CN109000477B

CN109000477B - Rotary kiln with barrel applying negative pressure

Info

Publication number: CN109000477B
Application number: CN201810908920.1A
Authority: CN
Inventors: 璧靛己; 赵强
Original assignee: Hebei University of Engineering
Current assignee: Hebei University of Engineering
Priority date: 2015-11-04
Filing date: 2015-11-04
Publication date: 2020-05-05
Anticipated expiration: 2035-11-04
Also published as: CN105180648B; CN109000477A; CN105180648A

Abstract

The invention discloses a rotary kiln with a barrel applying negative pressure, which comprises the barrel, a kiln head cover, a kiln tail cover and a sealing device, wherein the kiln head cover and the kiln tail cover are respectively connected with two ends of the barrel, the sealing device comprises a first sealing barrel cover and a second sealing barrel cover, and the rotary kiln is characterized in that: the first sealing cylinder cover and the second sealing cylinder cover are respectively arranged at the joint of the cylinder body and the kiln head cover and the joint of the cylinder body and the kiln tail cover; the first sealing cylinder cover and the second sealing cylinder cover comprise T-shaped cavities; the cylinder body penetrates through the T-shaped cavity; the tail part of the T-shaped cavity is arranged with the cylinder body; the front end of the T-shaped cavity is fixed with a kiln head cover or a kiln tail cover; the inner side of the T-shaped cavity is provided with a T-shaped inflatable inner container and a fold ring arranged on the front side of the T-shaped inflatable inner container. According to the rotary kiln, when the cylinder is internally provided with positive pressure, the T-shaped inflatable liner acts on the wrinkle ring, materials are difficult to leak, and when the cylinder is internally provided with negative pressure, the wrinkle ring and the wrinkle layer are sucked, so that air is prevented from entering.

Description

Rotary kiln with barrel applying negative pressure

Technical Field

The invention relates to mechanical equipment, in particular to a rotary kiln with a barrel applying negative pressure, and belongs to the technical field of rotary kilns.

Background

The rotary kiln is an important thermal equipment for alumina factories, cement factories and other metallurgical and chemical industries. The rotary kiln comprises a barrel body, a kiln head cover and a kiln tail cover which are respectively fixed at two ends of the barrel body, wherein the kiln head cover or the kiln tail cover inevitably exists between the barrel body

There is a gap. When the rotary kiln is operated under negative pressure, external air with high pressure enters the cylinder of the rotary kiln, so that combustible materials in the kiln are combusted or the quality of products is reduced; when the rotary kiln is operated at positive pressure, the materials in the barrel of the rotary kiln are splashed, and dust is splashed out of the barrel, so that the production safety is directly influenced; the Chinese application number 201310033179.6 discloses a rotary kiln with a barrel body applying negative pressure, which comprises a barrel body, a kiln head cover and a kiln tail cover, wherein the kiln head cover and the kiln tail cover are respectively connected to two ends of the barrel body; the first end of the second sealing cylinder cover is connected to the outer wall of the kiln tail cover through a first connecting structure, the second end of the second sealing cylinder cover is connected to the cylinder through a second connecting structure, one of the first connecting structure and the second connecting structure at the two ends of the second sealing cylinder cover is a fixed connecting structure, and the other one of the first connecting structure and the second connecting structure is a movable sealing structure. The invention solves the problem that the air outside the rotary kiln enters the cylinder of the rotary kiln and the gas in the cylinder of the rotary kiln carries the material to leak; although the technical scheme can solve the problems of material splashing and air entering the rotary kiln, the structure is complex and the cost investment is large.

Disclosure of Invention

Technical problem to be solved

In order to solve the problems, the invention provides the rotary kiln with the barrel body applying negative pressure, which is low in cost and can well avoid the problems that air enters the barrel body and materials in the barrel body fly out.

(II) technical scheme

The rotary kiln comprises a cylinder body, a kiln head cover, a kiln tail cover and a sealing device, wherein the kiln head cover and the kiln tail cover are respectively connected to two ends of the cylinder body, the sealing device comprises a first sealing cylinder cover and a second sealing cylinder cover, and the rotary kiln is characterized in that: the first sealing cylinder cover and the second sealing cylinder cover are respectively arranged at the joint of the cylinder body and the kiln head cover and the joint of the cylinder body and the kiln tail cover; the first sealing cylinder cover and the second sealing cylinder cover comprise T-shaped cavities; the cylinder body penetrates through the T-shaped cavity; the tail part of the T-shaped cavity is arranged with the cylinder body; the front end of the T-shaped cavity is fixed with a kiln head cover or a kiln tail cover; the inner side of the T-shaped cavity is provided with a T-shaped inflatable inner container and a fold ring arranged on the front side of the T-shaped inflatable inner container.

Further, the T-shaped inflatable inner container is provided with an air nozzle; the air tap radially runs through the T-shaped cavity.

In a preferred embodiment, the T-shaped inflatable inner container is coated with a wrinkled layer at the periphery.

As a preferred embodiment, a flange plate is welded on the kiln head cover and the kiln tail cover; and the T-shaped cavity is fixed with the flange plate.

(III) advantageous effects

The rotary kiln has a simple sealing structure, the T-shaped inflatable liner is inflated to fully expand the whole T-shaped cavity, and the fold rings and the fold layers are tightly attached to the gaps.

Drawings

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

FIG. 2 is a schematic view of the T-shaped inflatable inner container of the present invention.

Detailed Description

The rotary kiln with the barrel body applying negative pressure as shown in fig. 1 and fig. 2 comprises a barrel body 1, a kiln head cover 2, a kiln tail cover 3 and a sealing device, wherein the kiln head cover 2 and the kiln tail cover 3 are respectively connected to two ends of the barrel body 1, the sealing device comprises a first sealing barrel cover 4 and a second sealing barrel cover 5, and the first sealing barrel cover 4 and the second sealing barrel cover 5 are respectively arranged at the joint of the barrel body 1 and the kiln head cover 2 and the joint of the barrel body 1 and the kiln tail cover 3; the first sealing cylinder cover 4 and the second sealing cylinder cover 5 comprise a T-shaped cavity 6; the barrel 1 penetrates through the T-shaped cavity 6; the tail part of the T-shaped cavity 6 is arranged with the cylinder body 1; the front end of the T-shaped cavity 6 is fixed with the kiln head cover 2 or the kiln tail cover 3; and a T-shaped inflatable inner container 7 and a fold ring 8 arranged at the front side of the T-shaped inflatable inner container 7 are arranged at the inner side of the T-shaped cavity 6.

The T-shaped inflatable inner container 7 is provided with an air nozzle 9; the air tap 9 radially penetrates through the T-shaped cavity 6.

The T-shaped inflatable inner container 7 is wrapped with a wrinkled layer (not shown).

A flange plate 10 is welded on the kiln head cover 2 and the kiln tail cover 3; the T-shaped cavity 6 is fixed with the flange plate 10.

Claims

1. The utility model provides a rotary kiln that negative pressure was applyed to barrel, includes barrel, kiln hood cover, kiln hood and sealing device, and kiln hood cover and kiln hood are connected respectively at the both ends of barrel, sealing device includes first sealed cover and the sealed cover of second, its characterized in that: the first sealing cylinder cover and the second sealing cylinder cover are respectively arranged at the joint of the cylinder body and the kiln head cover and the joint of the cylinder body and the kiln tail cover; the first sealing cylinder cover and the second sealing cylinder cover comprise T-shaped cavities; the cylinder body penetrates through the T-shaped cavity; the tail part of the T-shaped cavity is arranged with the cylinder body; the front end of the T-shaped cavity is fixed with a kiln head cover or a kiln tail cover; the inner side of the T-shaped cavity is provided with a T-shaped inflatable inner container and a fold ring arranged on the front side of the T-shaped inflatable inner container; the T-shaped inflatable inner container is provided with an air nozzle; the air tap radially penetrates through the T-shaped cavity; the periphery of the T-shaped inflatable inner container is coated with a wrinkle layer; a flange plate is welded on the kiln head cover and the kiln tail cover; the T-shaped cavity is fixed with the flange plate; the kiln head cover and the kiln tail cover are respectively arranged at two ends of the cylinder body.