CN219178278U

CN219178278U - Fireproof brick structure for kiln head back iron of rotary kiln

Info

Publication number: CN219178278U
Application number: CN202223430720.0U
Authority: CN
Inventors: 宗雷; 司超伟; 闫涛; 张志豪; 韩文佳; 南建林; 高蕊; 姜鸿峰; 李明凯
Original assignee: Shandong Refractories Group Lunai Kiln Refractory Co ltd
Current assignee: Shandong Refractories Group Lunai Kiln Refractory Co ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-06-13
Anticipated expiration: 2032-12-21

Abstract

The utility model relates to the field of refractory materials and discloses a refractory brick structure for kiln head back iron of a rotary kiln, which comprises a refractory brick main body, wherein the refractory brick main body is provided with an outer arc, a lining brick connecting surface, an inner arc and a kiln head back iron bayonet boss, the outer arc of the refractory brick is sequentially provided with a rotary kiln cylinder contact surface, a stepped platform, a kiln head back iron connecting bolt hole groove and a chamfer angle from left to right, the lining brick connecting surface of the refractory brick is provided with a brick blocking ring bayonet and a lining brick contact surface, and the inner arc of the refractory brick is provided with a discharge end closing-in inclined surface and a contact plane. According to the utility model, the defect of long maintenance time and high difficulty caused by overall detachment of the integral pouring due to partial falling is overcome by optimizing the structural design, partial damage and partial maintenance are realized, the method has the characteristics of high rush-repair speed and long maintenance time, the shutdown maintenance time of the rotary kiln is reduced, the maintenance cost is saved, the production cost is reduced, and the yield is improved.

Description

Fireproof brick structure for kiln head back iron of rotary kiln

Technical Field

The utility model relates to the field of refractory materials, in particular to a refractory brick structure for kiln head back iron of a rotary kiln.

Background

In the field of refractory material production, a rotary kiln is used as important raw material calcination and cement production equipment, the stability of each structure plays a vital role in the normal operation of the kiln and the service life of the kiln, kiln head back iron is used as an important structure for protecting a kiln mouth barrel section made of common steel and avoiding burning loss of high-temperature flue gas, and refractory materials are arranged for protecting the kiln head back iron, so that the working temperature and abrasion of the kiln head back iron are reduced, and the stability of the structure is ensured.

At present, the monolithic casting unshaped refractory material is a kiln head back iron protection refractory material, but the monolithic casting unshaped refractory material has the following problems in the use process, the kiln head castable material is often subjected to local falling off, cracking and oxidation due to large vibration and loose back iron bolts caused by deformation of a kiln head barrel, so that the kiln head back iron is burnt, the service life of the back iron is reduced, the local falling of the monolithic casting material is required to be integrally removed and re-cast during maintenance, the maintenance time is long, and the unpacking difficulty can greatly influence the production.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a refractory brick structure for kiln head back iron of a rotary kiln.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a rotary kiln head is resistant firebrick structure for back iron, includes the brick body, brick body one side is provided with lining brick contact surface, brick body lower surface is close to lining brick contact surface one side and is provided with discharge end binding off inclined plane, brick body lower surface is kept away from lining brick contact surface one side and is provided with discharge end binding off contact plane, just discharge end binding off inclined plane and discharge end binding off contact plane boundary link to each other, brick body opposite side is provided with kiln head back iron bayonet socket boss, lining brick contact surface has been kept away from on brick body top and has been set gradually rotary kiln barrel contact surface, ladder type platform, kiln head back iron connecting bolt hole groove and chamfer, brick body rear side middle part is provided with the fixture block, brick body front side middle part is provided with the rectangular channel, kiln head back iron connecting bolt hole groove upper surface is provided with two pre-screw holes of transverse distribution.

As a further description of the above technical solution:

the size between the two sides of the brick body is 300mm, the length of the contact surface of the lining brick is 200mm, and the perpendicular distance between the lower end of the contact surface of the lining brick and the plane where the closing-in contact plane of the discharging end is located is 30mm.

As a further description of the above technical solution:

the size between the two sides of the brick body is 715mm, the length of the contact surface of the lining brick is 300mm, and the perpendicular distance between the lower end of the contact surface of the lining brick and the plane where the closing-in contact plane of the discharging end is located is 150mm.

As a further description of the above technical solution:

the chamfer may be designed in the shape of a chamfer.

As a further description of the above technical solution:

the chamfer may be designed in the shape of a rounded corner.

As a further description of the above technical solution:

the chamfer can be designed into a combination of chamfer and rounded corner.

As a further description of the above technical solution:

the upper side of the lining brick contact surface can be provided with a brick blocking ring bayonet.

As a further description of the above technical solution:

clamping grooves are formed in two sides of the middle of the front side and the rear side of the brick body.

The utility model has the following beneficial effects:

1. according to the refractory brick structure for the kiln head back iron, the structure is simple, the design is scientific and reasonable, the use is simple and convenient, the service life of the kiln head back iron is prolonged by reserving the expansion space and the bolt adjusting space, and the problems that the kiln head castable is frequently subjected to large vibration and back iron bolt loosening caused by deformation of a kiln head cylinder body and is subjected to local falling, cracking and oxidation, so that the kiln head back iron is burnt and the service life of the back iron is reduced are solved.

2. According to the refractory brick structure for the kiln head back iron, local damage and local maintenance are realized, the refractory brick structure has the characteristics of high rush-repair speed and long maintenance time, the production stopping and maintenance time of a rotary kiln is reduced, the maintenance cost is saved, the production cost is reduced, the yield is improved, and the problems that the local falling of an integral casting material needs to be integrally removed and re-cast when the kiln head back iron is maintained, the maintenance time is long, and the unpacking difficulty is high and the production is greatly influenced are solved.

Drawings

Fig. 1 is a schematic perspective view of a refractory brick structure for kiln head back iron of a rotary kiln according to the first embodiment of the present utility model;

fig. 2 is a schematic front perspective view of a refractory brick structure for kiln head back iron of a rotary kiln according to the present utility model;

fig. 3 is a side view of a refractory brick structure for a kiln head back iron of a rotary kiln.

Legend description:

1. a rotary kiln cylinder contact surface; 2. a stepped platform; 3. a kiln head back iron connecting bolt hole groove; 4. chamfering; 5. a closing-in inclined plane of the discharging end; 6. closing up the contact plane at the discharging end; 7. a brick blocking ring bayonet; 8. a lining brick contact surface; 9. pre-screw holes; 10. a clamping block; 11. a clamping groove; 12. rectangular grooves; 13. a kiln head back iron bayonet boss; 14. a brick body.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-3, one embodiment provided by the present utility model is: the utility model provides a rotary kiln head is resistant firebrick structure for back iron, including the brick body 14, brick body 14 one side is provided with inside lining brick contact surface 8, brick body 14 lower surface is close to inside lining brick contact surface 8 one side and is provided with discharge end binding off inclined plane 5, brick body 14 lower surface is kept away from inside lining brick contact surface 8 one side and is provided with discharge end binding off contact plane 6, and discharge end binding off inclined plane 5 links to each other with discharge end binding off contact plane 6 boundary, brick body 14 opposite side is provided with kiln head back iron bayonet socket boss 13, kiln head back iron bayonet boss 13's length is 45mm, relative kiln head back iron thickness increases 5mm, reserve expansion space for resistant firebrick, prevent the damage of heat stress's concentrated acceleration resistant firebrick, brick body 14 top is kept away from inside lining brick contact surface 8 and is provided with rotary kiln barrel contact surface 1 in proper order, ladder type platform 2, kiln head back iron connecting bolt hole groove 3 and chamfer 4, kiln head back iron connecting bolt hole groove 3 length is 168mm, rotary kiln barrel contact surface 1 place plane and kiln head back iron connecting bolt hole groove 3 place plane distance is 72mm, brick body 14 rear side middle part is provided with fixture block 10, brick body 14 front part is provided with 12, two lateral bolt hole connecting bolt hole 9 are arranged on the front surface,

the size between the two sides of the brick body 14 is 300mm, the length dimension of the lining brick contact surface 8 is 200mm, the vertical distance between the lower end of the lining brick contact surface 8 and the plane where the discharging end closes up the contact plane 6 is 30mm, the size between the two sides of the brick body 14 is 715mm, the length dimension of the lining brick contact surface 8 is 300mm, the vertical distance between the lower end of the lining brick contact surface 8 and the plane where the discharging end closes up the contact plane 6 is 150mm, the height of the stepped platform 2 can be adjusted according to the thickness of the kiln head iron block so as to meet the fit of the kiln head iron block, the length of the hole slot of the kiln head iron block connecting bolt hole slot 3 can be adjusted according to the distance between the kiln head iron block bolt holes and the bolt specification, the chamfer 4 can be designed into a chamfer shape, the chamfer angle and a chamfer combination shape can be designed, the upper side of the lining brick contact surface 8 can be provided with a blocking brick clamping opening 7, the length of the kiln head iron clamping opening 13 can be properly increased by 10mm according to the thickness of the kiln head iron clamping opening, and the middle part of the front side and rear side of the brick body 14 is provided with clamping slots 11.

Working principle: the kiln head back iron connecting bolt hole groove 3 can realize local damage local maintenance through the pre-screw hole 9, has the characteristics of high rush repair speed and long maintenance time, can realize quick alignment between bricks through the mutual clamping of the clamping block 10 and the clamping groove 11, can adjust the hole groove length of the kiln head back iron connecting bolt hole groove 3 according to the interval of kiln head back iron bolt holes and the specification of bolts, can increase 3-10mm relative to the thickness of kiln head back iron in the length of a kiln head back iron bayonet boss 13, reserves expansion space for refractory bricks, prevents the damage of the refractory bricks due to the concentrated acceleration of thermal stress, and is more beneficial to prolonging the service life of the kiln head back iron through reserving the expansion space.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a rotary kiln head is refractory brick structure for back iron, includes the brick body (14), its characterized in that: the brick body (14) one side is provided with inside lining brick contact surface (8), brick body (14) lower surface is close to inside lining brick contact surface (8) one side and is provided with discharge end binding off inclined plane (5), brick body (14) lower surface is kept away from inside lining brick contact surface (8) one side and is provided with discharge end binding off contact plane (6), just discharge end binding off inclined plane (5) and discharge end binding off contact plane (6) boundary link to each other, brick body (14) opposite side is provided with kiln head back iron bayonet socket boss (13), rotary kiln barrel contact surface (1), cascaded platform (2), kiln head back iron connecting bolt hole groove (3) and chamfer (4) have been kept away from on brick body (14) top in proper order, brick body (14) rear side middle part is provided with fixture block (10), brick body (14) front side middle part is provided with rectangular channel (12), kiln head back iron connecting bolt hole groove (3) upper surface is provided with two transversely distributed pre-screw hole (9).

2. The refractory brick structure for kiln head back iron of a rotary kiln as set forth in claim 1, wherein: the size between the two sides of the brick body (14) is 300mm, the length size of the lining brick contact surface (8) is 200mm, and the vertical distance between the lower end of the lining brick contact surface (8) and the plane where the discharge end closing-in contact plane (6) is located is 30mm.

3. The refractory brick structure for kiln head back iron of a rotary kiln as set forth in claim 1, wherein: the size between the two sides of the brick body (14) is 715mm, the length size of the lining brick contact surface (8) is 300mm, and the vertical distance between the lower end of the lining brick contact surface (8) and the plane where the discharge end closing-in contact plane (6) is located is 150mm.

4. The refractory brick structure for kiln head back iron of a rotary kiln as set forth in claim 1, wherein: the chamfer (4) can be designed in the shape of a chamfer.

5. The refractory brick structure for kiln head back iron of a rotary kiln as set forth in claim 1, wherein: the chamfer (4) can be designed as a rounded shape.

6. The refractory brick structure for kiln head back iron of a rotary kiln as set forth in claim 1, wherein: the chamfer (4) can be designed into a combination shape of a chamfer angle and a round angle.

7. The refractory brick structure for kiln head back iron of a rotary kiln as set forth in claim 1, wherein: the upper side of the lining brick contact surface (8) can be provided with a brick blocking ring bayonet (7).

8. The refractory brick structure for kiln head back iron of a rotary kiln as set forth in claim 1, wherein: clamping grooves (11) are formed in two sides of the middle of the front side and the rear side of the brick body (14).