CN219244223U

CN219244223U - Rotary kiln

Info

Publication number: CN219244223U
Application number: CN202223243957.8U
Authority: CN
Inventors: 蒋禹; 罗佳
Original assignee: Wuxi Yuan Neng Refractory Materials Co ltd
Current assignee: Wuxi Yuan Neng Refractory Materials Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-06-23
Anticipated expiration: 2032-12-05

Abstract

The utility model relates to a rotary kiln which comprises a kiln body, wherein the kiln body comprises a middle low temperature section and a high temperature section in the direction of a central line, one end of the kiln body is a kiln head, the other end of the kiln body is a kiln tail, the kiln head is arranged on the high temperature section, the kiln tail is arranged on the middle low temperature section, the kiln body comprises an inner liner layer, a nanometer heat insulation layer and an outer protection layer in the radial direction, the inner liner layer comprises a plurality of precast brick units and castable units, the precast brick units and the castable units are distributed at intervals, the precast brick units comprise precast bricks, a grabbing nail I is arranged in the precast bricks, the castable units comprise castable blocks, and grabbing nails II are arranged in the castable blocks. The utility model has good impact resistance, high connection strength of the lining layer, difficult falling off and long service life.

Description

Rotary kiln

Technical Field

The utility model relates to a rotary kiln, in particular to a prefabricated brick and castable combined rotary kiln.

Background

The rotary kiln belongs to dynamic kiln, and has wide application in building material, metallurgy, color, chemical industry and other industry, and compared with other industrial kiln, the rotary kiln has the main characteristics that refractory material built in the kiln rotates together with the kiln body at high temperature, and the refractory material is not only subjected to thermal shock, erosion and abrasion of kiln gas and materials, but also subjected to stress such as extrusion and the like between the refractory material and the shell during vibration and rotation. At present, the problems that the impact resistance is common, the refractory material is easy to fall off and the like are commonly existed.

Disclosure of Invention

The utility model aims to: the utility model aims to overcome the defects in the prior art and provide the rotary kiln which has good shock resistance, high connection strength of the inner liner, difficult falling and long service life.

The technical scheme is as follows: in order to solve the technical problems, the rotary kiln comprises a kiln body, wherein the kiln body comprises a middle low temperature section and a high temperature section in the direction of a central line, one end of the kiln body is a kiln head, the other end of the kiln body is a kiln tail, the kiln head is arranged on the high temperature section, the kiln tail is arranged on the middle low temperature section, the kiln body comprises an inner liner, a nanometer heat insulation layer and an outer protection layer in the radial direction, the inner liner comprises a plurality of precast brick units and castable units, the precast brick units and the castable units are distributed at intervals, the precast brick units comprise precast bricks, a grabbing nail I is arranged in the precast bricks, the castable units comprise casting blocks, and grabbing nails II are arranged in the casting blocks.

Further, the inner liner is composed of 26 groups of precast brick units and 26 groups of castable units.

Further, the precast brick unit comprises a zirconia corundum mullite precast brick area and a silicon carbide corundum precast brick area, wherein the zirconia corundum mullite precast brick area is arranged at a high temperature section, and the silicon carbide corundum precast brick area is arranged at a middle-low temperature section.

Further, the castable unit comprises a zirconia-corundum-mullite castable zone and a silicon carbide-corundum castable zone, wherein the zirconia-corundum-mullite castable zone is arranged at a high-temperature section, and the silicon carbide-corundum castable zone is arranged at a medium-low-temperature section.

Further, the prefabricated brick comprises a brick body, wherein a connecting groove is formed in the left end face of the brick body, a connecting protrusion is arranged on the right end face of the brick body, a groove I is formed in the front end face of the brick body, a groove II is formed in the rear end face of the brick body, and two grabbing nails I are arranged on the brick body.

Further, the grabbing nail I comprises a U-shaped main body, one end of the opening of the U-shaped main body is connected with an extension body I, the other end of the opening of the U-shaped main body is provided with an extension body II, a reinforcing connector is arranged in the U-shaped main body, the U-shaped main body is arranged in a brick body, one side of the U-shaped main body is arranged in the groove I in a penetrating mode, and the other side of the U-shaped main body is arranged in the groove II in a penetrating mode.

Further, the grab nails II are divided into a single-rod Y type and a double-rod Y type.

The beneficial effects are that: compared with the prior art, the utility model has the remarkable advantages that: the utility model adopts 26 groups of prefabricated brick units and 26 groups of castable units to form an inner liner, the prefabricated brick comprises a brick body, a connecting groove is arranged on the left end face of the brick body, a connecting protrusion is arranged on the right end face of the brick body, a groove I is arranged on the front end face of the brick body, a groove II is arranged on the rear end face of the brick body, two grabbing nails I are arranged on the brick body, each grabbing nail I comprises a U-shaped main body, one end of an opening of the U-shaped main body is connected with an extension body I, the other end of the opening of the U-shaped main body is provided with an extension body II, a reinforcing connector is arranged in the U-shaped main body, one side of the U-shaped main body is arranged in the groove I in a penetrating manner, and the other side of the U-shaped main body is arranged in the groove II in a penetrating manner, so that the whole structure is firm, the connecting strength is high, the shock resistance is good, the kiln body comprises a middle-low temperature section and a high-temperature section in the direction of a central line, a zirconia corundum mullite prefabricated brick area is arranged at the high-temperature section, a zirconia corundum mullite prefabricated brick area is arranged at the middle-low-temperature section, a zirconia corundum mullite castable area is arranged at the high-temperature section, a middle-low-temperature section, and a reinforced corundum castable area is arranged at the middle-low-temperature section, a kiln body is provided with a protection layer, and the whole heat insulation performance is further, the whole structure, and the whole structure has a long service life, and practical requirements.

Drawings

FIG. 1 is a schematic view of the structure of the present utility model in the direction of the center line;

FIG. 2 is a schematic view of the radial direction structure of the present utility model;

FIG. 3 is a schematic view of the distribution structure of the precast brick units in the present utility model;

FIG. 4 is a schematic diagram of the distribution structure of the castable unit in the present utility model;

FIG. 5 is a top view of the connecting structure of the prefabricated brick and the grab nail I in the utility model;

FIG. 6 is a cross-sectional view I of the connection of the prefabricated brick and the grab nail I of the present utility model;

FIG. 7 is a cross-sectional view II of the connection of the prefabricated brick and the grab nail I of the utility model;

FIG. 8 is a schematic view of the structure of the grab nail I of the utility model;

FIG. 9 is a schematic front view of the single-rod Y-shaped grab nail II;

FIG. 10 is a schematic side view of a single-rod Y-shaped grab nail II;

FIG. 11 is a schematic elevational view of a double-bar Y-shaped tack II of the present utility model;

FIG. 12 is a schematic side view of a double-bar Y-shaped staple II of the present utility model.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11 and fig. 12, the rotary kiln according to the utility model comprises a kiln body, wherein the kiln body comprises a middle-low temperature section 1 and a high-temperature section 2 in the direction of a central line, one end of the kiln body is a kiln head 3, the other end of the kiln body is a kiln tail 4, the kiln head 3 is arranged on the high-temperature section 2, the kiln tail 4 is arranged on the middle-low temperature section 1, the kiln body comprises an inner liner, a nano heat insulation layer 5 and an outer protection layer 6 in the radial direction, the inner liner comprises 26 groups of precast brick units and 26 groups of castable units, the precast brick units and the castable units are distributed at intervals, the precast brick units comprise a corundum mullite precast brick area and a silicon carbide brick precast brick area, and the corundum mullite precast brick area is arranged at the high-temperature section 2, the silicon carbide corundum prefabricated brick area is arranged at the middle-low temperature section 1, the castable unit comprises a zirconia corundum mullite castable area and a silicon carbide corundum castable area, the zirconia corundum mullite castable area is arranged at the high temperature section 2, the silicon carbide corundum castable area is arranged at the middle-low temperature section 1, the prefabricated brick unit comprises a prefabricated brick 7, the prefabricated brick 7 comprises a brick body 11, a connecting groove 12 is arranged on the left end face of the brick body 11, a connecting bulge 13 is arranged on the right end face, a groove I14 is arranged on the front end face, a groove II 15 is arranged on the rear end face, two grabbing nails I8 are arranged on the brick body 11, the grabbing nails I8 comprise U-shaped main bodies 16, an extension body I17 is arranged at one end of the opening of the U-shaped main bodies 16 in a connecting way, an extension body II 18 is arranged at the other end, a reinforcing connecting body 19 is arranged in the U-shaped main bodies 16, the U-shaped main body 16 is arranged in the brick body 11, one side of the U-shaped main body 16 is arranged in the groove I14 in a penetrating manner, the other side of the U-shaped main body 16 is arranged in the groove II 15 in a penetrating manner, the castable unit comprises a castable block 9, a grabbing nail II 10 is arranged in the castable block 9, and the grabbing nail II 10 is divided into a single-rod Y type and a double-rod Y type.

The utility model adopts 26 groups of prefabricated brick units and 26 groups of castable units to form an inner liner, the prefabricated brick comprises a brick body, a connecting groove is arranged on the left end face of the brick body, a connecting protrusion is arranged on the right end face of the brick body, a groove I is arranged on the front end face of the brick body, a groove II is arranged on the rear end face of the brick body, two grabbing nails I are arranged on the brick body, each grabbing nail I comprises a U-shaped main body, one end of an opening of the U-shaped main body is connected with an extension body I, the other end of the opening of the U-shaped main body is provided with an extension body II, a reinforcing connector is arranged in the U-shaped main body, one side of the U-shaped main body is arranged in the groove I in a penetrating manner, and the other side of the U-shaped main body is arranged in the groove II in a penetrating manner, so that the whole structure is firm, the connecting strength is high, the shock resistance is good, the kiln body comprises a middle-low temperature section and a high-temperature section in the direction of a central line, a zirconia corundum mullite prefabricated brick area is arranged at the high-temperature section, a zirconia corundum mullite prefabricated brick area is arranged at the middle-low-temperature section, a zirconia corundum mullite castable area is arranged at the high-temperature section, a middle-low-temperature section, and a reinforced corundum castable area is arranged at the middle-low-temperature section, a kiln body is provided with a protection layer, and the whole heat insulation performance is further, the whole structure, and the whole structure has a long service life, and practical requirements.

The present utility model provides a method and a thought, and a method for implementing the technical scheme are numerous, the above description is only a preferred embodiment of the present utility model, and it should be noted that, for those skilled in the art, several improvements and modifications can be made, and these improvements and modifications should also be regarded as protection scope of the present utility model, and each component that is not explicitly described in the present embodiment can be implemented by the prior art.

Claims

1. The rotary kiln is characterized in that: the kiln comprises a kiln body, the kiln body comprises a middle low temperature section (1) and a high temperature section (2) in the direction of a central line, one end of the kiln body is a kiln head (3) and the other end is a kiln tail (4), the kiln head (3) is arranged on the high temperature section (2), the kiln tail (4) is arranged on the middle low temperature section (1), the kiln body comprises an inner liner layer, a nanometer heat insulation layer (5) and an outer protection layer (6) in the radial direction, the inner liner layer comprises a plurality of precast brick units and castable units, the precast brick units and the castable units are distributed at intervals, the precast brick units comprise precast bricks (7), a grabbing nail I (8) is arranged in the precast bricks (7), the castable units comprise castable blocks (9), and grabbing nails II (10) are arranged in the castable blocks (9).

2. The rotary kiln as recited in claim 1, wherein: the lining layer consists of 26 groups of prefabricated brick units and 26 groups of castable units.

3. The rotary kiln as recited in claim 1, wherein: the prefabricated brick unit comprises a zirconia corundum mullite prefabricated brick area and a silicon carbide corundum prefabricated brick area, wherein the zirconia corundum mullite prefabricated brick area is arranged at the high-temperature section (2), and the silicon carbide corundum prefabricated brick area is arranged at the middle-low-temperature section (1).

4. The rotary kiln as recited in claim 1, wherein: the castable unit comprises a zirconia-corundum-mullite castable zone and a silicon carbide-corundum castable zone, wherein the zirconia-corundum-mullite castable zone is arranged at the high-temperature section (2), and the silicon carbide-corundum castable zone is arranged at the middle-low-temperature section (1).

5. The rotary kiln as recited in claim 1, wherein: the prefabricated brick (7) comprises a brick body (11), wherein a connecting groove (12) is formed in the left end face of the brick body (11), a connecting protrusion (13) is arranged on the right end face, a groove I (14) is formed in the front end face, a groove II (15) is formed in the rear end face, and two grabbing nails I (8) are arranged on the brick body (11).

6. The rotary kiln as recited in claim 5, wherein: the grabbing nail I (8) comprises a U-shaped main body (16), one end of the opening of the U-shaped main body (16) is connected with an extension body I (17), the other end of the U-shaped main body is provided with an extension body II (18), a reinforcing connecting body (19) is arranged in the U-shaped main body (16), the U-shaped main body (16) is arranged in a brick body (11), one side of the U-shaped main body (16) is arranged in a groove I (14) in a penetrating mode, and the other side of the U-shaped main body is arranged in a groove II (15) in a penetrating mode.

7. The rotary kiln as recited in claim 1, wherein: the grabbing nails II (10) are divided into single-rod Y-shaped nails and double-rod Y-shaped nails.