CN213147350U

CN213147350U - Flash dryer rotating spindle fixing structure

Info

Publication number: CN213147350U
Application number: CN202021788092.1U
Authority: CN
Inventors: 周海; 高阳
Original assignee: Liaoning Shougang Boron Iron Co ltd
Current assignee: Liaoning Shougang Boron Iron Co ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-05-07
Anticipated expiration: 2030-08-25

Abstract

The utility model discloses a rotatory main shaft fixed knot of flash dryer constructs, its characterized in that: both ends of the main shaft are fixed on the upper bearing and the lower bearing; the upper bearing is fixed on the upper support plate, and the lower bearing is fixed on the lower support plate; the upper end of the main shaft penetrates through the plane thrust needle roller bearing and is fixed with the boss, and the lower end of the boss is abutted against the upper end of the plane thrust needle roller bearing; the lower end of the plane thrust needle roller bearing is abutted against the bottom of the inner side of the shell; the upper part of the boss is fixed with the objective table; a stirring shaft is arranged on the objective table, and blades are arranged on the stirring shaft; the lower extreme of main shaft is fixed with from the driving wheel, passes through the belt with the action wheel from the driving wheel and is connected, and the belt passes through the speed reducer with the motor output shaft and is connected. The utility model has the advantages that: both ends of the main shaft are fixed with the bearings, so that the defects of a cantilever structure in the prior art are overcome, and the rotation concentricity of the main shaft is ensured; the main shaft is fixed with the shell in the axial direction through the boss and the plane thrust needle roller bearing, and the axial precision when external force impact is received is guaranteed.

Description

Flash dryer rotating spindle fixing structure

Technical Field

The utility model relates to a mine processing machinery field specifically is a rotatory main shaft fixed knot of desiccator constructs.

Background

The flash dryer charging host, the primary cyclone flow divider, the secondary cyclone flow divider and the dust remover are combined into a drying and dust removing system; the principle is as follows: the hot air enters the stirring, crushing and drying chamber from the bottom of the dryer at a proper spouting speed under the action of the draught fan, and produces strong shearing, blowing, floating and rotating actions on the materials, so that the materials are micronized by centrifugation, shearing, collision and friction, and the mass and heat transfer is enhanced. At the bottom of the dryer, the larger and wetter particle mass is mechanically broken down by the action of the agitator, the moisture content is lower, and the particles with smaller particle size are entrained by the rotating airflow and rise, and are further dried in the rising process. Because the gas phase and the solid phase flow in a rotating way, the inertia of the solid phase is larger than that of the gas phase, the relative speed of the two phases of the solid phase and the gas phase is higher, the mass transfer and the heat transfer between the two phases are enhanced, and the drying speed is higher. The main shaft of the existing feeder is easy to generate abrasion and deviation due to bearing the weight of materials and the torque of the stirring shaft, so that the main shaft is not concentric and damaged in rotation.

Disclosure of Invention

In order to solve the technical problem, the utility model aims at providing a main shaft fixed knot constructs, concrete technical scheme as follows:

a rotating main shaft fixing structure of a flash dryer is characterized in that two ends of a main shaft are fixed on an upper bearing and a lower bearing; the upper bearing is fixed on the upper support plate, and the lower bearing is fixed on the lower support plate; the upper end of the main shaft penetrates through the plane thrust needle roller bearing and is fixed with the boss, and the lower end of the boss is abutted against the upper end of the plane thrust needle roller bearing; the lower end of the plane thrust needle roller bearing is abutted against the bottom of the inner side of the shell; the upper part of the boss is fixed with the objective table; a stirring shaft is arranged on the objective table, and blades are arranged on the stirring shaft; the lower extreme of main shaft is fixed with from the driving wheel, passes through the belt with the action wheel from the driving wheel and is connected, and the belt passes through the speed reducer with the motor output shaft and is connected.

The objective table is fixed at the lower end of the shell, and a second plane thrust needle roller bearing is arranged between the objective table and the boss; the spindle passes through the stage.

The main shaft penetrates through the object stage to form a stirring shaft.

The utility model has the advantages that: both ends of the main shaft are fixed with the bearings, so that the defects of a cantilever structure in the prior art are overcome, and the rotation concentricity of the main shaft is ensured; the main shaft is fixed with the shell in the axial direction through the boss and the plane thrust needle roller bearing, and the axial precision when external force impact is received is guaranteed.

Drawings

FIG. 1 is a schematic view of the overall structure of a flash dryer;

fig. 2 is an enlarged schematic view of the spindle fixing structure.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings, as shown in the figures, an upper support plate 1 and a lower support plate 12 are fixed on a frame 22, and a shell 2 is fixed on the frame; the side surface of the lower part of the shell is provided with a hot air inlet 3, the upper part of the side surface of the shell is provided with a feed inlet 4, and the feed inlet 4 is provided with a valve 5; the uppermost part of the shell is a discharge hole 6, the lower part of the shell is provided with an object stage 16, the object stage is provided with a stirring shaft 14, and the stirring shaft is provided with blades 15; the lower part of the objective table is fixed with the boss 8; the boss 8 is fixed with the main shaft 7,

both ends of the main shaft 7 are fixed on an upper bearing 10 and a lower bearing 11; the upper bearing 10 is fixed on the upper support plate 1, and the lower bearing 11 is fixed on the lower support plate 12;

the upper end of the main shaft 7 penetrates through the plane thrust needle roller bearing 9 and is fixed with the boss 8, and the lower end of the boss 8 is abutted against the upper end of the plane thrust needle roller bearing 9; the lower end of the plane thrust needle roller bearing 9 is abutted against the bottom of the inner side of the shell; the outer side of the plane thrust needle roller bearing is abutted with the inner diameter of the fixed sleeve 13; the fixed sleeve 13 is fixed on the frame through screws;

in the connecting structure, the lug boss drives the objective table to rotate, and further drives the stirring shaft to rotate;

the other structure is that the object stage is fixed on the shell and does not rotate, and the main shaft penetrates through the object stage to form a stirring shaft; at this time, the boss rotates and the stage does not rotate, so that a second flat thrust needle bearing 23 is arranged between the stage and the boss;

the lower end of the main shaft is fixed with a driven wheel 17, the driven wheel 17 is connected with a driving wheel 19 through a belt 18, and the belt 18 is connected with an output shaft of a motor 20 through a speed reducer.

Claims

1. The utility model provides a flash dryer rotating spindle fixed knot constructs which characterized in that: both ends of the main shaft are fixed on the upper bearing and the lower bearing; the upper bearing is fixed on the upper support plate, and the lower bearing is fixed on the lower support plate; the upper end of the main shaft penetrates through the plane thrust needle roller bearing and is fixed with the boss, and the lower end of the boss is abutted against the upper end of the plane thrust needle roller bearing; the lower end of the plane thrust needle roller bearing is abutted against the bottom of the inner side of the shell; the upper part of the boss is fixed with the objective table; a stirring shaft is arranged on the objective table, and blades are arranged on the stirring shaft; the lower extreme of main shaft is fixed with from the driving wheel, passes through the belt with the action wheel from the driving wheel and is connected, and the belt passes through the speed reducer with the motor output shaft and is connected.

2. The flash dryer rotating spindle fixing structure of claim 1, wherein: the objective table is fixed at the lower end of the shell, and a second plane thrust needle roller bearing is arranged between the objective table and the boss; the spindle passes through the stage.

3. The flash dryer rotary spindle fixing structure of claim 2, wherein: the main shaft penetrates through the object stage to form a stirring shaft.