CN113145458A - Energy-saving dry coal dressing system - Google Patents
Energy-saving dry coal dressing system Download PDFInfo
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- CN113145458A CN113145458A CN202110343823.4A CN202110343823A CN113145458A CN 113145458 A CN113145458 A CN 113145458A CN 202110343823 A CN202110343823 A CN 202110343823A CN 113145458 A CN113145458 A CN 113145458A
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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
- 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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- 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
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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
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Abstract
The invention provides a super energy-saving dry coal dressing system, which comprises a raw coal feeding part, an air supply part, a sorting 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 intelligent vibration main bed selection device adopts a pentagonal intelligent vibration main bed selection bed surface with three right-angle sides. The super energy-saving dry coal dressing system is beneficial to reducing the retention time of materials and accelerating the movement speed of the materials, and also improves the processing capacity of the unit time of the dressing bed. The equipment is energy-saving and environment-friendly, intelligent control is realized, the unit area treatment capacity is large, intelligent field adjustment is further realized, and the coal sorting effect is improved.
Description
Technical Field
The invention belongs to the technical field of coal sorting, particularly relates to a super energy-saving dry coal sorting system, and particularly relates to a super energy-saving dry coal sorting system with super processing capacity.
Background
Coal is a solid combustible mineral formed gradually by ancient plants buried underground and undergoing complex biochemical and physicochemical changes. Coal is known as black gold by people and is industrial food, which is one of main energy sources used in the human world since the eighteenth century, and since the twenty-first century, although the value of coal is not as high as before, coal is one of indispensable energy sources for production and life of human beings at present and in a long time in the future after all, the supply of coal is also related to the stability of the development of the industry of China and the aspect of the whole society, and the problem of the supply safety of coal is also the most important part in the energy safety of China.
Coal separation mainly comprises two directions of water washing and dry separation, the water washing basically adopts the processes of jigging, dense medium, flotation and the like, and the method has the advantages of mature process, high separation precision and high processing capacity. The disadvantages of large construction investment, long period, high production cost, large water resource consumption and waste, and the water consumption of washing 1 ton of raw coal is about 0.1m3In addition, low quality by-products such as coal slurry are also produced. The dry separation is a coal separation method which exists and develops slowly in the last two decades, has the advantages of no water, simple process, less investment and low production cost, and the main representative process is a wind power dry coal separation process. From the coal distribution region, the west accounts for 80.4% of the country, the middle accounts for 15.2% of the country, and the east accounts for 4.4% of the country. The west is the main coal distribution area of China and is just the dry and little water area, so the water and the coal are mixedCompared with washing, dry separation has wider requirements and prospects, and is widely popularized in China and all over the world in a very short period. The water content, ash content and sulfur content of coal are important factors influencing the quality of coal. To improve the quality of coal, the coal must be dewatered and sorted. With the development of coal upgrading technology, coal drying and dry separation processes are widely applied in the coal upgrading technology, and remarkable success is achieved.
However, the existing wind-force dry coal separation technology has the defects of poor separation precision, small processing capacity, high requirement on coal types and the like. In addition, after the screening of coal is realized, the screening device for the existing intelligent coal dry separator needs to crush coal particles with larger particles so as to meet the subsequent processing requirement and greatly reduce the working efficiency; moreover, 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 health of operators can be seriously affected when the operators work in the working environment for a long time. In addition, a large amount of energy is consumed in the process of treating the dust.
Therefore, the wind-force dry coal dressing process needs to be further improved and improved, so that the process is more suitable for being used for sorting in various occasions or mining areas.
Disclosure of Invention
Based on the problems in the prior art, the invention provides a super energy-saving dry coal separation system, which not only solves the technical problems in the prior art, but also improves the coal separation processing capacity and reduces the energy consumed in the separation process.
According to the technical scheme of the invention, the super energy-saving dry coal dressing system comprises a raw coal feeding part, an air supply part, a sorting 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 intelligent vibration main bed selection device adopts a pentagonal intelligent vibration main bed selection bed surface with three right-angle sides.
The movement direction of the gangue is pushed forwards along the transverse direction of the intelligent vibration main separation bed, and the movement direction of the clean coal is pushed forwards along the longitudinal direction of the intelligent vibration main separation bed; the discharging section of the clean coal adopts a trapezoidal frame. Coal materials are intelligently delivered to a material inlet of the intelligent vibration main selection bed through the intelligent conveying device and are conveyed to the bed body of the intelligent vibration main selection bed through the material inlet.
Preferably, a plurality of sorting gradually-high grid bars b1, b2, b3, … … and bn … … are arranged on the intelligent vibration main sorting bed; select separately gradually high check strip and lay on intelligent vibration main selection bed, select separately gradually high check strip and intelligent vibration main selection bed pan feeding frame and be certain separation contained angle N, select separately contained angle N and be the acute angle.
Preferably, the sorting lower frame of the intelligent vibration main sorting bed is in a broken line shape, namely, part of the sorting lower frame of the intelligent vibration main sorting bed is perpendicular to the feeding frame of the intelligent vibration main sorting bed and is parallel to the sorting upper frame of the intelligent vibration main sorting bed, and part of the sorting lower frame of the intelligent vibration main sorting bed is folded upwards in the clean coal sorting area and forms an obtuse angle with the gangue discharge frame of the intelligent vibration main sorting bed.
More preferably, the length of the sorting lower frame of the part of the intelligent vibration main sorting bed, which is perpendicular to the feeding frame of the intelligent vibration main sorting bed and parallel to the sorting upper frame of the intelligent vibration main sorting bed, is a3, the length of the sorting lower frames of the rest of the intelligent vibration main sorting beds is a4, and the ratio of the lengths is set according to the sorting amount of clean coal and the discrimination degree of the clean coal.
More preferably, a plurality of gradually-high sorting grids are arranged in parallel in sequence, a high point of each gradually-high sorting grid forms an oblique connecting line, each high point oblique connecting line and the upper frame of the intelligent vibration main sorting bed form a certain material propelling angle M, and a low point of each gradually-high sorting grid is connected with the feeding frame of the intelligent vibration main sorting bed and the lower sorting frame of the intelligent vibration main sorting bed respectively.
Furthermore, the sorting air holes of the bed panel of the intelligent vibration main sorting bed are inclined holes.
Furthermore, the back plate is perpendicular to the intelligent vibration main selection bed panel, and the back plate is arranged on the upper sorting frame of the intelligent vibration main selection bed panel and fixedly connected together.
In addition, install longitudinal angle monitor and horizontal angle monitor on the main selection bed body, longitudinal angle monitor is used for monitoring the longitudinal vibration angle of intelligence vibration main selection bed, and horizontal angle monitor is used for monitoring the horizontal vibration angle of intelligence vibration main selection bed.
The super energy-saving dry coal dressing system provided by the invention has the advantages that the right-angle back plate, the inclined holes of the main dressing bed surface, the gradually-high lattice bars and the opposite main dressing bed surface are arranged, the retention time of materials is favorably shortened, the movement speed of the materials is accelerated, and the processing capacity of the main dressing bed unit time is improved. The equipment is energy-saving and environment-friendly, intelligent control is realized, the unit area treatment capacity is large, intelligent field adjustment is further realized, and the coal sorting effect is improved.
Drawings
FIG. 1 is a schematic structural diagram of a super energy-saving dry coal preparation system according to the present invention;
FIG. 2 is a top view of the intelligent vibratory primary cot of FIG. 1;
FIG. 3 is a schematic view of a bed surface through hole in the intelligent vibration main sorting bed of FIG. 2;
FIG. 4 is a schematic longitudinal side view of the intelligent vibratory primary cot of FIG. 1;
FIG. 5 is a schematic longitudinal side view of an intelligent vibratory primary sorting bed with mounted sorting bars;
FIG. 6 is a schematic view of the vibration direction of the backplate shown in FIG. 4;
FIG. 7 is a sectional view of a coal dry separation system with a main separation bed body of a product chute;
FIG. 8 is an external view of a super energy-saving dry coal preparation system with a quick access door;
FIG. 9 is a schematic view of a loading conveyor system based on FIG. 8;
FIG. 10 is a partial view of a dust removal system of the super energy-saving dry coal preparation system;
FIG. 11 is a schematic cross-sectional view of a dedusting air duct;
FIG. 12 is a schematic view of blast separation of a super energy-saving dry coal separation system.
The reference numbers in the figures are as follows: 1. a left main blower; 2. a left main blower air valve; 3. a left air distributor; 4. a product grading chute; 5. a host support; 6. a right air distributor; 7. a right main blower air valve; 8. a right main blower; 9. an air inlet of the dust remover; 10. a full bag dust collector; 11. a fully-closed dust collecting hood; 12. a dust removal pipeline; 13. a left main fan air inlet pipeline; 14. a right main fan air inlet pipeline; 15. a main selection bed; 16. hanging a host; 17. an air inducing duct; 18. a cloth bag induced draft fan; 19. a chimney of the induced draft fan; 21. a material inlet; 22. a clean coal discharge chute; 23. A middling discharging chute; 24. a gangue discharge chute; 25. a waste rock discharge cylinder; 26. a gangue overflow outlet; 28. a bed panel with sorting air holes; 701. a left inspection observation window; 702. a right overhaul observation window; 91. a belt scale; 92. a belt conveyor; 1501. a longitudinal angle monitor; 1502. a lateral angle monitor; 1101. a quick access door; 1102. dust filtration cloth; 8-1, a horizontal air inlet pipe of the dust remover; 8-2, connecting an air inlet of the dust remover with a square pipe; 8-3, a dust remover air inlet inspection blind plate; 31. sorting air holes; 32. a bed panel; 41. a back plate; gradually-high lattice bars b1, b2, b3, … … and bn … ….
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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, not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the patent of the invention without any inventive work belong to the protection scope of the patent of the invention.
The invention provides a super energy-saving dry coal dressing system, which has the following terminology definition: "super energy savings" refers to a 30% reduction in energy consumed by the present invention in sorting a unit weight of raw coal compared to a conventional wedge-shaped primary bed, for the same primary bed area used for sorting.
The invention is further explained with reference to the attached figure 1, and figure 1 is a schematic structural diagram of the super energy-saving dry coal preparation system according to the invention. As shown in fig. 1, the super energy-saving dry coal 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 host bracket, an intelligent vibration main bed selection device, a host hanging and discharging device, the air supply part comprises an intelligent air regulation system formed by a left main fan and a right main fan, and the dust removal part comprises an intelligent air regulation and dust removal system.
Further, raw coal (including but not limited to coal products or coal materials) is conveyed into a buffer bin by a raw coal product conveyor to wait for sorting, and the raw coal in the buffer bin is intelligently distributed to a sorting part through an intelligent conveying device to be sorted. The sorting part comprises a host bracket 5, an intelligent vibration main sorting bed device, a host hanger 16 and a discharging device, wherein the intelligent vibration main sorting bed device is arranged on the host bracket 5 through the host hanger 16, the intelligent vibration main sorting bed device comprises a main sorting bed 15, and the discharging device is a material receiving chute positioned at the lower part of the intelligent vibration main sorting bed device. The receiving chute is preferably a product chute 4.
The air supply part comprises an intelligent air adjusting system consisting of 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 separation air into a first group of separation chambers; the right main blower 8 is connected to the right air distributor 6 via a right main blower air valve 7, and the right air distributor 6 blows the separation air into the second group of separation chambers.
The dust removing part comprises an intelligent air adjusting dust removing system, the intelligent air adjusting dust removing system comprises a dust removing pipeline 12, a full-bag dust remover 10 and a bag-type induced draft fan 18, a fully-closed dust collecting cover 11 arranged at the upper part of the separating part conveys dust generated by the separating part to a dust remover air inlet 9 through the dust removing pipeline 12, gas containing impurities or dust through the dust remover air inlet 9 enters the full-bag dust remover 10, the full-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 the gas purified through the full-bag dust remover 10 back to the left main fan 1, and the air inlet pipeline 14 of the right main fan 8 conveys the gas purified through the full-bag dust remover 10 back to the right main fan 8. The dust removal part further comprises a bag induced draft fan 18, the 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 bag-type dust remover 10, and part of clean gas treated by the bag-type dust remover 10 is discharged into the atmosphere through the induced draft fan chimney 19.
Further, a left inspection window 701 is preferably provided in the duct through which the left main blower 1 is fed into the left air distributor 3 through the left main blower air valve 2. Similarly, a right inspection window 702 is preferably provided on the duct of the right air splitter 6 through the right main blower 8 via the right main blower air valve 7. More preferably, a left service viewing window 701 is provided between the left main blower damper 2 and the left air splitter 3 and a right service viewing window 702 is provided between the right main blower damper 7 and the right air splitter 6.
The super energy-saving dry coal preparation 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 sorting process, the differentiated air supply requirements are realized according to different air quantities required by each part of the main sorting bed 15. Compared with the existing dry separator which only has one main fan, the air quantity and the air pressure of an air source are single and unadjustable, the main separation bed of the super energy-saving dry coal separation system has a large area, the number of the air chambers is more than ten, and the air quantity and the air pressure required by each air chamber also have different parameters according to different corresponding positions under the main separation bed; furthermore, the technical problem that the air pressure is still the same parameter even if the air quantity is adjustable because a main air source is arranged below the oversized main selection bed surface is solved. A multi-wind source system is adopted, so that the adjustment of the sorting parameters of the dry separator is realized; the air supply quantity of the air sources can be adjusted at any time, and the air sources can be distributed 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 environmental protection perspective, the energy and the electricity are saved, and unnecessary waste is avoided.
Furthermore, the super energy-saving dry coal separation system adopts a full-bag dust collector, and abandons the scheme of double configuration of cyclone dust collection and bag dust collection adopted by the original coal dry separation system. The original coal dry separator dust remover system is provided with a cyclone dust remover and a bag dust remover, the cyclone dust remover has large processing air volume and small occupied area, the processed air is used as circulating air for continuous use, the dust removing path trend is that a main fan leads the air out of an equipment dust hood and enters the cyclone dust remover through a pipeline, large particle dust is removed in the cyclone dust remover, then the large particle dust enters the main fan, the main fan feeds the air chamber, the air chamber feeds the main separation bed, the main separation bed enters the dust hood and is sucked away by the main fan again, and the process is repeated and circulated, so that the air path circulation of the dry separator equipment is ensured; the bag-type dust collector also draws air from the dust hood, so that negative pressure is generated on a balanced air path, and dust is prevented from overflowing. However, the cyclone dust collector can only remove large-particle dust in the air path, and the fine dust circulates in a closed circuit along with the wind, and more dust is discharged after the dry separator runs for a long time. The full-bag dust collector preferably adopts an intelligent air-adjusting dust-removing system.
The super energy-saving dry coal separation system adopts the full-bag dust collector, all the circulating air paths pass through the bag dust collector, the dust collection efficiency of the bag dust collector can reach more than 99 percent, 99 percent of dust in the air paths can be removed, the clean air 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 can be saved.
As shown in fig. 2, the super energy-saving dry coal separation system adopts a pentagonal intelligent vibration main separation bed surface with three right-angled sides, the movement direction of gangue is pushed forward along the transverse direction of the intelligent vibration main separation bed, and the movement direction of clean coal is pushed forward along the longitudinal direction of the intelligent vibration main separation bed. The discharging section of the clean coal adopts a trapezoidal frame. Coal materials are intelligently distributed to a material inlet 21 of the intelligent vibration main selection bed through an intelligent conveying device and conveyed to a bed body of the intelligent vibration main selection bed through the material inlet 21, and a plurality of separation gradually-high lattice bars b1, b2, b3, … … and bn … … are arranged on the intelligent vibration main selection bed; select separately gradually high check strip and lay on intelligent vibration main selection bed, select separately gradually high check strip and intelligent vibration main selection bed pan feeding frame and be certain separation contained angle N, wherein select separately contained angle N and be the acute angle, set up the size of this separation contained angle according to the coal composition or the moisture of equipment fixing mining area, and then realized selecting separately the index according to local conditions, furthest promotes the sorting precision. The material inlet 21 is arranged at the edge of the feeding frame of the intelligent vibration main separation bed, preferably, the highest point of the feeding frame of the intelligent vibration main separation bed is overlapped with the highest point of the material inlet 21, so that coal materials are vibrated and propelled to the waste rock discharging frame of the intelligent vibration main separation bed along the upper frame of the intelligent vibration main separation bed, a certain material propelling angle M is formed between each high point oblique connecting line of a plurality of separation gradually-high lattice bars b1, b2, b3, … … and bn … … and the upper frame of the intelligent vibration main separation bed, the material propelling angle M is set according to the impurity content of the waste rocks of coal carbons separated on site, and the separation degree of clean coal, medium coal and waste rocks is improved as much as possible. A gangue discharge channel is arranged close to the gangue discharge frame of the intelligent vibration main separation bed, the separated gangue is discharged from a gangue discharge groove 24 along the gangue discharge channel, a gangue overflow outlet 26 is arranged at the top end of the gangue discharge frame of the intelligent vibration main separation bed, and the gangue overflow outlet 26 is used for quickly discharging large gangue or accumulated gangue; in addition, compared with the existing dry separation system, the coal separation amount of the super energy-saving dry coal separation system in unit time is higher than 30%, and a large amount of gangue is generated in a short time, so that a gangue discharge cylinder 25 is additionally arranged on the side surface of a gangue discharge frame of the intelligent vibration main separation bed, and the gangue which is not discharged through a gangue discharge chute 24 and a gangue overflow outlet 26 can be discharged through the gangue discharge cylinder 25. The lower separation frame of the intelligent vibration main separation bed is respectively and sequentially provided with a clean coal discharging groove 22, a middlings discharging groove 23 and a gangue discharging groove 24, and the separation side length occupied by the clean coal discharging groove 22, the middlings discharging groove 23, the gangue discharging groove 24 and the like is determined according to the separation area of the bed body of the intelligent vibration main separation bed, the set vibration frequency of vibration separation and the impurity content and water content of coal. The sorting lower frame of the intelligent vibration main separation bed is in a broken line shape, namely, part of the sorting lower frame of the intelligent vibration main separation bed is perpendicular to the feeding frame of the intelligent vibration main separation bed and is parallel to the sorting upper frame of the intelligent vibration main separation bed, and part of the sorting lower frame of the intelligent vibration main separation bed is folded upwards in the clean coal sorting area and forms an obtuse angle with the gangue discharge frame of the intelligent vibration main separation bed, so that the travel of gangue and clean coal is sequentially shortened, and the treatment capacity is increased.
The super energy-saving dry coal separation system adopts a pentagonal intelligent vibration main separation bed surface with three right-angle sides, firstly, the transverse distance of a waste rock discharge end is shortened, and the retention time of the waste rock on the main separation bed is reduced; secondly, the longitudinal distance of the clean coal discharge end is shortened, and the distance of an air chamber is transversely prolonged from the foremost end of the main separation bed to the gangue end, so that the area of the clean coal discharge end can be basically kept unchanged, and the changes are all to reduce the retention time of materials on the main separation bed. The lower corner is modified into a broken line trapezoid, thereby shortening the travel of gangue and clean coal and increasing the treatment capacity.
As further shown in fig. 2, the length of the sorting lower frame of the part of the intelligent vibration main sorting bed, which is perpendicular to the feeding frame of the intelligent vibration main sorting bed and parallel to the sorting upper frame of the intelligent vibration main sorting bed, is a3, the length of the sorting lower frame of the other intelligent vibration main sorting beds is a4, the length ratio is set according to the sorting amount of clean coal and the sorting degree of clean coal, for example, sorting coal into super clean coal, middlings, miscellaneous middlings, gangue and the like, and at this time, the length ratio of the broken line of the sorting lower frame of the intelligent vibration main sorting bed is adjusted according to the user's needs; similarly, the length a5 of the frame of the gangue discharge of the intelligent vibration main separation bed is set according to the gangue moving speed and the drying speed of the separated coal; the intelligent vibration main sorting bed feeding frame is divided into a material inlet 21 part and a clean coal sorting side, the length of the material inlet 21 part is a1, the length of the clean coal sorting side is a2, and the proportion between a1 and a2 of the intelligent vibration main sorting bed feeding frame is set according to the amount of coal conveyed to the vibration sorting part in unit time. Arranging an upper frame of the intelligent vibration main separation bed at the gangue discharge port 26, wherein the length of the gangue discharge port 26 is a6, and the proportion between the length a6 and the length a7 of the rest part of the upper frame of the intelligent vibration main separation bed is set according to the amount of gangue; alternatively, the gangue discharge 26 may be closed for situations where the amount of gangue discharged is relatively small.
Furthermore, a plurality of gradually-high sorting grid strips b1, b2, b3, … … and bn … … are sequentially arranged in parallel, high points b12, b22, b32, … … and bn2 … … of each gradually-high grid strip form an oblique line (connecting line), each high point oblique connecting line and the upper frame of the intelligent vibration main sorting bed form a certain material propelling angle M, and low points b11, b21, b31, … … and bn1 … … of each gradually-high grid strip are respectively connected with the feeding frame of the intelligent vibration main sorting bed and the sorting lower frame of the intelligent vibration main sorting bed. As shown in fig. 5, the gradually-high bars are fixed on the bed panel, and the high point of each gradually-high bar is close to the intelligent vibration main selection bed back plate 41. The height of the high points of the gradually-high grating is greater than that of the low points of the gradually-high grating.
Compared with the prior bed panel lattice bars with equal height, the lattice bars of the intelligent vibration main selection bed have the function that materials with high density can move upwards along the lattice bars when the main selection bed works, so that the materials form an obvious boundary zone for separating the materials with high density and low density on the main selection bed. The main sorting bed of the invention has large material passing amount, while the prior grid bars have the problems that the height is far smaller than the thickness of the material of the bed layer and the movement track of the material with large density is unstable, and the prior grid bars are not suitable for sorting the material with large processing amount. The gradually-high lattice bars shown in figure 5 are adopted, and the height of the lattice bars from the back plate to the discharging side is gradually reduced, so that the movement track of high-density materials is kept stable during diffusion impact of the fed materials, and the rapid discharging of the low-density materials at the discharging end is facilitated.
As shown in fig. 2 and 3, the separation air holes 31 are distributed on the panel of the intelligent vibration main separation bed, and the diameter of the separation air hole close to the upper separation frame of the intelligent vibration main separation bed is gradually larger than that of the separation air hole close to the lower separation frame of the intelligent vibration main separation bed. Specifically, referring to fig. 3, the separation air hole 31 and the intelligent vibration main selection bed panel are arranged in an inclined manner, that is, the separation air hole 31 and the intelligent vibration main selection bed panel are not arranged vertically, the air direction of the intelligent vibration main selection bed panel passing through the bed panel is vertically incident to the intelligent vibration main selection bed panel, that is, the separation air flow is vertically incident to the intelligent vibration main selection bed panel, and the separation air flow passing through the separation air hole 31 is inclined out from the bed panel and is emitted to the separation coal material. Correspondingly, the partition plates of the bed panel are arranged between the separation air holes 31 at intervals and used for adjusting the distance between the separation air holes 31. The intelligent vibration main separation bed panel is preferably a bed panel 28 with separation air holes.
The existing traditional bed surface sorting air holes are vertical through holes, and air is blown out vertically through the small holes; the sorting air holes of the bed panel of the intelligent vibration main sorting bed are changed into inclined holes, and the inclined direction is the discharge end, so that when air flow is blown out of the sorting air holes, an acting force in the inclined direction and the discharge direction is generated, and the acting force can accelerate the movement speed of materials on the bed surface. Preferably, only the first bed surface hole at the feeding end of the bed panel of the intelligent vibration main separation bed is changed into an inclined hole, the inclined direction is the discharging end, and the separation air holes of other bed panels of the intelligent vibration main separation bed adopt vertical separation air holes.
Fig. 4 is a schematic longitudinal side view of the intelligent vibration main sorting bed of fig. 1, and fig. 5 is a schematic longitudinal side view of the intelligent vibration main sorting bed with the sorting grid bars installed. As shown in fig. 4 and 5, the super energy-saving dry coal preparation system adopts a back plate structure, the back plate is perpendicular to the panel of the intelligent vibration main bed, and the back plate 41 is arranged on the upper separation frame of the panel of the intelligent vibration main bed and is fixedly connected together. Optionally, the back plate 41 is detachably connected to the sorting upper rim of the intelligent vibration main sorting bed panel 32. As shown in fig. 6, the vibration direction of the back plate is parallel to the longitudinal thrust applied to the coal material, that is, the coal material is subjected to downward longitudinal thrust under the dual actions of the vibration of the bed surface and the back plate. The back plate and the ground form a certain included angle alpha.
The bed panel of the intelligent vibration main sorting bed adopts the vertically arranged back panel, and directly provides a longitudinal thrust for coal materials in sorting. Compared with the traditional main sorting bed, the angle between the back plate and the main sorting bed surface is an acute angle of 60-70 degrees, and the existing back plate has the function of turning materials on the main sorting bed based on the sorting principle of a dry sorting machine; the angle of the back plate is changed into vertical 90 degrees, so that the original turning acting force is converted into a thrust force for forward movement of the materials in the sorting process of the dry separator, and the movement speed of the materials on the bed surface is accelerated.
Furthermore, as shown in fig. 4, a longitudinal angle monitor 1501 and a transverse angle monitor 1502 are installed on the main bed selector, the longitudinal angle monitor 1501 is used for monitoring the longitudinal vibration angle of the intelligent vibration main bed selector, and the transverse angle monitor 1502 is used for monitoring the transverse vibration angle of the intelligent vibration main bed selector; the angle parameters of the main separation bed body are displayed in real time, the automatic adjustment of the main separation bed body is completed by more effectively matching production, and the intellectualization of the super energy-saving dry coal separation system is greatly improved.
As shown in fig. 7 and 8, the external view of the super energy-saving dry coal separation system with the quick access door is shown, the super energy-saving dry coal separation system further comprises a fully-closed dust hood 11 and a quick access door 1101, and the fully-closed dust hood 11 is buckled on the separation part to realize fully-closed separation; the quick access door 1101 is arranged on the side face of the upper cover body of the sorting part, and the maintenance and inspection equipment is operated through the quick access door 1101 on a daily basis. A product chute 4 is arranged below the intelligent vibration main separation bed body, and the product chute 4 is divided into a clean coal discharging chute 22, a middlings discharging chute 23 and a gangue discharging chute 24 according to different types of received materials. Furthermore, four sides of the fully-closed dust hood 11 just correspond to four sides of the main selection bed 15, and two sides and the rear side of the fully-closed dust hood are connected with two sides and the rear side of the main selection bed 15 through dust filtering cloth 1102, so that no dust gas is emitted outside. The front of the fully-closed dust hood 11 is provided with a plurality of quick access doors 1101, the quick access doors 1101 can be opened to directly reach the bed surface of the main separation bed 15, the maintenance work can be conveniently carried out, in addition, the top of the fully-closed dust hood 11 is provided with a pipeline hole connected with the fully-bag dust collector 10, and gas mixed with dust can enter the fully-bag dust collector 10 through the pipeline hole to be filtered and circulated.
Furthermore, two sets of pipeline holes are arranged on the fully-closed dust collecting cover 11, the two sets of pipeline holes are respectively connected to the full-bag dust collector 10, 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.
As shown in fig. 9, an intelligent material transporting system is additionally installed on the basis of fig. 8, a belt weigher 91 is arranged below a belt conveyor 92 for conveying coal materials by power, and the belt weigher 91 is preferably an intelligent belt weigher with a wireless transmission function, and can transmit the real-time conveying amount of the coal materials to a central control platform of a central control room, so that the material data analysis and control of coal sorting are realized in real time on the central control platform of the central control room.
As shown in fig. 1, the dust from the sorting space of the intelligent vibration main sorting bed of the pipeline hole sequentially enters the full-bag dust collector 10 through the dust collector air inlet 9 via the dust collecting pipeline 12. As shown in fig. 10, in the structure in which the dust enters the full bag dust collector 10 through the dust collector air inlet 9, the dust collector air inlet 9 is provided with a dust buffering device, preferably a pillow-shaped body for the dust buffering device, and the dust enters the full bag dust collector 10 after being buffered in the pillow-shaped body. Therefore, the blocky particles contained in the dust from the sorting space of the intelligent vibration main sorting bed can be buffered and fall in the pillow-shaped body and are gathered in the pillow-shaped body, the side part of the pillow-shaped body is provided with a dust collector air inlet inspection blind plate 8-3, the dust collector air inlet inspection blind plate 8-3 is detachably arranged on the side surface of the pillow-shaped body, and the gathered blocky particles can be cleaned by detaching the dust collector air inlet inspection blind plate 8-3. As shown in fig. 11, the air inlet pipe of the dust removal system of the super energy-saving dry coal separation system comprises a horizontal air inlet pipe 8-1 of the dust remover and a square air inlet connecting pipe 8-2 of the dust remover, the horizontal air inlet pipe 8-1 of the dust remover forms the main body of the pillow body, and the square air inlet connecting pipe 8-2 of the dust remover is connected between the horizontal air inlet pipe 8-1 of the dust remover and the full-bag dust remover 10.
Fig. 12 is a schematic view of blast separation of a super energy-saving dry coal separation system, wherein a blast passage is arranged below an intelligent vibration main separation bed, and an air passage is preferably adjacent to a separated material discharge opening. Therefore, the field power layout is conveniently and reasonably arranged, and the utilization rate of the field space is improved. Furthermore, at least two wind sources are used in the invention, so that the wind supply condition of each wind path can be adjusted respectively, and further the wind supply according to requirements is realized. And according to the wind path that sets up as figure 12, its air inlet windage is very little, has promoted the efficiency with wind.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A super energy-saving dry coal dressing system is characterized by comprising a raw coal feeding part, an air supply part, a sorting 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 intelligent vibration main bed selection device adopts a pentagonal intelligent vibration main bed selection bed surface with three right-angle sides.
2. The ultra energy-saving dry coal preparation system according to claim 1, wherein the gangue moving direction is pushed forward along the transverse direction of the intelligent vibration main separation bed, and the clean coal moving direction is pushed forward along the longitudinal direction of the intelligent vibration main separation bed.
3. The super energy-saving dry coal preparation system according to claim 2, wherein the discharging section of the cleaned coal adopts a trapezoidal frame. Coal materials are intelligently delivered to a material inlet of the intelligent vibration main selection bed through the intelligent conveying device and are conveyed to the bed body of the intelligent vibration main selection bed through the material inlet.
4. The super energy-saving dry coal preparation system according to claim 3, characterized in that a plurality of separation gradually-high grid bars b1, b2, b3, … …, bn … … are arranged on the intelligent vibration main separation bed; select separately gradually high check strip and lay on intelligent vibration main selection bed, select separately gradually high check strip and intelligent vibration main selection bed pan feeding frame and be certain separation contained angle N, select separately contained angle N and be the acute angle.
5. The super energy-saving dry coal dressing system according to claim 2, wherein the lower sorting frame of the intelligent vibration main sorting bed is in a zigzag shape, i.e. a part of the lower sorting frame of the intelligent vibration main sorting bed is perpendicular to the feeding frame of the intelligent vibration main sorting bed and parallel to the upper sorting frame of the intelligent vibration main sorting bed, and a part of the lower sorting frame of the intelligent vibration main sorting bed is folded upwards in the clean coal sorting area and forms an obtuse angle with the frame of the intelligent vibration main sorting bed for discharging gangue.
6. The super energy-saving dry coal dressing system according to claim 5, wherein the part of the intelligent vibration main dressing lower frames perpendicular to the intelligent vibration main dressing feeding frame and parallel to the intelligent vibration main dressing upper frame is a3 in length, and the rest of the intelligent vibration main dressing lower frames are a4 in length, the ratio of the lengths being set according to the dressing amount of clean coal and the classification degree of the clean coal.
7. The super energy-saving dry coal preparation system according to claim 1, wherein a plurality of gradually-high separation bars are arranged in parallel in sequence, the high point of each gradually-high separation bar forms an oblique connecting line, each high point oblique connecting line and the upper frame of the intelligent vibration main separation bed form a certain material propelling angle M, and the low point of each gradually-high separation bar is respectively connected with the feeding frame of the intelligent vibration main separation bed and the separation lower frame of the intelligent vibration main separation bed.
8. The super energy-saving dry coal preparation system according to claim 1, wherein the intelligent vibration main bed panel separation air hole is an inclined hole.
9. The super energy-saving dry coal preparation system according to claim 1, wherein the back plate is perpendicular to the intelligent vibration main bed panel, and the back plate is arranged on the upper separation frame of the intelligent vibration main bed panel and fixedly connected together.
10. The super energy-saving dry coal preparation system according to claim 1, wherein a longitudinal angle monitor and a transverse angle monitor are mounted on the main 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.
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