CN113145460B - Energy-saving coal dry separation system with multiple air supply sources - Google Patents
Energy-saving coal dry separation system with multiple air supply sources Download PDFInfo
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- CN113145460B CN113145460B CN202110343817.9A CN202110343817A CN113145460B CN 113145460 B CN113145460 B CN 113145460B CN 202110343817 A CN202110343817 A CN 202110343817A CN 113145460 B CN113145460 B CN 113145460B
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- 238000000926 separation method Methods 0.000 title claims abstract description 218
- 239000003245 coal Substances 0.000 title claims abstract description 130
- 239000000428 dust Substances 0.000 claims abstract description 162
- 239000000463 material Substances 0.000 claims abstract description 48
- 238000007599 discharging Methods 0.000 claims abstract description 15
- 230000033228 biological regulation Effects 0.000 claims abstract description 12
- 239000004744 fabric Substances 0.000 claims description 25
- 239000010878 waste rock Substances 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
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- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012216 screening Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 2
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- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 238000010276 construction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/02—Arrangement of air or material conditioning accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention provides an energy-saving coal dry separation system with multiple air supply sources, which comprises a raw coal feeding part, an air supply part, a separation part and a dust removal part, wherein the raw coal feeding part comprises a product conveyor, a buffer bin and an intelligent conveying device, the separation part comprises a host bracket, an intelligent vibration main separation bed device, a host hanging and discharging device, the air supply part comprises an intelligent air regulation system consisting of a left main fan and a right main fan, the dust removal part comprises an intelligent air regulation dust removal system, and the intelligent air regulation system is provided with at least two air supply sources. The multi-air source air supply energy-saving coal dry separation system is beneficial to reducing the retention time of materials and accelerating the movement speed of the materials, and improves the processing capacity of the time of a separation bed unit. The device not only can improve sorting precision, but also can reduce energy consumption, save energy and electricity from the aspect of environmental protection, and avoid unnecessary waste.
Description
Technical Field
The invention belongs to the technical field of coal separation, and particularly relates to an energy-saving dry coal separation system with multiple air sources for air supply, which is suitable for a coal separation system with ultra-large treatment capacity.
Background
Coal is a solid combustible mineral that is gradually formed by ancient plants buried underground through complex biochemical and physicochemical changes. Coal is known as black gold and industrial food, is one of main energy sources used in human world in the eighteenth century, enters the twenty-first century, is a source of energy which is indispensable for the production and life of people in the present and future for a long time after all although the value of coal is far less than before, is also related to the stability of the development of the industry in China and the whole social aspect, and is the most important in the energy safety in China.
The coal separation mainly comprises two directions of water washing and dry separation, and the water washing basically adopts processes such as jigging, dense medium, floatation and the like, and has the advantages of mature process, high separation precision and large treatment capacity. The defects are that the construction investment is large, the period is long, the production cost is high, the larger water resource consumption and waste exist, and the water consumption for washing 1 ton of raw coal is about 0.1m 3 Low quality byproducts such as coal slime are also produced. Dry separation is a coal separation method which has been in existence and developed slowly for nearly twenty years, and has the advantages of no water consumption, simple process, low investment and low production cost, and the main representative process is a wind dry coal separation process. From the region of coal distribution, the western region is 80.4% nationwide, the middle region is 15.2% nationwide, and the eastern region is 4.4% nationwide. The western part is the main distribution area of coal in China and is just the arid area with little water, so compared with water washing, the dry separation has wider requirements and prospects, and the dry separation is widely popularized in China and all over the world in a very short period. The moisture content of coal, as well as ash and sulfur content, are important factors affecting the quality of coal. In order to improve the quality of coal, it is necessary to dewater and sort the coal. With the development of coal upgrading technology, coal drying and dry separation processes are widely applied and have achieved significant success.
However, the existing wind dry coal separation technology has the defects of poor separation precision, small processing capacity, higher requirements on coal types and the like. In addition, the screening device for the existing intelligent dry coal separator also needs to crush the coal particles with larger particles after screening the coal so as to meet the subsequent processing requirements, thereby greatly reducing the working efficiency; in addition, the coal screening device can generate a large amount of dust in the process of screening coal, the dust can pollute the surrounding environment, and the physical health of operators can be seriously affected when the operators work in such working environments for a long time. In addition, a large amount of energy is consumed in the process of treating the dust.
Therefore, the improved wind dry coal separation process is more suitable for separation in various occasions or mining areas.
Disclosure of Invention
Based on the problems in the prior art, the invention provides an energy-saving coal dry separation system with multiple air sources for air supply, which not only solves the technical problems in the prior art, but also improves the treatment capacity of coal separation and reduces the energy consumed in the separation process.
According to the technical scheme of the invention, the energy-saving coal dry separation system with multiple air supply sources comprises a raw coal feeding part, an air supply part, a separation part and a dust removal part, wherein the raw coal feeding part comprises a product conveyor, a buffer bin and an intelligent conveying device, the separation part comprises a host bracket, an intelligent vibration main separation bed device, a host hanging device and a discharging device, the air supply part comprises an intelligent air regulation system consisting of a left main fan and a right main fan, the dust removal part comprises an intelligent air regulation dust removal system, and the intelligent air regulation system is provided with at least two air sources.
Wherein, left main fan is connected to left branch wind ware via left main fan blast gate, and left branch wind ware is blown into first group separation room with the separation wind.
Further, the right main blower is connected to a right air separator via a right main blower air valve, the right air separator blowing the sorting air into the second component sorting chamber.
Further, a left overhaul observation window is arranged on an air duct of the left main fan which is sent to the left air distributor through the left main fan air valve.
Further, a right overhaul observation window is arranged on an air duct of the right main fan which is sent into the right air distributor through a right main fan air valve.
Further, a left service viewing window is disposed between the left main blower damper and the left splitter.
In addition, according to the different amount of wind that main selection bed each position needs in intelligent vibration main selection bed device, realize the differentiation air feed demand.
In addition, more than 6 air chambers are arranged below a main selection bed in the intelligent vibration main selection bed device, and air sources are distributed according to the separation parameters required by each air chamber.
The multi-air source air supply energy-saving coal dry separation system is beneficial to reducing the retention time of materials and accelerating the movement speed of the materials, and improves the processing capacity of the time of a separation bed unit. The device not only can improve sorting precision, but also can reduce energy consumption, save energy and electricity from the aspect of environmental protection, and avoid unnecessary waste.
Drawings
FIG. 1 is a schematic diagram of a multi-source air supply energy-saving dry coal separation system according to the present invention;
FIG. 2 is a top view of the intelligent vibratory main selection bed of FIG. 1;
FIG. 3 is a schematic view of a bed surface through hole in the intelligent vibratory main selection bed of FIG. 2;
FIG. 4 is a schematic side view of the intelligent vibratory main selection bed of FIG. 1 in a longitudinal direction;
FIG. 5 is a schematic side view of a longitudinal direction of an intelligent vibratory main selector bed with mounted selector bars;
FIG. 6 is a schematic view of the vibration direction of the back plate shown in FIG. 4;
FIG. 7 is a cross-sectional view of a dry coal separation system with a separation bed of product chute;
FIG. 8 is an exterior view of an energy efficient dry coal separation system with multiple air supply sources for installing a quick access door;
FIG. 9 is a schematic illustration of the loading and unloading system based on FIG. 8;
FIG. 10 is a partial view of a dust removal system of an energy efficient dry coal separation system with multiple air supply sources;
FIG. 11 is a schematic cross-sectional view of a dust removal air duct;
FIG. 12 is a schematic diagram of a forced air separation of an energy-efficient dry coal separation system with multiple air supply sources.
Reference numerals in the drawings are as follows: 1. a left main fan; 2. a left main fan air valve; 3. a left wind separator; 4. a product classification chute; 5. a host bracket; 6. a right wind separator; 7. a right main fan air valve; 8. a right main fan; 9. an air inlet of the dust remover; 10. a full bag dust collector; 11. a totally-enclosed dust collection cover; 12. a dust removal pipeline; 13. an air inlet pipeline of the left main fan; 14. a right main fan air inlet pipeline; 15. a main selection bed; 16. hanging a host; 17. an induced draft pipe; 18. a cloth bag induced draft fan; 19. a draught fan chimney; 21. a material inlet; 22. clean coal discharge chute; 23. a middling discharge chute; 24. gangue discharge chute; 25. a gangue discharge cylinder; 26. a gangue overflow port; 27. a gangue discharge area; 28. primary sorting areas; 701. a left overhaul observation window; 702. a right overhaul observation window; 91. is a belt scale; 92. a belt conveyor; 1501. a longitudinal angle monitor; 1502. a lateral angle monitor; 1101. a quick access door; 1102. dust filtering cloth; 8-1, an air inlet transverse pipe of the dust remover; 8-2, connecting the dust remover with the square pipe through air inlet; 8-3, checking a blind plate by air inlet of the dust remover; 31. sorting air holes; 32. a bed panel; 41. a back plate; the progressively higher bars b1, b2, b3, … …, bn … ….
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present invention. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the inventor, are within the scope of the invention.
The invention provides an energy-saving coal dry separation system with multiple air sources for air supply, which is further described with reference to the accompanying figure 1, and the figure 1 is a schematic structural diagram of the energy-saving coal dry separation system with the multiple air sources for air supply according to the invention. As shown in fig. 1, the multi-wind source air supply energy-saving coal dry separation system comprises a raw coal feeding part, an air supply part, a separation part and a dust removal part, wherein the raw coal feeding part comprises a product conveyor, a buffer bin and an intelligent conveying device, the separation part comprises a main machine support, an intelligent vibration main separation bed device, a main machine hanger 16 and a discharging device, the air supply part comprises an intelligent air regulation system consisting of a left main fan and a right main fan, and the dust removal part comprises an intelligent air regulation dust removal system.
Further, raw coal (including but not limited to coal products or coal materials) is sent into a surge bin by a raw coal product conveyor to be sorted and waiting for sorting, and raw coal in the surge bin is intelligently distributed to a sorting part for sorting through an intelligent conveying device. The sorting part comprises a host bracket 5, an intelligent main sorting bed device, a host hanger 16 and a discharging device, wherein the intelligent main sorting bed device is arranged on the host bracket 5 through the host hanger 16, the intelligent main sorting bed device comprises a main sorting bed 15, and the discharging device is a receiving chute positioned at the lower part of the intelligent main sorting bed device. The receiving chute is preferably a product chute 4.
The air supply part comprises an intelligent air regulating system formed by a left main fan 1 and a right main fan 8, the left main fan 1 is connected to a left air distributor 3 through a left main fan air valve 2, and the left air distributor 3 blows sorting air into a first component sorting chamber; the right main fan 8 is connected to the right air separator 6 via a right main fan damper 7, the right air separator 6 blowing the sorting air into the second component sorting chamber.
The dust removing part comprises an intelligent wind-adjusting dust removing system, the intelligent wind-adjusting dust removing system comprises a dust removing pipeline 12, a full-cloth bag dust remover 10 and a cloth bag induced draft fan 18, a full-closed dust collecting hood 11 arranged at the upper part of the sorting part conveys dust generated by the sorting part to a dust remover air inlet 9 through the dust removing pipeline 12, miscellaneous or dust-containing gas entering the full-cloth bag dust remover 10 through the dust remover air inlet 9, the full-cloth bag dust remover 10 is connected with a left main fan air inlet pipeline 13 and a right main fan air inlet pipeline 14, the air inlet pipeline 13 of the left main fan 1 conveys gas purified by the full-cloth bag dust remover 10 back to the left main fan 1, and the air inlet pipeline 14 of the right main fan 8 conveys gas purified by the full-cloth bag dust remover 10 back to the right main fan 8. The dust removing part further comprises a cloth bag induced draft fan 18, the cloth bag induced draft fan 18 is connected with an induced draft fan chimney 19 and an induced draft pipeline 17, the induced draft pipeline 17 introduces dust-containing gas into the full cloth bag dust remover 10, and part of clean gas processed by the cloth bag dust remover 10 is discharged into the atmosphere through the induced draft fan chimney 19.
Further, a left inspection window 701 is preferably provided on the air duct of the left main fan 1 fed into the left air splitter 3 via the left main fan damper 2. Likewise, a right inspection window 702 is preferably provided in the duct of the right main fan 8 fed to the right splitter 6 via the right main fan damper 7. More preferably, a left service observation window 701 is provided between the left main blower damper 2 and the left splitter 3, and a right service observation window 702 is provided between the right main blower damper 7 and the right splitter 6. More than 6 air chambers are arranged below a main selection bed in the intelligent vibration main selection bed device, and air sources are distributed according to the separation parameters required by each air chamber.
The multi-wind-source air supply energy-saving coal dry separation system is provided with a multi-wind-source system consisting of a plurality of main fans, so that intelligent air regulation is realized. In the air separation process, different air supply requirements are realized according to different air quantities required by all parts of the main separation bed 15. Compared with the existing dry separator, the energy-saving coal dry separation system with multiple wind sources has the advantages that only one main fan is arranged, the wind quantity and the wind pressure of the wind sources are single and not adjustable, the main separation bed area of the energy-saving coal dry separation system with the wind supply of the multiple wind sources is large, the wind chambers are even more than ten, and the wind quantity and the wind pressure required by each wind chamber have different parameters according to different corresponding positions under the main separation bed; furthermore, the technical problem that wind pressure is not the same parameter even though the wind quantity is adjustable due to the fact that a main wind source is arranged below the oversized sorting bed surface is solved. The multi-air source system is adopted, so that the adjustment of the sorting parameters of the dry separator is realized; the air supply system can also adjust different air supply amounts of a plurality of air sources at any time, and can distribute the air sources according to the separation parameters required by each air chamber, so that the separation precision can be improved, the energy consumption can be reduced from the aspect of environmental protection, the energy is saved, and the unnecessary waste is avoided.
Furthermore, the multi-wind-source air supply energy-saving coal dry separation system adopts an intelligent wind-adjusting dust-removing system, preferably a full-bag dust remover, and the scheme of dual configuration of cyclone dust removal and bag dust removal adopted by the original coal dry separation system is abandoned. The dust collector system of the original coal dry separator is provided with a cyclone dust collector and a cloth bag dust collector, the cyclone dust collector is large in treatment air quantity and small in occupied area, the treated air is used as circulating air continuously, the dust collection path trend is that the main fan leads out the air from a dust hood of the equipment, the air enters the cyclone dust collector through a pipeline, large-particle dust is removed in the cyclone dust collector, then enters the main fan, is fed into an air chamber by the main fan, is fed into a main separation bed from the air chamber, enters the dust hood, is sucked away by the main fan again, and is repeatedly circulated in such a way, and the air path circulation of the dry separator equipment is ensured; the cloth bag dust collector also draws air from the dust hood, so that negative pressure is generated on the balanced air path, and dust is prevented from overflowing. However, because the cyclone dust collector can only remove large-particle dust in the air passage, the fine dust is always circulated in a closed circuit along with the air, and more dry separators can emit dust after long-time operation.
The multi-wind source air supply energy-saving coal dry separation system adopts the full-bag dust collector, all circulating wind paths pass through the bag dust collector, the dust collection efficiency of the bag dust collector can reach more than 99%, 99% of dust in the wind paths can be removed, the clean wind coal separation is completely realized, the resistance of the bag dust collector is much smaller than that of the cyclone dust collector, the energy consumption of a main fan motor can be reduced, and the energy sources can be saved.
As shown in fig. 2, the source air supply coal dry separation system adopts an intelligent vibrating main separation bed surface with a pentagon shape and a triangular side, the gangue movement direction advances along the transverse direction of the intelligent vibrating main separation bed, and the clean coal movement direction advances along the longitudinal direction of the intelligent vibrating main separation bed. The discharging section of the clean coal adopts a trapezoid frame. The coal materials are intelligently distributed to a material inlet 21 of an intelligent vibration main selection bed through an intelligent conveying device, conveyed to a primary separation area 28 on a bed body of the intelligent vibration main selection bed through the material inlet 21, and a plurality of separation gradually-raised bars b1, b2, b3, … … and bn … … are arranged on the intelligent vibration main selection bed; the sorting gradually-raised lattice bars are paved on the intelligent vibration main selection bed, the sorting gradually-raised lattice bars and the feeding frame of the intelligent vibration main selection bed form a certain sorting included angle N, wherein the sorting included angle N is an acute angle, and the size of the sorting included angle is set according to the coal components or the moisture of the equipment installation mining area, so that sorting indexes of the sorting precision are improved according to local conditions and to the maximum limit. The material inlet 21 is arranged at the edge of the intelligent vibration main selection bed feeding frame, preferably, the highest point of the intelligent vibration main selection bed feeding frame is overlapped with the highest point of the material inlet 21, so that coal materials are vibrated and propelled towards the intelligent vibration main selection bed gangue discharge frame along the intelligent vibration main selection bed upper frame, each high-point oblique connecting line of the multiple sorting gradually-rising bars b1, b2, b3, … … and bn … … is a certain material propulsion angle M with the intelligent vibration main selection bed upper frame, and the material propulsion angle M is set according to the gangue content of coal sorted on site, so that the sorting distinction degree of clean coal, middling and gangue is improved as much as possible. A gangue discharge channel is arranged close to the intelligent vibrating main separation bed gangue discharge frame, the separated gangue is discharged along the gangue discharge channel through a gangue discharge groove 24, a gangue overflow port 26 is arranged at the top end of the intelligent vibrating main separation bed gangue discharge frame, and the gangue overflow port 26 is used for rapidly discharging massive gangue or piled gangue; in addition, compared with the existing dry separation system, the energy-saving coal dry separation system with multiple air source air supply has the advantages that the coal separation amount per unit time is higher than 30%, and a large amount of waste rocks are generated in a short time, so that the waste rocks which are discharged through the waste rock discharge groove 24 and the waste rock overflow port 26 can be discharged from the waste rock discharge area 27 through the waste rock discharge cylinder 25 due to the fact that the waste rock discharge cylinder 25 is additionally arranged on the side surface of the waste rock discharge frame of the intelligent vibration main separation bed. Clean coal discharge chute 22, middling discharge chute 23, waste rock discharge chute 24 have set gradually respectively at intelligent vibration main separation bed separation lower frame, clean coal discharge chute 22, middling discharge chute 23, waste rock discharge chute 24 etc. the separation limit length that occupies is confirmed according to the separation area of intelligent vibration main separation bed body, vibration separation vibration frequency and coal impurity content and the moisture content that set up. The intelligent vibrating main separation bed separation lower frame is in a broken line shape, namely, a part of the intelligent vibrating main separation bed separation lower frame is vertical to the intelligent vibrating main separation bed feeding frame and parallel to the intelligent vibrating main separation bed separation upper frame, a part of the intelligent vibrating main separation bed separation lower frame is folded upwards in a clean coal separation area and forms an obtuse angle with the intelligent vibrating main separation bed gangue discharge frame, so that the strokes of gangue and clean coal are sequentially shortened, and the treatment capacity is increased.
The energy-saving coal dry separation system with multiple air sources for air supply adopts an intelligent vibrating main separation bed surface in a pentagon shape with three right-angle sides, firstly, the transverse distance of a gangue discharge end is shortened, and the residence time of gangue on the main separation bed is reduced; secondly, the longitudinal distance of the clean coal discharging end is shortened, and the distance of an air chamber is transversely prolonged from the forefront end of the main separation bed to the gangue end, so that the area of the clean coal discharging end is basically ensured to be unchanged, and the changes are all to reduce the residence time of materials on the main separation bed. The lower angle is changed into a broken line trapezoid, so that the strokes of gangue and clean coal are shortened, and the treatment capacity is increased.
As further shown in fig. 2, the separation lower frame length of the part of the intelligent vibration main separation bed which is perpendicular to the feeding frame of the intelligent vibration main separation bed and parallel to the separation upper frame of the intelligent vibration main separation bed is a3, the separation lower frame length of the rest of the intelligent vibration main separation beds is a4, the ratio of the lengths is set according to the separation amount of the clean coal and the clean coal distinction degree, for example, the separation coal is classified into super clean coal, middling coal, impurity-containing middling coal, gangue and the like, and the folding line length ratio of the separation lower frame of the intelligent vibration main separation bed is adjusted according to the needs of a user; likewise, setting the length a5 of the gangue discharging frame of the intelligent vibration main selecting bed according to the gangue moving speed and the drying speed of the separated coal; the intelligent vibration main separation bed feeding frame is divided into a material inlet 21 part and a clean coal separation edge, the length of the material inlet 21 part is a1, the length of the clean coal separation edge is a2, and the proportion between a1 and a2 of the intelligent vibration main separation bed feeding frame is set according to the amount of coal transported to the vibration separation part in unit time. The intelligent vibrating main selection bed upper frame is arranged at the waste rock overflow outlet 26, the length of the waste rock overflow outlet 26 is a6, and the ratio between the length a6 and the length a7 of the rest part of the intelligent vibrating main selection bed upper frame is set according to the waste rock amount; alternatively, the spoil overflow 26 may be closed for applications where the amount of spoil to be discharged is relatively small.
Further, a plurality of sorting gradually-raised bars b1, b2, b3, … … and bn … … are sequentially arranged in parallel, high points b12, b22, b32, … … and bn2 … … of each gradually-raised bar form an oblique line (connecting line), each high point oblique connecting line is a certain material pushing angle M with an upper frame of the intelligent vibration main selection bed, and low points b11, b21, b31, … … and bn1 … … of each gradually-raised bar are respectively connected with a feeding frame of the intelligent vibration main selection bed and a sorting lower frame of the intelligent vibration main selection bed. As shown in fig. 5, the gradually-increasing bars are fixed on the bed plate, and the high point of each gradually-increasing bar is close to the intelligent vibration main selection bed back plate 41. The height of the high points of the progressively higher bars is greater than the height of the low points of the progressively higher bars.
Compared with the prior equal-height bed panel grating, the grating has the function that the material with high density can move upwards along the grating when the separation bed works, so that the material forms an obvious demarcation strip for separating high-density and low-density materials on the separation bed. The main selection bed has large material quantity, and the existing grid bars have the problems of unstable material movement track caused by the fact that the height of the existing grid bars is far smaller than the thickness of the bed material and the density of the existing grid bars is large, so that the existing grid bars are not suitable for processing the material with large processing capacity for separation. The invention adopts the gradually-raised bars as shown in fig. 5, and the height of the bars from the back plate to the discharge side is gradually reduced, so that the movement track of the high-density material is kept stable during the diffusion impact of the feeding material, and the rapid discharge of the low-density material at the discharge end is facilitated.
As shown in fig. 2 and 3, the sorting air holes 31 are distributed over the intelligent vibration main sorting bed panel, and the diameter of the sorting air holes near the sorting upper frame of the intelligent vibration main sorting bed is gradually larger than that near the sorting lower frame of the intelligent vibration main sorting bed. Referring specifically to fig. 3, the separation air hole 31 is obliquely arranged with the intelligent vibration main separation bed panel, that is, the separation air hole 31 is not vertically arranged with the intelligent vibration main separation bed panel, the wind direction of the intelligent vibration main separation bed panel before passing through the bed panel is vertically incident with the intelligent vibration main separation bed panel, that is, the separation air flow vertically enters the intelligent vibration main separation bed panel, and the separation air flow after passing through the separation air hole 31 obliquely exits from the bed panel to separate coal materials. Correspondingly, the partition plates of the bed plate are arranged between the separation wind holes 31 at intervals and are used for adjusting the interval between the air separation wind holes 31. The intelligent vibratory main selector bed panel is preferably a bed panel 32 with a selector air hole. The existing traditional bed surface sorting air holes are vertical through holes, and air is blown out vertically through the small holes; the intelligent vibration main selection bed plate sorting air holes are changed into inclined holes, and the inclined direction is a discharge end, so that when air flows are blown out from the sorting air holes, an acting force in the inclined and discharge directions is generated, and the acting force can accelerate the movement speed of materials on the bed surface. Preferably, the first bed surface hole at the feeding end of the intelligent vibration main selection bed surface plate is changed into an inclined hole, the inclined direction is a discharging end, and the other intelligent vibration main selection bed surface plate selection air holes adopt vertical selection air holes.
Fig. 4 is a schematic side view of the intelligent vibration main selector bed of fig. 1 in the longitudinal direction, and fig. 5 is a schematic side view of the intelligent vibration main selector bed with the sorting bars mounted therein in the longitudinal direction. As shown in fig. 4 and 5, the multi-wind-source air supply energy-saving coal dry separation system adopts a backboard structure, the backboard is perpendicular to the intelligent vibration main separation bed panel, and the backboard 41 is arranged on the separation upper frame of the intelligent vibration main separation bed panel and is fixedly connected together. Alternatively, the back plate 41 is detachably connected with the sorting upper frame of the intelligent vibration main sorting bed surface plate 32. As shown in the schematic diagram of the vibrating direction of the back plate in fig. 6, the vibrating direction of the bed surface plate is parallel to the longitudinal thrust to which the coal material is subjected, that is, the coal material is subjected to downward longitudinal thrust under the dual actions of the bed surface vibration and the back plate. The backboard forms a certain included angle alpha with the ground.
The intelligent vibrating main selecting bed surface board adopts a vertically arranged backboard to directly provide a longitudinal thrust for the coal materials in the sorting. Compared with the traditional main separation bed, the angle between the back plate and the main separation bed surface is an acute angle of 60-70 degrees, and the separation principle based on the dry separation machine can know that the existing back plate has the effect of turning the materials on the separation bed; the invention changes the angle of the back plate into 90 degrees which is vertical, so that the original turning acting force is converted into a thrust for forward movement of the material in the sorting process of the dry separator, and the movement speed of the material on the bed surface is accelerated.
Further, as shown in fig. 4, a longitudinal angle monitor 1501 and a transverse angle monitor 1502 are installed on the sorting bed body, the longitudinal angle monitor 1501 is used for monitoring the longitudinal vibration angle of the intelligent vibration main sorting bed, and the transverse angle monitor 1502 is used for monitoring the transverse vibration angle of the intelligent vibration main sorting bed; the angle parameters of the separation bed body are displayed in real time, so that the automatic adjustment of the separation bed body is completed by more effectively matching with the production, and the intellectualization of the multi-air-source air supply energy-saving coal dry separation system is greatly improved.
As shown in fig. 7 and 8, an external view of the multi-air-source air-supply energy-saving dry coal separation system with a rapid access door is shown, the multi-air-source air-supply energy-saving dry coal separation system further comprises a full-closed dust hood 11 and a rapid access door 1101, and the full-closed dust hood 11 is buckled on a separation part, so that full-closed separation is realized; the quick access door 1101 is installed at the side of the upper cover of the sorting section, and maintenance and repair operations of the equipment are routinely performed through the quick access door 1101. A product chute 4 is arranged below the intelligent vibrating main separation bed body, and the product chute 4 is divided into a clean coal discharge chute 22, a middling discharge chute 23 and a gangue discharge chute 24 according to different types of received materials. Further, four sides of the full-closed dust hood 11 just correspond to four sides of the main selection bed 15, and two sides and rear sides of the full-closed dust hood are connected with two sides and rear sides of the main selection bed 15 by using dust filtering cloth 1102, so that no dust gas is emitted. The front of the full-closed dust collection cover 11 is provided with a plurality of rapid access doors 1101, the rapid access doors 1101 can be opened to directly reach the bed surface of the main selection bed 15, so that maintenance work can be conveniently carried out, in addition, the top of the full-closed dust collection cover 11 is provided with a pipeline hole connected with the full-cloth bag dust collector 10, and gas mixed with dust can enter the full-cloth bag dust collector 10 along a pipeline through the pipeline hole for filtering and circulating.
Further, two sets of pipeline holes are arranged on the fully-closed dust collection cover 11, the two sets of pipeline holes are respectively connected to the full-bag-type dust collector 10, and independent dust collection power systems are arranged in the pipeline holes and used for adjusting dust collection power of the pipeline holes with the independent dust collection power systems according to dust concentration differences in the upper space of the intelligent vibration main selection bed.
As shown in fig. 9, an intelligent material conveying system is additionally arranged on the basis of fig. 8, a belt scale 91 is arranged below a belt conveyor 92 for dynamically conveying coal materials, the belt scale 91 is preferably an intelligent belt scale with a wireless transmission function, the intelligent belt scale can be used for conveying real-time conveying quantity of the coal materials to a central control platform of a central control room, and material data analysis and control of coal sorting are realized on the central control platform of the central control room in real time.
As shown in fig. 1, dust from the intelligent vibration main separation bed separation space of the pipeline holes sequentially passes through the dust collector air inlet 9 and enters the full bag dust collector 10 through the dust collection pipeline 12. As shown in fig. 10, in the structure that the dust enters the full-bag-type dust collector 10 through the dust collector air inlet 9, the dust collector air inlet 9 is provided with a dust buffer device, preferably a pillow-shaped body for the dust buffer device, and the dust enters the full-bag-type dust collector 10 after being buffered in the pillow-shaped body. Thus, the blocky particles contained in the dust from the intelligent vibration main separation bed separation space can be buffered and fall in the pillow body to be accumulated in the pillow body, the dust collector air inlet check blind plate 8-3 is arranged on the side part of the pillow body, the dust collector air inlet check blind plate 8-3 is detachably arranged on the side surface of the pillow body, and the accumulated blocky particles can be cleaned by detaching the dust collector air inlet check blind plate 8-3. As shown in fig. 11, the air inlet pipe of the dust removing system of the multi-air source air supply energy-saving coal dry separation system comprises a dust remover air inlet transverse pipe 8-1 and a dust remover air inlet connecting square pipe 8-2, wherein the dust remover air inlet transverse pipe 8-1 forms a main body part of a pillow body, and the dust remover air inlet connecting square pipe 8-2 is connected between the dust remover air inlet transverse pipe 8-1 and a full bag dust remover 10.
The blast separation schematic diagram of the multi-wind source air supply energy-saving coal dry separation system is shown in fig. 12, wherein a blast passage is arranged below the intelligent vibration main separation bed, and the blast passage is preferably adjacent to a separated material discharge opening. Thus, the on-site power layout is convenient to reasonably set, and the utilization rate of the on-site space is improved. Further, at least two paths of wind sources are used in the invention, so that the wind supply condition of each wind path can be respectively adjusted, and further, the wind supply according to the requirement is realized. And according to the wind path as shown in fig. 12, the wind resistance of the wind inlet is very small, and the wind utilization efficiency is improved.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The super energy-saving coal dry separation system is characterized by comprising a raw coal feeding part, an air supply part, a separation part and a dust removal part, wherein the raw coal feeding part comprises a product conveyor, a buffer bin and an intelligent conveying device, the separation part comprises a host bracket, an intelligent vibration main separation bed, a host hanging and discharging device, the air supply part comprises an intelligent air regulation system consisting of a left main fan and a right main fan, the dust removal part comprises an intelligent air regulation dust removal system, and the intelligent air regulation system is provided with at least two air sources;
the left main fan is connected to a left air distributor through a left main fan air valve, and the left air distributor blows sorting air into the first component sorting chamber; the right main fan is connected to a right air distributor through a right main fan air valve, and the right air distributor blows sorting air into the second component sorting chamber; a left main fan is sent to an air duct of a left air distributor through a left main fan air valve, a left overhaul observation window is arranged, and the left overhaul observation window is arranged between the left main fan air valve and the left air distributor;
more than 6 air chambers are arranged below a main selection bed in the intelligent vibration main selection bed, and air sources are distributed according to the separation parameters required by each air chamber; the intelligent main separation bed device is hung on the host bracket through a host, and comprises a main separation bed, and the discharging device is a receiving chute positioned at the lower part of the intelligent main separation bed device;
the intelligent vibration main separation bed panel is distributed with separation air holes, and the diameter of the separation air holes close to the separation upper frame of the intelligent vibration main separation bed is gradually larger than that of the separation air holes close to the separation lower frame of the intelligent vibration main separation bed; the separation air hole and the intelligent vibration main separation bed panel are obliquely arranged, namely the separation air hole and the intelligent vibration main separation bed panel are not in a vertical arrangement, the air direction of the intelligent vibration main separation bed panel before passing through the bed panel is vertically incident with the intelligent vibration main separation bed panel, namely the separation air flow vertically enters the intelligent vibration main separation bed panel, and the separation air flow after passing through the separation air hole obliquely exits from the bed panel to separate coal materials; the separation plates of the bed plate are arranged between the separation air holes at intervals and used for adjusting the intervals of the air separation air holes;
the intelligent wind-adjusting dust-removing system comprises a dust-removing pipeline, a full-cloth bag dust remover and a cloth-bag induced draft fan, wherein a full-closed dust hood arranged at the upper part of the sorting part conveys dust generated by the sorting part to an air inlet of the dust remover through the dust-removing pipeline, miscellaneous or dust-containing gas entering the full-cloth bag dust remover through the air inlet of the dust remover is connected with an air inlet pipeline of a left main fan and an air inlet pipeline of a right main fan, the air inlet pipeline of the left main fan conveys the gas purified by the full-cloth-bag dust remover back to the left main fan, and the air inlet pipeline of the right main fan conveys the gas purified by the full-cloth-bag dust remover back to the right main fan;
the coal dry separation system adopts an intelligent vibrating main separation bed surface with a pentagon shape and a triangular side, the gangue moving direction advances along the transverse direction of the intelligent vibrating main separation bed, and the clean coal moving direction advances along the longitudinal direction of the intelligent vibrating main separation bed; the length of the sorting lower frame of the part of the intelligent vibrating main separation bed which is perpendicular to the feeding frame of the intelligent vibrating main separation bed and parallel to the sorting upper frame of the intelligent vibrating main separation bed is a3, the length of the sorting lower frame of the rest of the intelligent vibrating main separation beds is a4, the proportion of the length is set according to the sorting amount of the clean coal and the distinguishing degree of the clean coal, and the folding line length ratio of the sorting lower frame of the intelligent vibrating main separation bed is adjusted according to the needs of users; setting the length a5 of the gangue discharging frame of the intelligent vibration main selecting bed according to the gangue moving speed and the drying speed of the selected coal; the intelligent vibration main separation bed feeding frame is divided into a material inlet part and a clean coal separation side, the length of the material inlet part is a1, the length of the clean coal separation side is a2, and the proportion between a1 and a2 of the intelligent vibration main separation bed feeding frame is set according to the amount of coal transported to the vibration separation part in unit time; setting an intelligent vibrating main selection bed upper frame at a waste rock overflow port, wherein the length of the waste rock overflow port is a6, and the ratio between the length a6 and the length a7 of the rest part of the intelligent vibrating main selection bed upper frame is set according to the waste rock amount;
a plurality of sorting gradually-raised bars b1, b2, b3, … … and bn … … are arranged on the intelligent vibration main selection bed; the sorting gradually-rising lattice bars are paved on the intelligent vibration main selection bed, and form a certain sorting included angle N with the feeding frame of the intelligent vibration main selection bed, wherein the sorting included angle N is an acute angle; the high points b12, b22, b32, … … and bn2 … … of each gradually-raised lattice bar form an oblique line, the oblique connecting line of each high point and the upper frame of the intelligent vibration main selection bed form a certain material pushing angle M, and the low points b11, b21, b31, … … and bn1 … … of each gradually-raised lattice bar are respectively connected with the feeding frame of the intelligent vibration main selection bed and the sorting lower frame of the intelligent vibration main selection bed; the gradually-raised bars are fixed on the bed panel, and the high point of each gradually-raised bar is close to the intelligent vibration main selection bed backboard 41; the height of the high points of the progressively higher bars is greater than the height of the low points of the progressively higher bars.
2. The multi-wind-source wind-supply super energy-saving coal dry separation system according to claim 1, wherein a right overhaul observation window is arranged on an air duct of the right main fan which is sent to the right wind separator through a right main fan air valve.
3. The multi-air source air supply super energy-saving coal dry separation system according to claim 2, wherein the differential air supply requirements are realized according to different air volumes required by all parts of a main selection bed in the intelligent vibration main selection bed.
4. The super energy-saving dry coal separation system with multiple air sources for air supply according to claim 3, wherein the dust removing part further comprises a cloth bag induced draft fan, the cloth bag induced draft fan is connected with an induced draft fan chimney and an induced draft pipeline, the induced draft pipeline introduces dust-containing gas into the whole cloth bag dust remover, and part of clean gas treated by the cloth bag dust remover is discharged into the atmosphere through the induced draft fan chimney.
5. The multi-wind-source wind-fed super energy-saving coal dry separation system of claim 2, wherein the right overhaul viewing window is disposed between the right main fan damper and the right wind separator.
6. The multi-wind-source air supply super energy-saving coal dry separation system according to claim 5, wherein a trapezoid-shaped frame is adopted in the discharging section of the clean coal; the intelligent vibration main selecting bed panel adopts a vertically arranged backboard to directly provide a longitudinal thrust for the coal materials in the sorting.
7. The super energy-saving dry coal separation system with multiple air supply sources according to claim 6, wherein a longitudinal angle monitor and a transverse angle monitor are installed on the separation bed body, the longitudinal angle monitor is used for monitoring the longitudinal vibration angle of the intelligent vibration main separation bed, and the transverse angle monitor is used for monitoring the transverse vibration angle of the intelligent vibration main separation bed.
8. The multi-wind-source air supply super energy-saving dry coal separation system according to claim 1, wherein the fully-closed dust hood is buckled on the separation part to realize fully-closed separation; the rapid access door is arranged on the side surface of the upper cover body of the sorting part, and maintenance equipment is operated daily through the rapid access door; a product chute is arranged below the intelligent vibrating main separation bed body and is divided into a clean coal discharge chute, a middling discharge chute and a gangue discharge chute according to different types of received materials; the four sides of the full-closed dust hood just correspond to the four sides of the main selection bed, and the two sides and the rear side of the full-closed dust hood are connected with the two sides and the rear side of the main selection bed by dust filtering cloth, so that no dust gas is emitted; a plurality of quick access doors are arranged in front of the fully-closed dust collection cover, and the main selection bed surface can be directly reached by opening the quick access doors; the top of the full-closed dust hood is provided with a pipeline hole connected with the full-bag dust collector, and the gas mixed with dust enters the full-bag dust collector along the pipeline through the pipeline hole for filtering and circulating.
9. The super energy-saving dry coal separation system with multiple air sources for air supply according to claim 8, wherein two sets of pipeline holes are arranged on the totally-enclosed dust collection cover, the two sets of pipeline holes are respectively connected to the full-bag dust collector, and an independent dust collection power system is arranged in each pipeline hole and used for adjusting dust collection power of each pipeline hole of the independent dust collection power system according to dust concentration difference in the upper space of the intelligent vibration main separation bed.
10. The multi-wind-source wind-fed super energy-saving coal dry separation system according to claim 9, wherein dust from the intelligent vibration main separation bed separation space of the pipeline holes sequentially passes through the dust collector air inlet to the full-bag dust collector through the dust collection pipeline; in the structure that dust enters the full-bag dust collector through the dust collector air inlet, the dust collector air inlet is provided with a pillow-shaped body for a dust buffer device, and the dust enters the full-bag dust collector after being buffered in the pillow-shaped body; the dust from the intelligent vibration main separation bed separation space is buffered, and falls down in the pillow body in a buffering way to be accumulated in the pillow body, a dust collector air inlet check blind plate is arranged on the side part of the pillow body, and the dust collector air inlet check blind plate is detachably arranged on the side surface of the pillow body, so that accumulated block-shaped particles are cleaned by detaching the dust collector air inlet check blind plate; the air inlet pipe of the dust removing system of the super energy-saving coal dry separation system with multiple air source air supply comprises a dust remover air inlet transverse pipe and a dust remover air inlet connecting square pipe, wherein the dust remover air inlet transverse pipe forms a main body part of the pillow body, and the dust remover air inlet connecting square pipe is connected between the dust remover air inlet transverse pipe and the full-cloth bag dust remover.
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Address after: 063301 Daodi Town, Lunan District, Tangshan City, Hebei Province Applicant after: Tangshan Shenzhou Machinery Group Co.,Ltd. Applicant after: State energy group Xinjiang Energy Co.,Ltd. Applicant after: CHINA University OF MINING AND TECHNOLOGY Address before: 063011 Tangshan Shenzhou Machinery Co., Ltd., sanjiaodinan, Daodi Town, Lunan District, Tangshan City, Hebei Province Applicant before: TANGSHAN SHENZHOU MANUFACTURING Co.,Ltd. Applicant before: State energy group Xinjiang Energy Co.,Ltd. Applicant before: CHINA University OF MINING AND TECHNOLOGY |
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