CN117258982A

CN117258982A - Coal screening processingequipment

Info

Publication number: CN117258982A
Application number: CN202311239607.0A
Authority: CN
Inventors: 阳伟; 谭节庆; 牟文
Original assignee: Sichuan Provincial Geological Survey And Research Institute; Sichuan Energy Geological Survey And Research Institute
Current assignee: Sichuan Provincial Geological Survey And Research Institute; Sichuan Energy Geological Survey And Research Institute
Priority date: 2023-09-25
Filing date: 2023-09-25
Publication date: 2023-12-22

Abstract

The invention discloses a coal screening processing device, which comprises: the device comprises a collecting bottom plate, two adjusting side plates, a first screening device, a crushing device, a second screening device, a guiding and limiting device, a vibration feeding port, a material collecting box and a material discharging port, wherein the two adjusting side plates are symmetrically distributed and fixed on the collecting bottom plate; the first screening device, the crushing device and the second screening device are sequentially arranged on the adjusting side plate in a sliding manner; the guiding and limiting device is connected with the first screening device, the crushing device and the second screening device; the vibration feed inlet is arranged at one side of the first screening device; the two material collecting boxes are respectively positioned at the side parts of the first screening device and the second screening device; the discharge port is arranged at the lower part of the second screening device. Compared with the prior art, the method has the advantages that coal is completely separated into two parts with too small particles and particle sizes meeting the standard through multiple screening, large-particle coal is not required to be treated independently, the production cost is reduced, and the working efficiency is improved.

Description

Coal screening processingequipment

Technical Field

The invention relates to the technical field of coal screening processing, in particular to a coal screening processing device.

Background

Coal is known as black gold, industrial food, which is one of main energy sources used in human world in eighteen centuries, the supply of coal is also related to the stability of development of the industry of China and even the aspects of the whole society, the supply safety problem of coal is also the most important ring in the energy safety of China, the shapes and the sizes of mined coal are different, the crushed coal particles are required to be crushed for facilitating the subsequent processing and production, the crushed coal particles have great difference, when the coal particles are sieved, small particles can pass through sieve holes on a sieve plate, and large particles cannot pass through the sieve holes and are accumulated on the sieve plate, the accumulated coal is easy to block the sieve holes and needs to be collected again, and when the large particle coal is transferred for secondary treatment, the production cost is increased, and the efficiency of the sieving treatment is also influenced. Therefore, it is necessary to provide a coal screening processing device to solve the problems set forth in the background art.

Disclosure of Invention

In order to achieve the above purpose, the present invention provides the following technical solutions: a coal screening processing device comprising:

a collection floor carrying the screening process apparatus;

the two adjusting side plates are symmetrically distributed and fixed on the collecting bottom plate;

the first screening device is arranged at the upper part of the adjusting side plate in a sliding way;

the crushing device is arranged in the middle of the adjusting side plate in a sliding manner and is positioned below the first screening device;

the second screening device is arranged at the lower part of the adjusting side plate in a sliding manner and is arranged in parallel with the first screening device;

the guiding and limiting device is connected with the first screening device, the crushing device and the second screening device;

the vibration feed port is fixed on the adjusting side plate and is arranged at one side of the first screening device;

the material collecting box is provided with two material collecting boxes which are respectively positioned at the side parts of the first screening device and the second screening device;

the discharging hole is arranged at the lower part of the second screening device and is opposite to the material collecting box.

Further, preferably, the adjusting side plate is provided with a first chute, a second chute and a third chute which are parallel to each other, and the outside of the chute is provided with a corresponding chain wheel structure. That is to say, the first screening device is arranged in the first chute and is driven by the external chain wheel structure to screen coal once; the crushing device is arranged in the second chute and is driven by an external chain wheel structure to crush the large-particle coal which is not screened out; the second screening device is arranged in the third chute, and secondary screening work is carried out on the coal crushed by the crushing device under the drive of the external chain wheel structure.

Further, as the preference, first screening plant is including sliding first transport roller, first primary roller, first secondary roller and the first terminal roller that sets up in first spout, first transport roller is close to vibration feed inlet, and each roller of other sets gradually, and at roller both ends fixedly connected with rolling bearing, rolling bearing sets up in the outside of adjusting the curb plate, and both sides are equipped with the locating piece that is connected with the regulation curb plate. After the intervals are adjusted, the rollers in the first screening device are fixed through positioning blocks, then under the action of a rotating bearing, the rollers are driven by a chain wheel structure to rotate in the same direction, coal entering at a vibration feeding hole is transferred and screened, and when the coal passes between a first conveying roller and a first primary roller, too small coal particles fall down and are collected by a collecting box; when passing through the first primary roller and the first secondary roller, coal with standard particle size falls down and is discharged from a discharge hole after passing through the second screening device; when passing between the first secondary roller and the first terminal roller, the coal with oversized particles falls down and enters the crushing device to be crushed, and because the coal is primarily crushed before feeding, the space between the first secondary roller and the first terminal roller ensures that all the large-particle coal falls down, and then the crushing device is used for secondary crushing so as to screen again.

Further, preferably, the crushing device comprises a main crushing shaft and a secondary crushing shaft which are slidably arranged on the second chute, the secondary crushing shaft and the first end point roller move synchronously, and two ends of the main crushing shaft and the secondary crushing shaft are provided with structures identical to two ends of each roller in the first screening device. The distance between the main crushing shaft and the secondary crushing shaft is the same as the standard particle size of the required coal, so that after secondary crushing, the batch of coal can be completely screened, after the positions of the main crushing shaft and the secondary crushing shaft are adjusted, the main crushing shaft and the secondary crushing shaft are fixed by a positioning block, and then under the action of a rotating bearing, the main crushing shaft and the secondary crushing shaft are driven by a chain wheel structure to rotate relatively, so that large-particle coal blocks are crushed secondarily.

Further, preferably, the second screening device includes a second conveying roller, a second primary roller and a second end roller which are slidably disposed in the third chute, the second conveying roller and the second primary roller are located at the upper portion of the material collecting box, the second end roller is adjacent to the material outlet, and two ends of each roller in the second screening device are provided with structures identical to two ends of each roller in the first screening device. When the second screening device is regulated, the second conveying roller is moved to the position close to the center point of the main crushing shaft and the center point of the secondary crushing shaft, when coal falls down after being crushed, the second conveying roller is just driven to move towards the second primary roller, and coal particles which are too small after being crushed directly pass through the space between the second conveying roller and the second primary roller and fall into the material collecting box, and coal meeting the standard particle size falls down from the space between the second primary roller and the second terminal roller and is discharged from the material outlet.

Further, preferably, the guide and limit device includes:

the rotary guide assembly is connected with the first secondary roller and the main crushing shaft;

and the fixed limiting assembly is connected with the first end point rolling shaft, the secondary crushing shaft and the second conveying rolling shaft. Under the combined action of the rotation guide assembly and the fixed limiting assembly, when large-particle coal falls down from between the first secondary roller and the first terminal roller, the large-particle coal can completely fall into the crushing device, and after crushing, the crushed coal is guided onto the second conveying roller by the fixed limiting assembly, and the secondary screening work is performed.

Further, preferably, the rotation guide assembly includes:

the rotary connecting surface is rotationally arranged at two ends of the first secondary rolling shaft and the main crushing shaft and positioned at the inner side of the adjusting side plate;

the guide panel is connected with the rotary connecting surface on the first secondary roller and the main crushing shaft and is of a telescopic structure. When the inclination angle of the guide panel is increased in the moving process of the first secondary roller and the main crushing shaft, the guide panel is lengthened while the rotary connecting surface rotates; when the inclination angle of the guide panel becomes small, the guide panel contracts while the rotation connection surface rotates.

Further, preferably, the fixed limiting assembly includes:

the fixed connecting surface is fixed at two ends of the first end point rolling shaft, the secondary crushing shaft and the second conveying rolling shaft and is positioned at the inner side of the adjusting side plate;

the first limiting panel is connected with the fixed connecting surface on the first end roller and the secondary crushing shaft;

and the second limiting panel is connected with the fixed connecting surface on the secondary crushing shaft and the second conveying roller. Under the action of the fixed connecting surface and the limiting panel, the first end point rolling shaft, the secondary crushing shaft and the second conveying rolling shaft are in a synchronous moving state, namely, after the position adjustment of each rolling shaft in the first screening device is completed, the first end point rolling shaft, the secondary crushing shaft and the second conveying rolling shaft are kept fixed, wherein the secondary crushing shaft and the second conveying rolling shaft provide position references for each rolling shaft in the main crushing shaft and the second screening device.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, through the arrangement of the multi-stage screening device and the crushing device, after primarily crushed coal is screened, the coals with excessively small particles and particle sizes meeting the standard are respectively picked out, then the large-particle coals are crushed, the crushing device is arranged according to the required particle sizes of the coals, and after the crushing treatment, the batch of coals are screened again, so that the complete sorting of the batch of coals is achieved, the large-particle coals do not need to be treated again independently after screening, the production cost is reduced, and the screening efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a coal screening processing plant;

FIG. 2 is a side view of a coal screening processing plant;

FIG. 3 is a schematic view of the internal structure of a coal screening processing device;

FIG. 4 is a schematic view of a rotary guide assembly of a coal screening processing device;

FIG. 5 is a schematic view of a fixed limiting assembly in a coal screening processing device;

in the figure: 1. a collection floor; 2. adjusting the side plates; 3. a first screening device; 4. a crushing device; 5. a second screening device; 6. a guide limit device; 7. vibrating the feed inlet; 8. a material collecting box; 9. a discharge port; 21. a first chute; 22. a second chute; 23. a third chute; 31. a first conveying roller; 32. a first primary roller; 33. a first secondary roller; 34. a first end roller; 35. a rotating bearing; 36. a positioning block; 41. a main crushing shaft; 42. a secondary crushing shaft; 51. a second conveying roller; 52. a second primary roller; 53. a second end roller; 61. a rotation guide assembly; 62. fixing a limiting assembly; 611. rotating the connecting surface; 612. a guide panel; 621. fixing the connecting surface; 622. a first limit panel; 623. and the second limiting panel.

Detailed Description

Referring to fig. 1 to 5, in an embodiment of the present invention, a coal screening processing apparatus includes:

a collecting bottom plate 1 for carrying the screening processing device;

two adjusting side plates 2 are symmetrically distributed and fixed on the collecting bottom plate 1;

a first screening device 3 slidably disposed at an upper portion of the adjustment side plate 2;

the crushing device 4 is arranged in the middle of the adjusting side plate 2 in a sliding manner and is positioned below the first screening device 3;

the second screening device 5 is arranged at the lower part of the adjusting side plate 2 in a sliding manner and is arranged in parallel with the first screening device 3;

a guiding and limiting device 6 connected with the first screening device 3, the crushing device 4 and the second screening device 5;

the vibration feed port 7 is fixed on the adjusting side plate 2 and is arranged on one side of the first screening device 3;

the material collecting box 8 is provided with two material collecting boxes which are respectively positioned at the side parts of the first screening device 3 and the second screening device 5;

the discharging hole 9 is arranged at the lower part of the second screening device 5 and is opposite to the material collecting box 8.

In this embodiment, the adjusting side plate 2 is provided with a first chute 21, a second chute 22 and a third chute 23 which are parallel to each other, and the outside of the chutes is provided with a corresponding sprocket structure. That is to say, the first screening device 3 is arranged in the first chute 21, and is driven by an external chain wheel structure to screen coal once; the crushing device 4 is arranged in the second chute 22, and is driven by an external chain wheel structure to crush the large-particle coal which is not screened out; the second screening device 5 is arranged in the third chute 23, and is driven by an external chain wheel structure to conduct secondary screening work on the coal crushed by the crushing device 4.

In this embodiment, the first screening device 3 includes a first conveying roller 31, a first primary roller 32, a first secondary roller 33 and a first end roller 34 slidably disposed in the first chute 21, where the first conveying roller 31 is adjacent to the vibration feeding port 7, and the other rollers are sequentially disposed, and two ends of the rollers are fixedly connected with a rotating bearing 35, the rotating bearing 35 is disposed on the outer side of the adjusting side plate 2, and two sides of the rotating bearing are provided with positioning blocks 36 connected with the adjusting side plate 2. After the intervals are adjusted by sequentially moving the rollers in the first screening device 3, fixing the rollers through the positioning blocks 36, driving the rollers to rotate in the same direction by a sprocket structure under the action of the rotating bearing 35, transferring and screening coal entering the vibration feeding port 7, and collecting too small coal particles by the collecting box 8 when the coal particles pass through the space between the first conveying roller 31 and the first primary roller 32; when passing through the first primary roller 32 and the first secondary roller 33, coal with standard particle size falls down and is discharged from the discharge hole 9 after passing through the second screening device 5; when passing between the first secondary roller 33 and the first terminal roller 34, the oversized coal falls down and enters the crushing device 4 for crushing, and the space between the first secondary roller 33 and the first terminal roller 34 should ensure that all the oversized coal falls down due to preliminary crushing before feeding, so that the oversized coal is crushed again by the crushing device 4 for screening.

In this embodiment, the crushing device 4 includes a main crushing shaft 41 and a secondary crushing shaft 42 slidably disposed on the second chute 22, and the secondary crushing shaft 42 moves synchronously with the first finishing roller 34, and two ends of the main crushing shaft 41 and the secondary crushing shaft 42 are provided with the same structure as two ends of each roller in the first screening device 3. The distance between the main crushing shaft 41 and the secondary crushing shaft 42 is the same as the standard particle size of the required coal, so that after secondary crushing, the batch of coal can be completely screened, after the positions of the main crushing shaft 41 and the secondary crushing shaft 42 are adjusted, the main crushing shaft 41 and the secondary crushing shaft 42 are fixed by the positioning block 36, and then the main crushing shaft 41 and the secondary crushing shaft 42 are driven to rotate relatively by a chain wheel structure under the action of the rotating bearing 35, so that large-particle coal blocks are secondarily crushed.

In this embodiment, the second screening device 5 includes a second conveying roller 51, a second primary roller 52 and a second finishing roller 53 slidably disposed in the third chute 23, where the second conveying roller 51 and the second primary roller 52 are located at an upper portion of the collecting box 8, the second finishing roller 53 is adjacent to the discharge hole 9, and two ends of each roller in the second screening device 5 are provided with the same structure as two ends of each roller in the first screening device 3. When the second screening device 5 is regulated, the second conveying roller 51 is moved to the position below the center point of the main crushing shaft 41 and the secondary crushing shaft 42, when coal falls through crushing, the coal is just driven by the second conveying roller 51 to move towards the second primary roller 52, and the crushed coal particles directly pass through the space between the second conveying roller 51 and the second primary roller 52 and fall into the material collecting box 8, and the coal meeting the standard particle size falls from the space between the second primary roller 52 and the second terminal roller 53 and is discharged from the material outlet 9.

In this embodiment, the guiding and limiting device 6 includes:

a rotation guide assembly 61 connecting the first secondary roller 33 and the main crushing shaft 41;

a fixed stop assembly 62 connects the first finishing roller 34, the secondary crushing shaft 42 and the second conveying roller 51. Under the combined action of the rotation guide assembly 61 and the fixed limit assembly 62, when large-particle coal falls from between the first secondary roller 33 and the first end roller 34, the large-particle coal can fall into the crushing device 4 completely, and after crushing, the crushed coal is guided onto the second conveying roller 51 by the fixed limit assembly 62 to perform screening work again.

In this embodiment, the rotation guide assembly 61 includes:

a rotation connection surface 611 rotatably provided at both ends of the first secondary roller 33 and the main crushing shaft 41 at the inner side of the adjustment side plate 2;

a guiding panel 612, which connects the first secondary roller 33 and the rotation connection surface 611 on the main crushing shaft 41, and the guiding panel 612 is of a telescopic structure. When the inclination angle of the guide panel 612 becomes large during the movement of the first secondary roller 33 and the main crushing shaft 41, the guide panel 612 is elongated while the rotation connection surface 611 is rotated; when the inclination angle of the guide panel 612 becomes small, the guide panel 612 contracts while the rotation connection surface 611 rotates.

In this embodiment, the fixed limiting assembly 62 includes:

a fixed connection surface 621 fixed to both ends of the first finishing roller 34, the secondary crushing shaft 42 and the second conveying roller 51, located inside the adjustment side plate 2;

a first limit panel 622 connecting the first end roller 34 and a fixed connection surface 621 on the secondary crushing shaft 42;

a second limit plate 623 for connecting the secondary crushing shaft 42 to the fixed connection surface 621 on the second conveying roller 51. The first end roller 34, the secondary crushing shaft 42 and the second conveying roller 51 are brought into a synchronized movement by the stationary connection surface 621 and the limit panel, i.e. after the adjustment of the position of the respective rollers in the first screening device 3 has been completed, the first end roller 34, the secondary crushing shaft 42 and the second conveying roller 51 remain stationary, wherein the secondary crushing shaft 42 and the second conveying roller 51 provide a position reference for the respective rollers in the primary crushing shaft 41 and the second screening device 5.

In practice, the standard size of the coal to be screened is determined first, then the first screening device 3, the crushing device 4 and the second screening device 5 are adjusted so that the spacing between the first primary roller 32 and the first secondary roller 33, the spacing between the primary crushing shaft 41 and the secondary crushing shaft 42, the spacing between the second primary roller 52 and the second final roller 53 are the same as the standard size of the coal, the first screening device 3, the crushing device 4 and the second screening device 5 are fixed by the positioning blocks 36, then the chain wheel structure distribution is used for connecting the first screening device 3, the crushing device 4 and the second screening device 5, then the primary crushed coal is poured from the vibration feed port 7, the first screening device 3, the crushing device 4 and the second screening device 5 are sequentially operated, in the first screening device 3, too small coal particles fall down when passing between the first conveying roller 31 and the first primary roller 32, the coal with standard particle size falls down when passing through the first primary roller 32 and the first secondary roller 33, falls down between the second primary roller 52 and the second terminal roller 53 in the second screening device 5, is discharged from the discharge hole 9, and the coal with oversized particles falls down when passing through the first secondary roller 33 and the first terminal roller 34, enters the crushing device 4 under the action of the guide panel 612 and the first limit panel 622, secondarily crushes the large-particle coal blocks under the relative rotation of the main crushing shaft 41 and the secondary crushing shaft 42, then enters the second screening device 5 under the guide of the second limit panel 623, the coal with oversized particles generated by secondary crushing falls down between the second conveying roller 51 and the second primary roller 52 under the continuous rotation of the second conveying roller 51, is collected by the material collecting box 8, coal conforming to the standard particle size is moved to fall between the second primary roller 52 and the second final roller 53 and discharged from the discharge port 9, completing the complete sorting of the batch of coal.

The foregoing description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims

1. The utility model provides a coal screening processingequipment which characterized in that: comprising the following steps:

a collecting bottom plate (1) carrying the screening processing device;

two adjusting side plates (2) are symmetrically distributed and fixed on the collecting bottom plate (1);

the first screening device (3) is arranged at the upper part of the adjusting side plate (2) in a sliding manner;

the crushing device (4) is arranged in the middle of the adjusting side plate (2) in a sliding manner and is positioned below the first screening device (3);

the second screening device (5) is arranged at the lower part of the adjusting side plate (2) in a sliding manner and is arranged in parallel with the first screening device (3);

the guiding and limiting device (6) is connected with the first screening device (3), the crushing device (4) and the second screening device (5);

a vibration feed inlet (7) which is fixed on the adjusting side plate (2) and is arranged at one side of the first screening device (3);

the two material collecting boxes (8) are respectively positioned at the side parts of the first screening device (3) and the second screening device (5);

the discharging hole (9) is arranged at the lower part of the second screening device (5) and is opposite to the material collecting box (8).

2. The coal screening processing device of claim 1, wherein: the adjusting side plate (2) is provided with a first chute (21), a second chute (22) and a third chute (23) which are parallel to each other, and the outer side of the chute is provided with a corresponding chain wheel structure.

3. The coal screening processing device of claim 1, wherein: the first screening device (3) comprises a first conveying roller (31), a first primary roller (32), a first secondary roller (33) and a first end roller (34) which are arranged in a first sliding groove (21) in a sliding manner, the first conveying roller (31) is close to the vibration feeding port (7), other rollers are sequentially arranged, rotating bearings (35) are fixedly connected to two ends of each roller, the rotating bearings (35) are arranged on the outer side of the adjusting side plate (2), and positioning blocks (36) connected with the adjusting side plate (2) are arranged on two sides of the rotating bearings.

4. The coal screening processing device of claim 1, wherein: the crushing device (4) comprises a main crushing shaft (41) and a secondary crushing shaft (42) which are arranged on the second chute (22) in a sliding manner, the secondary crushing shaft (42) and the first end point rolling shaft (34) move synchronously, and two ends of the main crushing shaft (41) and the secondary crushing shaft (42) are provided with structures identical to those of two ends of each rolling shaft in the first screening device (3).

5. The coal screening processing device of claim 1, wherein: the second screening device (5) comprises a second conveying roller (51), a second primary roller (52) and a second end roller (53) which are arranged in the third chute (23) in a sliding manner, the second conveying roller (51) and the second primary roller (52) are located on the upper portion of the material collecting box (8), the second end roller (53) is adjacent to the material outlet (9), and two ends of each roller in the second screening device (5) are provided with structures identical to two ends of each roller in the first screening device (3).

6. The coal screening processing device of claim 1, wherein: the guiding and limiting device (6) comprises:

a rotation guide assembly (61) connecting the first secondary roller (33) and the main crushing shaft (41);

and the fixed limiting assembly (62) is connected with the first end roller (34), the secondary crushing shaft (42) and the second conveying roller (51).

7. The coal screening processing device of claim 6, wherein: the rotation guide assembly (61) includes:

a rotary connecting surface (611) rotatably arranged at two ends of the first secondary roller (33) and the main crushing shaft (41) and positioned at the inner side of the adjusting side plate (2);

and the guide panel (612) is connected with the rotary connecting surface (611) on the first secondary roller (33) and the main crushing shaft (41), and the guide panel (612) is of a telescopic structure.

8. The coal screening processing device of claim 6, wherein: the fixed stop assembly (62) includes:

a fixed connection surface (621) fixed at both ends of the first end roller (34), the secondary crushing shaft (42) and the second conveying roller (51) and positioned at the inner side of the adjusting side plate (2);

a first limit panel (622) connected to a fixed connection surface (621) on the first end roller (34) and the secondary crushing shaft (42);

and a second limit panel (623) for connecting the secondary crushing shaft (42) and a fixed connection surface (621) on the second conveying roller (51).