CN105944844B - A kind of dewatering and device of vacuum filter centrifugal dehydrator - Google Patents
A kind of dewatering and device of vacuum filter centrifugal dehydrator Download PDFInfo
- Publication number
- CN105944844B CN105944844B CN201610342729.6A CN201610342729A CN105944844B CN 105944844 B CN105944844 B CN 105944844B CN 201610342729 A CN201610342729 A CN 201610342729A CN 105944844 B CN105944844 B CN 105944844B
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- dewaterer
- sieve
- vacuum
- dehydration
- centrifugate
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- 230000018044 dehydration Effects 0.000 claims abstract description 30
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 230000014759 maintenance of location Effects 0.000 claims abstract description 4
- 239000008187 granular material Substances 0.000 claims abstract 2
- 239000007788 liquid Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000003250 coal slurry Substances 0.000 abstract description 16
- 239000013055 pulp slurry Substances 0.000 abstract description 15
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 6
- 239000003245 coal Substances 0.000 description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005119 centrifugation Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B15/00—Other accessories for centrifuges
- B04B15/08—Other accessories for centrifuges for ventilating or producing a vacuum in the centrifuge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/08—Rotary bowls
- B04B7/12—Inserts, e.g. armouring plates
- B04B7/16—Sieves or filters
Landscapes
- Centrifugal Separators (AREA)
Abstract
A kind of dewatering and device of vacuum filter centrifugal dehydrator, dewaterer include casing, feeding mouth, transmission device, spiral scraper, sieve and centrifugate outlet, and vacuum extractor is additionally provided on dewaterer, and the vacuum extractor is connected with centrifugate outlet；It is equipped with sealing device in dewaterer, dewaterer can be sealed.The raw material that will be dehydrated with transmission device, which is transmitted in the sieve of rotation, carries out centrifugal dehydration, also dewaterer is vacuumized using vacuum extractor while centrifugal dehydration, the present invention is to be dehydrated negative pressure of vacuum, centrifugal dehydration and adjustable screen gap reach reduction retention granule size and combine, the effect for vacuumizing and being dehydrated can be increased and reduce the loss of fine grained ore pulp or coal slurry, realize dehydration of the fine grained raw material on centrifugal dehydrator.
Description
Technical field
The present invention relates to a kind of filter centrifugation dewaterers, and in particular to a kind of centrifugal dehydrator with vacuum extractor.
Background technology
In the industries such as mineral processing, is handled by the broken and ore grinding to mineral, generate a large amount of mineral fines, pass through dense medium
And the techniques such as flotation, a large amount of ore pulps are generated, therefore need to be dehydrated to ore pulp.
The present invention is a kind of for floatation clean coal, middle coal, tail coal, primary slime, cyclone underflow and pipeline transportation coal
Terminal dewaterer.Currently, domestic each coal preparation plant mostly uses greatly two kinds of modes when handling 0.005 ~ 1.3mm fine coal slurries, without
Using centrifugal dehydrator:
1, vacuum filter.Though machine intensity filter is high but filter cake moisture is poor, filtrate quality is not high, expensive, structure
Greatly, take up an area extensively, pan feeding condition will be stablized, and vacuum sealing requires height, repair complicated.
2, chamber filter press.Though machine intensity filter is high, filter cake moisture is low, filtrate quality is good, expensive, structure for this
Greatly, take up an area extensively, long processing period, production cannot be continuous, and repair is complicated.
Find that following patent and the present invention have similarity by country's retrieval：
Application No. is CN201320134647.4, the practicality of entitled " a kind of decanter type dredging silt centrifugal dehydrator " is new
Type discloses a kind of decanter type dredging silt centrifugal dehydrator, be by driving wheel, rack, preceding taper outer cylinder, centre rotational axis,
Spray material port, rear rotary shaft, phegma mouth, mud charging nozzle, separating liquid outlet, helical blade, body, mud cake outlet,
Stand leg, filter residue extrusion, preceding rotary shaft form；It is equipped with spray material port using in the junction of centre rotational axis and rear rotary shaft,
Before effectively the mud of dredging silt can be ejected on the barrel of taper outer cylinder, convenient for solid particle in mud on barrel
Sedimentation, and the helical blade of the outside of preceding rotary shaft and centre rotational axis and rear rotary shaft can will be deposited in preceding taper
Solid particle on the barrel of outer cylinder, the front end filter residue extrusion of taper outer cylinder before being pressed to, in centrifugal force and extruding force
Under the action of be squeezed into mud discharge, have processing dredging silt amount it is big, processing speed is fast, the low advantage of production cost.
Application No. is 201410136554.4, the invention of entitled " vertical settling centrifugal dehydrator " centrifuges for vertical settling
Dewaterer belongs to centrifugal solid-liquid separator tool class equipment comprising：Motor drives upper and lower separation by belt pulley and bearing chamber
Room high speed rotates horizontally, and upper and lower sub-feed tube is equipped in upper and lower separation chamber, and upper and lower electromagnetism is equipped in one end of upper and lower separation chamber
Valve discharge gate.Conducting slip ring provides control power supply for upper and lower solenoid valve discharge gate.Upper separation chamber top be equipped with feed inlet and into
Expects pipe and liquid overflow pipe.Suspension enters upper and lower separation chamber through feed inlet and feed pipe and upper and lower sub-feed tube, passes through two-stage
It centrifuges, solid material is discharged by the way that slot is discharged by solid after upper and lower solenoid valve discharge gate to solid outlet, after clarification
Liquid material is finally discharged from water outlet by liquid overflow pipe, sink.The invention has achieved the purpose that high efficient solid and liquid separation, should
Equipment has many advantages, such as to automatically control, smooth running, low cost, energy consumption is small, treating capacity is big, equipment is durable, technical-economic index is advanced.
Application No. is 200720084085.1, the utility model of entitled " vertical continuous centrifugal dewaterer " is a kind of vertical
Continuous centrifugal dewaterer, including rack, upper rack are provided with the driving mechanism of driving spindle rotation, the frame lower suspension
It is fixed with a sand setting collection bucket, links a bottom plate in main shaft end, the separator assembly that can be rotated with main shaft is housed on bottom plate,
Separator assembly top is equipped with dispenser, and sand setting collection bucket lower part is equipped with liquid collection bucket, and collection bucket lower part is connected with discharge pipe,
The discharge pipe is stretched out from collection bucket outlet at bottom;The separator assembly includes being fixed in bottom plate and being in along the bottom plate
Regular polygon or several disengagement chambers of round setting, and the distributor in the space that above-mentioned several disengagement chambers are constituted;
This utility model is simple in structure, can detach thinner material, and processing capacity is big, and low energy consumption, can assign solid-liquid point compared with the slow-speed of revolution
From being suitable for the thickening of ore dressing plant dressing product, it can also be used to sewage disposal.
Although the above patent is all dewaterer, effect and principle have similarity, are not vacuumized in its structure
Device, cannot form negative pressure, and the effect of dehydration can be subject to certain restrictions.And gap and the sealing ring of sieve are not referred to yet
Deng raising vacuumizing effect, to improve the structures and methods of dehydrating effect, therefore there is larger difference with the present invention.
Invention content
The technical problem to be solved by the present invention is to：Still higher, the equipment for the moisture content of mineral after current dewaterer dehydration
Super large, high energy consumption, the low Zhuan Condition of efficiency propose that one kind is adaptable strong, and dehydrating effect is good, and space is small, continuous production
The energy-efficient fine mineral of low-cost high-efficiency process dehydration equipment.
Needle is with the above problem, technical solution proposed by the present invention：A kind of dewatering of vacuum filter centrifugal dehydrator,
The raw material that will be dehydrated with transmission device, which is transmitted in the sieve of rotation, carries out centrifugal dehydration, while centrifugal dehydration also
Dewaterer is vacuumized using vacuum extractor, improves the effect of dehydration.
Further, dewaterer vacuumize using vacuum extractor refer to：Go out equipped with centrifugate on dewaterer
Mouthful, conduit is set in centrifugate exit, is connected to by conduit between vacuum pump is exported with centrifugate, is started vacuum pump, make
Centrifugate exit can be vacuumized by obtaining vacuum pump.
Further, it also uses sealing device to being sealed in dewaterer, and passes through adjustable screen gap and adjusting
The cone angle of sieve reduces retention granularity, changing centrifuge can only be to coarse particulate matter to improve vacuumizing effect and dehydrating effect
Dehydration, realize dehydration of the fine grained raw material on centrifugal dehydrator.
Further, by adjustable screen gap, to adjust the amount of attachment granularity intensity and attachment of the raw material on sieve,
To adjust the suction strength that centrifugate exit is formed when vacuumizing to improve the effect of dehydration, the gap of sieve is
0.05mm-0.5mm。
Further, by the cone angle of adjustable screen, to adjust attachment time of the raw material on sieve, to improve raw material
Dehydrating effect, the cone angle of sieve is 15-30 degree.
Further, using sealing device to being sealed in dewaterer, improving the effect vacuumized refers to：Using sealing
Circle is sealed the both ends of sieve so that and the air in sieve will not be flowed to by the both ends of sieve in vacuum extractor, from
And improve vacuumizing effect and dehydrating effect.
A kind of dehydration device of vacuum filter centrifugal dehydrator, dewaterer include casing, feeding mouth, transmission device, spiral
Scraper, sieve and centrifugate outlet, are additionally provided with vacuum extractor on dewaterer, and the vacuum extractor connects with centrifugate outlet
It connects；It is equipped with sealing device in dewaterer, dewaterer can be sealed.
Further, vacuum extractor and centrifugate outlet connection are that vacuum pump is set on the outside of dewaterer, in vacuum pump
It is connected to by conduit between being exported with centrifugate.
Further, it is to set sealing ring at the sieve both ends of dewaterer that sealing device is set in dewaterer, to dewaterer
Sieve both ends are sealed.
Further, the gap of the sieve in dewaterer is 0.05mm-0.5mm, and the cone angle of sieve is 15-30 degree.
It is an advantage of the invention that：
1. being connected to by conduit between vacuum pump is exported with centrifugate, start vacuum pump so that vacuum pump can be to centrifugation
Liquid exit is vacuumized, to enhance the effect of dehydration.
2. using gap for 0.05mm-0.5mm, cone angle is the sieve of 15-30 degree, increases attachment grain of the raw material on sieve
The amount for spending intensity and attachment, to increase the effect vacuumized and reduce the loss of fine grained raw material.
3. being sealed to the both ends of sieve using sealing ring so that the air in sieve will not be flowed by the both ends of sieve
Into vacuum extractor, to improve the effect vacuumized.
Description of the drawings
Fig. 1 is the structural schematic diagram of embodiment one；
Fig. 2 is the structural schematic diagram of embodiment two；
In figure：1 feeding mouth, 2 sealing rings, 3 casings, 4 sieves, 5 spiral scrapers, the outlet of 6 centrifugates, 7 conduits, 8 vacuum pumps.
Specific implementation mode
The description of a step is done to the present invention with reference to embodiment and attached drawing：
Embodiment one
As shown in Figure 1, dewaterer includes casing 3, feeding mouth 1, spiral scraper 5, sieve 4 and centrifugate outlet 6.Centrifugation is de-
Water dispenser is vertical dewaterer, and for feeding mouth 1 in the top of dewaterer, sieve 4 and spiral scraper 5 are rotated around vertical direction
, ore pulp or coal slurry pour feeding mouth 1 into above dewaterer, can be discharged below dewaterer after dehydration.
Pour ore pulp or coal slurry into after feeding mouth 1 meeting, ore pulp or coal slurry can be sent in the sieve 4 of rotation, start electricity
Can be allowed after motivation sieve 4 rotate, to in sieve 4 ore pulp or coal slurry carry out centrifugal dehydration.Dewatered ore pulp or coal slurry
It is discharged from discharge port, and the moisture content in ore pulp or coal slurry then can enter centrifugate through sieve 4 in the effect of centrifugal dehydration and go out
At mouth 6.
In order to reduce the water content in ore pulp or coal slurry, it is equipped with vacuum pump 8 in the outside of dewaterer, 6 are exported in centrifugate
Setting conduit 7 in place's will be connected to by conduit 7 between vacuum pump 8 and centrifugate outlet 6, start vacuum pump 8 so that 8 energy of vacuum pump
To being vacuumized at centrifugate outlet 6.Centrifugate exports a side contacts of 6 and sieve 4, is attached on the other side of sieve 4
The raw material being dehydrated can form negative pressure when vacuum pump 8 at centrifugate outlet 6 to vacuumizing in 4 outside of sieve.
After 4 outside of sieve forms negative pressure, it can further enhance the effect of dehydration, containing in reduction ore pulp or coal slurry
Water.But the gap at 4 both ends of sieve influences whether the suction strength in 4 outside of sieve.
In order to increase the suction strength in 4 outside of sieve, the both ends of sieve 4 are sealed using sealing ring 2 so that sieve
Air in 4 will not be flowed to by the both ends of sieve 4 in vacuum extractor, be vacuumized to improve the suction strength and raising
And the effect of dehydration.
In addition, 4 gap of sieve is smaller, ore pulp or coal slurry centrifugal filtration, vacuumize when, across 4 gap of sieve flow to from
The ore pulp or coal slurry of the ultra-fine grain of heart liquid outlet 6 are fewer.That is, 4 gap of sieve is smaller, retention granularity is also got over
It is small.Therefore 4 gap of sieve is sufficiently small, could be dehydrated to the ultra-fine grain ore pulp or coal slurry of 0.05 ~ 1.5mm, the present embodiment
In, the gap of sieve 4 is preferably 0.1mm-0.5mm.
By the cone angle of adjustable screen 4, attachment time of the raw material on sieve 4 can be adjusted, to improve ore pulp or coal slurry
Dewatering time, and then improve the dehydrating effect of ore pulp or coal slurry.In the present embodiment, the cone angle of sieve 4 is preferably 15-30 degree.
Embodiment two
As shown in Fig. 2, unlike embodiment one：Centrifugal dehydrator is horizontal dewaterer, pan feeding in the present embodiment
Mouthful 1 in the side of dewaterer, and sieve 4 and spiral scraper 5 are rotated around transverse direction, and ore pulp or coal slurry are from the side of dewaterer
It pours feeding mouth 1 into, can be removed from the other side of dewaterer after dehydration.
In addition in the present embodiment, centrifugate outlet 6, conduit 7, the components such as spiral scraper 5 position and structure also with implementation
Example one is different, but it is similar that it, which vacuumizes and enhance the principle of dehydrating effect and method,.
It will be apparent that without departing from the principles of the present invention, several improvement or modification made are regarded as this
The protection domain of invention.
Claims (8)
1. a kind of dewatering of vacuum filter centrifugal dehydrator, the raw material that will be dehydrated with transmission device are transmitted to rotation
Sieve（4）Middle carry out centrifugal dehydration, which is characterized in that while centrifugal dehydration also use vacuum extractor to dewaterer into
Row vacuumizes, and improves the effect of dehydration；Dewaterer vacuumize using vacuum extractor refer to：On dewaterer be equipped with from
Heart liquid exports（6）, exported in centrifugate（6）Place's setting conduit（7）, by vacuum pump（8）It is exported with centrifugate（6）Between by leading
Pipe（7）Connection starts vacuum pump（8）So that vacuum pump（8）Centrifugate can be exported（6）Place is vacuumized；Also using sealing
Device in dewaterer to being sealed, and passes through adjustable screen（4）Gap and adjustable screen（4）Cone angle, come improve take out it is true
Empty effect and dehydrating effect reduce retention granularity, realize dehydration of the fine grained raw material on centrifugal dehydrator.
2. a kind of dewatering of vacuum filter centrifugal dehydrator according to claim 1, which is characterized in that pass through adjusting
Sieve（4）Gap, to adjust raw material in sieve（4）The granule size of upper attachment and the amount of attachment, to adjust vacuumize when from
Heart liquid exports（6）Locate the suction strength formed to improve the effect of dehydration, sieve（4）Gap be 0.05mm-0.5mm.
3. a kind of dewatering of vacuum filter centrifugal dehydrator according to claim 1, which is characterized in that pass through adjusting
Sieve（4）Cone angle, to adjust raw material in sieve（4）On the attachment time, to improve the dehydrating effect of raw material, sieve（4）
Cone angle be 15-30 degree.
4. a kind of dewatering of vacuum filter centrifugal dehydrator according to claim 1, which is characterized in that using sealing
To being sealed in dewaterer, improve the effect vacuumized refers to device：Using sealing ring（2）To sieve（4）Both ends carry out
Sealing so that sieve（4）In air will not pass through sieve（4）Both ends flow in vacuum extractor, to improve vacuumize
Effect and dehydrating effect.
5. the dehydration device of dewatering production according to claim 1, dewaterer includes casing（3）, feeding mouth（1）、
Transmission device, spiral scraper（5）, sieve（4）It is exported with centrifugate（6）, which is characterized in that it is additionally provided with and vacuumizes on dewaterer
Device, the vacuum extractor are exported with centrifugate（6）Connection；It is equipped with sealing device in dewaterer, dewaterer can be carried out
Sealing.
6. a kind of dehydration device of vacuum filter centrifugal dehydrator according to claim 5, which is characterized in that vacuum means
It sets and is exported with centrifugate（6）Connection is that vacuum pump is set on the outside of dewaterer（8）, in vacuum pump（8）It is exported with centrifugate（6）It
Between pass through conduit（7）Connection.
7. a kind of dehydration device of vacuum filter centrifugal dehydrator according to claim 5, which is characterized in that in dewaterer
It is the sieve in dewaterer inside to set sealing device（4）Both ends set sealing ring（2）, to the sieve of dewaterer（4）Both ends are sealed.
8. a kind of dehydration device of vacuum filter centrifugal dehydrator according to claim 7, which is characterized in that in dewaterer
Sieve（4）Gap be 0.05mm-0.5mm, sieve（4）Cone angle be 15-30 degree.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610342729.6A CN105944844B (en) | 2016-05-23 | 2016-05-23 | A kind of dewatering and device of vacuum filter centrifugal dehydrator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610342729.6A CN105944844B (en) | 2016-05-23 | 2016-05-23 | A kind of dewatering and device of vacuum filter centrifugal dehydrator |
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| CN105944844A CN105944844A (en) | 2016-09-21 |
| CN105944844B true CN105944844B (en) | 2018-09-25 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7118590B2 (en) * | 2017-02-01 | 2022-08-16 | オルガノ株式会社 | Centrifugal Filter and Method for Capturing and Observing Fine Particles in Liquid Using the Same |
| CN107755018A (en) * | 2017-11-23 | 2018-03-06 | 恩平市弘彩数码科技有限公司 | A kind of nano-level grinder gap separator |
| CN107899673B (en) * | 2017-12-13 | 2023-04-07 | 瑞安市永历制药机械有限公司 | Ultrafine grinder |
| CN114602941A (en) * | 2022-03-03 | 2022-06-10 | 环创(厦门）科技股份有限公司 | Broken cleaning equipment of metal packaging container |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2116530U (en) * | 1991-07-19 | 1992-09-23 | 胡文宇 | Vertical centrifugal vacuum dewatering machine |
| CN201423314Y (en) * | 2009-02-27 | 2010-03-17 | 史志铭 | Centrifugal rotor for filtering high-temperature melt body |
| CN201720132U (en) * | 2010-06-24 | 2011-01-26 | 安徽贝克联合制药有限公司 | Centrifuge vacuum discharge system |
| CN204380374U (en) * | 2014-12-31 | 2015-06-10 | 贵州大学 | Novel high-efficiency and energy-saving tailing dry arranging device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6817970B2 (en) * | 2002-06-17 | 2004-11-16 | Large Scale Biology Corporation | Centrifuge for extracting interstitial fluid |
-
2016
- 2016-05-23 CN CN201610342729.6A patent/CN105944844B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2116530U (en) * | 1991-07-19 | 1992-09-23 | 胡文宇 | Vertical centrifugal vacuum dewatering machine |
| CN201423314Y (en) * | 2009-02-27 | 2010-03-17 | 史志铭 | Centrifugal rotor for filtering high-temperature melt body |
| CN201720132U (en) * | 2010-06-24 | 2011-01-26 | 安徽贝克联合制药有限公司 | Centrifuge vacuum discharge system |
| CN204380374U (en) * | 2014-12-31 | 2015-06-10 | 贵州大学 | Novel high-efficiency and energy-saving tailing dry arranging device |
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| CN105944844A (en) | 2016-09-21 |
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