CN105944844A - Dehydration method and device of vacuum filtration centrifugal dehydrator - Google Patents
Dehydration method and device of vacuum filtration centrifugal dehydrator Download PDFInfo
- Publication number
- CN105944844A CN105944844A CN201610342729.6A CN201610342729A CN105944844A CN 105944844 A CN105944844 A CN 105944844A CN 201610342729 A CN201610342729 A CN 201610342729A CN 105944844 A CN105944844 A CN 105944844A
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- Prior art keywords
- dewaterer
- screen cloth
- vacuum
- dehydration
- centrifugal
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- 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
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- 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
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- Centrifugal Separators (AREA)
Abstract
The invention discloses a dehydration method and device of a vacuum filtration centrifugal dehydrator. The dehydrator comprises a shell, a feed port, a conveying device, a spiral scraper, a screen and a centrifugate outlet; a vacuumizing device is arranged on the dehydrator, and is connected with the centrifugate outlet; and a sealing device is arranged in the dehydrator for sealing the dehydrator. The conveying device is used for conveying raw materials to be dehydrated into the rotating screen for centrifugal dehydration; and the dehydrator is vacuumized by the vacuumizing device while centrifugal dehydration is performed. The vacuum negative-pressure dehydration, the centrifugal dehydration and the reduction of an interception particle size through adjustment of gaps of the screen are combined to improve the vacuumizing and dehydrating effects and to reduce the loss of fine particle pulp or coal slurry; and the dehydration of fine particle raw materials on the centrifugal dehydrator is realized.
Description
Technical field
The present invention relates to a kind of filter centrifugation dewaterer, be specifically related to the centrifugal dehydrator of a kind of band vacuum extractor.
Background technology
In the industries such as mineral processing, by mineral being crushed and ore grinding process, produce a large amount of mineral fine, by the technique such as dense medium and flotation, produce a large amount of ore pulp, therefore need ore pulp is dehydrated.
The present invention is a kind of terminal dewaterer for floatation clean coal, middle coal, tail coal, primary slime, cyclone underflow and pipeline transportation coal.At present, domestic each coal preparation plant, when processing 0.005 ~ 1.3mm fine coal slurry, uses two kinds of modes mostly, and not with centrifugal dehydrator:
1, vacuum filter.Though this machine intensity filter is high but filter cake moisture is poor, filtrate quality is the highest, expensive, and structure is big, takes up an area wide, and pan feeding condition to be stablized, and vacuum seal request is high, maintenance complexity.
2, chamber filter press.Though this machine intensity filter is high, filter cake moisture is low, filtrate quality good, but expensive, structure is big, takes up an area wide, long processing period, and production can not be continuous, maintenance complexity.
Find that following patent and the present invention have a similarity by domestic retrieval:
Application No. CN201320134647.4, a kind of decanter type dredging silt centrifugal dehydrator of the disclosure of the invention of entitled " a kind of decanter type dredging silt centrifugal dehydrator ", by drive, frame, front taper outer cylinder, centre rotational axis, spray material port, rear rotary shaft, backflow mouth, the mud charging mouth of pipe, separate liquid outlet, helical blade, body, mud cake outlet, stand leg, filtering residue extrusion, front rotary shaft form；Use and be provided with spray material port in the junction of centre rotational axis and rear rotary shaft, effectively the mud of dredging silt can be ejected on the barrel of front taper outer cylinder, it is easy to solid particle sedimentation on barrel in mud, and the helical blade of the outside of front rotary shaft and centre rotational axis and rear rotary shaft, can be by the solid particle on the barrel being deposited in front taper outer cylinder, it is pressed to the front end filtering residue extrusion of front taper outer cylinder, under the effect of centrifugal force and extruding force, it is squeezed into mud discharge, there is process dredging silt amount big, processing speed is fast, the advantage that production cost is low.
Application No. 201410136554.4, the invention of entitled " vertical settling centrifugal dehydrator " is vertical settling centrifugal dehydrator, belong to centrifugal solid-liquid separator tool kind equipment, comprising: motor drives the horizontal rotation at a high speed of upper and lower separation chamber by belt pulley and bearing chamber, in upper and lower separation chamber, it is provided with upper and lower sub-feed tube, is provided with upper and lower electromagnetic valve discharge gate in one end of upper and lower separation chamber.Conducting slip ring provides for upper and lower electromagnetic valve discharge gate and controls power supply.It is provided with charging aperture and feed pipe and liquid overflow pipe on top, upper separation chamber.Suspension enters upper and lower separation chamber through charging aperture and feed pipe and upper and lower sub-feed tube, separated by two-stage centrifugal, solid material is by being discharged by solid drain tank to solids exit mouth after upper and lower electromagnetic valve discharge gate, and the liquid material after clarification is finally discharged from outlet by liquid overflow pipe, tank.This invention has reached the purpose of high efficient solid and liquid separation, and this equipment has advantages such as automatically controlling, smooth running, cost are low, energy consumption is little, treating capacity is big, equipment is durable, technical-economic index is advanced.
Application No. 200720084085.1, the invention of entitled " vertical continuous centrifugal dewaterer " is a kind of vertical continuous centrifugal dewaterer, including frame, upper rack is provided with the drive mechanism that drive shaft rotates, described frame lower hangs and is fixed with a sand setting collection bucket, a base plate is linked at main shaft end, equipped with the separator assembly that can rotate with main shaft on base plate, on separator assembly top equipped with dispenser, sand setting collection bucket bottom is provided with liquid collection bucket, collection bucket bottom connects has discharge pipe, described discharge pipe to stretch out from collection bucket outlet at bottom;Described separator assembly includes being fixed in bottom plate and is regular polygon or circular several disengagement chambers arranged along this base plate, and is arranged on the allotter in the space that above-mentioned some disengagement chambers are constituted;This inventive structure is simple, can separate thinner material, and greatly, energy consumption is low, can be issued to solid-liquid separation in the relatively slow-speed of revolution for disposal ability, is suitable for the thickening of ore dressing plant dressing product it can also be used to sewage disposal.
Although above patent is all dewaterer, its effect and principle have similarity, but do not have the device of evacuation in its structure, it is impossible to forming negative pressure, the effect of dehydration can be subject to certain restrictions.And the gap of the most not mentioned screen cloth and sealing ring etc. improve vacuumizing effect, thus improve the structures and methods of dehydrating effect, therefore have from the present invention bigger different.
Summary of the invention
The technical problem to be solved in the present invention is: the most higher for the moisture content of mineral after current dewaterer dehydration, equipment super large, energy consumption is high, inefficient shape, propose one and there is strong adaptability, dehydrating effect is good, and occupation of land space is little, the fine mineral processing dehydration equipment that quantity-produced low-cost high-efficiency is energy-conservation.
Pin is with the problems referred to above, the technical scheme that the present invention proposes is: the dewatering of a kind of vacuum filter centrifugation dewaterer, the raw material that will carry out being dehydrated with transporter is sent in the screen cloth rotated be centrifuged dehydration, also use vacuum extractor that dewaterer carries out evacuation while centrifuge dehydration, improve the effect of dehydration.
Further, use vacuum extractor that dewaterer is carried out evacuation to refer to: on dewaterer, be provided with centrifugal liquid outlet, in centrifugal liquid exit, vacuum pipeline is set, connected by vacuum pipeline between vacuum pump is exported with centrifugal liquid, start vacuum pump so that vacuum pump can carry out evacuation to centrifugal liquid exit.
Further, sealing device is also used to seal in dewaterer, and by adjustable screen gap and the cone angle of adjustable screen, improve vacuumizing effect and dehydrating effect, reduce and retain granularity, changing centrifuge can only be to the dehydration of coarse particulate matter, it is achieved the dehydration on centrifugal dehydrator of the fine grained raw material.
Further, by adjustable screen gap, regulating raw material attachment granularity intensity on screen cloth and the amount of attachment, thus the suction strength that when regulating evacuation, centrifugal liquid exit is formed is to improve the effect of dehydration, the gap of screen cloth is 0.05mm-0.5mm.
Further, by the cone angle of adjustable screen, regulating the raw material attachment time on screen cloth, thus improve the dehydrating effect of raw material, the cone angle of screen cloth is 15-30 degree.
Further, sealing device is used to seal in dewaterer, the effect improving evacuation refers to: use sealing ring to seal the two ends of screen cloth so that the air in screen cloth will not be flowed in vacuum extractor by the two ends of screen cloth, thus improves vacuumizing effect and dehydrating effect.
The dehydration device of a kind of vacuum filter centrifugation dewaterer, dewaterer includes casing, feeding mouth, transporter, spiral scraper, screen cloth and centrifugal liquid outlet, is additionally provided with vacuum extractor on dewaterer, and described vacuum extractor is connected with centrifugal liquid outlet；In dewaterer, it is provided with sealing device, dewaterer can be sealed.
Further, it is that the outside at dewaterer sets vacuum pump that vacuum extractor is connected with centrifugal liquid outlet, is connected by conduit between vacuum pump exports with centrifugal liquid.
Further, setting sealing device in dewaterer is to set sealing ring at the screen cloth two ends of dewaterer, seals the screen cloth two ends of dewaterer.
Further, the gap of the screen cloth in dewaterer is 0.05mm-0.5mm, and the cone angle of screen cloth is 15-30 degree.
The invention have the advantage that
1. connected by vacuum pipeline between vacuum pump being exported with centrifugal liquid, start vacuum pump so that vacuum pump can carry out evacuation to centrifugal liquid exit, thus strengthens the effect of dehydration.
2. using gap is 0.05mm-0.5mm, and cone angle is the screen cloth of 15-30 degree, increases raw material attachment granularity intensity on screen cloth and the amount of attachment, thus increases the effect of evacuation and reduce the loss of fine grained raw material.
3. use sealing ring that the two ends of screen cloth are sealed so that the air in screen cloth will not be flowed in vacuum extractor by the two ends of screen cloth, thus improves the effect of evacuation.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment one；
Fig. 2 is the structural representation of embodiment two；
In figure: 1 feeding mouth, 2 sealing rings, 3 casing, 4 screen clothes, 5 spiral scrapers, 6 centrifugal liquid outlets, 7 conduits, 8 vacuum pumps.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is done the description of a step:
Embodiment one
As it is shown in figure 1, dewaterer includes casing 3, feeding mouth 1, spiral scraper 5, screen cloth 4 and centrifugal liquid outlet 6.Centrifugal dehydrator is vertical dewaterer, and feeding mouth 1 is above dewaterer, and screen cloth 4 and spiral scraper 5 all rotate around vertical direction, and ore pulp or coal slurry pour feeding mouth 1 above dewaterer into, drainage can go out after dehydration below dewaterer.
Ore pulp or coal slurry are poured into meeting after feeding mouth 1, ore pulp or coal slurry can be sent in the screen cloth 4 rotated, screen cloth 4 can be allowed after actuating motor to rotate, thus the ore pulp in screen cloth 4 or coal slurry are centrifuged dehydration.Ore pulp or coal slurry after dehydration are discharged from discharging opening, and the moisture content in ore pulp or coal slurry then can enter into centrifugal liquid in the effect of centrifuge dehydration through screen cloth 4 and export at 6.
In order to reduce the water content in ore pulp or coal slurry, it is provided with vacuum pump 8 in the outside of dewaterer, exports in centrifugal liquid and vacuum pipeline 7 is set at 6, will be connected by vacuum pipeline 7 between vacuum pump 8 with centrifugal liquid outlet 6, start vacuum pump 8 so that centrifugal liquid can be exported and carry out evacuation at 6 by vacuum pump 8.Centrifugal liquid outlet 6 and a side contacts of screen cloth 4, the opposite side of screen cloth 4 is attached with the raw material carrying out being dehydrated, and centrifugal liquid is exported when carrying out evacuation at 6 by vacuum pump 8, can form negative pressure in screen cloth 4 outside.
After screen cloth 4 outside forms negative pressure, can further strengthen the effect of dehydration, reduce the water content in ore pulp or coal slurry.But the gap at screen cloth 4 two ends influences whether the suction strength outside screen cloth 4.
In order to increase the suction strength outside screen cloth 4, use sealing ring 2 that the two ends of screen cloth 4 are sealed, air in screen cloth 4 will not be flowed in vacuum extractor by the two ends of screen cloth 4, thus improve described suction strength and improve evacuation and the effect of dehydration.
It addition, screen cloth 4 gap is the least, ore pulp or coal slurry are when centrifugal filtration, evacuation, and the ore pulp or the coal slurry that flow to the ultra-fine grain of centrifugal liquid outlet 6 through screen cloth 4 gap are the fewest.It is to say, screen cloth 4 gap is the least, retain granularity the least.Therefore screen cloth 4 gap is sufficiently small, could be dehydrated the ultra-fine grain ore pulp of 0.05 ~ 1.5mm or coal slurry, and in the present embodiment, the gap of screen cloth 4 is preferably 0.1mm-0.5mm.
By the cone angle of adjustable screen 4, the raw material attachment time on screen cloth 4 can be regulated, thus improve the dewatering time of ore pulp or coal slurry, and then improve ore pulp or the dehydrating effect of coal slurry.In the present embodiment, the cone angle of screen cloth 4 is preferably 15-30 degree.
Embodiment two
As shown in Figure 2, unlike embodiment one: in the present embodiment, centrifugal dehydrator is horizontal dewaterer, feeding mouth 1 is in the side of dewaterer, screen cloth 4 and spiral scraper 5 all rotate around transverse direction, ore pulp or coal slurry pour feeding mouth 1 into from the side of dewaterer, can remove from the opposite side of dewaterer after dehydration.
Additionally in the present embodiment, position and the structure of the parts such as centrifugal liquid outlet 6, conduit 7, spiral scraper 5 are also different from embodiment one, but its evacuation and the principle of enhancing dehydrating effect and method are close.
It will be apparent that on the premise of without departing from principle of the present invention, the some improvement made or modification are regarded as protection scope of the present invention.
Claims (10)
1. the dewatering of a vacuum filter centrifugation dewaterer, the raw material that will carry out being dehydrated with transporter is sent in the screen cloth (4) rotated be centrifuged dehydration, it is characterized in that, also use vacuum extractor that dewaterer carries out evacuation while centrifuge dehydration, improve the effect of dehydration.
The dewatering of a kind of vacuum filter centrifugation dewaterer the most according to claim 1, it is characterized in that, use vacuum extractor that dewaterer is carried out evacuation to refer to: on dewaterer, be provided with centrifugal liquid outlet (6), at centrifugal liquid outlet (6) place, vacuum pipeline (7) is set, to be connected by vacuum pipeline (7) between vacuum pump (8) with centrifugal liquid outlet (6), start vacuum pump (8) so that vacuum pump (8) can export (6) place and carry out evacuation centrifugal liquid.
The dewatering of a kind of vacuum filter centrifugation dewaterer the most according to claim 2, it is characterized in that, sealing device is also used to seal in dewaterer, and by adjustable screen (4) gap and the cone angle of adjustable screen (4), improve vacuumizing effect and dehydrating effect, reduce and retain granularity, it is achieved the dehydration on centrifugal dehydrator of the fine grained raw material.
The dewatering of a kind of vacuum filter centrifugation dewaterer the most according to claim 3, it is characterized in that, by adjustable screen (4) gap, regulate raw material in the upper granule size adhered to of screen cloth (4) and the amount of attachment, thus the suction strength that when regulating evacuation, centrifugal liquid outlet (6) place is formed is to improve the effect of dehydration, the gap of screen cloth (4) is 0.05mm-0.5mm.
The dewatering of a kind of vacuum filter centrifugation dewaterer the most according to claim 3, it is characterized in that, by the cone angle of adjustable screen (4), regulate the raw material attachment time on screen cloth (4), thus improving the dehydrating effect of raw material, the cone angle of screen cloth (4) is 15-30 degree.
The dewatering of a kind of vacuum filter centrifugation dewaterer the most according to claim 3, it is characterized in that, sealing device is used to seal in dewaterer, the effect improving evacuation refers to: use sealing ring (2) to seal the two ends of screen cloth (4), air in screen cloth (4) will not be flowed in vacuum extractor by the two ends of screen cloth (4), thus improve vacuumizing effect and dehydrating effect.
7. the dehydration device of a vacuum filter centrifugation dewaterer, dewaterer includes casing (3), feeding mouth (1), transporter, spiral scraper (5), screen cloth (4) and centrifugal liquid outlet (6), it is characterized in that, being additionally provided with vacuum extractor on dewaterer, described vacuum extractor is connected with centrifugal liquid outlet (6)；In dewaterer, it is provided with sealing device, dewaterer can be sealed.
The dehydration device of a kind of vacuum filter centrifugation dewaterer the most according to claim 7, it is characterized in that, it is to set vacuum pump (8) in the outside of dewaterer that vacuum extractor is connected with centrifugal liquid outlet (6), is connected by conduit (7) between vacuum pump (8) with centrifugal liquid outlet (6).
The dehydration device of a kind of vacuum filter centrifugation dewaterer the most according to claim 7, it is characterised in that setting sealing device in dewaterer is to set sealing ring (2) at screen cloth (4) two ends of dewaterer, seals screen cloth (4) two ends of dewaterer.
The dehydration device of a kind of vacuum filter centrifugation dewaterer the most according to claim 9, it is characterised in that the gap of the screen cloth (4) in dewaterer is 0.05mm-0.5mm, and the cone angle of screen cloth (4) is 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 |
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| 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 true CN105944844A (en) | 2016-09-21 |
| CN105944844B CN105944844B (en) | 2018-09-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107899673A (en) * | 2017-12-13 | 2018-04-13 | 瑞安市永历制药机械有限公司 | A kind of micronizer |
| TWI735735B (en) * | 2017-02-01 | 2021-08-11 | 日商奧璐佳瑙股份有限公司 | Centrifugal filter and capture/observation method for microparticles in liquid using same |
| 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 (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2116530U (en) * | 1991-07-19 | 1992-09-23 | 胡文宇 | Vertical centrifugal vacuum dewatering machine |
| US20030232711A1 (en) * | 2002-06-17 | 2003-12-18 | Berit Bradley I. | Centrifuge for extracting interstitial fluid |
| 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 |
-
2016
- 2016-05-23 CN CN201610342729.6A patent/CN105944844B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2116530U (en) * | 1991-07-19 | 1992-09-23 | 胡文宇 | Vertical centrifugal vacuum dewatering machine |
| US20030232711A1 (en) * | 2002-06-17 | 2003-12-18 | Berit Bradley I. | Centrifuge for extracting interstitial fluid |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI735735B (en) * | 2017-02-01 | 2021-08-11 | 日商奧璐佳瑙股份有限公司 | Centrifugal filter and capture/observation method for microparticles in liquid using 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 |
| CN107899673A (en) * | 2017-12-13 | 2018-04-13 | 瑞安市永历制药机械有限公司 | A kind of micronizer |
| 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 |
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| CN105944844B (en) | 2018-09-25 |
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