CN109746105B - Grinding system - Google Patents
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- CN109746105B CN109746105B CN201910175532.1A CN201910175532A CN109746105B CN 109746105 B CN109746105 B CN 109746105B CN 201910175532 A CN201910175532 A CN 201910175532A CN 109746105 B CN109746105 B CN 109746105B
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- 238000000227 grinding Methods 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 149
- 238000007599 discharging Methods 0.000 claims abstract description 116
- 239000000843 powder Substances 0.000 claims abstract description 90
- 239000000428 dust Substances 0.000 claims abstract description 23
- 238000012545 processing Methods 0.000 claims abstract description 13
- 238000000498 ball milling Methods 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 239000006148 magnetic separator Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 14
- 230000001105 regulatory effect Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 7
- 239000000377 silicon dioxide Substances 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000011044 inertial separation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Disintegrating Or Milling (AREA)
Abstract
The invention relates to a grinding processing system, which comprises a fan, a ball mill, lifting equipment, a powder concentrator and a bag-type dust remover, wherein the fan comprises an air suction inlet and an air outlet; the powder concentrator can carry out three-stage separation on materials, and is provided with a main material inlet of the powder concentrator, a gas material inlet of the powder concentrator, a first-stage material blanking port, a second-stage material blanking port, a third-stage material blanking port and an exhaust port of the powder concentrator; the first discharge port is connected to lifting equipment through a discharging pipeline, the lifting equipment can convey materials to the main material inlet of the powder concentrator, and the gas material outlet of the ball mill is communicated with the gas material inlet of the powder concentrator; the air outlet of the bag-type dust collector is communicated with the air inlet of the air suction inlet through an air return pipe; the whole processing line is in closed cycle, the residual air quantity can be discharged by a bag-type dust remover, and dust is not leaked basically.
Description
Technical Field
The invention relates to a grinding processing system.
Background
At present, under the condition of high-speed development of industry in China, the glass and glass fiber products are more and more widely used, the main production raw material of glass fibers is silica powder, at present, the technology and equipment for producing silica in China basically have two main types, one type is a wet grinding method of a ball mill and the utilization of a flotation tank and an iron removal system for producing the silica powder, the grinding system has the advantages that the produced silica powder products can completely reach all the required technical targets, the defects are that accessory equipment is more, the integrity is lacked, the products need a certain time and a large area for airing, and especially, the tail sewage discharge is provided with fine silica powder to cause environmental pollution. The other is to produce the silica powder by a dry method, and the conventional crushing equipment such as cone crusher, impact crusher, hammer crusher, roller crusher and the like in China are used as main crushing equipment, and the crushed silica powder is basically screened and classified by a high-frequency vibrating screen.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a closed-cycle dry grinding processing system which can produce two-stage products and has a closed-cycle production mode, so that dust is basically not leaked in the production process, and the pollution degree is reduced to the minimum.
The technical scheme for solving the technical problems is as follows: the grinding processing system comprises a fan, a ball mill, lifting equipment, a powder concentrator and a bag-type dust remover, wherein the fan comprises an air suction inlet and an air outlet, the ball mill is provided with a coarse material feeding port, a ball mill air material outlet and a first discharge port, the air outlet is communicated with the coarse material feeding port through an air supply pipeline, and is also connected with the bag-type dust remover through an expanded air conveying pipeline and discharged into the atmosphere after dust removal by the bag-type dust remover;
the powder concentrator comprises an outer bin body and an inner bin body arranged in the outer bin body, wherein a three-level material discharging opening is formed in the lower portion of the outer bin body, a first-level material discharging opening is formed in the lower portion of the inner bin body, a powder concentrator gas inlet is formed in the bin wall of the inner bin body, a powder concentrator main material inlet and an air flow discharging opening are formed in the upper end of the inner bin body, and the first-level material discharging opening is communicated with the coarse material feeding opening through an auxiliary feeding pipeline;
the first discharge port is connected to the lifting equipment through a discharging pipeline, the lifting equipment can convey materials to the main material inlet of the powder selecting machine, and the gas material outlet of the ball mill is communicated with the gas material inlet of the powder selecting machine;
the upper part of the airflow discharge hole is provided with a first air guide sleeve, and the upper part of the first air guide sleeve is provided with a first conical separator; the upper part of the first air guide sleeve and the first conical separator are arranged in a main powder selecting chamber, a secondary material discharging opening is formed in the lower part of the main powder selecting chamber, an impeller is arranged on the upper part of the main powder selecting chamber, a second air guide sleeve is arranged below the impeller, a third air guide sleeve is arranged above the impeller and is communicated with the upper part of the main powder selecting chamber, the third air guide sleeve is communicated with an air inlet of the cyclone separator, a discharging opening of the cyclone separator is communicated with a tertiary material inlet in the upper part of the outer bin body, and the tertiary material is discharged through the tertiary material discharging opening; the air outlet of the cyclone separator is communicated with the air suction inlet of the fan, and the air outlet of the cyclone separator is the air outlet of the powder concentrator.
The beneficial effects of the invention are as follows: the grinding processing system is a closed-loop circulation grinding processing system, however, in the running process of the system, leakage points are always arranged, the system can suck external dust and air into the system at the leakage points, so that the rising residual air quantity is generated in the running process of the system, the air outlet of the fan is also connected with the bag-type dust collector through a rising residual air conveying pipeline, the rising residual air quantity of the system can be discharged by the bag-type dust collector, the dust is basically not leaked, and the pollution of the dust to the environment is reduced to the minimum;
the powder concentrator adopts three-stage separation, wherein the first stage is a coarse particle gravity sedimentation separation method, the second stage is an inertial separation method, and the third stage is a mechanical centrifugal sweeping method, so that the problem of difficulty in screening fine powder is solved, and the problem of splashing generated in the wind-spinning centrifugal sweeping process of large particle materials is also solved;
in addition, the fine powder with smaller particle size enters from the air inlet of the powder selecting machine through the air flow, the fine powder with larger particle size is conveyed to the main material inlet of the powder selecting machine through the bucket elevator, and the coarse and fine materials in the fine powder entering from the air inlet of the powder selecting machine are separated again under the action of the air flow, so that the materials are separated more thoroughly, the quantity of the regrind materials of the ball return mill can be greatly reduced, and the yield of finished products is improved;
after powder is selected by the powder selecting machine, a two-stage product can be obtained, namely a two-stage material and a three-stage material, wherein the two-stage material is classified by a conical separator and an impeller, the three-stage material is classified by the impeller and a cyclone separator, the material is finer, the particle size of the two-stage material is generally 20-120 meshes, and the particle size of the three-stage material is generally more than 120 meshes.
Further, the cyclone separator comprises a plurality of air outlets, the air outlets of the cyclone separators are communicated with the cyclone separator combination air outlet, and the cyclone separator combination air outlet is communicated with the air suction inlet of the fan through a return air pipe.
Further, a total air regulating valve is arranged in the return air pipe and used for regulating the total air quantity of the system.
Further, the ball mill comprises a cylinder, and a feeding end cover and a discharging end cover which are fixedly connected to the two ends of the cylinder, wherein a hollow feeding shaft is arranged at the feeding end cover, a hollow discharging shaft is arranged at the discharging end cover, the coarse material feeding port is an inlet of the hollow feeding shaft, and a gas material outlet of the ball mill is an outlet of the hollow discharging shaft;
the barrel comprises a ball milling area close to the feeding end cover and a discharging area close to the discharging end cover, a partition plate is arranged between the ball milling area and the discharging area, discharging holes are formed in the partition plate, a plurality of discharging holes are formed in the outer wall of the discharging area, an annular sealing cover is further arranged on the periphery of the discharging area, and a first discharging opening is formed in the lower portion of the annular sealing cover.
The beneficial effects of adopting the further technical scheme are as follows: the materials with certain granularity enter the discharging area through the discharging hole under the action of wind force, the inside of the hollow discharging shaft is in a micro negative pressure state, so that a large part of fine materials in the materials can be sucked away, and other materials flow out from the discharging groove, so that the materials after ball milling are separated once before entering the powder selector, the yield of finished materials can be greatly improved, and the over-grinding phenomenon can be reduced as far as possible.
Further, the discharge holes comprise a plurality of discharge holes, and the plurality of discharge holes are uniformly distributed on the compartment plate.
Further, the discharge hole is a conical hole or a trapezoid hole, the feeding end of the discharge hole is a small-diameter end, and the discharge end of the discharge hole is a large-diameter end.
Further, the hollow feeding shaft and the hollow discharging shaft are respectively provided with a spiral material guide.
Further, a connecting flange is arranged on the compartment plate, and the connecting flange is connected with the discharging end cover through supporting round steel.
Further, the tail end of the auxiliary feeding pipeline is also provided with a choke valve.
Further, the device also comprises a tail grinding separator, and the gas outlet of the ball mill is communicated with the gas inlet of the powder selecting machine through the tail grinding separator.
The beneficial effects of adopting the further technical scheme are as follows: the material flow coming out along with the air flow from the ball mill can be separated, the separated coarse material is carried out in the main material inlet of the powder concentrator by the lifting equipment, and the separated fine material enters the air material inlet of the powder concentrator, so that the screening of the fine powder is facilitated.
Further, the ball mill gas material outlet is communicated with the feed inlet of the mill tail separator through an airflow feeding pipeline, the outlet of the airflow feeding pipeline stretches into the mill tail separator, a second conical separator is arranged at the outlet of the airflow feeding pipeline, a separator gas material outlet is arranged at the upper part of the mill tail separator, the separator gas material outlet is communicated with the gas material inlet of the powder separator through a second discharging pipeline, and a second discharging opening is arranged on the airflow feeding pipeline.
Further, the second discharge opening is connected to the lifting device by a discharge pipe.
Further, the inlet of the hollow feeding shaft is connected with a main feeding pipeline, the inlet of the main feeding pipeline is connected with a feeding system, the auxiliary feeding pipeline is communicated with the main feeding pipeline, and the main feeding pipeline is communicated with the air supply pipeline.
Further, a spiral feeder is arranged at the upper part of the outer bin body, and a main material inlet of the powder selecting machine is aligned with a discharge hole of the spiral feeder.
Further, an air supply chamber is arranged below the inner part of the inner bin body, an air outlet of the fan is also communicated with one side of the air supply chamber through an air supply pipeline, a strip-shaped prismatic body is arranged at the upper part of the air supply chamber, and the other side of the air supply chamber is communicated with the second discharging pipeline through a first air conveying pipeline.
The beneficial effects of adopting the further technical scheme are as follows: the outlet of the air supply chamber is connected with the outlet of the fan through the air supply pipeline, the strip-shaped prismatic body divides the upward air flow in the air supply chamber into two parts, so that the upward impact force is formed on the materials entering from the main material inlet of the powder concentrator, meanwhile, the first air conveying pipeline is communicated with the second discharging pipeline, so that the air flow entering from the air material inlet of the powder concentrator (containing the fine materials coming from the ball mill) can form the oblique upward impact force on the materials entering from the main material inlet of the powder concentrator, the materials entering from the main material inlet of the powder concentrator can be separated more thoroughly under the action of two air flows, the materials with smaller granularity are ensured to be separated out as much as possible, and the quantity of the materials regrind by the ball mill is greatly reduced.
Further, a main air pipeline is arranged at the air outlet of the fan, the outlet of the main air pipeline is respectively connected with the air supply pipeline, the air supply pipeline and the expansion surplus air conveying pipeline, and a first air regulating valve, a second air regulating valve and a third air regulating valve are respectively arranged in the air supply pipeline, the air supply pipeline and the expansion surplus air conveying pipeline
Further, a sliding plate is further arranged in the inner bin body, the sliding plate is arranged below the main material inlet of the powder selecting machine, and the sliding plate is inclined obliquely downwards.
The beneficial effects of adopting the further technical scheme are as follows: after the materials entering from the main material inlet of the powder concentrator are scattered by the material sliding plate, the materials are easier to separate in thickness under the impact of air flow, so that the separation efficiency can be greatly improved, the yield of finished products is improved, the quantity of the regrind materials is reduced, and the overgrinding phenomenon is reduced.
Further, the first kuppe includes horn and the upper portion of lower part drum, the upper portion of drum is equipped with first cone separator, the drum on first kuppe upper portion with first cone separator all locates in the main powder chamber that selects.
Further, the second air guide sleeve is a conical cylinder with a larger lower opening, the upper portion of the second air guide sleeve is fixed on the side wall of the main powder selecting chamber through a connecting plate, a secondary material flow passage is further arranged between the second air guide sleeve and the side wall of the main powder selecting chamber, and the lower portion of the secondary material flow passage is communicated with the secondary material discharging opening.
Further, the secondary material discharging opening and the primary material discharging opening extend out of the bin wall of the outer bin body respectively.
Further, the second grade material feed opening is through first unloading pipeline intercommunication to the outer storehouse body storehouse wall outside, interior storehouse body lower part through second unloading pipeline with first unloading pipeline intercommunication, the end of first unloading pipeline is equipped with first unloading control valve, be equipped with second unloading control valve in the second unloading pipeline.
The beneficial effects of adopting the further technical scheme are as follows: after powder is selected through the powder selecting machine, the primary material, the secondary material and the tertiary material can be selected, the granularity of the primary material is the largest, the secondary material needs to be recycled to the ball mill for regrinding, the granularity of the secondary material can be secondarily controlled according to market demands, the opening and closing of the first blanking control valve and the second blanking control valve can be controlled, whether the secondary material is collected or the secondary material is recycled to the ball mill for regrinding is determined, and the selectivity of a user is increased.
Further, a first air adjusting mechanism is arranged in the first air conveying pipeline, and a second air adjusting mechanism is arranged in the second discharging pipeline.
Further, a third blanking control valve is arranged at the third-stage material blanking opening.
Further, a vibrating screen is arranged below the secondary material discharging opening, and a magnetic separator is arranged below the vibrating screen.
Further, the coarse fodder feed opening of shale shaker is connected to main feed pipe through the second pipeline of unloading.
Further, an electromagnetic dry powder separator is arranged below the third-stage material discharging opening.
Further, the vibrating screen is a high-frequency vibrating screen.
Drawings
FIG. 1 is a schematic diagram of the working principle of the present invention;
FIG. 2 is a schematic diagram of the structure of the present invention;
FIG. 3 is a right side view of FIG. 2;
FIG. 4 is a cross-sectional view taken along the direction E-E in FIG. 2;
FIG. 5 is a cross-sectional view taken along the direction A-A in FIG. 3;
FIG. 6 is a rear view of FIG. 2;
FIG. 7 is a cross-sectional view taken along the direction C-C in FIG. 6;
FIG. 8 is a schematic structural view of a ball mill according to the present invention;
FIG. 9 is a partially enlarged schematic illustration of FIG. 8 at D;
FIG. 10 is a schematic diagram of a powder concentrator according to the present invention;
FIG. 11 is a cross-sectional view taken along the direction B-B of FIG. 10;
in the drawings, the list of component names indicated by the respective reference numerals is as follows: 100. ball mill, 101, barrel, 102, feeding end cover, 103, hollow feeding shaft, 104, spiral guide, 105, ball milling area, 106, discharging area, 107, discharging end cover, 108, hollow discharging shaft, 109, connecting flange, 110, discharging hole, 111, annular closed cover, 112, first discharging opening, 113, partition plate, 114, discharging hole, 115, supporting round steel;
200. the fan, 201, the air outlet, 202 and the air suction port;
300. bucket elevator;
400. a bag-type dust collector 401 and a bag-type dust collector discharge valve;
500. the powder concentrator comprises a powder concentrator 501, a main material inlet of the powder concentrator 502, a gas material inlet of the powder concentrator 503, a first-level material discharging opening, 504, a third-level material discharging opening, 505, an outer bin body, 506, an inner bin body, 507, a sliding plate 508, an elongated prismatic body 510, a gas supply chamber 511, a second-level material inlet 512, a spiral feeder 513, a discharging opening of the spiral feeder 514, a feeding opening of the spiral feeder 515, a gas flow discharging opening 516, a first guide cover 517, a first conical separator 518, a main powder selecting chamber 520, a second-level material discharging opening 521, a first discharging pipeline 522, a cyclone separator 523, an impeller 524, a second guide cover 525, a third guide cover 526, a third discharging control valve 527, a discharging opening of the cyclone separator 528 and a third-level material inlet;
600. a vibrating screen;
700. a magnetic separator;
800. an electromagnetic dry powder separator;
900. a tail grinding separator 901 and a second conical separator;
2. the second discharging pipeline, 3, the air supply pipeline, 4, the first air conveying pipeline, 5, the air supply pipeline, 6, the main feeding pipeline, 7, the auxiliary feeding pipeline, 8, the second discharging pipeline, 9, the return air pipe, 10, the first discharging pipeline, 11, the air flow feeding pipeline, 12, the first discharging pipeline, 13, the storage pit, 14, the second discharging pipeline, 15, the main air pipeline, 16, the second discharge port, 17, the surplus air conveying pipeline, 18, the first air regulating valve, 19, the first air regulating mechanism, 20, the third air regulating valve, 21, the second air regulating valve, 22, the first blanking control valve, 23, the choke valve, 24, the total air regulating valve, 25 and the second air regulating mechanism.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
As shown in fig. 1-11, a grinding processing system comprises a fan 200, a ball mill 100, lifting equipment, a powder concentrator 500 and a bag-type dust collector 400, wherein a bag-type dust collector discharge valve 401 is arranged below the bag-type dust collector 400, the lifting equipment adopts a bucket elevator 300, the lower part of the bucket elevator 300 is arranged in a storage pit 13, the fan 200 comprises an air suction port and an air outlet, a coarse material feed port, a ball mill air material outlet and a first discharge port 112 are arranged on the ball mill, a main air pipeline 15 is connected to the air outlet, an air supply pipeline 5, an air supply pipeline 3 and an expanded residual air conveying pipeline 17 are respectively connected to the outlet of the main air pipeline 15, and a first air regulating valve 18, a second air regulating valve 21 and a third air regulating valve 20 are respectively arranged in the air supply pipeline 5, the air supply pipeline 3 and the expanded residual air conveying pipeline 17; the outlet of the air supply pipeline 5 is connected with the coarse material feeding port, the air outlet 201 is also connected with the cloth bag dust remover 400 through an expanded air conveying pipeline 17, and the air is discharged to the atmosphere after being removed by the cloth bag dust remover 400;
the powder concentrator 500 comprises an outer bin body 505 and an inner bin body 506 arranged in the outer bin body 505, wherein a three-level material blanking port 504 is arranged at the lower part of the outer bin body 505, a first-level material blanking port 503 is arranged at the lower part of the inner bin body 506, a powder concentrator gas inlet is arranged on the bin wall of the inner bin body 506, a powder concentrator main material inlet 501 and a gas flow outlet 515 are arranged at the upper end of the inner bin body 506, the first-level material blanking port 503 is communicated with the coarse material feeding port through an auxiliary feeding pipeline 7, in particular, a main feeding pipeline 6 is connected to the air supply pipeline 5, the auxiliary feeding pipeline 7 is communicated with the main feeding pipeline 6, and a choke valve 23 is further arranged at the tail end of the auxiliary feeding pipeline 7;
the first discharge opening 112 is connected to a feed opening at the lower part of the bucket elevator 300 through a discharge pipeline, the lower part of the bucket elevator 300 is arranged in the storage pit 13, and a conveying hopper of the bucket elevator 300 can convey materials to the main material inlet 501 of the powder selecting machine;
a first air guide sleeve 516 is arranged at the upper part of the air flow discharging hole 515, and a first conical separator 517 is arranged at the upper part of the first air guide sleeve 516; the upper part of the first air guide sleeve 516 and the first conical separator 517 are both arranged in a main powder selecting chamber 518, a secondary material discharging opening 520 is formed in the lower part of the main powder selecting chamber 518, an impeller 523 is arranged on the upper part of the main powder selecting chamber 518, a second air guide sleeve 524 is arranged below the impeller 523, a third air guide sleeve 525 is arranged above the impeller 523, the third air guide sleeve 525 is communicated with the upper part of the main powder selecting chamber 518, the third air guide sleeve 525 is communicated with an air inlet of a cyclone separator 522, a discharging opening 527 of the cyclone separator is communicated with a tertiary material inlet 528 on the upper part of the outer bin body 505, and the tertiary material is discharged through the tertiary material discharging opening 528; the cyclone separator 522 includes a plurality of, and is a plurality of the gas outlet of cyclone separator 522 all communicates in the cyclone separator combination gas outlet, cyclone separator combination gas outlet pass through return air pipe 9 with the inlet scoop 202 of fan communicates, be equipped with total wind governing valve 24 in the return air pipe 9 for the total amount of wind of governing system.
The ball mill 100 comprises a cylinder 101, and a feeding end cover 102 and a discharging end cover 107 which are fixedly connected to two ends of the cylinder 101, wherein a hollow feeding shaft 103 is arranged at the feeding end cover 102, a hollow discharging shaft 108 is arranged at the discharging end cover 107, spiral material guides 104 are respectively arranged at the hollow feeding shaft 103 and the hollow discharging shaft 108, a coarse material feeding inlet is an inlet of the hollow feeding shaft 103, and a ball mill gas material outlet is an outlet of the hollow discharging shaft 108;
the barrel 101 comprises a ball milling area 105 close to the feeding end cover 102 and a discharging area 106 close to the discharging end cover 107, a partition plate 113 is arranged between the ball milling area 105 and the discharging area 106, a plurality of discharging holes 114 are uniformly distributed on the partition plate 113, the discharging holes 114 are conical holes, the feeding end of the discharging holes 114 is a small-diameter end, and the discharging end of the discharging holes 114 is a large-diameter end; a plurality of discharging holes 110 are uniformly distributed on the outer wall of the discharging area 106, an annular sealing cover 111 is further arranged on the periphery of the discharging area 106, the first discharging opening 112 is arranged at the lower part of the annular sealing cover 111, the first discharging opening 112 is connected into a feeding opening of the bucket elevator 300 through a first discharging pipeline 10, and the feeding opening of the bucket elevator refers to an inlet of a conveying hopper on the bucket elevator 300.
The bin separation plate 113 is provided with a connecting flange 109, and the connecting flange 109 is connected with the discharge end cover 107 through a supporting round steel 115.
Still include mill tail separating centrifuge 900, the ball mill gas material export through air current feeding pipeline 11 with mill tail separating centrifuge 900's feed inlet intercommunication, the export of air current feeding pipeline 11 stretches into mill tail separating centrifuge 900 is inside, just the exit of air current feeding pipeline 11 is equipped with second conical separator 901, mill tail separating centrifuge 900's upper portion is equipped with the separating centrifuge gas material export, the separating centrifuge gas material export through second ejection of compact pipeline 2 with powder concentrator gas material import 502 intercommunication, be equipped with second discharge opening 16 on the air current feeding pipeline 11, second discharge opening 16 is connected to through first discharge pipeline 12 the pan feeding mouth department of bucket elevator 300.
The upper part of the outer bin body 505 is provided with a spiral feeder 512, and the main material inlet 501 of the powder selecting machine is aligned with the discharging hole 513 of the spiral feeder.
An air supply chamber 510 is arranged below the interior of the inner bin 506, the air supply pipeline 3 is communicated with one side of the air supply chamber 510, the upper part of the air supply chamber 510 is opened, a strip-shaped prismatic body 508 is arranged, and the other side of the air supply chamber 510 is communicated with the second discharging pipeline 2 through a first air conveying pipeline 4.
The inside of the inner bin 506 is also provided with a sliding plate 507, the sliding plate 507 is arranged below the main material inlet 501 of the powder selecting machine, and the sliding plate 507 inclines obliquely downwards.
The first air guide sleeve 516 comprises a horn at the lower part and a cylinder at the upper part, the upper part of the cylinder is provided with the first conical separator 517, and the cylinder at the upper part of the first air guide sleeve 516 and the first conical separator 517 are both arranged in the main powder selecting chamber 518.
The second air guide sleeve 524 is a conical cylinder with a larger lower opening, the upper part of the second air guide sleeve 524 is fixed on the side wall of the main powder selecting chamber 518 through a connecting plate, a secondary material flow passage is further arranged between the second air guide sleeve 524 and the side wall of the main powder selecting chamber 518, and the lower part of the secondary material flow passage is communicated with the secondary material discharging opening 520.
The secondary material discharging opening 520 and the primary material discharging opening 503 extend out of the wall of the outer bin 505 respectively.
The secondary material discharging opening 520 is communicated to the outside of the bin wall of the outer bin body 505 through a first discharging pipeline 521, the lower part of the inner bin body 506 is communicated with the first discharging pipeline 521 through a second discharging pipeline 8, the tail end of the first discharging pipeline 521 is provided with a first discharging control valve 22, and the second discharging pipeline 8 is internally provided with a second discharging control valve.
The first air delivery pipeline 4 is internally provided with a first air adjusting mechanism 19, and the second discharging pipeline 2 is internally provided with a second air adjusting mechanism 25.
A third blanking control valve 526 is provided at the third-stage material blanking port 504.
The below of secondary material feed opening 520 is equipped with shale shaker 600, shale shaker 600 is the high frequency vibrating screen, the below of shale shaker 600 is equipped with magnet separator 700, the coarse fodder feed opening of shale shaker 600 is connected to through second discharge tube 14 main feed tube 6.
An electromagnetic dry powder separator 800 is arranged below the three-stage material discharging opening 504.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (9)
1. The grinding processing system is characterized by comprising a fan, a ball mill, lifting equipment, a powder concentrator and a bag-type dust collector, wherein the fan comprises an air suction inlet and an air outlet, the ball mill is provided with a coarse material feeding inlet, a ball mill air material outlet and a first discharge opening, and the air outlet is communicated with the coarse material feeding inlet through an air supply pipeline;
the powder concentrator comprises an outer bin body and an inner bin body arranged in the outer bin body, wherein a three-level material discharging opening is formed in the lower portion of the outer bin body, a first-level material discharging opening is formed in the lower portion of the inner bin body, a powder concentrator gas inlet is formed in the bin wall of the inner bin body, a powder concentrator main material inlet and an air flow discharging opening are formed in the upper end of the inner bin body, and the first-level material discharging opening is communicated with the coarse material feeding opening through an auxiliary feeding pipeline;
the first discharge opening is connected to the lifting device through a discharging pipeline, the lifting device can convey materials to the main material inlet of the powder selecting machine, the gas material outlet of the ball mill is communicated with the gas material inlet of the powder selecting machine, and the air outlet is also connected with the bag-type dust collector through an expanded residual air conveying pipeline;
the upper part of the airflow discharge hole is provided with a first air guide sleeve, and the upper part of the first air guide sleeve is provided with a first conical separator; the upper part of the first air guide sleeve and the first conical separator are arranged in the main powder selecting chamber, the lower part of the main powder selecting chamber is provided with a secondary material discharging opening, the upper part of the main powder selecting chamber is provided with an impeller, the lower part of the impeller is provided with a second air guide sleeve, the upper part of the impeller is provided with a third air guide sleeve, the third air guide sleeve is communicated with the upper part of the main powder selecting chamber, the third air guide sleeve is communicated with an air inlet of the cyclone separator, the discharging opening of the cyclone separator is communicated with a tertiary material inlet at the upper part of the outer bin body, and tertiary materials are discharged through the tertiary material discharging opening; the air outlet of the cyclone separator is communicated with the air suction inlet of the fan;
the device also comprises a tail grinding separator, and the gas outlet of the ball mill is communicated with the gas inlet of the powder selecting machine through the tail grinding separator.
2. The grinding processing system according to claim 1, wherein the ball mill comprises a cylinder, and a feeding end cover and a discharging end cover which are fixedly connected to two ends of the cylinder, a hollow feeding shaft is arranged at the feeding end cover, a hollow discharging shaft is arranged at the discharging end cover, the coarse material feeding port is an inlet of the hollow feeding shaft, and a gas outlet of the ball mill is an outlet of the hollow discharging shaft;
the barrel comprises a ball milling area close to the feeding end cover and a discharging area close to the discharging end cover, a partition plate is arranged between the ball milling area and the discharging area, discharging holes are formed in the partition plate, a plurality of discharging holes are formed in the outer wall of the discharging area, an annular sealing cover is further arranged on the periphery of the discharging area, and a first discharging opening is formed in the lower portion of the annular sealing cover.
3. The grinding processing system according to claim 2, wherein the ball mill gas outlet is communicated with the feed inlet of the mill tail separator through an air flow feeding pipeline, the outlet of the air flow feeding pipeline extends into the mill tail separator, a second conical separator is arranged at the outlet of the air flow feeding pipeline, a separator gas outlet is arranged at the upper part of the mill tail separator, the separator gas outlet is communicated with the powder separator gas inlet through a second discharging pipeline, and a second discharge opening is arranged on the air flow feeding pipeline.
4. The grinding processing system of claim 2, wherein a main feed pipe is connected to an inlet of the hollow feed shaft, a feeding system is connected to an inlet of the main feed pipe, the auxiliary feed pipe is communicated with the main feed pipe, and the main feed pipe is communicated with the air supply pipe.
5. A grinding system according to claim 3, wherein a wind supply chamber is arranged below the interior of the inner bin body, the wind outlet of the fan is communicated with one side of the wind supply chamber through a wind supply pipeline, a strip-shaped prismatic body is arranged at the upper part of the wind supply chamber, and the other side of the wind supply chamber is communicated with the second discharging pipeline through a first wind conveying pipeline.
6. The grinding system of any one of claims 1-4, wherein a slide plate is further arranged in the inner bin body, the slide plate is arranged below the main material inlet of the powder concentrator, and the slide plate is inclined obliquely downwards.
7. The grinding system of claim 4, wherein a vibrating screen is arranged below the secondary material feed opening, and a magnetic separator is arranged below the vibrating screen.
8. The grinding processing system of claim 7 wherein the coarse feed port of the vibrating screen is connected to the main feed conduit by a second discharge conduit.
9. The grinding system of any one of claims 1-4, wherein an electromagnetic dry powder separator is arranged below the third-stage material feed opening.
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| CN201910175532.1A CN109746105B (en) | 2019-03-08 | 2019-03-08 | Grinding system |
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| CN201910175532.1A CN109746105B (en) | 2019-03-08 | 2019-03-08 | Grinding system |
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| CN109746105B true CN109746105B (en) | 2024-03-26 |
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