CN113042355A

CN113042355A - Mine clean coal fine screening equipment

Info

Publication number: CN113042355A
Application number: CN202110108039.5A
Authority: CN
Inventors: 彭伟平
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2021-06-29

Abstract

The invention provides mine clean coal fine screening equipment, which comprises an equipment main body, wherein collecting boxes are fixedly connected to two sides of the equipment main body, a collecting bin is fixedly connected to the inside of the collecting box, a driving box is fixedly connected to the bottom of the equipment main body, a second motor driving group is fixedly arranged inside the driving box, a second-stage screening barrel is fixedly connected to the output end of the second motor driving group, grading nets are fixedly connected to two sides of the second-stage screening barrel, a feeding pipe is fixedly connected to one side of the top of the equipment main body, and a first motor driving group is fixedly arranged on the top of the equipment main body. Under the effect of centrifugal force, the heavier caking is concentrated to the inside of handling bucket through sinking the bushing, conveniently carries out the processing of caking.

Description

Mine clean coal fine screening equipment

Technical Field

The invention relates to the technical field of fine screening of clean coal, in particular to fine screening equipment for mine clean coal.

Background

Along with the continuous improvement of the washing proportion of the fine coal, the large-scale coal preparation equipment, and the improvement of the lower separation limit of gravity separation, an effective separation granularity gap exists between gravity separation and flotation, a fine screen for classifying the fine coal is generated for improving the yield and the quality of the fine coal, the fine screen generally refers to a mesh screen with the aperture smaller than 25mm, and the fine screen has the advantages of large treatment capacity, high screening precision and the like, is widely applied to the aspects of iron extraction and silicon reduction, product granularity control, ore grinding classification and the like of a dressing plant, and brings huge production efficiency and economic benefit to the dressing plant.

The existing clean coal is firstly subjected to dry separation or wet separation, and then is subjected to high-quality products obtained through separation, different clean coals are different according to use purposes, the particles of the clean coal are still required to be distinguished according to different particle sizes, and in the process of the clean coal treatment and separation, coal briquette clots are inevitably accumulated into a whole due to different operations of the clean coal, along with preliminary screening, the coal briquettes of the clots are difficult to disperse in equipment, so that the coal briquette particle screening is inaccurate, the coal briquettes are easy to be divided into coarse classification of particle sizes, the accuracy of the coal briquette separation is reduced, meanwhile, different clean coals are treated and separated in the process, the screening efficiency is low, and the separation cannot be quickly carried out according to the particle sizes of the coal briquettes.

Disclosure of Invention

In order to solve the technical problems, the invention provides fine screening equipment for mine clean coal, which aims to solve the problems described in the background technology.

The invention relates to a mine clean coal fine screening device, which is realized by the following specific technical means: the mine fine coal screening device comprises a device main body, collecting boxes are fixedly connected to two sides of the device main body, a collecting bin is fixedly connected to the interior of each collecting box, a driving box is fixedly connected to the bottom of the device main body, a second motor driving set is fixedly mounted in the driving box, a second-stage screening barrel is fixedly connected to the output end of the second motor driving set, grading nets are fixedly connected to two sides of the second-stage screening barrel, a feeding pipe is fixedly connected to one side of the top of the device main body, a first motor driving set is fixedly mounted at the top of the device main body, a rotating shaft is fixedly connected to the output end of the first motor driving set, a first stirring blade and a second stirring blade are respectively and fixedly connected to the outer surface of the rotating shaft, a primary screen is fixedly connected to the periphery of the rotating shaft, and a discharging block is fixedly connected to the outer surface, the bottom fixedly connected with processing barrel that elementary sieve was selected, the top fixedly connected with bushing of processing barrel, ejection of compact net gape has been seted up to the surface of processing barrel, the inside both sides fixedly connected with dispersion tooth of ejection of compact net gape, the bottom fixedly connected with chassis of processing barrel, the inside fixedly connected with of chassis has the bottom screen cloth, the inside fixedly connected with mounting panel of processing barrel, swing joint has the connecting rod between mounting panel and the bushing, the top and the bottom fixedly connected with turning block of connecting rod, one side fixedly connected with dispersion board of connecting rod.

Preferably, ejection of compact net gape encircles in the central point equidistance of handling barrel and is provided with eight, the dispersion board encircles in the central point equidistance of mounting panel and is provided with eight, the position of dispersion board is located in the middle of two ejection of compact net gape interval distances, just the dispersion tooth is located the outside exit of ejection of compact net gape.

Preferably, the connecting rod is arranged at the position, close to the inner wall of the treatment barrel, of the bottom of the bushing plate, the distance between the connecting rod and the inner wall of the treatment barrel is larger than the width of the mounting plate, and the bottom end and the top end of the connecting rod are rotatably arranged with the bushing plate and the mounting groove in the mounting plate through the rotating block.

Preferably, the number of the collecting boxes is two, and the two collecting boxes are distributed in a mirror image mode on the central axis of the equipment main body.

Preferably, the collection bin is embedded in the collection box, a cavity is arranged on the inner side of the position where the equipment main body is connected with the collection bin, one side of the cavity is communicated with one side of the collection bin, and a discharge pipe is communicated with the outer side of the collection bin.

Preferably, a leak hole is formed in the left side of the discharging block, a cavity is formed in the discharging block, and a through groove corresponding to the discharging block is formed in the primary screen.

Preferably, the grading nets are arranged in 6 groups, three groups, and the intervals between two groups of grading nets are the same, and the grading nets are arranged in a state of inclining to one side.

Preferably, the width of the hole pitch inside the bushing is greater than the width of the hole pitch inside the bottom screen, the density of the hole pitch inside the bottom screen is equal to the density of the hole pitch inside the discharge screen opening, and the width of the hole pitch inside the bottom screen and the discharge screen opening is greater than the width of the hole pitch inside the grading screen.

Preferably, the chassis has a tapered structure with a large top and a small bottom.

Has the advantages that:

1. the feeding pipe is communicated with the primary screening gate, the primary screening gate is used as a primary screening mechanism, the primary screening mechanism can rapidly and preliminarily distinguish caking and clean coal with larger granularity by the centrifugal force generated by the driving of the first motor driving unit, the first stirring blade which rotates along with the primary screening mechanism is used as a primary dispersing structure, and heavy caking is concentrated into the processing barrel through the sinking leakage plate under the action of the centrifugal force, so that the caking is conveniently processed.

2. The second stirring blade is arranged in the processing barrel, the agglomerates deposited in the processing barrel are dispersed through the following rotation, when the processing barrel rotates, the inner dispersion plate follows the rotation deformation through the rotation blocks at the two ends of the connecting rod to form uniform direction steering, the steering formed by the dispersion plate distinguishes the dispersed agglomerates for discharge preparation, the agglomerates collide with the discharge net opening to discharge the fine coal with dispersed granularity, the collision of the fine coal and the dispersion teeth increases the dispersion force, part of the fine coal is filtered out through the bottom screen in the bottom frame at the bottom, the dispersed fine coal is respectively discharged, the blockage is prevented, the non-dispersed fine coal is not collided with the inner structure at high speed, and the processing efficiency of the agglomerated fine coal is high.

3. The primary screening gate is arranged inside the secondary screening barrel, between the primary screening gate and the secondary screening barrel, the primary screening gate is driven by the first motor driving group to rotate at a high speed, so that light-weight filled clean coal can be discharged through pores in the discharging block, primary screening is performed according to the granularity of the clean coal, the clean coal with different granularities can be rapidly distinguished in two or three stages, the distinguishing efficiency and accuracy are improved, when the clean coal in two or three stages falls to the secondary screening barrel part through centrifugal force generated by high-speed rotation, the distinguishing between the three stages and the secondary screening can be performed, the second motor driving group enables the secondary screening barrel to rapidly rotate, and when the grading net is superposed with an inlet of the collecting bin, three-stage coal powder is discharged from the grading net, so that the clean coal in the inner part is screened in stages, and screening is more.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the whole apparatus of the present invention.

FIG. 3 is a schematic cross-sectional view of the whole apparatus of the present invention.

Fig. 4 is a schematic diagram of the primary screening grid structure of the present invention.

FIG. 5 is an enlarged view of the structure at A in FIG. 2 according to the present invention.

FIG. 6 is a cross-sectional view of the barrel of the present invention.

Fig. 7 is a schematic structural view of a dispersion plate according to the present invention.

FIGS. 1-7; the corresponding relation between the part names and the figure numbers is as follows: 1. an apparatus main body; 2. a collection box; 3. a first motor drive group; 4. a feeding pipe; 5. a drive box; 6. a second motor drive group; 7. a collection bin; 8. primary screening; 9. discharging a material block; 10. a secondary screening barrel; 11. a rotating shaft; 12. a first stirring blade; 13. a second stirring blade; 14. a bushing; 15. grading the net; 16. a treatment barrel; 17. a discharge net port; 18. dispersing teeth; 19. a chassis; 20. a bottom screen; 21. a connecting rod; 22. a dispersion plate; 23. mounting a plate; 24. and (6) rotating the block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

As shown in figures 1 to 7: a mine clean coal fine screening device comprises a device main body 1, a collecting box 2, a first motor driving group 3, a feeding pipe 4, a driving box 5, a second motor driving group 6, a collecting bin 7, a primary screening gate 8, a discharging block 9, a secondary screening barrel 10, a rotating shaft 11, a first stirring blade 12, a second stirring blade 13, a leakage plate 14, a grading net 15, a processing barrel 16, a discharging net opening 17, a dispersing tooth 18, an underframe 19, a bottom screening net 20, a connecting rod 21, a dispersing plate 22, a mounting plate 23 and a rotating block 24, wherein the collecting box 2 is fixedly connected to two sides of the device main body 1, the collecting bin 7 is fixedly connected to the inside of the collecting box 2, the driving box 5 is fixedly connected to the bottom of the device main body 1, the second motor driving group 6 is fixedly installed inside the driving box 5, the secondary screening barrel 10 is fixedly connected to the output end of the second motor driving group 6, the grading net 15 is fixedly connected to two sides of the secondary screening, a feeding pipe 4 is fixedly connected to one side of the top of an equipment main body 1, a first motor driving group 3 is fixedly installed at the top of the equipment main body 1, a rotating shaft 11 is fixedly connected to the output end of the first motor driving group 3, a first stirring blade 12 and a second stirring blade 13 are respectively fixedly connected to the outer surface of the rotating shaft 11, a primary sieve 8 is fixedly connected to the periphery of the rotating shaft 11, a discharging block 9 is fixedly connected to the outer surface of the primary sieve 8, a processing barrel 16 is fixedly connected to the bottom of the primary sieve 8, a bushing 14 is fixedly connected to the top of the processing barrel 16, a discharging screen opening 17 is formed in the outer surface of the processing barrel 16, dispersing teeth 18 are fixedly connected to two inner sides of the discharging screen opening 17, an underframe 19 is fixedly connected to the bottom of the processing barrel 16, a bottom screen 20 is fixedly connected to the inside of the underframe 19, a mounting plate 23 is fixedly connected to the inside of, the top and bottom of the connecting rod 21 are fixedly connected with a rotating block 24, and one side of the connecting rod 21 is fixedly connected with a dispersion plate 22.

Example 1: ejection of compact net gape 17 encircles in the central point equidistance of handling bucket 16 and is provided with eight, and dispersion board 22 encircles in the central point equidistance of mounting panel 23 and is provided with eight, and the position of dispersion board 22 is located in the middle of two ejection of compact net gapes 17 interval distances, and dispersion tooth 18 is located the outside exit of ejection of compact net gape 17, can lead the discharge with inside coal grain, concentrates the coal grain that does not disperse, wherein: the connecting rod 21 sets up the position by the inner wall of the processing barrel 16 in bushing 14 bottom, and the distance of connecting rod 21 and the inner wall of processing barrel 16 is greater than the width of mounting panel 23, and the bottom and the top of connecting rod 21 rotate the setting through mounting groove in turning block 24 and bushing 14 and the mounting panel 23, prevent inside jam.

Example 2: collecting box 2 is provided with two, and two collecting boxes 2 distribute in the axis mirror image of equipment main body 1, and the collection of dispersion clean coal increases the capacity of collecting, wherein: collect the storehouse 7 embedding and set up in the inside of collecting box 2, the position inboard that equipment main part 1 is connected with collection storehouse 7 is provided with the cavity, and one side of cavity is linked together with one side of collecting storehouse 7, and the outside intercommunication of collecting storehouse 7 has the discharging pipe, makes inside clean coal stage-by-stage nature filter.

Example 3: the left side of ejection of compact piece 9 is provided with the small opening, and the inside of ejection of compact piece 9 is provided with the cavity, is provided with the logical groove that corresponds with ejection of compact piece 9 on the elementary sieve gate 8, makes the clean coal fall out fast, wherein: the grading nets 15 are arranged in 6 groups, the three grading nets are arranged in a group, the intervals between the two groups of grading nets 15 are the same, the grading nets 15 are arranged in a state of inclining towards one side, and the clean coal can be conveniently discharged according to the rotating direction of centrifugal force.

Example 4: the inside pitch-row width of the inside pitch-row of bushing 14 is greater than the inside pitch-row width of end screen cloth 20, and the inside pitch-row density of end screen cloth 20 equals the inside pitch-row density of ejection of compact mouth of cloth 17, and the inside pitch-row width of end screen cloth 20 and ejection of compact mouth of cloth 17 is greater than the inside pitch-row width of hierarchical net 15, makes the clean coal of different stages grade, wherein: the bottom frame 19 is in a conical structure with a large upper part and a small lower part, so that the inner clean coal is prevented from being blocked.

The working principle is as follows: firstly, putting clean coal into the interior of a primary sieve gate 8 through a feeding pipe 4, turning on a first motor driving group 3, enabling a rotating shaft 11 connected with an output end and the primary sieve gate 8 to rotate, enabling a first stirring blade on the rotating shaft 11 to quickly disperse the clean coal, enabling second-level and third-level clean coal with lighter mass in the clean coal to pass through the inner wall of the primary sieve gate 8 and be discharged through a discharging block 9 and be concentrated in the interior of a second-level sieving barrel 10 by centrifugal force generated by the primary sieve gate 8, enabling a second motor driving group 6 connected with the second-level sieving barrel 10 to rotate the second-level sieving barrel 10, enabling the second-level and third-level clean coal in the second-level sieving barrel 10 to be far away from the interior of the second-level sieving barrel 10 through the generated centrifugal force, enabling the second-level sieving barrel 10 to be butted with a collecting bin 7 after rotating, enabling the third-level clean coal to be filtered again through a grading net 15, after the second-level and third-level clean coal is screened in a grading manner, the clean coal which is agglomerated due to large gravity in the primary screen 8 sinks into the processing barrel 16 through the leakage plate 14 by gravity, the second stirring blade 13 rotates through the rotating shaft 11 connected with the output end of the first motor driving group 3, the clean coal in the processing barrel is scattered, part of the scattered clean coal leaks out of the bottom screen 20 in the processing barrel 16, the other part of the scattered clean coal rotates in the processing barrel 16 through the rotating block 24 connected with the mounting plate 23 and the leakage plate 14, the connecting rod 21 turns around, the dispersing plates 22 are parallel to each other, the clean coal is led out, the led-out clean coal is screened through the discharging net opening 17, the clean coal is discharged, the clean coal collides with the dispersing teeth 18 and is dispersed, and the clean coal which is not scattered collides in the processing barrel 16 for secondary processing.

Claims

1. The mine clean coal fine screening device is characterized by comprising a device main body (1), wherein collecting boxes (2) are fixedly connected to two sides of the device main body (1), collecting bins (7) are fixedly connected to the inside of the collecting boxes (2), a driving box (5) is fixedly connected to the bottom of the device main body (1), a second motor driving set (6) is fixedly installed inside the driving box (5), a second-stage screening barrel (10) is fixedly connected to the output end of the second motor driving set (6), a grading net (15) is fixedly connected to two sides of the second-stage screening barrel (10), a feeding pipe (4) is fixedly connected to one side of the top of the device main body (1), a first motor driving set (3) is fixedly installed at the top of the device main body (1), and a rotating shaft (11) is fixedly connected to the output end of the first motor driving set (3), the outer surface of the rotating shaft (11) is fixedly connected with a first stirring blade (12) and a second stirring blade (13) respectively, the periphery of the rotating shaft (11) is fixedly connected with a primary sieve gate (8), the outer surface of the primary sieve gate (8) is fixedly connected with a discharging block (9), the bottom of the primary sieve gate (8) is fixedly connected with a processing barrel (16), the top of the processing barrel (16) is fixedly connected with a bushing (14), the outer surface of the processing barrel (16) is provided with a discharging net opening (17), two sides of the inside of the discharging net opening (17) are fixedly connected with dispersing teeth (18), the bottom of the processing barrel (16) is fixedly connected with an underframe (19), the inside of the underframe (19) is fixedly connected with a bottom screen (20), the inside of the processing barrel (16) is fixedly connected with a mounting plate (23), and a connecting rod (21) is movably connected between the mounting plate (23) and the bushing (14), the top and the bottom of connecting rod (21) are fixedly connected with turning block (24), one side fixedly connected with dispersion board (22) of connecting rod (21).

2. The mine clean coal fine screening apparatus of claim 1, wherein: ejection of compact net gape (17) encircle in the central point equidistance of processing bucket (16) and be provided with eight, dispersion board (22) encircle in the central point equidistance of mounting panel (23) and are provided with eight, the position of dispersion board (22) is located in the middle of two ejection of compact net gapes (17) interval distance, just dispersion tooth (18) are located the outside exit of ejection of compact net gape (17).

3. The mine clean coal fine screening apparatus of claim 1, wherein: the connecting rod (21) sets up the position by processing bucket (16) inner wall in bushing (14) bottom, the distance of connecting rod (21) and processing bucket (16) inner wall is greater than the width of mounting panel (23), the bottom and the top of connecting rod (21) are passed through turning block (24) and bushing (14) and the mounting groove rotation setting in mounting panel (23).

4. The mine clean coal fine screening apparatus of claim 1, wherein: the two collecting boxes (2) are arranged, and the two collecting boxes (2) are distributed on the central axis of the equipment main body (1) in a mirror image mode.

5. The mine clean coal fine screening apparatus of claim 1, wherein: collect storehouse (7) embedding and set up in the inside of collecting box (2), the position inboard that equipment main part (1) and collection storehouse (7) are connected is provided with the cavity, and one side of cavity is linked together with one side of collecting storehouse (7), the outside intercommunication of collecting storehouse (7) has the discharging pipe.

6. The mine clean coal fine screening apparatus of claim 1, wherein: a leak hole is formed in the left side of the discharging block (9), a cavity is formed in the discharging block (9), and a through groove corresponding to the discharging block (9) is formed in the primary screening gate (8).

7. The mine clean coal fine screening apparatus of claim 1, wherein: the grading nets (15) are arranged in 6 groups, three groups are arranged, the intervals between two groups of grading nets (15) are the same, and the grading nets (15) are arranged in a state of inclining to one side.

8. The mine clean coal fine screening apparatus of claim 1, wherein: the width of the hole distance in the bushing (14) is larger than that in the bottom screen (20), the hole distance density in the bottom screen (20) is equal to that in the discharge net opening (17), and the hole distance widths in the bottom screen (20) and the discharge net opening (17) are larger than that in the grading net (15).

9. The mine clean coal fine screening apparatus of claim 1, wherein: the bottom frame (19) is in a conical structure with a large upper part and a small lower part.