CN218372106U

CN218372106U - Arch masonry structure for connecting channel of double-chamber lime shaft kiln

Info

Publication number: CN218372106U
Application number: CN202222523345.8U
Authority: CN
Inventors: 张想堂; 王昕�; 魏欣
Original assignee: Wiscodri Wugang Engineering Co ltd
Current assignee: Wiscodri Wugang Engineering Co ltd
Priority date: 2022-09-22
Filing date: 2022-09-22
Publication date: 2023-01-24
Anticipated expiration: 2032-09-22

Abstract

The utility model discloses an arch masonry structure for two thorax lime shaft kiln connect passage, including the second floor that is located inboard first layer and encircles and is located the outside, wherein, the first floor encircles and all adopts the wedge brick to build by laying bricks or stones to form on the second floor encircles the thickness direction, uses fire-resistant mud to build by laying bricks or stones between the wedge brick and connects. The utility model provides an arch masonry structure for two thorax lime shaft kiln interface channel because adopt double-deck arch structure to strengthen the intensity of whole arch brickwork, and then improved the structural life. Because the single-layer vault thickness size that each layer arch brickwork adopted is big, the structural strength of each single-layer vault is high. In addition, each wedge-shaped brick adopts a large size, the building requirement is small, the bricks are mutually engaged and staggered by adopting a staggered building method, and each layer of arch has strong integrity and uniform stress. This an arch masonry structure for two thorax lime shaft kiln connecting channel can avoid whole arch masonry structure's damage.

Description

Arch masonry structure for connecting channel of double-chamber lime shaft kiln

Technical Field

The utility model relates to an industrial furnace brickwork structure technical field especially relates to an arch brickwork structure for two thorax lime shaft kiln interface channel.

Background

The double-hearth lime shaft kiln is used for calcining limestone at high temperature to produce industrial quick lime, and is vigorously popularized and widely applied due to the advantages of environmental protection, energy conservation, small occupied area, high automation degree, high lime quality and the like.

The double-hearth lime shaft kiln consists of two symmetrical vertical hearths, the two hearths alternately calcine and preheat limestone, a connecting channel is arranged between the bottoms of the calcining belts of the two hearths and communicated with each other, and the direction is changed once every 12 minutes to change the working state of the hearths. The permeability and the integrity of the connecting channel are important factors influencing production, in the production process, the working temperature of the connecting channel is up to 1000 ℃, in addition, the working temperature is periodically flushed by airflow, and the working pressure in the channel is up to 30kPa, so that the connecting channel is the place which is the worst working environment of the lime shaft kiln and is most prone to structural damage. The connecting channel can develop damage to the whole kiln chamber structure once a defect occurs, thereby threatening the normal production of the lime kiln.

The connecting channel is generally an arch masonry structure built by refractory materials, and how to avoid the damage of the arch masonry structure and prolong the service life is of great importance; however, no effective solution has been proposed so far.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a life-span that is used for two thorax lime shaft kiln interface channel's arch masonry structure aims at improving interface channel department masonry structure.

In order to realize the above-mentioned purpose, the utility model provides an arch masonry structure for two thorax lime shaft kiln connect passageway, including being located inboard first layer and encircleing and being located the second floor in the outside, wherein, first layer encircles and all adopts the wedge brick to build by laying bricks or stones the constitution on the thickness direction with the second floor arch, uses fire-resistant mud to build by laying bricks or stones between the wedge brick that first layer arch and second floor arch to connect, and first layer arch and second floor are encircleed between and are built by laying bricks or stones the connection through fire-resistant mud.

Preferably, the thickness of the first layer arch is greater than the thickness of the second layer arch.

Preferably, the thickness of the first layer arch is 345 mm-380 mm, and the thickness of the second layer arch is 230 mm-300 mm.

Preferably, the wedge-shaped bricks forming the first layer of arch form an inner side surface with the same corresponding round angle as the wedge-shaped bricks forming the second layer of arch.

Preferably, the arc shape of the first layer of arch corresponds to a central angle of 60-80 °.

Preferably, the first layer of arch and the second layer of arch are constructed in a staggered manner, and adjacent wedge-shaped bricks are meshed with each other.

Preferably, the thickness of the gap between the wedge-shaped bricks forming the first layer of arch and the second layer of arch is less than or equal to 2mm.

Preferably, the width of the wedge-shaped bricks forming the first layer of arch and the second layer of arch is 220 mm-300 mm.

Preferably, the refractoriness under load of the wedge-shaped brick is more than or equal to 1550 ℃.

Preferably, the first layer of arch and the second layer of arch are both formed by building a layer of wedge-shaped bricks in the thickness direction.

The utility model provides an arch masonry structure for two thorax lime shaft kiln interface channel because adopt double-deck arch structure to strengthen the intensity of whole arch brickwork, and then improved the structural life. Because the single-layer vault thickness size that each layer arch brickwork adopted is big, the structural strength of each single-layer vault is high. In addition, each wedge-shaped brick adopts a large size, the building requirement is small, the bricks are mutually engaged and staggered by adopting a staggered building method, and each layer of arch has strong integrity and uniform stress. This an arch masonry structure for two thorax lime shaft kiln connecting channel can avoid whole arch masonry structure's damage, has prolonged life.

Drawings

FIG. 1 is a schematic structural view of an arch masonry structure of a connecting channel for a double-chamber lime shaft kiln of the present invention;

FIG. 2 isbase:Sub>A schematic sectional view along the line A-A in FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along the line B-B in FIG. 2;

fig. 4 is a schematic sectional view in the direction C-C shown in fig. 2.

In the figure, 1-a first layer of arch, 2-a second layer of arch, an arch center angle of an alpha-arch masonry structure, b 1-a vault thickness of the first layer of arch, b 2-a vault thickness of the second layer of arch, c 1-a wedge-shaped brick width of the first layer of arch, and c 2-a wedge-shaped brick width of the second layer of arch.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 4, in the preferred embodiment, the arch-shaped masonry structure for the connecting channel of the double-hearth lime shaft kiln comprises a first layer of arch 1 positioned on the inner side and a second layer of arch 2 positioned on the outer side, wherein the first layer of arch 1 and the second layer of arch 2 are both formed by wedge-shaped bricks in a masonry mode in the thickness direction, the wedge-shaped bricks of the first layer of arch 1 and the second layer of arch 2 are connected by refractory mortar masonry, and the first layer of arch 1 and the second layer of arch 2 are connected by refractory mortar masonry.

The first layer of arch 1 and the second layer of arch 2 are connected with two side walls of the connecting channel, and the bottom parts of the two side walls are provided with bottom walls, so that a complete closed channel is formed.

Further, referring to fig. 1, the first layer arch 1 has a thickness greater than that of the second layer arch 2. The first layer arch 1 has a thickness (i.e., dimension b1 of fig. 1) of 345 to 380mm, and the second layer arch 2 has a thickness (i.e., dimension b2 of fig. 1) of 230 to 300mm.

In this embodiment, the wedge-shaped bricks forming the first arch level 1 form an inner side with a corresponding rounded angle (i.e., dimension α in fig. 1) equal to the inner side of the wedge-shaped bricks forming the second arch level 2.

Specifically, the central angle corresponding to the arc shape of the first layer arch 1 is 60 to 80 degrees. In the direction parallel to the airflow channel, the first layer of arch 1 and the second layer of arch 2 are formed by connecting a plurality of wedge-shaped bricks.

Further, the thickness of a gap between wedge-shaped bricks forming the first layer of arch 1 and the second layer of arch 2 is smaller than or equal to 2mm (namely the thickness of a mortar joint is smaller than or equal to 2 mm), so that the probability of building defects caused by construction is reduced.

Specifically, referring to fig. 2 to 4, the width of the wedge-shaped bricks constituting the first and

second layer arches

1 and 2 is 220mm to 300mm (i.e., the dimensions c1 and c2 in fig. 2).

Specifically, in this embodiment, the refractoriness under load of the wedge-shaped brick starts at a temperature not lower than 1550 ℃. The wedge-shaped brick has high compressive strength, and the normal temperature compressive strength is more than or equal to 70N/mm < 2 >.

Furthermore, the first layer of arch 1 and the second layer of arch 2 are both formed by building a layer of wedge-shaped bricks in the thickness direction, namely the first layer of arch 1 and the second layer of arch 2 are respectively formed by building a plurality of thick wedge-shaped bricks, and each vertical thick wedge-shaped brick has the characteristics of high compressive strength and high service temperature. Because the thickness of the single-layer arch crown adopted by each layer of arched masonry is large, the structural strength of each single-layer arch is high.

The first layer of arch 1 and the second layer of arch 2 are built by a staggered building method, adjacent wedge-shaped bricks are mutually occluded, refractory mortar joints are staggered in a bow shape, and a full-length annular building joint is prevented from being formed in the direction perpendicular to an airflow channel. Meanwhile, the first layer of arch 1 and the second layer of arch 2 are staggered in layers when refractory mortar joints in the arch crown thickness direction are built.

The arch masonry structure for the double-chamber lime shaft kiln connecting channel provided by the embodiment adopts a double-layer arch structure, so that the strength of the whole arch masonry is enhanced, and the service life of the structure is prolonged. Because the single-layer vault thickness size that each layer arch brickwork adopted is big, the structural strength of each single-layer vault is high. In addition, each wedge-shaped brick adopts a large size, the building requirement is small, the bricks are mutually engaged and staggered by adopting a staggered building method, and each layer of arch has strong integrity and uniform stress. The arch masonry structure for the connecting channel of the double-chamber lime shaft kiln can avoid the damage of the whole arch masonry structure and prolong the service life.

The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structural changes made by the contents of the specification and the drawings, or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides an arch brickwork structure for two thorax lime shaft kiln connect passage, its characterized in that, encircles including the second floor that is located inboard first floor and is located the outside, wherein, first floor encircles and all adopts wedge brick to build by laying bricks or stones the constitution on the second floor arch thickness direction, uses fire-resistant mud to build by laying bricks or stones between the wedge brick that first floor encircles and the second floor and connects, and first floor encircles and builds by laying bricks or stones the connection through fire-resistant mud between the second floor arch.

2. The arched masonry structure for a connecting shaft of a double-bore lime shaft kiln according to claim 1, characterised in that the thickness of the arch of the first storey is greater than the thickness of the arch of the second storey.

3. The arch-shaped masonry structure for a double-bore lime shaft kiln connecting channel according to claim 2, characterized in that the thickness of the first layer arch is 345mm to 380mm and the thickness of the second layer arch is 230mm to 300mm.

4. The arch-shaped masonry structure for a double-bore lime shaft kiln connecting passage according to claim 1, wherein the wedge-shaped bricks constituting the first layer of arch form an inner side having a circular angle equal to that of the wedge-shaped bricks constituting the second layer of arch.

5. The arch-shaped masonry structure for a double-bore lime shaft kiln connecting channel according to claim 4, wherein the arc shape of the first layer of the arch corresponds to a central angle of 60 ° to 80 °.

6. The arch-shaped masonry structure for a double-bore lime shaft kiln connecting passage according to claim 1, wherein the first arch and the second arch are constructed in a staggered manner such that adjacent wedge-shaped bricks are engaged with each other.

7. The arch-shaped masonry structure for a double-bore lime shaft kiln connecting passage according to claim 1, wherein the thickness of the gap between the wedge-shaped bricks constituting the first layer arch and the second layer arch is 2mm or less.

8. The arch-shaped masonry structure for a double-bore lime shaft kiln connecting passage according to claim 1, wherein the width of the wedge-shaped bricks constituting the first layer arch and the second layer arch is 220mm to 300mm.

9. The arched masonry structure for a connecting channel of a double-bore lime shaft kiln according to claim 1, wherein the refractoriness under load of the wedge-shaped bricks is not less than 1550 ℃.

10. The arch-shaped masonry structure for a double-bore lime shaft kiln connecting passage according to any one of claims 1 to 9, wherein the first layer of arch and the second layer of arch are each constructed by a layer of wedge-shaped bricks in the thickness direction.