper arch top bricks are correspondingly provided with tenon and groove structures on the splicing surface so as to realize mutual buckling and locking.

Optionally, a dome cover is provided above the heating chamber and a shelf is provided below the heating chamber for supporting the heating elements, the dome cover, two adjacent rows of domes and the shelf enclosing the heating chamber. Through the arrangement of the arched roof cover plate and the shelf, the standardized production of the arched beam can be realized, and the assembly is convenient.

Optionally, both sides of the dome sheet are supported to correspond to the two rows of domes. The opposite surfaces of the two rows of arch tops of the heating chamber are respectively formed with an upper supporting step, two sides of the arch top cover plate are respectively supported on the upper supporting steps, and preferably, the arch top cover plate and the arch tops are orderly aligned at the upper edge.

Optionally, the shelves are supported on both sides in correspondence of the rows of domes. And lower supporting steps are respectively formed on the opposite surfaces of the two rows of arch tops of the heating chamber, and two sides of the shelf are respectively supported on the lower supporting steps.

Optionally, the two sides of the kiln cavity below the vault are respectively provided with a side wall brick, the side wall bricks are provided with air holes, the vault is simultaneously supported on the side wall bricks, positioning holes are respectively formed at two ends of the vault, and the positioning holes clamp the side wall bricks, so that the vault can be effectively prevented from sinking.

Optionally, two end faces of the arch crown are respectively formed with masonry steps, and the arch crown spans between walls at two ends through the masonry steps so as to support the arch crown as a whole.

Compared with the prior art, the utility model has the advantages of:

(1) For the vault with the heating chamber, the stress release holes are formed in the vault, so that the problem that the vault is overlarge in stress under a high-temperature and high-pressure environment can be solved, and in addition, the stress release holes formed in each vault brick are also favorable for the forming process and balance stress in time.

(2) The vault adopts the concatenation of polylith brick, and a middle vault brick and a plurality of edge vault bricks are favorable to shaping and installation.

(3) The middle arch-top brick is matched with the adjacent side arch-top bricks by utilizing the meshing steps to prevent sinking, the middle arch-top brick can be tightly supported from top to bottom during installation, the sizes of the two sides of the arch top are controlled firstly during site building, then the side arch-top bricks are sequentially placed, and finally the middle arch-top brick is placed.

(4) The joint of the edge arch-top bricks is locked by adopting the tenon and groove structure, and the whole stability is good under high temperature and pressure.

(5) The positioning bayonets are arranged at the joints of the two ends of the arch crown and the side wall bricks, so that the arch crown is reliably supported, the arch crown is effectively prevented from sinking when the upper part of the arch crown is stressed, and the phenomenon of opening at the joint is avoided.

Drawings

Fig. 1 is a schematic structural view of two rows of vaults opposite to each other in an embodiment of the present invention;

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

FIG. 3 is a top view of the structure shown in FIG. 1;

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

fig. 5 is a schematic structural view of two rows of opposing domes in an embodiment of the invention;

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

FIG. 7 is a top view of the structure shown in FIG. 5;

FIG. 8 is a side view of the structure shown in FIG. 5;

FIG. 9 is a schematic view of the fitting of the crown and the side wall bricks in the embodiment of the present invention;

FIG. 10 is a front view of the structure shown in FIG. 9;

FIG. 11 is a side view of the structure shown in FIG. 9;

FIG. 12 is a schematic view of the assembly of the intermediate crown blocks;

in the figure, 1 middle arch top brick, 2 side arch top bricks, 3 heating chambers, 4 tenons, 5 grooves, 6 meshing steps, 7 stress release holes, 8 arch top cover plates, 9 shelves, 10 side wall bricks, 11 air holes, 12 positioning holes, 13 masonry steps and 14 walls.

Detailed Description

The present invention will be described in further detail with reference to the following drawings, which are illustrative and are not to be construed as limiting the present invention. The description of the present embodiment is corresponding to the accompanying drawings, and the description related to the orientation is also based on the description of the accompanying drawings, and should not be construed as limiting the scope of the present invention.

The embodiment relates to an atmosphere protection multi-pusher kiln large-span arched beam structure, which comprises arch tops and a heating chamber 3, wherein a row of arch tops in a kiln cavity is arranged across the upper part of the kiln cavity, the heating chamber 3 is formed between two adjacent rows of arch tops which are oppositely arranged,

heating chambers 3 can be formed between two rows of front and rear opposite arches, and the rear row of arches of the front heating chamber in the adjacent heating chambers 3 is arranged opposite to the front row of arches of the rear heating chamber, as shown in fig. 1-4. Every row of vault is formed by the concatenation of polylith arch-top brick respectively, all sets up stress release hole 7 on every arch-top brick, and stress release hole 7 communicates heating chamber 3 inside and outside, and the stress release hole on two rows of vaults that back on the back corresponds the intercommunication to can let adjacent heating chamber 3 also can communicate.

Specifically, each row of vault is composed of a middle vault brick 1 and four upper vault bricks 2, wherein the four upper vault bricks 2 are respectively arranged on two sides of the middle vault brick 1 in a pairwise symmetry manner and are abutted against each other, the middle vault brick 1 and the adjacent upper vault bricks 2 are provided with meshing steps 6 on the splicing surfaces so as to realize up-down bracing, and specifically, the middle vault brick 1 is supported on the upper vault bricks 2; the tenon 4 and the groove 5 structures are correspondingly arranged on the splicing surfaces of the adjacent two upper arch-top bricks 2, so that the mutual buckling and locking connection is realized, and the splicing surfaces among different arch-top bricks adopt inclined surfaces. When in site masonry, the sizes of the two sides of the arch crown are controlled, then the arch crown bricks on the edges are placed, and finally the middle arch crown brick is placed, as shown in figure 12.

Further, a dome cover 8 is provided above the heating chamber 3, a shelf 9 is provided below the heating chamber, the shelf 9 is used for supporting heating elements (such as silicon molybdenum rods), and the dome cover 8, the front row and the rear row of domes and the shelf 9 enclose the heating chamber 3. As shown in fig. 5 to 8, upper supporting steps are formed on the opposite surfaces of the two rows of domes, respectively, and the front and rear edges of the dome cover plate 8 are supported on the upper supporting steps, respectively. Lower supporting steps are respectively formed on the opposite surfaces of the two rows of arches, and the front edge and the rear edge of the shelf 9 are respectively supported on the lower supporting steps.

The two sides of the kiln cavity below the vault are respectively provided with a side wall brick 10, the side wall brick 10 is provided with an air vent 11, two ends of the vault are supported on the side wall bricks 10 at two sides, two ends of the vault are respectively provided with a positioning hole 12, and the positioning holes 12 clamp the side wall bricks 10. In addition, two end surfaces of the arch crown are respectively provided with masonry steps 13, and the arch crown stretches across between two end walls 14 through the masonry steps 13.

In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. An arched beam structure comprising arches and a heating chamber (3) formed between two adjacent rows of arches, characterized in that: and a stress release hole (7) is formed in the arch top, and the stress release hole (7) is communicated with the inside and the outside of the heating chamber (3).

2. The arched beam structure of claim 1, wherein: any row of vault is formed by splicing a plurality of arch-top bricks, and each arch-top brick is provided with the stress release hole (7).

3. The arched beam structure of claim 1 or 2, wherein: and any row of the arch tops is composed of a middle arch top brick (1) and a plurality of edge arch top bricks (2), wherein the edge arch top bricks (2) are symmetrically arranged at two sides of the middle arch top brick (1) and are mutually abutted.

4. The arched beam structure of claim 3, wherein: an inclined plane supporting structure is adopted between the middle arch top brick (1) and the adjacent side arch top bricks (2), and an inclined plane supporting structure is adopted between the two adjacent side arch top bricks (2); or the middle arch top brick (1), the adjacent side arch top bricks (2) and the adjacent two side upper arch top bricks (2) are provided with meshing steps (6) on the splicing surface to realize the up-and-down support; or the middle arch top brick (1), the adjacent edge arch top bricks (2) and the adjacent two edge upper arch top bricks (2) are correspondingly provided with tenon (4) and groove (5) structures on the splicing surface so as to realize mutual buckling and locking.

5. The arched beam structure of claim 1, wherein: an arch top cover plate (8) is arranged above the heating chamber (3), a shelf (9) is arranged below the heating chamber (3), the shelf (9) is used for supporting a heating element, and the heating chamber is surrounded by the arch top cover plate (8), two adjacent rows of arches and the shelf (9).

6. The arched beam structure of claim 5, wherein: and two sides of the arch top cover plate (8) are correspondingly supported on two rows of arch tops.

7. The arched beam structure of claim 6, wherein: upper supporting steps are respectively formed on the opposite surfaces of the two rows of arches of the heating chamber (3), and two sides of the arch top cover plate (8) are respectively supported on the upper supporting steps.

8. An arched beam structure according to claim 5, wherein: two sides of the shelf (9) are correspondingly supported on the two rows of domes.

9. An arched beam structure according to claim 8, wherein: and lower supporting steps are respectively formed on the opposite surfaces of the two rows of arch tops of the heating chamber (3), and two sides of the shelf (9) are respectively supported on the lower supporting steps.

10. The arched beam structure of claim 1, wherein: the kiln comprises a vault and is characterized in that side wall bricks (10) are arranged on two sides of a kiln cavity below the vault respectively, air holes (11) are formed in the side wall bricks (10), the vault is supported on the side wall bricks (10) simultaneously, positioning holes (12) are formed in two ends of the vault respectively, and the side wall bricks (10) are clamped by the positioning holes (12).

11. The arched beam structure of claim 1, wherein: two end faces of the vault are respectively formed into masonry steps (13), and the vault spans between wall bodies (14) at two ends through the masonry steps (13).

12. The arched beam structure of claim 1, wherein: two rows of vaults between two adjacent heating chambers are arranged in an opposite mode, and the stress release holes in the two vaults in the opposite mode are communicated in an aligned mode.