WO2020098707A1 - Système séparant du charbon et du sable sec par l'intermédiaire de l'air - Google Patents

Système séparant du charbon et du sable sec par l'intermédiaire de l'air Download PDF

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Publication number
WO2020098707A1
WO2020098707A1 PCT/CN2019/118084 CN2019118084W WO2020098707A1 WO 2020098707 A1 WO2020098707 A1 WO 2020098707A1 CN 2019118084 W CN2019118084 W CN 2019118084W WO 2020098707 A1 WO2020098707 A1 WO 2020098707A1
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Prior art keywords
discharge
gangue
coal
chamber
sorting
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PCT/CN2019/118084
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English (en)
Chinese (zh)
Inventor
王一林
王大庆
王光领
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王光领
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Publication of WO2020098707A1 publication Critical patent/WO2020098707A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B03B5/46—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using dry heavy media; Devices therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B11/00—Feed or discharge devices integral with washing or wet-separating equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • 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
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/16—Apparatus having only parallel elements the elements being movable and in other than roller form
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool

Definitions

  • the invention relates to the technical field of coal separation, in particular to an air dry sand coal preparation system.
  • Coal preparation must use water and consume water.
  • the average water consumption for processing 1 ton of raw coal is 0.2m 3. At most, 3 tons of water are used.
  • the geological structure and geographical location of the mining area are destined to be deficient in water sources. Even if the coal is not produced on the earth There are also more than one-fifth of the districts where there is a serious shortage of water.
  • the natural water source cannot meet the needs of coal preparation. Either manually adjust the water, or transport the raw coal to a place where there is sufficient water source for centralized separation. The cost is high and the operation is inconvenient.
  • the medium consumption is about 1.5kg / t, which is a very good level
  • the media consumption of coal preparation plants is around 3kg / t, slightly higher is 5-6kg / t, and some coal preparation plants have reached 10kg / t or even higher.
  • the first stage is the foundation laying stage:
  • China University of Mining and Technology was the first in the world to study dry coal preparation, completed laboratory basic research, model test research, and established the "air heavy medium steady-state fluidization" mineral processing theory.
  • the application number of "Dry Fluidized Bed Coal Preparation Device” was filed with the China Intellectual Property Office: 8710105. Since then, China University of Mining and Technology has begun to implement the project and carry out industrialization trials in Baijiazhuang, Taiyuan.
  • the coal mine established the world's first test base, but the device has the following problems:
  • the gangue discharge method is to use the scraper to push the scraper forcefully, which causes the core components to be frequently blocked and damaged by debris such as gangue, coal slime, etc., and cannot work normally. After several improvements, the use of other schemes still cannot meet the normal use requirements.
  • the medium used is granular iron sand, which consumes too much, and consumes hundreds of tons per year. On the one hand, it increases costs and wastes resources. On the other hand, when these iron sands are burned in coal, the high temperature and heat are easy to damage the boiler.
  • the second stage is the exploration stage: the existing domestic composite dry coal preparation technology is also called air separation. Its basic principle is to make the raw coal under the trust of small particles of coal powder rely on external wind force through the swing or vibration of the bed surface. Achieve light and heavy flow. This technology has the following disadvantages:
  • the third stage is the status quo: domestic science and technology workers slightly improved the previous scheme of China University of Mining and Technology in 2008: replacing the original metal cloth wind plate with a polyethylene plastic plate with densely covered small holes and a wind cap, the following problems exist:
  • Blocky and granular gangue still falls directly on the surface of the polyethylene plastic board. Because the scraper is still used to force the scraper, it will quickly block and wear, resulting in failure to work properly.
  • the technical problem to be solved by the present invention is to overcome the above technical defects and provide an air dry sand coal preparation system that does not require a water source, has high coal preparation efficiency and low cost.
  • an air dry sand coal preparation system including a machine body, a separation system, a coal discharge system, a waste discharge system, a media processing system, an electronic control system, a dust removal system, an auxiliary
  • the system, the sorting system, coal discharge system, gangue system, and media processing system are all located in the machine body.
  • the coal discharge system and gangue system are used in conjunction with the coal block layer and gangue layer on the sorting system.
  • the discharge port on the coal discharge system and the discharge port on the waste discharge system are respectively connected to the feed port on the media processing system, and the discharge port on the media processing system is connected to the feed port on the sorting system.
  • the electrical control system is electrically connected to the sorting system, coal discharge system, gangue discharge system, media processing system, dust removal system and auxiliary system respectively.
  • the dust removal port of the dust removal system is connected to the machine body, and the discharge port on the auxiliary system is connected separately Select the feed port on the system.
  • the sorting system is composed of a sorting chamber, an air chamber, a first buffer chamber, a second buffer chamber, and a Roots blower.
  • the bottom of the sorting chamber communicates with the air inlet on the air chamber and is fixed at its communication place
  • a gas distribution plate, a heating net for heating the air in the gas chamber is fixed in the gas chamber, the air inlet on the gas chamber communicates with the air outlet on the first buffer chamber, and the air inlet on the first buffer chamber is The air outlet on the second buffer chamber communicates, and the air inlet on the second buffer chamber communicates with the air outlet on the Roots blower.
  • the gas distribution plate is composed of a plurality of fixing plates and a plurality of elastic breathable plates.
  • the fixing plates are fixedly connected with the elastic breathable plates, and are arranged at intervals, and a plurality of ventilation holes are integrally formed in the elastic breathable plate.
  • a gas flow meter and a flow regulating valve are connected to the communication between the first buffer chamber and the second buffer chamber.
  • the coal discharging system is composed of a rotating shaft, a coal discharging screen, a coal discharging channel, and a motor driving device.
  • the rotating shaft is rotatably provided at the upper end of the sorting chamber, and one end of the rotating shaft is drivingly connected to the motor driving device.
  • the coal discharge screen is composed of a plurality of coal discharge bars, the coal discharge bars are evenly distributed on the outer end surface of the rotating shaft, the feed port on the coal discharge channel communicates with the sorting chamber, and it cooperates with the coal discharge screen.
  • the motor driving device includes a first motor and a speed reducer drive-connected with the first motor, and the speed reducer is drive-connected with a rotating shaft.
  • the gangue discharge system includes a gangue screening device, a gangue pushing device, a first gangue negative pressure device, a gangue suction device, a gangue crushing device, and a second gangue negative pressure device.
  • the gangue screening device is used in conjunction with the gangue pushing device.
  • the pushing device is matched with the first gangue negative pressure device, the gangue pushing device is used with the gangue suction device, the gangue suction device is used with the gangue crushing device, and the second gangue negative pressure device is used with the gangue suction device.
  • the gangue sieving device is composed of a bottom sieve layer and a side sieve layer, the bottom sieve layer is fixedly arranged in the sorting chamber, one end of the side sieve layer is fixedly connected to the inner wall of the sorting chamber, and the other end is connected to the bottom
  • the sieve layer is fixedly connected, and the side sieve layer and the bottom sieve layer have a certain inclination.
  • the bottom sieve layer and the side sieve layer are both composed of sieve bars, and there are certain blanking sieve gaps between adjacent sieve bars .
  • the gangue pushing device is composed of a moving base, a top rod and a return rod, the top rod and the return rod are respectively fixed on both sides of the bottom of the sorting room, the mobile base is slidably arranged in the sorting room, and the moving base
  • the upper rotation is provided with a rotary rod, the rotary rod is fixedly connected with a linkage plate, the linkage plate is respectively used with the ejector rod and the return rod, and the linkage plate is forced to drive the rotary rod to rotate, and the rotary rod is fixed
  • a row of gangue claws is connected, and the end of the row of gangue claws is exposed above the bottom screen layer.
  • the first gangue negative pressure device is composed of a first negative pressure chamber, a first double gate, a first star-shaped discharge valve of the partition plate, a second star-shaped discharge valve, a string screen and a first induced draft fan.
  • a feed port on a negative pressure chamber communicates with the sorting chamber and its communication position is located at the end of the bottom sieve layer side, a first double gate is provided at the communication position between the first negative pressure chamber and the sorting chamber, and the partition is fixed It is arranged in the first negative pressure chamber, and it forms a gangue discharge chamber and a discharge medium chamber in the first negative pressure chamber, the discharge port on the discharge gangue chamber communicates with the feed port on the first star-shaped discharge valve, The discharge port on the discharge cavity communicates with the feed port on the second star-shaped discharge valve.
  • the string screen is fixedly arranged on the top of the discharge cavity.
  • a pair of gate outlets are connected, and the other end is fixedly connected to the top of the partition.
  • the air inlet on the first induced draft fan is in communication with the first negative pressure chamber, and a first magnetic filter screen is provided between the communication points. .
  • the gangue suction device is composed of a suction tube, a feeding tube and a moving device.
  • the suction tube is located at the bottom of the sorting chamber and fixed on the mobile base, and a suction hole is opened at the bottom of the feeding tube.
  • the feed port is in communication with the discharge port on the suction tube, and the discharge port on it is in communication with the feed port on the second gangue negative pressure device.
  • the feed tube is connected to the mobile device and under the control of the mobile device Move back and forth.
  • the moving device includes a second motor, a ball screw, and a connecting base.
  • the ball screw is connected to the second motor.
  • One end of the connecting base is connected to the ball screw, and the other end is connected to the feeding tube.
  • the gangue crushing device is composed of a rotating rod, a first crushed stone rod and a rack.
  • the rotating rod is located in the suction pipe and freely rotates in the suction pipe.
  • the rack is fixed at the bottom of the sorting chamber. Both ends of the rod are meshed with the rack gear, the first crushed stone rod is evenly distributed on the outer end surface of the rotating rod, and a second crushed stone rod is fixedly arranged on the inner wall of the suction pipe, and the second crushed stone rod is The first gravel rods are interlaced.
  • the second gangue negative pressure device is composed of a second negative pressure chamber, a second double gate, a third star-shaped discharge valve, a hose and a second induced draft fan.
  • the feed inlet on the second negative pressure chamber is The discharge port on the second double gate is in communication, the feed port on the second double gate is in communication with the discharge port on the hose, and the feed port on the hose is in communication with the discharge port on the feed pipe ,
  • the feed port on the third star-shaped discharge valve communicates with the second negative pressure chamber, and the discharge port thereon communicates with the feed port on the media processing system, and the second induced draft fan is connected to the second
  • the negative pressure chamber is in communication, and a second magnetic filter screen is arranged in the communication between them.
  • the media processing system is composed of a medium coarse decoupling device, a medium fine decoupling device, a belt decoupling device, and a media silo.
  • the media silo is fixed at the bottom of the machine body and connected to the coal discharge system.
  • the media in the media decoupling device The device is used in conjunction with the coal discharge system, the media processing system connected to the gangue system, and the medium coarse removal device in the device is used in conjunction with the gangue system.
  • the discharge port on the medium coarse removal device and the medium fine removal device The feed port is in communication, and the discharge port on the medium fine stripping device communicates with the feed port on the belt stripping device, and the discharge port on the belt stripping device communicates with the feed port on the media silo.
  • the material outlet on the media bin communicates with the material inlet on the sorting system.
  • the medium roughing device is composed of a first roughing cylinder, an outer reinforcing cylinder, a collecting hopper, a second roughing cylinder, an inner reinforcing cylinder and spokes.
  • the first roughing cylinder is rotatably arranged in the machine body, and the first A through hole is opened on the wall of the rough stripping cylinder, and both ends of the barrel are fixedly connected with the outer reinforcing barrel.
  • the collecting hopper is fixedly arranged at the bottom of the first rough stripping cylinder, and the discharge port thereon is on the device for fine stripping of the medium
  • the feeding port of the inner reinforcing cylinder is fixed in the outer reinforcing cylinder through spokes, the inner reinforcing cylinder is in fixed communication with the second coarse stripping cylinder, and the second coarse stripping cylinder wall is provided with a feed slot,
  • the discharge port on the second coarse stripping cylinder and the discharge port on the first coarse stripping cylinder are both in communication with the feed port on the belt disengagement device.
  • the The feed port on the second coarse stripping cylinder is in communication with the discharge port on the first star-shaped discharge valve and the discharge port on the second star-shaped discharge valve.
  • the feed port on the second roughing drum communicates with the discharge port on the coal discharge channel.
  • the medium fine stripping device is composed of a fine stripping base, a first fixed shaft, a roller, a first bearing, an arc frame, a first transfer barrel, a discharge barrel, and a third motor, and the fine stripping base is fixedly arranged on the body
  • the first fixed shaft is fixedly arranged on the fine decoupling base
  • the roller is rotatably arranged on the first fixed shaft through the first bearing, and it is located directly under the collecting hopper
  • the arc frame is fixed on the first fixed
  • Several permanent magnet blocks are fixedly arranged on the shaft, and the magnetic force of the adjacent permanent magnet blocks at the outer surface of the drum is different.
  • the discharge barrel is fixedly arranged on the fine-off base and is on the same side as the arc frame ,
  • the discharge port on the discharge barrel communicates with the feed port on the belt disengagement device,
  • the first transfer barrel is fixedly set on the fine stripping base, and it is located directly below the end of the arc frame.
  • the discharge port on the first material transfer cylinder is in communication with the media bin, and the third motor is connected to the drum drive.
  • the belt disengagement device is composed of a belt disengagement base, a second fixed shaft, a second bearing, an arc-shaped magnetic ring, a driving wheel, a driven wheel, a conveyor belt, a second transfer barrel, and a fourth motor.
  • the base is fixedly arranged in the machine body
  • the second fixed shaft is fixedly arranged on the belt disengagement base
  • the driving wheel is rotated and arranged on the second fixed shaft through a second bearing
  • the arc-shaped magnetic ring is fixedly arranged on the second
  • the driven wheel is rotatably arranged on the belt disengagement base
  • the driving wheel and the driven wheel are driven by a conveyor belt
  • the second transfer cylinder is fixedly arranged on the belt
  • the discharge port on the second transfer barrel communicates with the media compartment
  • the fourth motor is connected to the driving wheel.
  • a medium conveying pump is fixedly arranged in the machine body.
  • the feed end of the medium conveying pump is in communication with the media silo, and the discharge port on the medium is connected to the sorting chamber.
  • the sorting chamber is fixedly provided with a material level sensor.
  • the media delivery pump is used in conjunction with the level sensor.
  • the electric control system is composed of a control room and a control host.
  • the control host is fixedly installed in the control room.
  • the control host is separated from the sorting system, coal discharge system, waste discharge system, media processing system, dust removal system and auxiliary system. Electrical connection.
  • the dust removal system is composed of a dust collector and a dust removal pipe.
  • the dust suction port on the dust collector communicates with the dust outlet on the dust removal pipe, and the dust outlet on the dust removal pipe communicates with the inside of the machine body.
  • the auxiliary system is composed of a plurality of belt conveyors, which are respectively used in cooperation with the material outlet on the belt disengagement device and the material inlet on the sorting room.
  • the raw coal not only does not contact with water but also further reduces the moisture content of the clean coal during the separation process, which not only improves the quality index of the product, but also effectively reduces the invalid transportation, and there is no worries about the freezing of the car during the winter transportation of the coal in the cold area. .
  • the separation quality is high, the bed surface is fully loosely separated, there is a clear boundary between clean coal and gangue, the separation is complete, and the separation rate is close to 100%.
  • the structure of the main machine is simple, easy to install and production management, the manufacturing cost is lower than the traditional coal preparation machinery, no civil engineering is needed, a main machine is a coal preparation plant, which can be installed on the flat ground to select coal without other auxiliary facilities, Construction or transformation of coal preparation plants under the same conditions can save more than 1/2 of the cost.
  • the production efficiency is high, the quality of the whole machine is stable, and it can work continuously 24/7 without frequent maintenance, and the service life is long.
  • FIG. 1 is a schematic structural view of an air dry sand coal preparation system of the present invention.
  • FIG. 2 is a schematic structural view of a separation system in an air dry sand coal preparation system of the present invention.
  • FIG 3 is a schematic view of the right side view of the coal discharge system and the waste discharge system in an air dry sand coal preparation system of the present invention.
  • FIG. 4 is a partial front view of the structure of the gangue discharge system in an air dry sand coal preparation system of the present invention.
  • FIG. 5 is a schematic structural diagram of a medium roughening device in a medium processing system in an air dry sand coal preparation system of the present invention.
  • FIG. 6 is a schematic structural diagram of a medium fine removal device in a medium processing system in an air dry sand coal preparation system of the present invention.
  • FIG. 7 is a schematic structural diagram of a belt disengagement device in a media processing system in an air dry sand coal preparation system of the present invention.
  • An air dry sand coal preparation system a certain number of air dry sand coal preparation systems 1 can be selected according to the amount of coal preparation, to avoid excessive useless work of the entire system, and to improve the efficiency of coal preparation, including machine body 2, separation system 3.
  • the control system 7 is used for overall automatic control for easy operation.
  • the dust removal system 8 is used to suck out the dusty air in the body 2 And filter out the dust to prevent the dust from damaging the internal components and polluting the external environment.
  • the auxiliary system 9 is used for the transportation of materials.
  • the sorting system 3, coal discharge system 4, gangue discharge system 5, media processing system 6 are located in the machine body 2, the coal discharge system 4 and the gangue system 5 are respectively used in conjunction with the coal block layer and the gangue layer on the sorting system 3, the discharge port and the gangue system on the coal discharge system 4
  • the discharge ports on 5 are respectively connected to the feed ports on the medium processing system 6, the discharge ports on the medium processing system 6 are connected to the feed ports on the sorting system 3, and the electronic control system 7 is separately connected to the sorting System 3, coal discharge system 4, gangue discharge system 5, media processing system 6, dust removal system 8 and auxiliary system 9 are electrically connected, the dust removal port of the dust removal system 8 is connected to the body 2, and the discharge port of the auxiliary system 9 is connected Feed port on the sorting system 3.
  • the separation system 3 is composed of a separation chamber 301, an air chamber 302, a first buffer chamber 305, a second buffer chamber 306, and a Roots blower 307.
  • the sorting chamber 301 is an effective carrier in the form of a medium forming fluid.
  • the bottom of the sorting chamber 301 communicates with the air inlet on the gas chamber 302 and a gas distribution plate 303 is fixed at the communication place.
  • the air in the sorting chamber 301 is more uniform.
  • a heating grid 304 for heating the air in the gas chamber is fixed in the air chamber 302.
  • the heating grid 304 can ensure the drying in the sorting chamber 301, which is beneficial for the medium to form a fluid form better , Can also reduce the moisture content of the coal surface, and can also ensure that in high and cold areas can work without preheating various components, the heating net 310 is fixed in the air chamber 302 near the air inlet, the heating net 310 mesh surface and intake The direction is vertical, and the heating net 310 is composed of a number of heating wires distributed in a grid shape. The heating wires have a fast heating speed and high efficiency. At the same time, a heating plate or the like can also be used.
  • the air inlet on the air chamber 302 and the first An air outlet on a buffer chamber 305 communicates with the air inlet on the first buffer chamber 305 communicates with an air outlet on the second buffer chamber 306, and the air inlet on the second buffer chamber 306 communicates with a Roots blower
  • the air outlet on the 307 is connected, the compressed air blown by the Rhodes fan 307 enters the first buffer chamber 306 to mix evenly and then enters the first buffer chamber 306 to mix, to ensure that the compressed air in the sorting chamber 301 is more uniform
  • the gas distribution plate 303 is composed of a plurality of fixing plates 308 and a plurality of elastic breathable plates 309, the fixing plates 308 are fixedly connected to the elastic breathable plates 309, and are arranged at intervals therebetween, the elastic breathable plates 309 are integrally formed There are several vent holes, the elastic ventilation plate 309 is made of felt board, and the fixed plate 308 is made of steel plate to ensure uniform ventilation while improving the overall stability. Further, the first buffer chamber 305
  • the coal discharging system 4 is composed of a rotating shaft 401, a coal discharging screen 402, a coal discharging channel 403 and a motor driving device, the rotating shaft 401 is rotatably disposed at the upper end of the sorting chamber 301, one end of the rotating shaft 401 is drivingly connected to a motor driving device, the coal discharge screen 402 is composed of a plurality of coal discharge rods 404, and the coal discharge rods 404 are evenly distributed in rotation On the outer end surface of the shaft 401, the feed port on the coal discharge channel 403 communicates with the sorting chamber 301, and it cooperates with the coal discharge screen 402.
  • the motor driving device includes a first motor 405 and A motor 405 drives a reducer connected to the drive.
  • the speed reducer is connected to the rotating shaft 401.
  • the first motor 405 drives the reducer to rotate.
  • the reducer drives the rotating shaft 401 to rotate, and the coal discharge screen 402 on the rotating shaft 401 rotates accordingly. Under the agitation of the coal discharge screen 402, the coal lump floating on the surface of the medium is removed from the separation chamber 301 into the coal discharge channel 403. This method will not cause damage to the gas distribution plate 303, and the coal discharge efficiency is high , The dielectric loss is small.
  • the gangue discharging system 5 includes a gangue screening device 501, a gangue pushing device 502, a first gangue negative pressure device 503, a gangue suction device 504.
  • Gangue crushing device 505 and second gangue negative pressure device 506, gangue sieving device 501 cooperates with gangue pushing device 502, gangue pushing device 502 cooperates with first gangue negative pressure device 503, gangue pushing device 502 and gangue suction
  • the gangue suction device 504 cooperates with the gangue crushing device 505, and the second gangue negative pressure device 506 cooperates with the gangue suction device 504.
  • the gangue screening device 501 is composed of a bottom sieve layer 507 It is composed of a side screen layer 508, the bottom screen layer 507 is fixedly arranged in the sorting room 301, one end of the side screen layer 508 is fixedly connected to the inner wall of the sorting room 301, and the other end is fixed to the bottom screen layer 507 Connection, the side screen layer 508 and the bottom screen layer 507 have a certain inclination, the bottom screen layer 507 and the side screen layer 508 are composed of screen bars 509, and there is a certain drop between adjacent screen bars 509 When the gangue sinks from above the medium to the bottom layer of the medium, the larger gangue will fall onto the bottom sieve layer 507, and the smaller one will sink from the sieve to the bottom layer of the medium, effectively screening the gangue
  • the gangue pushing device 502 is composed of a moving base 510, a top rod 511 and a return rod 512.
  • the top rod 511 and the return rod 512 are respectively fixed in the sorting unit
  • the mobile base 510 is slidably arranged in the sorting chamber 301
  • a rotary rod 513 is rotatably provided on the mobile base 510
  • a linkage plate 514 is fixedly connected to the rotary rod 513, and the linkage plate 514 is used in cooperation with the top rod 511 and the return rod 512, and the linkage plate 514 is forced to rotate the rotating rod 513.
  • the rotating rod 513 is fixedly connected with a row of gangue claws 515, the end of the row of gangue claws 515 is exposed In the upper part of the bottom sieve layer 507, in order to prevent the gangue 515 from rotating at a large angle, a positioning baffle should also be provided as a limit for the gangue 515.
  • the movement of the mobile base 510 can drive the gangue 515 to move
  • the discharge gangue 515 is in contact with the positioning baffle to reach the limit.
  • the discharge gangue 515 can push the large particles of gangue on the bottom sieve layer 507 blanking screen seam to move.
  • the first gangue negative pressure device 503 is composed of a first negative pressure chamber 516, a first double gate 517, and a partition plate 518.
  • the material outlet on the cavity 520 communicates with the material inlet on the second star-shaped discharge valve 522, the string screen 523 is fixedly arranged on the top of the discharge chamber 520, and the material inlet on the string screen 523 is
  • the discharge port of the first double gate 517 is in communication, and the other end is fixedly connected to the top of the partition 518.
  • the air inlet on the first induced draft fan 524 is in communication with the first negative pressure chamber 516, and a communication point is provided therebetween
  • the first magnetic filter screen 525 during operation, the first induced draft fan 524 draws the air in the first negative pressure chamber 516 to form a vacuum in the first negative pressure chamber 516, the first negative pressure chamber 516 is opened in the first double gate mechanism 517
  • the mixture first passes through the string sieve 523.
  • the string sieve 523 can pass through the medium but cannot pass through the gangue.
  • the first star-shaped discharge valve 521 is discharged to the next process, the medium falls into the discharge chamber 520 and is discharged to the next process through the second star-shaped discharge valve 522, because the mixture will generate dust during the movement, These dusts will be filtered in the first magnetic filter screen 525 before entering the first induced draft fan 524, and the filtered media will then be discharged immediately.
  • the gangue suction device 504 is composed of a suction pipe 526 and feed A tube 528 and a moving device are formed.
  • the suction tube 526 is located at the bottom of the sorting chamber 301 and is fixed on the moving base 510, and a suction hole 527 is opened at the bottom thereof.
  • the feed port on the feed tube 528 and the suction device The discharge port on the tube 526 is in communication, and the discharge port on the tube 526 is in communication with the feed port on the second gangue negative pressure device 506, the feed tube 528 is connected to the mobile device and reciprocates under the control of the mobile device, Further, the mobile device includes a second motor 529, a ball screw 530, and a connecting seat 531, the ball screw 530 is connected to the second motor 529, one end of the connecting seat 531 is connected to the ball screw 530, and the other One end is connected to the feeding tube 528. During operation, the second motor 529 drives the ball screw 530 to rotate, and the ball screw 530 drives the connecting seat 531 to move.
  • the feeding tube 528 connected to the connecting seat 531 will move and bring The movable suction pipe 526 moves, and while the suction pipe 526 absorbs small particles of gangue and medium through the suction hole 527, it can drive the mobile base 510 to move.
  • the gangue crushing device 505 is composed of a rotating rod 532, a first crusher The stone rod 535 and the rack 534 are formed.
  • the rotating rod 532 is located in the suction pipe 526 and freely rotates in the suction pipe 526.
  • the rack 534 is fixedly disposed at the bottom of the sorting chamber 301.
  • the two ends are driven to mesh with the rack 534, the two ends of the rotating rod 532 penetrate the suction tube 526 and are fixedly connected with a gear 533 coaxial with the rotating rod 532, the gear 533 is used in cooperation with the rack 534, the first gravel rod 535 Evenly distributed on the outer end surface of the rotating rod 532, a second crushed stone rod 536 is fixedly arranged on the inner wall of the suction pipe 526, the second crushed stone rod 536 and the first crushed stone rod 535 are interlaced with each other, the suction pipe 526 Driven by the feeding tube 528, it moves back and forth at the bottom of the sorting chamber 301 for suction.
  • the rotating rod 532 in the suction tube 526 rotates due to the cooperation of the gear 533 and the rack 534.
  • the first crushed stone rod 535 on the rod 532 rotates with it, and the rotating first crushed stone rod 535 and the second crushed stone rod 536 in the suction pipe 526 form a shear fracture of the gangue, and directly slender gangue
  • the debris is converted into granular gangue fragments to avoid clogging problems.
  • the second gangue negative pressure device 506 is composed of a second negative pressure chamber 537, a second double gate 539, a third star discharge valve 540, a soft The tube 538 and the second induced draft fan 541 are formed, and the feed port on the second negative pressure chamber 537 communicates with the discharge port on the second double gate 539, and the feed port on the second double gate 539 is
  • the discharge port on the tube 538 communicates, the feed port on the hose 538 communicates with the discharge port on the feed tube 528, and the feed port on the third star discharge valve 540 is connected to the second negative pressure
  • the chamber 537 is in communication, and the outlet on it is in communication with the inlet on the medium processing system 6, the second induced draft fan 541 is in communication with the second negative pressure chamber 537, and a second magnetic The filter screen 542, during operation, the second induced draft fan 541 draws the air in the second negative pressure chamber 537 to form a vacuum in the second negative pressure chamber 537, and the second induced draft fan 541 can
  • the first double gate mechanism 517 and the second double gate mechanism 539 have the same structure, and are composed of the double gate chamber 543, the first valve 544, and the first The two valves 545 are formed, the first valve 544 and the second valve 545 are located at the feed end and the discharge end of the double gate chamber 543 respectively, and the feed end and sorting of the double gate chamber 543 of the first double gate mechanism 517
  • the chamber 301 communicates, and the discharge end communicates with the first negative pressure chamber 516, the feed end of the double gate chamber 543 of the second double gate mechanism 539 communicates with the hose 538, and the discharge end communicates with the second negative pressure chamber 537, when idle
  • the first valve 544 is closed and the second valve 545 is open.
  • the first valve 544 is closed and the second valve 545 is closed. Due to the vacuum effect, the double gate chamber 543 is in a vacuum state, and then the first valve 544 is opened, the second valve 545 is closed, the mixture is sucked into the double gate chamber 543, then the first valve 544 is closed, then the second valve 545 is opened, the feeding is completed, and the entire process can ensure the first negative pressure chamber 516 Or, the vacuum in the second negative pressure chamber 537 is stable.
  • the media processing system 6 is composed of a media coarse decoupling device 601, a media fine decoupling device 602, a belt decoupling device 603, and a media silo 604, the media silo 604 is fixed to the bottom of the machine body 2 and is connected to the coal discharge system 4 of the media processing system 6, the medium coarse removal device 601 is used in conjunction with the coal discharge system 4, and the media processing system 6 connected to the gangue system 5 The medium coarse decoupling device 601 is used in conjunction with the gangue discharge system 5.
  • the discharge port on the medium coarse decoupling device 601 communicates with the feed port on the medium fine decoupling device 602, and the discharge port on the medium fine decoupling device 602 Communicate with the feed port on the belt disengagement device 603, the discharge port on the belt disengagement device 603 communicates with the feed port on the media bin 604, the discharge port on the media bin 604 and the sorting system
  • the feed port on 3 is connected.
  • the medium roughening device 601 is composed of a first roughening cylinder 605, an outer reinforcing cylinder 607, a collecting hopper 608, a second roughening cylinder 609, an inner reinforcing cylinder 611 and spokes 612 ,
  • the first rough stripping cylinder 605 is set to rotate in the machine body 2
  • the first rough stripping cylinder 605 is provided with a through hole 606 on the cylinder wall
  • both ends of the first rough stripping cylinder 605 are in fixed communication with the outer reinforcing cylinder 607
  • the collecting hopper 608 is fixedly arranged at the bottom of the first coarse stripping cylinder 605, and the discharge port thereon communicates with the feed port on the medium fine stripping device 602, and the inner reinforcement cylinder 611 is fixed in the outer reinforcement cylinder 607 through spokes 612.
  • the inner reinforcing cylinder 607 is in fixed communication with the second coarse stripping cylinder 609.
  • the wall of the second coarse stripping cylinder 609 is provided with a feed slot 610, and the discharge port on the second coarse stripping cylinder 609 is connected to the first coarse
  • the material outlets on the stripping cylinder 605 are all in communication with the material inlets on the belt stripping device 603.
  • the material inlets on the second coarse stripping cylinder 609 are all Communicating with the discharge port on the first star-shaped discharge valve 521 and the discharge port on the second star-shaped discharge valve 522, when the medium processing system 6 is connected to the coal discharge system 4, the second coarse discharge The feed port on the cylinder 609 is in communication with the discharge port on the coal discharge channel 403.
  • the mixture material of the medium and coal or the mixture material of the medium and gangue first enters the second coarse removal from the end of the second rough removal cylinder 609
  • the second coarse stripping cylinder 609 rotates synchronously with the first coarse stripping cylinder 605, the medium and the smaller gangue during the continuous rotation of the second coarse stripping cylinder 609 Or coal lump from the feed slot 610 into the first coarse decanter 605, and then the medium from the through hole 606 into the hopper 608, coal or gangue from the other end of the second coarse decanter 609 and the first
  • the overall structure can effectively avoid the stuck problem at the feed hole 606 or the feed slit 610, the amount of removal medium is good and the efficiency is high, further, the belt disengagement device 603
  • the driving wheel 624, the driven wheel 627, the conveyor belt 628, the second transfer cylinder 629, and the fourth motor 630 are formed.
  • the belt disengagement base 622 is fixedly disposed in the machine body 2, and the second fixed shaft 623 is fixedly disposed at On the belt disengagement base 622, the driving wheel 624 is rotatably disposed on the second fixed shaft 623 through a second bearing 625, the arc-shaped magnetic ring 626 is fixedly disposed on the second fixed shaft 623, and is connected to the driving wheel 624
  • the inner wall has a certain gap
  • the driven wheel 627 is rotatably provided on the belt disengagement base 622
  • the driving wheel 624 and the driven wheel 627 are driven by a conveyor belt 628
  • the second transfer cylinder 629 is fixedly disposed on the belt disengagement base 622, and it is located directly under the end of the arc-shaped magnetic ring 626
  • the discharge port on the second transfer cylinder 629 communicates with the media compartment 604, the fourth motor
  • the medium delivery pump 631 is used in conjunction with the material level sensor 632.
  • the fourth motor 630 drives the first transmission wheel 624 to rotate, and the conveyor belt 628 and the second transmission wheel 627 rotate with it. Thereby, the conveyance of the material is formed.
  • the medium is adsorbed on the conveyor belt 628 because the medium contains a large amount of iron elements, and coal, gangue and other materials are transmitted to the whole When it is external, it is discharged. At this time, the medium still follows the conveyor belt 628.
  • the medium is away from the arc-shaped magnetic ring 626, it will fall into the second transfer cylinder 629 by itself, and the gangue or coal lumps will be further removed during the transfer process. To increase the reuse rate of the media.
  • the electronic control system 7 is composed of a control room 701 and a control host 702, the control host 702 is used to receive various sensor signals and send action commands to various electrical components, the control host 702 Fixedly installed in the control room 701, the control host 702 is electrically connected to the sorting system 3, coal discharge system 4, gangue discharge system 5, media processing system 6, dust removal system 8 and auxiliary system 9, respectively.
  • the dust removal system 8 is composed of a dust collector 801 and a dust removal pipe, the dust suction port on the dust collector 801 communicates with the dust outlet on the dust removal pipe, and the dust removal pipe The dust outlet on the upper part communicates with the inside of the body 2.
  • the dust collector 801 sucks out the air with dust in the body 2 and filters it to avoid the damage of the dust to the components in the body 2 and the damage to the surrounding environment.
  • the auxiliary system 9 is composed of a plurality of belt conveyors 901, which are respectively connected to the material outlet on the belt disengagement device 603 and the material inlet on the sorting chamber 301 Use fit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

La présente invention concerne un système séparant du charbon et du sable sec par l'intermédiaire de l'air, comprenant un corps de machine (2), un système de tri (3), un système de décharge de charbon (4), un système de décharge de gangue (5), un système de traitement de support (6), un système de commande électrique (7), un système d'élimination de poussière (8) et un système auxiliaire (9). Le système de tri (3), le système de décharge de charbon (4), le système de décharge de gangue (5) et le système de traitement de support (6) sont tous situés dans le corps de machine (2). Le système de décharge de charbon (4) et le système de décharge de gangue (5) utilisent et coopèrent avec une couche de bloc de charbon et une couche de gangue sur le système de tri (3) respectivement. Un orifice de décharge sur le système de décharge de charbon (4) et un orifice de décharge sur le système de décharge de gangue (5) sont séparément en communication avec un orifice d'alimentation sur le système de traitement de support (6). Un orifice de décharge sur le système de traitement de support (6) communique avec un orifice d'alimentation sur le système de tri (3). Le système de commande électrique (7) est connecté de façon électrique séparément au système de tri (3), au système de décharge de charbon (4), au système de décharge de gangue (5), au système de traitement de support (6), au système d'élimination de poussière (8) et au système auxiliaire (9). Un orifice d'élimination de poussière du système d'élimination de poussière (8) communique avec le corps de machine (2). Un orifice de décharge sur le système auxiliaire (9) est relié à l'orifice d'alimentation sur le système de tri (3). Par rapport à l'état de la technique, le système décrit a l'avantage de pouvoir remplacer complètement un procédé utilisant de l'eau pour le tri de charbon et la séparation d'air composite, ce qui réduit efficacement le coût du tri de charbon et améliore significativement l'efficacité du tri de charbon.
PCT/CN2019/118084 2018-11-14 2019-11-13 Système séparant du charbon et du sable sec par l'intermédiaire de l'air WO2020098707A1 (fr)

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CN201811350395.2 2018-11-14
CN201811350395.2A CN109317301A (zh) 2018-11-14 2018-11-14 一种空气干砂选煤系统

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CN112916365A (zh) * 2021-01-21 2021-06-08 刘飞艳 一种建筑装饰用砂石过滤器
CN113019570A (zh) * 2021-02-05 2021-06-25 王保琴 一种建筑废料回收装置
CN113786920A (zh) * 2021-07-28 2021-12-14 彭阳县鑫卓能源科技发展有限公司 一种煤矸石制砖原料处理工艺

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CN109317301A (zh) * 2018-11-14 2019-02-12 王光领 一种空气干砂选煤系统
CN109759328B (zh) * 2019-02-26 2023-12-26 蔚伟 一种矸煤分离筛、矸煤分选部和煤炭提纯脱矸机
CN113333163A (zh) * 2021-06-03 2021-09-03 陈智勇 一种分离铁砂或铁矿石的方法
CN116619561B (zh) * 2023-07-10 2023-11-03 河北国亮新材料股份有限公司 一种耐火材料制品浇注用定量输送设备
CN117920476B (zh) * 2024-03-21 2024-06-18 山西汾西矿业（集团）有限责任公司曙光煤矿 一种重介质旋流器选煤系统的预脱介装置

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CN113019570A (zh) * 2021-02-05 2021-06-25 王保琴 一种建筑废料回收装置
CN113786920A (zh) * 2021-07-28 2021-12-14 彭阳县鑫卓能源科技发展有限公司 一种煤矸石制砖原料处理工艺
CN113786920B (zh) * 2021-07-28 2022-09-30 彭阳县鑫卓能源科技发展有限公司 一种煤矸石制砖原料处理工艺

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