CN106680140B - A kind of coal float-sink test device and method - Google Patents
A kind of coal float-sink test device and method Download PDFInfo
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- CN106680140B CN106680140B CN201710016092.6A CN201710016092A CN106680140B CN 106680140 B CN106680140 B CN 106680140B CN 201710016092 A CN201710016092 A CN 201710016092A CN 106680140 B CN106680140 B CN 106680140B
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- scraper plate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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Abstract
The invention discloses a kind of coal float-sink test devices, including rack, pedestal, scraper plate, the connection of the bottom of the pedestal and rack, and it is vertical with rack, pallet is placed on pedestal, pallet is connect by a transmission mechanism with the first motor being fixed on the base, and can make the straight reciprocating motion of horizontal direction under the driving of first motor and transmission mechanism；The two sides of pallet are provided with magnetic pole, are provided with the slot that drifts along on pallet, and the slot that drifts along is provided with magnetic liquid, are provided with densitometer in the slot that drifts along；It drifts along and is provided with overflow port on slot, the scraper plate is located above overflow port；The scraper plate is connect by a driving device with the second motor for being located at machine frame inside, and scraper plate can make circular motion in vertical direction under the driving of the driving mechanism and the second motor.The present invention efficiently solves the problems such as traditional coal float-sink test elapsed time is long, consumption manpower is big and consumption drug is more, has many advantages, such as that at low cost, structure is simple, easy to operate and work efficiency is high.
Description
Technical field
The present invention relates to a kind of experimental rig, especially a kind of coal float-sink test device for belonging to coal preparation technology field and
Method.
Background technique
Gravity separation is most important coal preparation technology means, it is mainly sorted according to coal granule density difference, so
The quality index for understanding the density level product of each granularity of coal is critically important.The density composition for studying coal mainly uses float-sink test
Method.Coal float-sink test is the heavy-fluid of coal sample different densities to be divided into different density levels, and measure each density level and produce
The yield of object and the test of characteristic, characteristic is generally indicated with ash content, passes through float-sink test, it will be appreciated that raw coal washability is divided
Effect is selected, provides technical basis for process coal preparation flowsheet and production management.
Currently, common coal float-sink test method is mostly in reference to standard GB/T 478-87, its fundamental test mistake
Journey are as follows: first a certain amount of coal sample is put into net bottom bucket, is then immersed the net bottom bucket for filling coal sample in heavy-fluid bucket, gently with wooden stick
Agitation gently moves up and down net bottom bucket, after its static layering, carefully fishes for floating object in certain direction with fishing spoon, directly
Until fishing is to the greatest extent, finally the net bottom bucket equipped with hypostasis is slowly lifted, is tiltedly placed on barrel rim, filters heavy-fluid to the greatest extent, then put it into one
In the heavy-fluid bucket of a density.It is carried out with same method according to the sequence of density from low to high, until coal sample is all finished,
Finally hypostasis is poured into disk.Major defect existing for the above process has: 1) test needs repeatedly to immerse coal sample, fishes for floating object
With filter heavy-fluid to the greatest extent, work flow is long, elapsed time is long；2) test usually requires two people operation, is each responsible for pail and stirring, fishing
Floating object is taken, consumption manpower is big；3) drug of test consumption is more, and these drugs generally have corrosivity, to operator
Health generate certain influence；4) for test tool such as heavy-fluid bucket, net bottom bucket etc. than cumbersome, the test amount of labour is big, test
Environment is poor.Therefore it develops a kind of structure is simple, easy to operate, work efficiency is high coal float-sink test device and method is just shown
It obtains particularly important.
Summary of the invention
Simple, easy to operate, work effect that in response to the problems existing in the prior art, the purpose of the present invention is to provide a kind of structures
The high coal float-sink test device of rate and method.
To achieve the above object, the technical solution adopted by the present invention is that:
The bottom of a kind of coal float-sink test device, including rack, pedestal, scraper plate, the pedestal and rack connects, and with
Rack is vertical, and pallet is placed on pedestal, and pallet is connect by a transmission mechanism with the first motor being fixed on the base, and
It can make the straight reciprocating motion of horizontal direction under the driving of first motor and transmission mechanism；The two sides of pallet are provided with magnetic
Pole is provided with the slot that drifts along on pallet, and the slot that drifts along is provided with magnetic liquid, is provided with densitometer in the slot that drifts along；It drifts along and is arranged on slot
There is overflow port, the scraper plate is located above overflow port；The scraper plate is by a driving mechanism and positioned at the second of machine frame inside
Motor connection, scraper plate can make circular motion in vertical direction under the driving of the driving mechanism and the second motor.
The transmission mechanism is slider-crank mechanism.
The driving mechanism includes drive pulley, cantilever, driven pulley, the outer of the scraper plate and driven pulley
It is fixedly connected, driven pulley is sequentially connected with the drive pulley being fixed on the rack by belt；One end of cantilever with from
Dynamic belt pulley is fixedly connected, and the other end is fixedly connected with rack；Drive pulley is connect with the second motor for being located at machine frame inside,
It is driven by it.
It further include controller, for adjusting the electric current of magnetic pole, the movement velocity of scraper plate and pallet.
The densitometer, which is set to, to drift along on slot inner wall.
A kind of coal float-sink test method, includes the following steps:
Step a, coal sample is put into and is drifted along in slot, and magnetic liquid to liquid level distance is added and drifts along the overflow port of slot
At 2-3cm；
Step b adjusts the magnetic field strength for changing magnetic pole by the size of current of magnetic pole, so that magnetic liquid is reached setting close
Degree；
Step c, density floats up at liquid level lower than the product of magnetic liquid density in coal sample, and opening scraper plate will float
Object scrapes until shaving, stopping scraper plate；
Step d opens pallet and moves back and forth, and remaining coal sample is further loose in the slot that will drift along, make in step c because
Sample low-density product that is sufficiently not loose and not floating continues to float, and stops pallet after 1min and moves back and forth；
Step e, unlatching scraper plate scrapes supernatant until scraping, then stops scraper plate after standing 1min；
Step f, the supernatant that step c and step e are scraped merge, and as the product for being lower than the setting density, rinse, dry
Dry and weighing；
Step g repeats step b-f according to setting density sequence from low to high, and by remaining coal in the slot that finally drifts along
Charcoal sample filtering, flushing, drying and weighing.
The utility model has the advantages that the present invention utilizes magnetic liquid in the adjustable principle of variation magnetic field intensity lower density, coal is evaded
Heavy-fluid prepares the problems such as complicated, chemical consumption is mostly poor with experimental enviroment in float-sink test；By the way that drift along slot and scraper plate is arranged, solve
The problems such as float-sink test needs to repeat to immerse coal sample, fishes for floating object and filter heavy-fluid to the greatest extent, shortens test period, reduces manpower
Consumption and labor intensity；Pallet makees the straight reciprocating motion of horizontal direction, reduces the operation such as artificial pail and stirring, equally may be used
To reduce manpower consumption and labor intensity.The present invention efficiently solves traditional coal float-sink test elapsed time length, consumption manpower
The problems such as big and consumption drug is more, have many advantages, such as that at low cost, structure is simple, easy to operate and work efficiency is high, can answer extensively
For gravity treatment theoretical research and experimental modelling, it can also be used to instruct gravity treatment production practices.
Detailed description of the invention
Fig. 1 is coal float-sink test device schematic diagram of the invention；
Fig. 2 is the top view of Fig. 1；
In figure: 1- rack；2- pedestal；3- magnetic pole；The first magnetic pole of 31-；The second magnetic pole of 32-；4- pallet；5- drifts along slot, 6-
Magnetic liquid；7- scraper plate；8- driven pulley；9- drive pulley；10- cantilever；11- densitometer；12- controller；13- first
Motor；14- overflow port；15- belt.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and embodiments.
As illustrated in fig. 1 and 2, a kind of coal float-sink test device of the invention, including rack 1, pedestal 2, scraper plate 7, pedestal 2
It is connect with the bottom of rack 1, and vertical with rack 1, pallet 4 is placed on pedestal 2, pallet 4 is by a transmission mechanism and admittedly
The first motor 13 being scheduled on pedestal 2 connects, and makees the low of horizontal direction under the driving of first motor 13 and transmission mechanism
Speed small size straight reciprocating motion is provided with the slot 5 that drifts along on pallet 4, and the slot 5 that drifts along is provided with magnetic liquid 6, and drift along the interior of slot 5
Densitometer 11 is provided on wall, for measuring the density of magnetic liquid；The two sides of pallet 4 are provided with magnetic pole 3, including the first magnetic pole
31 and second magnetic pole 32, the first magnetic pole 31 and the second magnetic pole 32 are arranged on pedestal 2, and its height and the slot 5 that drifts along are identical or high
In the slot 5 that drifts along；It drifts along and is provided with overflow port 14 on slot 5, scraper plate 7 is located at 14 top of overflow port；Scraper plate 7 passes through a driving mechanism
It is connect with the second motor being located inside rack 1, scraper plate 7 is under the driving of the driving mechanism and the second motor in vertical direction
Make low speed circular motion, which includes drive pulley 9, cantilever 10, driven pulley 8, scraper plate 7 and driven pulley 8
Outer be fixedly connected, driven pulley 8 is sequentially connected with the drive pulley 9 that is fixed in rack 1 by belt 15；Cantilever
10 one end is fixedly connected with driven pulley 8, and the other end is fixedly connected with rack 1；Drive pulley 9 be located at rack 1 in
Second motor in portion connects, and is driven by it.
Wherein, transmission mechanism is slider-crank mechanism, is arranged inside rack 1；Pallet 4 passes through slider-crank mechanism and the
The connection of one motor 13, realizes the straight reciprocating motion that the continuous rotation of motor is transformed into pallet.Transmission mechanism can also use
It is other to can be realized the mechanism that the continuous rotation of motor is transformed into the straight reciprocating motion of pallet 4.Likewise, scraper plate 7 connects
Driving mechanism can also be can be realized using other and make the mechanism of circular motion in vertical direction.
The depth that scraper plate 7 is inserted into magnetic liquid can be adjusted by cantilever 10.
Controller 12 is fixed in rack 1, controller 12 is connect with magnetic pole 3, first motor 13, the second motor respectively, is used
In the movement velocity for the electric current and scraper plate 7 and pallet 4 for adjusting magnetic pole 3.
Coal float-sink test method of the invention, includes the following steps:
The coal sample of certain mass is put into and drifts along in slot 5 by step a, and it is floating to liquid level distance that magnetic liquid 6 is added
At 5 overflow port 2-3cm of deep gouge；
Step b adjusts the magnetic field strength for changing magnetic pole 3 by the size of current of magnetic pole 3, magnetic liquid 6 is made to reach setting
Density；
Step c, density floats up at liquid level lower than the product of setting density in coal sample, opens scraper plate 7 for supernatant
It scrapes until shaving, stopping scraper plate 7；
Step d opens pallet 4 and moves back and forth, and remaining coal sample is further loose in the slot 5 that will drift along, and makes in step c
The low-density product not floated because sample is inabundant loose continues to float, and stops pallet 4 after 1min and moves back and forth；
Step e, unlatching scraper plate 7 scrapes supernatant until shaving, stopping scraper plate 7 after standing 1min；
Step f, the supernatant that step c and step e are scraped merge, and as the product for being lower than the setting density, rinse, dry
Dry and weighing；
Step g repeats step b-f according to setting density sequence from low to high, and by remaining coal in the slot 5 that finally drifts along
Charcoal sample filtering, flushing, drying and weighing.
Claims (5)
1. a kind of coal float-sink test device, it is characterised in that: including rack (1), pedestal (2), scraper plate (7), the pedestal (2)
It connect, and vertical with rack (1), is placed on pedestal (2) pallet (4) with the bottom of rack (1), pallet (4) passes through a biography
Motivation structure is connect with the first motor (13) being fixed on pedestal (2), and can be in first motor (13) and transmission mechanism
Make the straight reciprocating motion of horizontal direction under driving；The two sides of pallet (4) are provided with magnetic pole (3), are provided with and are drifted along on pallet (4)
Slot (5), the slot that drifts along (5) are provided with magnetic liquid (6), are provided with densitometer (11) in the slot that drifts along (5)；It drifts along and is arranged on slot (5)
Have overflow port (14), the scraper plate (7) is located above overflow port (14)；The scraper plate (7) passes through a driving mechanism and is located at
Internal the second motor connection of rack (1), scraper plate (7) can be under the drivings of the driving mechanism and the second motor in vertical side
To making circular motion；The driving mechanism includes drive pulley (9), cantilever (10), driven pulley (8), the scraper plate (7) with
The outer of driven pulley (8) is fixedly connected, and driven pulley (8) passes through with the drive pulley (9) being fixed on rack (1)
Belt (15) transmission connection；One end of cantilever (10) is fixedly connected with driven pulley (8), the other end and rack (1) fixed company
It connects；Drive pulley (9) second motor internal with rack (1) is located at is connect, and is driven by it；Scraper plate (7) is inserted into magnetic liquid
Depth be adjusted by cantilever (10).
2. coal float-sink test device according to claim 1, it is characterised in that: the transmission mechanism is crank block machine
Structure.
3. coal float-sink test device according to claim 1, it is characterised in that: further include controller (12), for adjusting
Save the electric current of magnetic pole (3), the movement velocity of scraper plate (7) and pallet (4).
4. coal float-sink test device according to claim 1, it is characterised in that: the densitometer (11), which is set to, to be drifted along
On slot (5) inner wall.
5. a kind of coal float-sink test method based on claim 1 described device, characterized by the following steps:
Coal sample is put into the slot that drifts along (5) by step a, and magnetic liquid (6) to liquid level distance is added and drifts along slot (5)
At overflow port (14) 2-3cm；
Step b adjusts the magnetic field strength for changing magnetic pole (3) by the size of current of magnetic pole (3), reaches magnetic liquid (6) and set
Determine density；
Step c, density floats up at liquid level lower than the product of magnetic liquid (6) density in coal sample, and opening scraper plate (7) will be upper
Floating object scrapes until shaving, stopping scraper plate (7)；
Step d opens pallet (4) and moves back and forth, and the remaining coal sample in slot (5) that will drift along is further loose, makes in step c
The low-density product not floated because sample is inabundant loose continues to float, and stops pallet (4) after 1min and moves back and forth；
Step e, unlatching scraper plate (7) scrapes supernatant until shaving, then stopping scraper plate (7) after standing 1min；
Step f, the supernatant that step c and step e are scraped merge, as the product for being lower than the setting density, rinse, drying and
Weighing；
Step g repeats step b-f according to setting density sequence from low to high, and the remaining coal in slot (5) that will finally drift along
Sample filtering, flushing, drying and weighing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710016092.6A CN106680140B (en) | 2017-01-10 | 2017-01-10 | A kind of coal float-sink test device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710016092.6A CN106680140B (en) | 2017-01-10 | 2017-01-10 | A kind of coal float-sink test device and method |
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| Publication Number | Publication Date |
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| CN106680140A CN106680140A (en) | 2017-05-17 |
| CN106680140B true CN106680140B (en) | 2019-08-13 |
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| CN201710016092.6A Expired - Fee Related CN106680140B (en) | 2017-01-10 | 2017-01-10 | A kind of coal float-sink test device and method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107321489B (en) * | 2017-06-29 | 2019-03-15 | 河北地质大学 | A kind of automation of circular symmetrical structure integrated form is drifted along machine |
| CN107167404B (en) * | 2017-06-29 | 2020-02-21 | 河北地质大学 | Automatic floating and sinking experimental device with linear structure |
Citations (5)
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|---|---|---|---|---|
| US5197398A (en) * | 1991-04-16 | 1993-03-30 | Electric Power Research Institute | Separation of pyrite from coal in a fluidized bed |
| CN1214452A (en) * | 1997-10-15 | 1999-04-21 | 路迈西 | Determination of float-and-sink composition of coal based on its ash content |
| CN102791380A (en) * | 2009-11-18 | 2012-11-21 | 塔塔钢铁有限公司 | Float-sink method and apparatus to determine beneficiation prospects of minerals |
| CN202590946U (en) * | 2012-03-10 | 2012-12-12 | 安徽理工大学 | Continuous automatic floating and sinking machine |
| CN102836774A (en) * | 2012-09-04 | 2012-12-26 | 永城煤电控股集团有限公司 | Coal floating and sinking device and method |
-
2017
- 2017-01-10 CN CN201710016092.6A patent/CN106680140B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5197398A (en) * | 1991-04-16 | 1993-03-30 | Electric Power Research Institute | Separation of pyrite from coal in a fluidized bed |
| CN1214452A (en) * | 1997-10-15 | 1999-04-21 | 路迈西 | Determination of float-and-sink composition of coal based on its ash content |
| CN102791380A (en) * | 2009-11-18 | 2012-11-21 | 塔塔钢铁有限公司 | Float-sink method and apparatus to determine beneficiation prospects of minerals |
| CN202590946U (en) * | 2012-03-10 | 2012-12-12 | 安徽理工大学 | Continuous automatic floating and sinking machine |
| CN102836774A (en) * | 2012-09-04 | 2012-12-26 | 永城煤电控股集团有限公司 | Coal floating and sinking device and method |
Non-Patent Citations (2)
| Title |
|---|
| 浅谈磁流体静力分选技术;陶秀祥;《煤炭加工与综合利用》;19930331(第3期);第4节、图4 * |
| 陶秀祥.浅谈磁流体静力分选技术.《煤炭加工与综合利用》.1993,(第3期), * |
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