CN216728108U - A screen tray structure for drum coal screening machine - Google Patents

Abstract

The utility model discloses a sieve tray structure for a drum coal screening machine, and discloses a sieve tray structure which enables a drum sieve tray to do irregular centrifugal motion in the process of rotating and screening coal through elastic connection between a rotating guide rail and the drum sieve tray and is convenient for coal blocks clamped in a first sieve pore and a second sieve pore to be separated from corresponding sieve pores. Its characterized in that is including rotating guide rail, spring, second sieve mesh, first sieve mesh, drum-type sieve tray and spiral deflector, drum-type sieve tray both ends correspond the one end that has put a set of spring respectively, and the other end of a set of spring is connected with the rotation guide rail, drum-type sieve tray divide into two parts, are first sieve coal district and second sieve coal district respectively, first sieve coal district lateral wall is opened along circumference equidistance has the first sieve mesh of multiunit, second sieve coal district lateral wall is opened along circumference equidistance has the multiunit second sieve mesh, and drum-type sieve tray is built internally to have the spiral deflector.

Description

A screen tray structure for drum coal screening machine

Technical Field

The utility model discloses a sieve tray structure for a rotary coal screening machine, relates to a sieve tray structure used on the rotary coal screening machine, and belongs to the technical field of coal separation equipment.

Background

Drum coal screening machine is often used for lump coal and buggy separation and coal washing in-process, be the component of coal washing machine tool, when utilizing drum coal screening machine to carry out the screening coal, generally carry the coal cinder in the drum sieve dish, along with the rotation of drum sieve dish, small coal cinder or buggy pass through the sieve mesh on the drum sieve dish and drop, bulky coal cinder then can be conveyed breaker department and carry out the breakage, because the shape of coal cinder is irregular, current drum coal screening machine is when using, the coal cinder blocks easily in the sieve mesh on the drum sieve dish, lead to the sieve mesh to be blockked up, thereby reduce the speed of screening coal.

Publication No. CN205165142U discloses a double-rotation type drum coal screening machine, which comprises a frame, a screen drum, a rotor and a driving mechanism, wherein the rotor is positioned in the screen drum and consists of a rotor shaft, a hub or a spoke rod and a drag head; the improvement is as follows: the drag head is fixedly installed at the outer circumferential end of the hub or the spoke, a gap is reserved between the drag head and the screen cylinder, the front part of the drag head, which is close to the screen cylinder, is of a plate-shaped structure which is parallel or close to the axis of the screen cylinder, the action surface of the front part of the drag head, which is close to the screen cylinder, on coal is in a T shape, and the rear part of the drag head is provided with a guide plate.

Disclosure of Invention

In order to improve the situation, the utility model provides a screen disc structure for a rotary coal screening machine, which enables a rotary screen disc to do irregular centrifugal motion in the rotary coal screening process through elastic connection between a rotary guide rail and the rotary screen disc, and facilitates the separation of coal blocks clamped in a first screen hole and a second screen hole from corresponding screen holes.

The utility model relates to a sieve tray structure for a rotary coal sieving machine, which is realized as follows: the utility model relates to a sieve tray structure for a rotary coal screening machine, which comprises a rotating guide rail, a spring, a second sieve pore, a first sieve pore, a drum-type sieve tray and a spiral guide plate,

it is characterized in that two ends of the drum-type screen tray are respectively provided with one end of a group of springs correspondingly, the other end of the group of springs is connected with the rotating guide rail,

preferably, the group of springs consists of a plurality of springs, the plurality of springs in the group are equidistantly arranged on the drum-type screen disc along the circumferential direction,

preferably, the spring is a stiff spring,

the drum-type sieve tray is divided into two parts, namely a first sieve coal area and a second sieve coal area, wherein the side wall of the first sieve coal area is provided with a plurality of groups of first sieve holes along the circumferential direction at equal intervals, the side wall of the second sieve coal area is provided with a plurality of groups of second sieve holes along the circumferential direction at equal intervals,

preferably, the first sieve holes are rectangular structures, the second sieve holes are rectangular structures, the width of the first sieve holes is smaller than that of the second sieve holes,

the inner wall of the drum-type sieve tray is provided with a spiral guide plate;

further, the spiral guide plates are replaced by arc guide plates, and a plurality of arc guide plates are spirally distributed from one end of the drum-type screen disc to the other end of the drum-type screen disc;

further, the spring both sides correspond respectively and have been put down annular limiting plate, lower annular limiting plate is connected with drum-type sieve dish, the spring both sides correspond respectively and have been put annular limiting plate on, go up annular limiting plate and rotating guide and be connected, lower annular limiting plate one side contacts with the spring, lower annular limiting plate another side contacts with last annular limiting plate.

Advantageous effects

First, can be convenient for the coal cinder of card in first sieve mesh and second sieve mesh break away from corresponding the sieve mesh in the sieve coal in-process.

Secondly, the structure is simple, convenient and practical.

Thirdly, the cost is low, and the popularization is convenient.

Drawings

FIG. 1 is a perspective view of a screen tray structure for a rotary coal screening machine according to the present invention;

FIG. 2 is a perspective view of a screen tray structure of an embodiment 2 of the present invention for a rotary screen coal machine;

fig. 3 is a schematic structural view of an embodiment 3 of a screen disc structure for a rotary screen coal machine according to the present invention.

In the attached drawings

Wherein the method comprises the following steps: the rotary guide rail 1, the spring 2, the second sieve mesh 3, the first sieve mesh 4, the drum-type sieve tray 5, the spiral guide plate 6, the arc guide plate 7, the lower annular limiting plate 8 and the upper annular limiting plate 9.

The specific implementation mode is as follows:

example 1:

the utility model relates to a sieve tray structure for a rotary coal screening machine, which is realized as follows: comprises a rotating guide rail 1, a spring 2, a second sieve pore 3, a first sieve pore 4, a drum-type sieve tray 5 and a spiral guide plate 6,

it is characterized in that two ends of the drum-type screen tray 5 are respectively provided with one end of a group of springs 2 correspondingly, the other end of the group of springs 2 is connected with the rotating guide rail 1,

preferably, the group of springs 2 consists of a plurality of springs 2, the plurality of springs 2 in the group are equidistantly arranged on the drum type sieve tray 5 along the circumferential direction,

preferably, the spring 2 is a stiff spring 2,

the drum-type sieve tray 5 is divided into two parts, namely a first sieve coal area and a second sieve coal area, wherein the side wall of the first sieve coal area is provided with a plurality of groups of first sieve holes 4 at equal intervals along the circumferential direction, the side wall of the second sieve coal area is provided with a plurality of groups of second sieve holes 3 at equal intervals along the circumferential direction,

preferably, the first sieve holes 4 are rectangular structures, the second sieve holes 3 are rectangular structures, the width of the first sieve holes 4 is smaller than that of the second sieve holes 3,

the inner wall of the drum-type sieve tray 5 is provided with a spiral guide plate 6;

preferably, the spiral guide plate 6 is made of high manganese steel (hadfield steel), the high manganese steel is alloy steel with manganese content of more than 10%, the high manganese steel can still have a small amount of carbide undissolved after solution treatment, when the amount of the carbide is less and meets the inspection standard, the carbide still can be used, the alloy steel is a common wear-resistant steel material, the manganese content is 10% -15%, the carbon content is higher, generally 0.90% -1.50%, and most of the carbide is more than 1.0%;

when the coal screening machine is used, when coal is required to be screened, the coal blocks are conveyed into the drum-type sieve tray 5, the coal screening machine is started, the rotating guide rail 1 rotates, and the drum-type sieve tray 5 is driven to roll through the spring 2, so that the coal blocks roll in the sieve tray, the coal blocks axially move in the drum-type sieve tray 5 through the spiral guide plate 6, the coal blocks are screened, the drum-type sieve tray 5 does irregular centrifugal motion due to uneven distribution of the coal blocks when the coal blocks roll in the drum-type sieve tray 5 and falling gravity in the rolling process of the coal blocks, so that the coal blocks clamped in the first sieve mesh 4 and the second sieve mesh 3 are separated from the corresponding sieve meshes under the action of centrifugal force, and the coal screening speed is prevented from being influenced due to the blockage of the first sieve mesh 4 and the second sieve mesh 3;

example 2:

this example differs from example 1 in that: the spiral guide plates 6 are replaced by arc guide plates 7, and the arc guide plates 7 are spirally distributed from one end of the drum-type screen disc 5 to the other end;

preferably, the spiral guide plate 6 is made of high manganese steel material;

when in use, the material can be saved, and the weight of the drum-type sieve tray 5 can be reduced;

example 3:

this example differs from example 1 in that: two sides of the spring 2 are respectively and correspondingly provided with a lower annular limiting plate 8, the lower annular limiting plate 8 is connected with the drum-type sieve tray 5, two sides of the spring 2 are respectively and correspondingly provided with an upper annular limiting plate 9, the upper annular limiting plate 9 is connected with the rotating guide rail 1, one surface of the lower annular limiting plate 8 is contacted with the spring 2, and the other surface of the lower annular limiting plate 8 is contacted with the upper annular limiting plate 9; when the device is used, the upper annular limiting plate 9 and the lower annular limiting plate 8 can limit the spring 2, so that the drum-type sieve tray 5 is more stable when used for screening coal briquettes;

the drum-type sieve tray 5 is matched with the first sieve holes 4 and the second sieve holes 3, so that coal blocks can be screened when the drum-type sieve tray 5 rolls;

the design that the width of the first sieve hole 4 is smaller than that of the second sieve hole 3 can enable the first coal screening area and the second coal screening area to meet different coal dressing requirements when the drum-type sieve tray 5 rotates to screen coal;

the design that the rotary guide rail 1 is matched with the spring 2 to drive the drum-type sieve tray 5 to roll can enable the drum-type sieve tray 5 to do irregular centrifugal motion, so that coal blocks clamped in the first sieve holes 4 and the second sieve holes 3 are separated from the corresponding sieve holes under the action of centrifugal force;

reach through the elastic connection between rotating guide rail 1 and the drum-type sieve tray 5 and make drum-type sieve tray 5 do anomalous centrifugal motion at the rotation screening coal in-process, the coal cinder of being convenient for the card in first sieve mesh 4 and second sieve mesh 3 breaks away from the purpose in corresponding the sieve mesh.

It should be noted that, unless otherwise specifically stated or limited, the terms "disposed on," "mounted," "connected" and "connected" are to be construed broadly and may include, for example, a fixed connection such as a crimped connection, a riveted connection, a pinned connection, an adhesive connection, a welded connection, a detachable connection such as a threaded connection, a snap connection, a hinged connection, an integral connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It should be further noted that, while the above specific embodiments are described for simplicity and clarity, only the differences from other embodiments are described, but those skilled in the art should understand that the above specific embodiments are independent technical solutions.

Claims (8)

1. The utility model provides a sieve tray structure for drum coal screening machine, is including rotating guide rail, spring, second sieve mesh, first sieve mesh, drum-type sieve tray and spiral deflector, its characterized in that, drum-type sieve tray both ends correspond the one end of having put a set of spring respectively, and the other end of a set of spring is connected with the rotation guide rail, drum-type sieve tray divide into two parts, are first sieve coal district and second sieve coal district respectively, first sieve coal district lateral wall is opened along circumference equidistance has the first sieve mesh of multiunit, second sieve coal district lateral wall is opened along circumference equidistance has multiunit second sieve mesh, and the spiral deflector has been put to drum-type sieve tray inner wall.

2. The screen tray structure for the rotary screen coal machine according to claim 1, wherein the spiral guide plates are replaced by arc guide plates, and a plurality of arc guide plates are spirally distributed from one end of the rotary screen tray to the other end of the rotary screen tray.

3. The sieve tray structure for the coal drum screening machine according to claim 1, wherein the two sides of the spring are respectively and correspondingly provided with a lower annular limiting plate, the lower annular limiting plate is connected with the drum-type sieve tray, the two sides of the spring are respectively and correspondingly provided with an upper annular limiting plate, the upper annular limiting plate is connected with the rotating guide rail, one surface of the lower annular limiting plate is in contact with the spring, and the other surface of the lower annular limiting plate is in contact with the upper annular limiting plate.

4. The screen tray structure for the rotary screen coal machine according to claim 1, wherein one group of the springs is composed of a plurality of springs, and the plurality of springs in one group are circumferentially and equidistantly arranged on the rotary screen tray.

5. The screen tray structure for a rotary screen coal machine according to claim 4, wherein the spring is a rigid spring.

6. The screen tray structure for a rotary screen coal machine according to claim 1, wherein the first screen openings are rectangular in configuration.

7. The screen tray structure for a rotary screen coal machine according to claim 1, wherein the second screen openings are rectangular in configuration.

8. The screen tray structure for a rotary screen coal machine according to claim 6, wherein the width of the first screen hole is smaller than the width of the second screen hole.

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