CN214305268U

CN214305268U - Central discharging sealing structure of rotary dryer

Info

Publication number: CN214305268U
Application number: CN202120034004.7U
Authority: CN
Inventors: 赵旭; 韩东钊; 张春丽; 路原睿; 王天宝; 董富荣; 徐澍
Original assignee: Tianhua Institute of Chemical Machinery and Automation Co Ltd
Current assignee: Tianhua Institute of Chemical Machinery and Automation Co Ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-09-28
Anticipated expiration: 2031-01-07

Abstract

The utility model relates to a central ejection of compact seal structure of rotary dryer, including central discharging pipe, ejection of compact case and central gas shaft, its characterized in that: a central discharging pipe bearing flange, a bearing and a central air shaft flange are respectively arranged on the central discharging pipe; the inner side of the discharge box is provided with a large bearing which is fixed on the central discharge pipe through an inner side bearing bracket and a central discharge pipe bearing flange respectively; the outer side of the discharge box is respectively provided with a discharge box bearing flange and an outer side bearing support, and the outer side bearing support is connected with a bearing outer ring sliding bearing seat; the bearing outer ring sliding bearing seat is provided with an outer side bearing, and the outer side bearing is connected with the bearing and the central air shaft flange; an annular supporting plate is arranged outside the outer side bearing support, and a reinforcing rib plate is arranged between the annular supporting plate and the central air shaft. The utility model discloses compact structure, manufacturing and transformation low cost, and stable, do not have the leakage, overhaul convenient and fast simultaneously.

Description

Central discharging sealing structure of rotary dryer

Technical Field

The utility model relates to a seal structure especially relates to a rotary dryer center ejection of compact seal structure.

Background

With the rapid development of the chemical industry and the coal chemical industry, the size of the rotary dryer is more and more required due to the large capacity demand and the environment-friendly requirement of energy conservation and emission reduction. Along with the volume increase of equipment, the diameter increase of center discharging pipe, sealed face diameter increase, the friction linear velocity increases, leads to the sealed condition appearance that leads to the material to reveal often appearing because excessive wear of the ejection of compact of current structure.

The existing discharging seal is a cantilever-supported structure, and has the following disadvantages:

the method has the advantages that in the installation process of the discharging box, whether spring hanging or spring supporting is adopted, the outer diameter of a packing box of the discharging box cannot be guaranteed to be concentric with a discharging sealing shaft sleeve, and the eccentric wear phenomenon of sealing packing is caused by eccentricity;

due to the cantilever structure, friction surfaces far away from the support bearing are seriously rubbed, the heat productivity is large, and the service life of the sealing filler is short;

thirdly, the metal hole ring is dislocated due to the abrasion of the filler, so that the metal hole ring is contacted with the rotary sealing friction surface, metal scraping is further caused, the sealing friction surface is damaged, a large amount of heat is generated, and the filler is burnt;

fourthly, due to abrasion of the sealing filler, a material leakage condition is generated after the sealing filler runs soon;

due to the fact that friction and the center pipe beat per se, the discharging box vibrates greatly, and the service life of a pipeline connected with the discharging box is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a stable, leak-free rotary dryer center ejection of compact seal structure is provided.

In order to solve the problem, a central ejection of compact seal structure of rotary dryer, including central discharging pipe, play workbin and central gas shaft, its characterized in that: a central discharging pipe bearing flange, a bearing and a central air shaft flange are respectively arranged on the central discharging pipe; the inner side of the discharge box is provided with a large bearing which is fixed on the central discharge pipe through an inner side bearing bracket and a central discharge pipe bearing flange respectively; the outer side of the discharge box is respectively provided with a discharge box bearing flange and an outer side bearing support, and the outer side bearing support is connected with a bearing outer ring sliding bearing seat; the bearing outer ring sliding bearing seat is provided with an outer side bearing, and the outer side bearing is connected with the bearing and the central air shaft flange; an annular supporting plate is arranged outside the outer side bearing support, and a reinforcing rib plate is arranged between the annular supporting plate and the central air shaft.

And the matching degree of the bearing flange of the central discharging pipe and the spigot of the bearing and the central gas shaft flange is matched with the concentricity of the central discharging pipe.

The outer side bearing support and the bearing outer ring sliding bearing seat are matched through a spigot and fastened through bolts, and have uniform concentricity in the circumferential direction.

The large bearing and the outer bearing are matched in concentricity.

And the annular supporting plate and the dryer cylinder are provided with inspection and repair holes.

Compared with the prior art, the utility model has the following advantage:

1. the utility model discloses be equipped with central discharging pipe bearing flange on central discharging pipe respectively, bearing and central gas shaft flange, adopt both ends support mode, will go out the workbin steady support on central discharging pipe, one end bearing is the stiff end bearing, one end bearing is the slip end, it is asynchronous with central gas shaft thermal expansion for guaranteeing ejection of compact box, the slip end adopts the bearing frame of taking the slip outer lane, ensure the thermal expansion freedom of the two, thereby guarantee good stability, avoid the scraping of metal eyelet and center tube rotational friction surface.

2. The utility model discloses the outside of china and foreign side bearing support is equipped with the annular support board, is equipped with the inspection access hole on this annular support board and the desiccator barrel, under the prerequisite of proof intensity, both conveniently observes the sealed leakage whether in the workbin outside, can make things convenient for the workman to adjust gland bolt elasticity again.

3. The utility model discloses a both ends are supported can fundamentally solve because preceding cantilever supports lead to ejection of compact box and central discharging pipe decentraction, arouse the sealed eccentric packing of the sealed friction surface of the central discharging pipe of gyration and the inside of ejection of compact case, lead to that the wearing and tearing of packing are serious, calorific capacity is big, the metal eyelet leads to with the metal friction of the sealed face of friction because the wearing and tearing deformation of packing, produces huge heat, burns out the packing, final sealed inefficacy leads to revealing of material.

4. The utility model discloses a bearing is connected for the ejection of compact case installation is simple, and the installation accuracy is high, guarantees even with the seal chamber clearance of central discharging pipe formation, and the concentricity is high.

5. The utility model discloses compact structure, manufacturing and transformation low cost, and overhaul convenient and fast, it is the same with current arrangement to keep sealed form simultaneously.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

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

Fig. 2 is a schematic view of the inner side sealing structure of the present invention.

Fig. 3 is a schematic view of the outer side sealing structure of the present invention.

Fig. 4 is a schematic diagram of the structure of the utility model viewed from the left outside.

In the figure: 1-central tapping pipe; 2-central discharge pipe bearing flange; 3-large bearing; 4-inner side bearing support; 5-discharging the material box; 6-discharging box bearing flange; 7-outer bearing support; 8-bearing outer ring sliding bearing seat; 9-outboard bearing; 10-bearing and central gas shaft flange; 11-a ring-shaped support plate; 12-reinforcing plate; 13-central gas axis.

Detailed Description

As shown in FIGS. 1 to 4, a central discharging sealing structure of a rotary dryer comprises a central discharging pipe 1, a discharging box 5 and a central air shaft 13.

A central discharging pipe bearing flange 2, a bearing and a central air shaft flange 10 are respectively arranged on the central discharging pipe 1; the inner side of the discharging box 5 is provided with a large bearing 3, and the large bearing 3 is fixed on the central discharging pipe 1 through an inner side bearing bracket 4 and a central discharging pipe bearing flange 2 respectively; the outer side of the discharging box 5 is respectively provided with a discharging box bearing flange 6 and an outer side bearing support 7, and the outer side bearing support 7 is connected with a bearing outer ring sliding bearing seat 8; an outer side bearing 9 is arranged on the bearing outer ring sliding bearing seat 8, and the outer side bearing 9 is connected with a central air shaft flange 10; an annular supporting plate 11 is arranged outside the outer bearing support 7, and a reinforcing rib plate 12 is arranged between the annular supporting plate 11 and a central air shaft 13.

Wherein: the matching degree of the central discharging pipe bearing flange 2 and the spigot of the bearing and the central air shaft flange 10 is matched with the concentricity of the central discharging pipe 1. The central discharging pipe bearing flange 2 and the bearing and central air shaft flange 10 adopt an integral processing mode.

The outer side bearing support 7 and the bearing outer ring sliding bearing seat 8 are matched through a spigot and fastened through bolts, and have uniform concentricity in the circumferential direction.

The large bearing 3 matches the concentricity of the outer bearing 9.

The annular supporting plate 11 and the dryer cylinder are provided with inspection and repair holes.

Because the discharging box bearing flanges 6 on the two sides of the discharging box 5 are integrally processed and have good concentricity, a sealing cavity formed by the two parts has uniform clearance, and the sealing filler does not have eccentric wear.

The central tapping pipe 1 and the tapping box 5 have different thermal expansion values due to the temperature difference; the outer bearing 9 is a free end bearing, and a bearing outer ring sliding bearing seat 8 is adopted to ensure that the linear displacement caused by different expansion amounts is compensated.

Claims

1. The utility model provides a rotary dryer center ejection of compact seal structure, includes central discharging pipe (1), ejection of compact case (5) and central gas shaft (13), its characterized in that: a central discharging pipe bearing flange (2), a bearing and a central air shaft flange (10) are respectively arranged on the central discharging pipe (1); the inner side of the discharge box (5) is provided with a large bearing (3), and the large bearing (3) is fixed on the central discharge pipe (1) through an inner side bearing support (4) and the central discharge pipe bearing flange (2) respectively; a discharging box bearing flange (6) and an outer side bearing support (7) are respectively arranged on the outer side of the discharging box (5), and the outer side bearing support (7) is connected with a bearing outer ring sliding bearing seat (8); an outer side bearing (9) is arranged on the bearing outer ring sliding bearing seat (8), and the outer side bearing (9) is connected with the bearing and a central air shaft flange (10); an annular supporting plate (11) is arranged outside the outer side bearing support (7), and a reinforcing rib plate (12) is arranged between the annular supporting plate (11) and the central air shaft (13).

2. The rotary dryer central discharge seal structure of claim 1, wherein: the matching degree of the bearing flange (2) of the central discharging pipe and the spigot of the bearing and the central air shaft flange (10) is matched with the concentricity of the central discharging pipe (1).

3. The rotary dryer central discharge seal structure of claim 1, wherein: the outer side bearing support (7) and the bearing outer ring sliding bearing seat (8) are matched through a spigot and fastened through bolts, and have uniform concentricity in the circumferential direction.

4. The rotary dryer central discharge seal structure of claim 1, wherein: the large bearing (3) is matched with the outer bearing (9) in concentricity.

5. The rotary dryer central discharge seal structure of claim 1, wherein: and the annular supporting plate (11) and the dryer cylinder are provided with inspection and repair holes.