CN210125559U

CN210125559U - Coal picker with fine screening function

Info

Publication number: CN210125559U
Application number: CN201921017298.1U
Authority: CN
Inventors: 宋玉玮; 乔阳; 党文君; 党丽君; 张浩波
Original assignee: University of Jinan
Current assignee: University of Jinan
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-03-06
Anticipated expiration: 2029-07-02

Abstract

The coal separator with the fine screening function is used for screening coals with different sizes. The device comprises a rack, wherein the rack comprises a plurality of straight line sections arranged in parallel and an arc-shaped section arranged between two adjacent straight line sections; a belt conveyor is arranged on each straight line section of the rack; all be equipped with the screening unit at each segmental arc of frame, the screening unit includes a plurality of screening rollers that evenly set up along same circumference, drive screening roller pivoted actuating mechanism, and the radial setting of this circumference is followed to the screening roller, is equipped with the tray between every two adjacent screening rollers, constitutes the screening hole between tray and the screening roller, between two adjacent screening rollers, and the screening hole crescent on the direction of delivery screening unit along belt conveyor. The utility model discloses, can realize the screening to the coal cinder according to the size, and at first select likepowder or graininess coal during the screening, then select the fritter coal, then select medium size's coal cinder, massive coal at last, and then realize meticulous screening.

Description

Coal picker with fine screening function

Technical Field

The utility model belongs to the technical field of the coal dressing technique and specifically relates to a coal picker with meticulous screening function.

Background

After the coal is mined, the coal needs to be screened, and particularly, the coal dust generated by mining needs to be screened for utilization. Smaller size coals burn more fully and it is therefore important to screen the coal according to size and to use it separately for different purposes. Therefore, a coal separator with a fine screening function is urgently needed for screening coal.

Disclosure of Invention

An object of the utility model is to provide a coal picker with meticulous screening function for the realization is to the screening of unidimensional coal.

The utility model provides a technical scheme that its technical problem adopted is: the coal separator with the fine screening function comprises a frame and is characterized in that,

the rack comprises a plurality of straight line sections arranged in parallel and an arc-shaped section arranged between two adjacent straight line sections;

a belt conveyor is arranged on each straight line section of the rack;

all be equipped with the screening unit at each segmental arc of frame, the screening unit includes a plurality of screening rollers that evenly set up along same circumference, drive screening roller pivoted actuating mechanism, and the radial setting of this circumference is followed to the screening roller, is equipped with the tray between every two adjacent screening rollers, constitutes the screening hole between tray and the screening roller, between two adjacent screening rollers, and the screening hole crescent on the direction of delivery screening unit along belt conveyor.

Furthermore, the arc-shaped section is of a circular ring-shaped structure, and the central angle corresponding to the arc-shaped section is 180 degrees.

Furthermore, a plurality of bulges are fixed on the outer wall of the screening roller and arranged along the generatrix of the screening roller.

Further, the driving mechanism comprises a motor fixed on the rack, first gears fixed on the roll shafts of the screening rolls, and second gears arranged between every two adjacent first gears, the first gears are meshed with the second gears, and the motor drives one of the first gears to rotate.

Further, a motor mounting plate is arranged on the inner side of the arc-shaped section, the motor is fixed on the motor mounting plate, and a gear shaft of the second gear is rotatably mounted on the motor mounting plate.

Further, the cross-section of the protrusion is rectangular or tapered.

The utility model has the advantages that: the utility model provides a coal picker with meticulous screening function can realize the screening to the coal cinder according to the size, and at first select likepowder or graininess coal during the screening, then select the fritter coal, then select medium size's coal cinder, is the bold coal at last, and then realizes meticulous screening.

Drawings

Fig. 1 is a schematic top view of the present invention;

FIG. 2 is a top view of the frame;

FIG. 3 is a schematic diagram of a screening unit;

FIG. 4 is a schematic view of the drive of the screen roller;

FIG. 5 is one of the schematic views of a screen roller;

FIG. 6 is a second schematic view of a screen roller;

FIG. 7 is a schematic view of coal delivery;

in the figure: the automatic coal screening machine comprises a machine frame 1, a straight line segment 11, an arc segment 12, a motor mounting plate 13, a belt conveyor 2, a screening roller 3, a protrusion 31, a poking surface 32, a supporting block 4, a first gear 5, a second gear 51, a gear shaft 52, a motor 53 and a coal briquette 6.

Detailed Description

As shown in fig. 1 to 7, the present invention mainly includes a frame 1, a belt conveyor 2 and a screening unit, and the present invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the frame 1 is a basic component of the present invention, and the frame 1 is formed by welding and fixing section bars. The rack 1 comprises a plurality of straight line segments 11 and arc segments 12, wherein the straight line segments are linear, the arc segments are of circular ring structures, and the central angles of the arc segments are 180 degrees. The embodiment of the utility model provides an in, the straightway is equipped with four altogether, and the segmental arc has four, four straightway parallel arrangement, and four straightways link together through four segmental arcs. Therefore, a straight line section is arranged between every two adjacent arc sections, and the straight line section and the two arc sections form an S shape. And a motor mounting plate 13 is arranged on the inner side of the arc-shaped section and is used for mounting and fixing a motor of the screening unit.

The straightway of the rack is provided with a belt conveyor 2, the belt conveyor is used for conveying coal, the belt conveyor is arranged on the inner side of the rack, the coal on the belt conveyor at the first end of the arc section can fall into the arc section, and the coal on the arc section falls on the belt conveyor at the second end of the arc section.

As shown in fig. 3 and 4, the screening unit includes a plurality of screening rollers 3 rotatably mounted in the arc-shaped section, a first gear 5 fixed on the roller shaft of the screening roller, a second gear 51 arranged between every two adjacent first gears, and a motor 53 driving one of the first gears to rotate, the screening rollers are rotatably mounted in the arc-shaped section of the frame, and the plurality of screening rollers in each arc-shaped section are uniformly arranged along the same circumference, and the axes of the screening rollers are arranged along the radial direction of the circumference. The gear shaft 52 of the second gear is rotatably mounted on the motor mounting plate, the first gear is meshed with the second gear, so that the rotating directions of all the first gears are the same, and the rotating directions of the first gears enable the screening rollers to stir coal. In order to increase the friction between the screen roller and the coal and to move the coal in the arc-shaped segment, as shown in fig. 5 and 6, a strip-shaped protrusion 31 is fixed on the outer wall of the screen roller and is arranged along the generatrix direction of the screen roller. The cross section of the protrusion can be rectangular or conical, when the protrusion is conical, the contact surface of the toggle surface 32 at the large end of the protrusion and coal is larger, so that the coal is pushed more easily, and the phenomenon of coal slip in situ is avoided. The supporting block fixed on the frame is arranged between every two adjacent screening rollers, and the supporting block 4 is arranged between the two adjacent screening rollers, so that the size of a gap between the screening rollers can be reduced. The gaps between the screening rollers and the supporting blocks are screening holes. The supporting block is fixed on the inner wall of the frame, and the upper surface of the supporting block is smooth.

Each segmental arc all is equipped with the screening unit in the frame, realizes the screening to coal through the screening unit, and different screening units are used for screening the coal cinder of equidimension not. As shown in FIG. 7, during operation, the coal blocks move from left to right under the action of the belt conveyor, and the sizes of the coal blocks which can be screened by the four screening units are gradually increased along the conveying direction of the coal blocks. When the coal blocks are screened, the powdery and granular coal is screened by the first screening unit, the small coal blocks are screened by the second screening unit, the medium coal blocks are screened by the third screening unit, and the large coal blocks are screened by the fourth screening unit. The collecting boxes are arranged below each screening unit, and screened coal directly falls into the collecting boxes. Or a conveyer belt is arranged below the screening unit, and the screened coal is directly conveyed to a fixed place to be collected and stored.

After the coal briquette 6 is moved to the upper part of the screening roller by the belt conveyor, the coal smaller than the screening holes directly passes through the screening holes and falls down. And the coal blocks larger than the screening holes penetrate through the screening rollers which are arranged in sequence under the stirring of the screening rollers, then roll to the belt conveyor, and are conveyed to the screening unit of the next arc-shaped section by the belt conveyor.

Claims

1. The coal separator with the fine screening function comprises a frame and is characterized in that,

a belt conveyor is arranged on each straight line section of the rack;

2. The coal separator with fine screening function as claimed in claim 1, wherein the arc-shaped segment is of a circular ring structure, and the corresponding central angle of the arc-shaped segment is 180 degrees.

3. The coal separator with fine screening function as claimed in claim 1, wherein a plurality of protrusions are fixed on the outer wall of the screening roll, and the protrusions are arranged along the generatrix of the screening roll.

4. The coal separator with fine screening function as claimed in claim 1, wherein the driving mechanism includes a motor fixed to the frame, first gears fixed to the roll shafts of the screening rolls, second gears provided between each adjacent two of the first gears, the first gears are engaged with the second gears, and the motor drives one of the first gears to rotate.

5. The coal separator with fine screening function as claimed in claim 4, wherein a motor mounting plate is provided inside the arc-shaped section, the motor is fixed on the motor mounting plate, and the gear shaft of the second gear is rotatably mounted on the motor mounting plate.

6. The coal separator with fine screening function as claimed in claim 3, wherein the cross section of the protrusion is rectangular or conical.