CN106969961A - Various broken mixing division combined sample making machine - Google Patents
Various broken mixing division combined sample making machine Download PDFInfo
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- CN106969961A CN106969961A CN201710378585.4A CN201710378585A CN106969961A CN 106969961 A CN106969961 A CN 106969961A CN 201710378585 A CN201710378585 A CN 201710378585A CN 106969961 A CN106969961 A CN 106969961A
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- division
- broken
- main shaft
- mixing
- broken mixing
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2866—Grinding or homogeneising
Abstract
The present invention provides a kind of various broken mixing division combined sample making machine, including feed hopper, below the feed hopper, connection is broken mixes the axially arranged main shaft in middle part in cylinder, the broken mixing cylinder, the main shaft upper end passes broken mixing cylinder, and the main shaft passes through drive device and drives rotation；The broken mixing cylinder internal upper part mixes disruption elements provided with one-level, bottom is provided with two grades of mixing disruption elements in the broken mixing cylinder, first-order reduction unit is set in the middle part of the broken mixing cylinder lateral wall, the broken bottom connection aggregate tube for mixing cylinder, two grades of reduction devices are set in the lateral wall of the aggregate tube.
Description
Technical field
The present invention relates to the various broken mixing division combined sample making machine of one kind.
Background technology
At present, the current mechanical sample making apparatus of existing market are divided into import, joint, domestic three class, and import equipment price is held high
It is expensive, and design itself only adapts to the undoped marketable coal of external steady quality, it is difficult to adapt to domestic complicated coal source, after-sale service
It can not be in time.Joint, home equipment rests on the imitation stage to external prior art mostly, and technology is seriously delayed,
In the current sample preparation flow of existing market, floor space is big, and complicated technological process can cause coal sample moisture evaporation to cause water
Divide loss and accuracy reduction, the crumbling method based on impacting, grind further increases coal sample moisture loss, producer is reduction
Sample preparation time and cost can only go out list using deleting in the method that sample is abandoned in key procedure and midway, sample making course without process is mixed
A kind of sample, so the coal sample error drawn is big, precision does not reach national standard requirement completely.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of coal sample diversification of varieties, and sample making course flow is quick,
Save various broken mixing division combined sample making machine of human cost.
The present invention is provided to be connected below a kind of various broken mixing division combined sample making machine, including feed hopper, the feed hopper
The axially arranged main shaft in middle part in logical broken mixing cylinder, the broken mixing cylinder, the main shaft upper end passes broken mixing cylinder, institute
State main shaft and rotation is driven by drive device；The broken mixing cylinder internal upper part mixes disruption elements provided with one-level, described broken
Bottom is mixed in cylinder provided with two grades of mixing disruption elements, the broken mixing cylinder lateral wall be located at one-level mix disruption elements and
First-order reduction unit is set between two grades of mixing disruption elements, and the broken bottom connection aggregate tube for mixing cylinder gathers materials described
The lateral wall of cylinder sets two grades of reduction devices.
Further, the aggregate tube is conically shaped.
Further, the one-level mixes multiple one-level rotating disks that disruption elements include being set on the main shaft, multiple
One-level rotating disk is from top to bottom fixedly mounted on main shaft successively, in multiple one-level rotating disks, each of superposed one-level rotating disk
It is evenly equipped with multiple one-levels for radially extending and mixes plates, each of remaining one-level rotating disk, which is evenly equipped with, multiple is radially extended
One-level blade.
Further, described two grades mix multiple secondary turntables that disruption elements include being set on the main shaft, multiple
Secondary turntable is from top to bottom fixedly mounted on main shaft successively, in multiple secondary turntables, each of superposed secondary turntable
It is evenly equipped with multiple radially extend two grades mixings plates, each of remaining secondary turntable, which is evenly equipped with, multiple radially to be extended
Two grades of blades.
Further, the first-order reduction unit is consistent with the structure of two grades of reduction devices, including division pipe, division electricity
Machine and division ratio adjustment axis, the division pipe are connected with inner chamber, and the junction between the division pipe and the inner chamber is provided with use
In the sample mouthful of division, the division motor is arranged between the division pipe and the inner chamber, and the division ratio adjustment axis is set
Put on sample mouthful, the division ratio adjustment axis is fixedly connected with the output shaft of the division motor.
Further, the radial section of the division ratio adjustment axis is semicircle or rectangle, the division ratio adjustment axis with
The sample mouthful matches.
Further, it is provided with the broken mixing cylinder on one end of feed hopper on closure, the closure
It is provided with and passes through through hole for the main shaft upper end, bearing, the charging is provided between the closure and the main shaft
Bucket is arranged above the closure and connected with the broken mixing cylinder.
Further, middle part is provided with conical baffled, the master that cavity is divided into two in the cavity of the feed hopper
Axle stretches out on closure and positioned at the conical baffled underface.
Further, the drive device includes broken mixing motor, driving wheel, driven pulley and driving belt, the master
Driving wheel is connected with the broken output shaft for mixing motor, and the driven pulley is arranged on main shaft, and the driving belt is set in actively
On wheel and driven pulley.
Further, fall into the first-order reduction unit sample mouthful material particular diameter for≤13mm or≤6mm one-level
Sample, fall into two grades of reduction devices sample mouthful material particular diameter for≤3mm two grades of increments.
Compared with prior art, the various broken mixing division combined sample making machine provided using the present invention, is had with following
Beneficial effect：
1st, coal sample diversification of varieties, it is≤13mm or≤6mm one-levels that material particular diameter can be made in an equipment simultaneously
Sample (full water sample) and material particular diameter are≤bis- grades of increments of 3mm (analysis sample), and can be needed to increase the examination of other granularities according to client
Coal sample is tested, national standard requirement is met；
2nd, multi-functional unification, by multiple stage crushing, repeatedly mixing, the function of multistage division are concentrated in a sampling machine, are saved
Most of room and time that function described above in common procedure is respective independent agency has been saved, chute blockage has been avoided completely and numerous
The drawbacks such as the accuracy reduction of coal sample caused by multiple technological process.
3rd, equipment adapts to big moisture content completely, glues coal, bulk, doping, the various colms of spoil, does not glue and does not block up, sample making course
It is smooth quick；
4th, sample preparation precision is high, and coal increment is representative strong, and truly reflection carrys out ature of coal amount to data, be client cost adjust and into
This control provides accurate foundation；
5th, the representative strong data of coal increment are true, it is ensured that Coal Trading is just and fair, is prevented effectively from trade disputes；
6th, ensure accurate coal sample analysis data, Coal Blending System provides foundation to become more meticulous, effectively reduce power industry
Cost of electricity-generating；
7th, ensure equipment fully automatic operation, greatly save human cost.
To sum up, the present invention provide it is various it is broken mixing division combined sample making machine be one energy-conservation, consumption reduction, environment protecting show
The new invention of work, there is wide market prospects and promotional value.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 schematically illustrates various broken stereogram for mixing division combined sample making machine that the embodiment of the present invention is provided；
Fig. 2 schematically illustrates various broken top view for mixing division combined sample making machine that the embodiment of the present invention is provided；
Fig. 3 schematically illustrates various broken local interior for mixing division combined sample making machine that the embodiment of the present invention is provided
Schematic diagram；
Fig. 4 schematically illustrates the schematic diagram for the type reduction device that the embodiment of the present invention is provided；
Fig. 5 schematically illustrates the schematic diagram for another type reduction device that the embodiment of the present invention is provided.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the present invention is described in detail.
Referring to the drawings, the embodiment of the present invention provides a kind of various broken mixing division combined sample making machine, including feed hopper 1,
The connection of the lower section of feed hopper 1 is broken to mix cylinder 2, crushes and mixes the axially arranged main shaft 3 in middle part in cylinder 2, the upper end of main shaft 3 passes broken
Cylinder 2 is mixed, main shaft 3 is driven by drive device and rotated.The broken internal upper part of cylinder 2 that mixes mixes disruption elements provided with one-level, crushes
Bottom in cylinder 2 is mixed, provided with two grades of mixing disruption elements, to be located at one-level in broken mixing cylinder 2 lateral wall and mix disruption elements and two
Level sets first-order reduction unit 4 between mixing disruption elements, crushes the bottom connection aggregate tube 6 for mixing cylinder 2, aggregate tube 6 is taper
Cylinder, conically shaped is easy to after clout mixing centralized recovery under gravity, and two grades of reduction devices 5 are set in the lateral wall of aggregate tube 6.
Main shaft 3 installs fixation by a fixed mount 7, and the lower end of main shaft 3 is rotatably arranged on fixed mount 7 by bearing, led to
The stability of rotation that bearing ensure that main shaft 3 is crossed, is not in the phenomenon waved.
One-level mixes multiple one-level rotating disks 8 that disruption elements include being set on main shaft 3, and multiple one-level rotating disks 8 are by up to
Under be fixedly mounted successively on main shaft 3, in multiple one-level rotating disks 8, each of superposed one-level rotating disk 8 is evenly equipped with multiple edges
Its one-level radially extended mixes plate 9, and each of remaining one-level rotating disk 8 is evenly equipped with multiple one-level blades radially extended
10, the mixing plate on one-level rotating disk 8, each one-level rotating disk 8, and the quantity of one-level blade 10 of each one-level rotating disk 8 are not limited
Fixed, particular number can be determined according to the granularity needed for actual sample preparation.As preferred, the one-level rotating disk 8 of one-level blade 10 is installed
Quantity than install one-level mix plate 9 one-level rotating disk 8 quantity it is many.
Two grades mix multiple secondary turntables 11 that disruption elements include being set on main shaft 3, and multiple secondary turntables 11 are by upper
It is fixedly mounted successively on main shaft 3 under, in multiple secondary turntables 11, each of superposed secondary turntable 11 is evenly equipped with many
Individual radially extend two grades mixings plates 12, each of remaining secondary turntable 11 be evenly equipped with it is multiple radially extend two
Mixing plate on level blade 13, secondary turntable 11, each secondary turntable 11, and two grades of blades 13 of each secondary turntable 11 are counted
Amount is not limited, and particular number can be determined according to the granularity needed for actual sample preparation.As preferred, the two of two grades of blades 13 are installed
The quantity of secondary turntable 11 of the quantity of level rotating disk 11 than installing two grades of mixing plates 12 is more.
First-order reduction unit 4 is consistent with the structure of two grades of reduction devices 5, including division pipe 14, division motor 15 and division ratio
Adjustment axis 16, division pipe 14 and inner chamber (inner chamber here refer to it is broken mix inside cylinder 2/aggregate tube 6 inside) connect, division
Junction between pipe 14 and inner chamber is provided with the sample mouthful 17 for division, division motor 15 be arranged on division pipe 14 and inner chamber it
Between, division ratio adjustment axis 16 is arranged on sample mouthful 17, and division ratio adjustment axis 16 is fixedly connected with the output shaft of division motor 15
And the amount of blocking of sample mouthful 17 can be blocked with the rotation regulation of the output shaft of division motor 15.Preferably, division ratio adjustment axis 16
Radial section be semicircle (as shown in Figure 4) or rectangle (as shown in Figure 5), when its radial section is semicircle, division ratio
Adjustment axis 16 is semicircle adjustment axis；When its radial section is rectangle, division ratio adjustment axis 16 is sheet-shaped regulation plate；Division ratio is adjusted
Nodal axisn 16 matches with sample mouthful 17.In the presence of division motor 15, with the division ratio adjustment axis 16 of semicircle or rectangle
Rotation, division ratio also changes therewith：When the plane of its rotation to division ratio adjustment axis 16 is mutually hung down with 17 place planes of sample mouthful
When straight (Fig. 4 and Fig. 5 shown in), division ratio now is maximum, i.e., division amount is maximum；When it is rotated by 90 ° again, that is, rotate to division
Then it is zero without division, i.e. division amount when plane than adjustment axis 16 is overlapped with 17 place planes of sample mouthful.
To sum up, the present invention can be according to detection it needs to be determined that division ratio, division ratio adjustment axis 16 is adjusted further according to division ratio
Rotation amount, it is thus of the invention to realize the accurate adjustment of division ratio.In addition, the division ratio adjustment axis 16 also there is physics to clean
Function, with the rotation of division ratio adjustment axis 16, the viscous material that get lodged in 17 side walls of sample mouthful can automatically be cleared up, be prevented
Cause viscous stifled when the larger material of humidity is by sample mouthful 17, can avoid causing different samples to be handed over due to residual well
Pitch infection problems.Further, after have collected representative sample, other clouts will be collected effectively, collect sample
The bottom of bucket is connected with the elephant trunk (not shown) for reclaiming clout.
It is provided with to be provided with closure 18, closure 18 on one end of feed hopper 1 in broken mixing cylinder 2 and supplies main shaft
3 upper ends pass through through hole, and bearing is provided between closure 18 and main shaft 3, and feed hopper 1 is arranged at the top of closure 18 and with crushing
Cylinder 2 is mixed to connect.Middle part is provided with conical baffled 21 that cavity is divided into two in the cavity of feed hopper 1, and this conical baffled 21
Can make material and conical baffled 21 and feed hopper 1 collide and be achieved in preliminary material mixing, main shaft 3 is by closure 18
Upper to stretch out and positioned at conical baffled 21 underface, the lower main axis 3 that block conical baffled 21 come with feed separation, Neng Gouyou
Effect ensures the normal rotation of main shaft 3, it is to avoid drive device produces failure caused by material is fallen into, and reduces equipment failure rate, makes this
Invention can realize continuous automatic mixing division.
As a kind of preferred embodiment, the drive device of the embodiment of the present invention include it is broken mix motor 19, driving wheel,
Driven pulley and driving belt 20, driving wheel are connected with the broken output shaft for mixing motor 19, and driven pulley is arranged on main shaft 3, are passed
Dynamic belt 20 is set on driving wheel and driven pulley；Driving belt 20 is preferably V belt.In the broken work for mixing motor 19
Under, driving wheel rotation simultaneously drives driven pulley to circle by driving belt 20, and main shaft 3 is made to justify in the presence of driven pulley
Rotating disk and mixing plate on Zhou Yundong, main shaft 3, blade rotation, by the side wall of the material centrifugal drying fallen to broken mixing cylinder 2
On, it can reach that mixing is acted on, material can be crushed again, reach and be sufficiently mixed uniform purpose.Due to being passed using belt
Dynamic, drive device can be arranged on outside evenly mixing device and reduction device, be on the one hand easy to assembling, be on the other hand easy to broken mixing electricity
Machine 19 radiates.Further, protective cover 22 is provided with driving belt 20, better ensures that the normal continuous fortune of drive device
OK.
In actual use, feed hopper 1 top connection material transferring equipment, material fallen from material transferring equipment into
During the cavity of hopper 1, due to conical baffled 21 stop, caking material, by preliminary depolymerization, can be kept away well under collision effect
Exempt from because material excessively results in blockage；Main shaft 3 rotates in the presence of drive device and drives broken mix in the working chamber of cylinder 2
Rotating disk is fallen into the broken working chamber for mixing cylinder 2 with plate rotation, material is mixed by hopper, is mixed positioned at broken in cylinder 2
The one-level in portion is mixed in disruption elements, and wherein one-level mixes plate 9 except in addition to axial dispersion, can also drive material to material
Hit, roll repeatedly by one-level mixing plate 9 and rotating disk first along the circular simplified bulky grain made in circumference flowing, material, work as thing
When between one-level blade 10 of the stream through mixing plate 9 positioned at one-level, the multigroup blade rotated at a high speed throws scattered, broken strongly, entirely
Portion's material is fractured into one-level increment (full water sample) of the mixed uniformly material particular diameter for≤13mm or≤6mm, here it is one-level
Level is broken, now, and material particular diameter falls according to measuring a part the need for setting for≤13mm or≤6mm one-level increment (full water sample)
Enter in the sample mouthful 17 of first-order reduction unit 4, be transported to by division pipe 14 in closed sample divider, into sample
The sample amount of mouth 17 can be adjusted by division ratio adjustment axis 16, thus obtain stablizing accurate division ratio；
Rest materials particle diameter continues to fall for≤13mm or≤6mm one-level increment (full water sample), into broken mixing cylinder 2
Interior bottom, two grades of bottom are mixed in disruption elements in broken mixing cylinder 2, the two grades of mixing plates 12 and two rotated at a high speed
Level blade 13 is stirred evenly, hit, throwing scattered and broken, and sample is further crushed into mixed uniformly material grain more than whole full moisture content
Footpath for≤3mm two grades of increments (analysis sample), here it is the second level is broken；
By this process, material particular diameter is evenly dispersed in the side of aggregate tube 6 for≤3mm two grades of increments (analysis sample)
Wall, falls into two grades of reduction devices 5, and a portion enters sample mouthful 17, and closed sample is transported to by division pipe 14
In product collector, after have collected representative sample, other clouts pass through elephant trunk centralized recovery under gravity.
Sample amount into sample mouthfuls 17 can be adjusted by division ratio adjustment axis 16, be allowed to obtain needs, stably
Division ratio.
During system above works, material mixes in cylinder 2 constantly convection current, spreads, stirs broken, crush,
The thorough dispersing depolymerization of caking material, so as to reach sufficiently broken and uniform mixing within the extremely short time, above two-stage is crushed
Moment completes (≤3 seconds) in a sealed working chamber with two-stage division, the moisture loss very little of material, it is also not possible to lose
Lose coal sample, effectively reduction sample preparation error.
Similarly, such as client's needs, increase by one group or multigroup mixing disruption elements in broken mixing cylinder 2 are mixed crushing
The even lateral wall of cylinder 2 sets scaler between being located at adjacent mixing disruption elements, so, just can get only three-level or more stages
Increment, meet the experiment coal sample of different-grain diameter.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. various broken mixing division combined sample making machine, it is characterised in that including feed hopper, connection is broken below the feed hopper
The axially arranged main shaft in middle part in cylinder, the broken mixing cylinder is mixed, the main shaft upper end, which passes to crush, mixes cylinder, the main shaft
Driven and rotated by drive device；The broken mixing cylinder internal upper part is provided with the broken mixing component of one-level, the broken mixing cylinder
Interior bottom is provided with two-stage crushing and mixes component, is located at the broken mixing component of one-level in the broken mixing cylinder lateral wall and two grades broken
First-order reduction unit, the broken bottom connection aggregate tube for mixing cylinder, in the outer of the aggregate tube are set between broken mixing component
Side wall sets two grades of reduction devices.
2. various broken mixing division combined sample making machine as claimed in claim 1, it is characterised in that the aggregate tube is taper
Cylinder.
3. various broken mixing division combined sample making machine as claimed in claim 1, it is characterised in that the one-level mixes broken
Component includes the multiple one-level rotating disks being set on the main shaft, and main shaft is from top to bottom fixedly mounted in multiple one-level rotating disks successively
On, in multiple one-level rotating disks, each of superposed one-level rotating disk is evenly equipped with multiple one-levels radially extended and mixed
Plate, each of remaining one-level rotating disk is evenly equipped with multiple one-level blades radially extended.
4. various broken mixing division combined sample making machine as described in claim 1 or 3, it is characterised in that two grades of mixings
Disruption elements include the multiple secondary turntables being set on the main shaft, and master is from top to bottom fixedly mounted in multiple secondary turntables successively
On axle, in multiple secondary turntables, each of superposed secondary turntable is evenly equipped with multiple two grades radially extended and mixed
Even plate, each of remaining secondary turntable is evenly equipped with multiple two grades of blades radially extended.
5. various broken mixing division combined sample making machine as claimed in claim 4, it is characterised in that the first-order reduction unit and
The structures of two grades of reduction devices is consistent, including division pipe, division motor and division ratio adjustment axis, the division pipe with it is interior
Chamber is connected, and the junction between the division pipe and the inner chamber is provided with the sample mouthful for division, and the division motor is set
Between the division pipe and the inner chamber, the division ratio adjustment axis is arranged on sample mouthful, the division ratio adjustment axis with
The output shaft of the division motor is fixedly connected.
6. various broken mixing division combined sample making machine as claimed in claim 5, it is characterised in that the division ratio adjustment axis
Radial section be semicircle or rectangle, the division ratio adjustment axis matches with sample mouth.
7. various broken mixing division combined sample making machine as claimed in claim 1, it is characterised in that in the broken mixing cylinder
It is provided with closure, the closure to be provided with one end of feed hopper and passes through through hole for the main shaft upper end,
Bearing is provided between the closure and the main shaft, the feed hopper is arranged above the closure and crushed with described
Mix cylinder connection.
8. various broken mixing division combined sample making machine as claimed in claim 1, it is characterised in that the cavity of the feed hopper
Interior middle part be provided with by cavity be divided into two it is conical baffled, the main shaft stretches out on closure and positioned at described conical baffled
Underface.
9. various broken mixing division combined sample making machine as claimed in claim 1, it is characterised in that the drive device includes
Broken to mix motor, driving wheel, driven pulley and driving belt, the driving wheel is connected with the broken output shaft for mixing motor, institute
State driven pulley to be arranged on main shaft, the driving belt is set on driving wheel and driven pulley.
10. various broken mixing division combined sample making machine as claimed in claim 5, it is characterised in that fall into the one-level contracting
The material particular diameter of the sample mouthful of point device is≤13mm or≤6mm one-level increment, falls into the material of the sample mouthful of two grades of reduction devices
Particle diameter for≤3mm two grades of increments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710378585.4A CN106969961B (en) | 2017-05-24 | 2017-05-24 | Multiple crushing, mixing, shrinkage dividing combined sampling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710378585.4A CN106969961B (en) | 2017-05-24 | 2017-05-24 | Multiple crushing, mixing, shrinkage dividing combined sampling machine |
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| CN106969961A true CN106969961A (en) | 2017-07-21 |
| CN106969961B CN106969961B (en) | 2023-09-22 |
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| CN201710378585.4A Active CN106969961B (en) | 2017-05-24 | 2017-05-24 | Multiple crushing, mixing, shrinkage dividing combined sampling machine |
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| CN108267338A (en) * | 2018-02-01 | 2018-07-10 | 珠海中电环保设备有限公司 | A kind of full-automatic coal is adopted, sample preparation and on-line analysis integral method |
| CN108332987A (en) * | 2018-02-01 | 2018-07-27 | 珠海中电环保设备有限公司 | A kind of full-automatic coal carrying out coal for train gathers and processes quadrat method |
| CN114813284A (en) * | 2022-05-19 | 2022-07-29 | 淮北矿业股份有限公司 | Coal slime sample preparation device and division control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108267338A (en) * | 2018-02-01 | 2018-07-10 | 珠海中电环保设备有限公司 | A kind of full-automatic coal is adopted, sample preparation and on-line analysis integral method |
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| CN114813284A (en) * | 2022-05-19 | 2022-07-29 | 淮北矿业股份有限公司 | Coal slime sample preparation device and division control method |
| CN114813284B (en) * | 2022-05-19 | 2023-02-03 | 淮北矿业股份有限公司 | Coal slime sample preparation device and division control method |
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|---|---|
| CN106969961B (en) | 2023-09-22 |
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