CN215337641U

CN215337641U - Rotary kiln necking with good calcining effect

Info

Publication number: CN215337641U
Application number: CN202121083828.XU
Authority: CN
Inventors: 张传胤; 王超; 汪明; 吉双林; 许岩
Original assignee: Anhui Panjing Cement Co ltd
Current assignee: Anhui Panjing Cement Co ltd
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2021-12-28
Anticipated expiration: 2031-05-20

Abstract

The utility model discloses a rotary kiln throat with a good calcining effect, which comprises a throat and a reinforcing component, wherein the upper end and the lower end of the throat are respectively connected with a decomposing furnace and a kiln tail smoke chamber, the surface of the kiln tail smoke chamber is provided with a through hole, the surface of the inner wall of the throat is provided with a skinning-proof castable, the reinforcing component for improving the connecting strength between the throat and the decomposing furnace and the kiln tail smoke chamber is arranged at the upper end and the lower end of the throat, the reinforcing component comprises a reinforcing sleeve and a reinforcing ring, the reinforcing sleeve is fixed at the upper end and the lower end of the throat, and the reinforcing sleeve is respectively connected with the decomposing furnace and the kiln tail smoke chamber. This calcine effectual rotary kiln throat and be provided with through-hole and anti-skinning pouring material, the phenomenon that the skinning appears in the throat inner wall can be avoided to the anti-skinning pouring material through throat inner wall surface to improve ventilation efficiency, the ventilation effect in the kiln can be improved to the through-hole that cooperates kiln tail smoke-box surface, makes pulverized coal burning more complete, thereby improves and calcines the effect.

Description

Rotary kiln necking with good calcining effect

Technical Field

The utility model relates to the technical field of cement processing equipment, in particular to a rotary kiln necking with a good calcining effect.

Background

At the position of the whole cement production line system, the smoke chamber necking is the last channel of the material entering the rotary kiln through the whole preheater and the decomposing furnace system, the material pre-decomposed by heat exchange in the preheater passes through the five-stage cyclone blanking tube and then enters the rotary kiln through the smoke chamber necking for calcination, meanwhile, the high-temperature gas in the rotary kiln enters the decomposing furnace through the smoke chamber necking, the high-temperature gas entering the decomposing furnace not only provides partial decomposition energy for the material decomposition of the decomposing furnace, but also directly influences the decomposition of the material in the decomposing furnace and the combustion efficiency of pulverized coal because of the spurting effect generated at the smoke chamber necking, the smoke chamber necking is the convergence point of important gas and material in the whole system, therefore, the smoke chamber necking has great influence on the whole production process, the connection between the smoke chamber and the necking of the existing rotary kiln tail is weak, and the phenomenon of deformation and leakage of the kiln tail under the high-temperature environment is easily caused, and the inside of the throat is easy to be skinned, which easily affects the ventilation and calcination effects in the kiln.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a rotary kiln throat with a good calcining effect, and aims to solve the problems that the joint between the tail smoke chamber of the existing rotary kiln and the throat is weak and the throat is easy to crust.

In order to achieve the purpose, the utility model provides the following technical scheme: a rotary kiln necking with good calcining effect, which comprises a necking and a reinforcing component,

the upper end and the lower end of the throat are respectively connected with the decomposing furnace and the kiln tail smoke chamber, the surface of the kiln tail smoke chamber is provided with a through hole, and the inner wall surface of the throat is provided with an anti-skinning castable;

and the reinforcing components are arranged at the upper end and the lower end of the throat and used for improving the connection strength between the throat and the decomposing furnace and between the throat and the kiln tail smoke chamber.

Preferably, the reinforcing component comprises a reinforcing sleeve and a reinforcing ring, the reinforcing sleeve is fixed at the upper end and the lower end of the throat, the reinforcing sleeve is respectively connected with the decomposing furnace and the kiln tail smoke chamber, and the reinforcing ring is installed on the outer side of the reinforcing sleeve.

Preferably, the necking is in a large-diameter round shape with a narrow upper part and a wide lower part, and the lower part of the necking is in a trapezoidal design.

Preferably, the through holes are provided with a plurality of groups, and the through holes are arranged at equal intervals.

Preferably, the anti-skinning castable is made of Kedeli silicon carbide 60 s.

Preferably, an expansion joint is arranged above the necking.

Preferably, the reinforcing sleeve is made of high-temperature-resistant materials.

Compared with the prior art, the utility model has the beneficial effects that: the rotary kiln with good calcining effect is reduced,

(1) the through holes and the anti-skinning castable are arranged, the anti-skinning castable on the surface of the inner wall of the throat can prevent the inner wall of the throat from skinning, so that the ventilation efficiency is improved, the ventilation effect in the kiln can be improved by matching with the through holes on the surface of the kiln tail smoke chamber, the pulverized coal is more completely combusted, and the calcining effect is improved;

(2) be provided with reinforcing sleeve and reinforcing ring, can improve the intensity of junction between throat and decomposing furnace and the kiln tail smoke chamber through reinforcing sleeve and reinforcing ring to avoid appearing leading to the phenomenon of warping or damaging because of high temperature, improve its life.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic front sectional view of the present invention;

FIG. 3 is a schematic view of the bottom view of the present invention.

In the figure: 1. necking, 2, a decomposing furnace, 3, a kiln tail smoke chamber, 4, a through hole, 5, an anti-skinning castable, 6, a reinforcing component, 601, a reinforcing sleeve, 602 and a reinforcing ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a calcine effectual rotary kiln throat, as shown in fig. 1 and fig. 3, the upper and lower both ends of throat 1 are connected with dore furnace 2 and kiln tail smoke chamber 3 respectively, throat 1 is the major diameter and goes up narrow wide circular down, and the lower part of throat 1 adopts trapezoidal design, make and improve the effect of calcining, improve and calcine the quality, and through-hole 4 has been seted up on the surface of kiln tail smoke chamber 3, through-hole 4 is provided with the multiunit, and its equidistant setting, improve the ventilation effect in the kiln, make buggy burning more comprehensive, the inner wall surface of throat 1 is provided with prevents skinning pouring material 5 simultaneously, the material of preventing skinning pouring material 5 is Kaideli carborundum 60s, the effectual inner wall skinning that prevents throat 1, improve the practicality, the top of throat 1 is provided with the expansion joint, prevent to be heated and cause throat 1 to warp, improve its life.

As shown in fig. 1 and 2, the reinforcing members 6 for improving the connection strength between the throat 1 and the decomposing furnace 2 and the kiln tail smoke chamber 3 are installed at the upper and lower ends of the throat 1, each reinforcing member 6 comprises a reinforcing sleeve 601 and a reinforcing ring 602, the reinforcing sleeves 601 are fixed at the upper and lower ends of the throat 1, the reinforcing sleeves 601 are respectively connected with the decomposing furnace 2 and the kiln tail smoke chamber 3, the reinforcing rings 602 are installed at the outer sides of the reinforcing sleeves 601, the reinforcing sleeves 601 are made of high-temperature-resistant materials, the strength of the connection positions between the throat 1 and the decomposing furnace 2 and the kiln tail smoke chamber 3 can be improved through the reinforcing sleeves 601 and the reinforcing rings 602, deformation and damage caused by high temperature are avoided, and the service life of the kiln tail smoke chamber is prolonged.

The working principle is as follows: when the rotary kiln necking with good calcining effect is used, the calcining effect in a kiln can be improved through the necking 1 which is narrow at the upper part and wide at the lower part, meanwhile, the anti-skinning castable 5 on the surface of the inner wall of the necking 1 can prevent the inner wall of the necking 1 from skinning, and the ventilation effect in the kiln can be improved by matching with the through hole 4 on the surface of the kiln tail smoke chamber 3, so that pulverized coal is combusted more comprehensively, and the reinforcing sleeve 601 and the reinforcing ring 602 on the upper end and the lower end of the necking 1 can improve the strength of the joint between the necking 1 and the decomposing furnace 2 and the kiln tail smoke chamber 3, thereby avoiding deformation and damage caused by high temperature, prolonging the service life, and completing the whole operation.

The terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for simplicity of description only and are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operative in a particular orientation, and are not to be considered limiting of the claimed invention.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a calcine effectual rotary kiln throat, includes throat (1) and reinforcement component (6), its characterized in that:

the kiln tail smoke chamber comprises a throat (1), wherein the upper end and the lower end of the throat (1) are respectively connected with a decomposing furnace (2) and a kiln tail smoke chamber (3), a through hole (4) is formed in the surface of the kiln tail smoke chamber (3), and a skinning-preventing castable (5) is arranged on the surface of the inner wall of the throat (1);

and the reinforcing component (6) is used for improving the connection strength between the throat (1) and the decomposing furnace (2) and between the kiln tail smoke chamber (3), and the reinforcing component (6) is arranged at the upper end and the lower end of the throat (1).

2. The necking of the rotary kiln with good calcination effect as claimed in claim 1, is characterized in that: the reinforcing component (6) comprises a reinforcing sleeve (601) and a reinforcing ring (602), the reinforcing sleeve (601) is fixed at the upper end and the lower end of the throat (1), the reinforcing sleeve (601) is connected with the decomposing furnace (2) and the kiln tail smoke chamber (3) respectively, and the reinforcing ring (602) is installed on the outer side of the reinforcing sleeve (601).

3. The necking of the rotary kiln with good calcination effect as claimed in claim 1, is characterized in that: the necking (1) is in a large-diameter round shape with a narrow upper part and a wide lower part, and the lower part of the necking (1) adopts a trapezoidal design.

4. The necking of the rotary kiln with good calcination effect as claimed in claim 1, is characterized in that: the through holes (4) are provided with a plurality of groups which are arranged at equal intervals.

5. The necking of the rotary kiln with good calcination effect as claimed in claim 1, is characterized in that: the anti-skinning castable (5) is made of Kedeli silicon carbide 60 s.

6. The necking of the rotary kiln with good calcination effect as claimed in claim 1, is characterized in that: an expansion joint is arranged above the necking (1).

7. The necking of the rotary kiln with good calcination effect as claimed in claim 2, is characterized in that: the reinforcing sleeve (601) is made of high-temperature-resistant materials.