CN107158761A - A kind of centrifugal dehumidifier for separating gypsum - Google Patents
A kind of centrifugal dehumidifier for separating gypsum Download PDFInfo
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- CN107158761A CN107158761A CN201710478995.6A CN201710478995A CN107158761A CN 107158761 A CN107158761 A CN 107158761A CN 201710478995 A CN201710478995 A CN 201710478995A CN 107158761 A CN107158761 A CN 107158761A
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- rotary drum
- flat mouth
- long flat
- gypsum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0006—Settling tanks provided with means for cleaning and maintenance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/18—Construction of the scrapers or the driving mechanisms for settling tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2405—Feed mechanisms for settling tanks
- B01D21/2416—Liquid distributors with a plurality of feed points
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- Chemical Kinetics & Catalysis (AREA)
- Centrifugal Separators (AREA)
Abstract
The present invention relates to fume treatment technical field, more particularly to a kind of centrifugal dehumidifier for separating gypsum.The present apparatus includes the enterprising expects pipe and lower feed pipe that shell body, rotary drum and outlet are located in rotary drum, the outside conveying equipment of two feed pipe entrance points connection, the exit of two feed pipes is provided with the discharging long flat mouth discharged for radial direction, slurry injection direction is consistent with the rotation direction of rotary drum at the grout outlet of the discharging long flat mouth, and slurry spray regime is covered each by the upper half compass screen surface and lower half compass screen surface of rotary drum at the grout outlet for the long flat mouth that discharged at the grout outlet of long flat mouth that discharged at enterprising expects pipe at slurry spray regime and lower feed pipe；Sluicing pipe and scraper mechanism are also set up in the side of above-mentioned feed pipe.The present apparatus provides the operating platform of standardization and precision for the follow-up dewater treatment of Gypsum slurry in limestone/lime gypsum wet sulfur removal technology, can be while reduction environmental threat be spent, the gypsum product of extremely high-quality can also be produced, production efficiency can be also effectively ensured.
Description
Technical field
The present invention relates to fume treatment technical field, more particularly to a kind of centrifugal dehumidifier for separating gypsum.
Background technology
Lime stone (lime)-gypsum wet desulfurization is the major way of current electric power and coloured industry flue gas desulfurization, and it has
Have the advantages that technical maturity is reliable, desulfuration efficiency is high, desulfurizing agent raw material sources abundant, by-produced gypsum can be comprehensively utilized.Electric power
Industry is big due to treatment quantity, and SO 2 from fume concentration is higher, generally uses lime masonry desulfurizing agent；Such as relieving haperacidity tail gas dioxy
Change sulphur concentration low, less, being limited for live physical condition also can make desulfurizing agent to exhaust gas volumn using lime.Desulfurizer it is main by
The parts such as desulfurizing tower, pH value adjustment tank, oxidizing tower, Separation of gypsum and raw material supply are constituted.Relieving haperacidity tail gas is by desulfurizing tower reverse jet tube
Into absorbent is pumped into reverse jet tube nozzle by circulating, gas-liquid two-phase counter current contacting.Collecting tank (desulfurizing tower bottom) sets stirring
Pump, and automatic liquid level control, slurries are conveyed to pH value adjustment tank, are sent to oxidizing tower after adjusting slurry pH value with sulfuric acid, are used Roots
Blower fan blasts air to oxidizing tower makes inferior sulfate radical become sulfate radical, and the slurries after oxidation are pumped up setting into concentrator, homogeneous
It is standby, then by centrifuge dewatering, output gypsum, supernatant returns to filtrate receiver.Gypsum slurries are scrubbed again, dehydration forms gypsum production
After product, gypsum storage is delivered to by conveyer and is located in and is stored.
In above-mentioned wet desulfurizing process, the generation of gypsum product is one of intermediate portions.The quality of gypsum product quality,
Biochemical indicator, impurity content and post processing production cost of discharge liquor etc. are decide, is the most key link.At present, gypsum
Production link is without ripe technique and complete set of equipments, and technological parameter is not specific, and supporting equipment is also unsound, causes most of
In the situation that producer gropes still in technology at present, either to critical process route or main technologic parameters, even match somebody with somebody
The concept without sharpening such as the specific requirement of complete equipment and correlation, so that limestone/lime-gypsum wet method
The quality of gypsum product in sulfur removal technology cannot tell the good from the bad, and quality grade difference is very big.Because no concrete technology and system are made
To compare, therefore also complete, reliable scheme can not be proposed for the improvement of gypsum product quality, on the one hand cause the city of enterprise
Field competitiveness reduction, on the other hand also causes the impurity content in discharge liquor high, and biochemical indicator height is larger to environmental threat.
The content of the invention
The purpose of the present invention be overcome above-mentioned the deficiencies in the prior art there is provided suitable for a kind of practical separation gypsum from
Heart dehydration device, the present apparatus provides for the follow-up dewater treatment of Gypsum slurry in limestone/lime-gypsum wet desulfurizing process
Standardization and the operating platform of precision, can be while reduction environmental threat be spent, moreover it is possible to produce the gypsum production of extremely high-quality
Product, production efficiency can be also effectively ensured.
To achieve the above object, present invention employs following technical scheme：
A kind of centrifugal dehumidifier for separating gypsum, it is characterised in that：The present apparatus includes possessing the cylindric of closing inner chamber
Shell body, coaxially arranged in the closing inner chamber of shell body to have rotary drum, an axial end of the rotary drum is arranged for driving this turn
Drum produces the power part of revolution action；The present apparatus also includes the enterprising expects pipe being parallelly disposed with respect to one another and lower feed pipe, two feed pipes
The outside conveying equipment of entrance point connection, the exit of two feed pipes is provided with the discharging long flat mouth discharged for radial direction；It is described
The long flat mouth profile that discharges is terraced in the grout outlet small trapezoidal shape of stock inlet greatly, the trapezoidal base composition grout outlet of discharging long flat mouth
Shape top margin constitutes the stock inlet of the corresponding feed pipe outlet of connection, and the grout outlet profile of the discharging long flat mouth is in rectangular strip and should
Grout outlet length direction parallel drum axis direction；The rotation of slurry injection direction and rotary drum at the grout outlet of the discharging long flat mouth
Discharge the pulp of long flat mouth of being discharged at slurry spray regime and lower feed pipe at the grout outlet of long flat mouth to consistent, at enterprising expects pipe
Slurry spray regime is covered each by the upper half compass screen surface and lower half compass screen surface of rotary drum at mouthful；Use is additionally provided with the side of above-mentioned feed pipe
In the sluicing pipe that detergent is sprayed into rotary drum and for carrying out the scraper mechanism that gypsum strikes off to side net wall in rotary drum.
The grout outlet width of the discharging long flat mouth is 10mm.
The rotary drum axis plumbing arrangement, sluicing pipe and the equal parallel drum axis of each feed pipe axis；Sluicing pipe is located at
It is densely covered with pipe shaft in rotary drum for increasing the nozzle of detergent spouting velocity；It is each adjacent on the axial length direction of sluicing pipe
The detergent emission direction of nozzle is intersected with each other and is directed in rotary drum at side net wall.
The scraper mechanism includes the hinging supporting shaft axially stretched into along rotary drum in rotary drum, and the rod end of hinging supporting shaft is corresponding to rotary drum
Revolution is constituted between end to coordinate；The side of hinging supporting shaft, which extends radially outwardly, scraping cutter bar, the affixed blade in top of scraping cutter bar, blade
The edge of a knife points to rotary drum drum surface；Scraper mechanism also includes the drive component for being used to drive hinging supporting shaft to produce rotational action；The driving
Component includes hydraulic cylinder and for causing hydraulic cylinder to produce the gas-liquid source of backhaul and process action；The piston rod top of hydraulic cylinder
Connecting rod is hinged with, connecting rod constitutes between hinged shaft rod end be hinged cooperation, and the equal parallel drum axis of each hinged place axis again；Work as liquid
When cylinder pressure makees process action, scraping cutter bar is reversely with each other with respect to the swaying direction of hinging supporting shaft and the rotation direction of rotary drum；The gas-liquid
Source at least includes two groups of hydraulic pressure oil tanks, and the inlet of two groups of hydraulic pressure oil tanks connects external compression air device by reversal valve,
And the liquid outlet of two groups of hydraulic pressure oil tanks is respectively communicated with the process hydraulic port and backhaul hydraulic port of hydraulic cylinder.
Hydraulic oil volume in hydraulic pressure oil tank accounts for the 1/2~2/3 of tank body total measurement (volume).
The length direction parallel drum axis direction of the blade, and blade lengths are less than rotary drum cavity heights.
When hydraulic cylinder is in maximum process location, distance is 5~8mm between side net wall in the edge of a knife and rotary drum of blade.
The reversal valve is two-position four way change valve or switch valve with two-position and five-pass.
Main advantages of the present invention are：
1), overcoming the Gypsum slurry obtained by traditional limestone/lime-gypsum wet desulfurizing process can not obtain excellent
The problem of rock gypsum.The present invention is using the twice feed pipe arranged at centrifugal dehumidifier, and the respectively uniqueness of discharging long flat mouth
Go out outlet structure, so as to realize the dual guarantee of " big load " and " uniform discharge ".As a result of the knot of above-mentioned pair of feed pipe
Structure, tries one's best greatly, to meet high-volume dehydration demand so as to do the volume of rotary drum.Gypsum slurry enter rotary drum it
Before, acted on and preliminary reduction gait of march by two sharing for feed pipe first, afterwards, then pass through the uniqueness for the long flat mouth that discharges
Trapezoidal shape and the slurry-outlet velocity for further slowing down slurry, discharging long flat mouth is finally coordinated again turns to consistent list with rotary drum
Inclined direction, the uniformity after finally ensure that the gentle property of slurry discharging and being dehydrated after filter cake shaping.And it is further lifting stone
The quality of cream product, the present invention is also provided with online washing system, by being pumped into cleaning solution at a high speed in sluicing pipe, so as to viscous
Invest the gypsum in rotary drum on side net wall and carry out displacement washing, so that effective remove function to impurity in gypsum product is realized,
Finally act on and obtain the gypsum product of high-quality by the scraper of scraper mechanism again.
To sum up, the present invention can effectively remove impurities in liquid, concentrate impurity by the exocentric structure of above All-in-One
Into discharge liquor, the gypsum product of big yield and quality product matter on the one hand can be obtained, scattered pair of impurity is on the other hand eliminated again
The potential threat of environment, achieves many things at one stroke.The plant automation degree is high, and in-service monitoring and control can be achieved, and data are protected automatically
Deposit, automatically generate production report etc., and possess that level of integrated system is high, flow is shorter, material operating link is few, it is complete close to can be achieved
The advantages of closing, effect on environment is smaller, is suitable for current industrialized production.
2), as the further preferred scheme of such scheme, then set at sluicing pipe can crosswise jet nozzle, its nozzle
Inherently extend along the generatrix direction vertical of rotary drum wire side, this may be such that the whole jeting area of nozzle on rotary drum generatrix direction
Cover rotary drum wire side, and can with the revolution action of rotary drum circumference the whole rotary drum wire side of covering, now can just reach pair
The comprehensive clean result of the gypsum filter cake of drum inner wall.The cleaning solution sprayed at a high speed passes through gypsum filter cake, by impurity therein
Salinity dissolving, displacement, then through the sieve aperture on rotary drum, lysate is thrown away under the action of the centrifugal force, reach the mesh of washing impurity
's.Afterwards, by the arrangement of scraper mechanism, by broad knife height and rotary drum internal height uniformity, such width scrapes
Knife disposably can strike off the gypsum filter cake of the inside of rotary drum, to ensure the rapidity of discharging.
3), in view of being struck off to the quick of gypsum filter cake in rotary drum, the present invention have also been devised special scraper mechanism.Due to
The gypsum filter cake always progressive additive with the dehydration action of rotary drum, one aspect of the present invention by using articulated con-rod structure,
Driving source is used as with hydraulic cylinder, it is final to realize contraposition using hinging supporting shaft and scraping cutter bar as the arm of force using connecting rod as delivery arm
Progressively precession or back-out purpose in the blade of scraping cutter bar top end.What is more important, enters in the power resources to hydraulic cylinder
During row design, present invention employs unique gas-liquid mixed dynamic structure：First by hydraulic pressure oil tank directly connect hydraulic cylinder from
And hydraulic cylinder is provided with power, pressure push is second carried out to hydraulic pressure oil tank by compressed air, so as to realize by atmospheric pressure
Turn the mixing force transmittance process of hydraulic coupling.Why above-mentioned gas-liquid mixed dynamic structure is used, allowed for such as simple use
Hydraulic structure, then generally require to be difficult to meet terseness demand in the complicated hydraulic power supply of outfit, structure and cost.Such as list
Pure use compressed air, then because the compressed property of air is big, cause pressure itself to there is unstability, it is clear that to be unfavorable for ensureing
The action stability of blade.The present invention use gas-liquid mixed power, can effectively ensure whole scraper mechanism action stability and
Reliability.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the gypsum production system residing for the present invention；
Fig. 2 is structural representation of the invention；
Fig. 3 is assembly state diagram of the feed pipe with respect to rotary drum；
Assembly state diagrams of the Fig. 4 for discharging long flat mouth with respect to rotary drum；
Fig. 5 is assembly state diagram of the sluicing pipe with respect to rotary drum；
The jet path schematic diagram of nozzle at Fig. 6 sluicing pipe；
Fig. 7-8 is the operating state schematic diagram of scraper mechanism.
Label and each part corresponding relation are as follows in accompanying drawing：
10- shell body 20- rotary drum 30- power parts
Feed pipe 43- dischargings long flat mouth under the enterprising expects pipe 42- of 41-
50- sluicing pipe 51- nozzle 60- scraper mechanisms
61- hinging supporting shaft 62- scraping cutter bar 63- blade 64- hydraulic cylinders
65- connecting rod 66- hydraulic pressure oil tank 67- reversal valves
Embodiment
For ease of understanding, the specific workflow of the present invention is made the following instructions herein：
The present invention design original intention be：Due to the flue gas in the flues such as smeltery, thermal power plant, pass through flue gas acid preparing system system
The sulfuric acid obtained, adds lime, generates gypsum solution, this is the normal process steps of flue gas desulfurization, and commonly referred to as lime-gypsum method takes off
Sulphur.The process generation gypsum liquid concentration it is diluter, by by it after slurry thickening device and slurry homogeneous device, to take off
The moisture gone in gypsum liquid and progress homogenization, and it is left to mass fraction of solids 20%~30% to improve the concentration of gypsum liquid
The right side, the gypsum liquid of this concentration fits into last slurry dewatering process, and dewatering efficiency is just high.And slurry dewatering process is generated
Gypsum liquid in contain a large amount of impurity, then need to enter washing procedure, it is final to obtain finished product stone to remove impurity salinity therein
Cream.
Exactly under above-mentioned design original intention, the present invention devises centrifugal dehumidifier, because this is gypsum product formation
Final workshop section, therefore quality, the water content of final products gypsum complete in centrifugal dehumidifier.
The amount for the gypsum solvent or diluent slurry that general flue gas desulfurization is formed is all than larger.To ensure certain yield, herein centrifugal dehydration
The technical parameter of device should all be heightened, and its diameter of rotary drum 20 is in more than 1500mm, and its height is in more than 750mm, its rotating speed
1000r/min。
When specifically used, as Figure 1-3, centrifugal dehumidifier sets two feed pipes, first can ensure larger
Inlet amount, second be reduction charging when to rotary drum 20 formation impact.Two feed pipes are alongside one another and independently arrange, its end
End enters inside rotary drum 20.For purposes of illustration only, one of feed pipe is named as into enterprising expects pipe 41 herein, with the upper feeding
The discharging long flat mouth 43 that pipe 41 is connected is named as top discharge long flat mouth, accordingly, another feed pipe and the long flat mouth that accordingly discharges
43 be lower feed pipe 42 and bottom discharge long flat mouth.Then：Enterprising expects pipe 41 and lower feed pipe 42 arrangement alongside one another, and export each other
There is difference in height on plumb height in end.Enterprising expects pipe 41 may be designed as can adjust in vertical and floats with lower feed pipe 42
It is dynamic, it can specifically be fixed by the common regulation in the art of clip even holding screw structure etc. of such as anchor ear, pipeline leakage plugging device formula
Structure, can specifically take the circumstances into consideration to select according to actual conditions；Similarly designed at following sluicing pipes 50.Enterprising expects pipe 41 it is upper
The dense slurry of gypsum that discharging long flat mouth sprays covers the upper semisection of rotary drum 20 in the height direction, and the bottom discharge of lower feed pipe 42 is long
The dense slurry of gypsum that flat mouth sprays covers the lower semisection of rotary drum 20 in the height direction.So, enterprising expects pipe 41 and lower feed pipe
42 combine, and just input the dense slurry of the gypsum of big flow into rotary drum 20.It should be noted that：Positioned at corresponding feed pipe
Top discharge long flat mouth and bottom discharge long flat mouth at the port of export is amesiality, is formed unanimously with the direction of rotation of rotary drum 20, in order to avoid
It is inconsistent with the direction of rotation of rotary drum 20 when the dense slurry of gypsum is sprayed by the grout outlet of top discharge long flat mouth and bottom discharge long flat mouth
Cause to splash.The grout outlet of top discharge long flat mouth and bottom discharge long flat mouth is the long narrow strip of the axis direction of parallel drum 20,
And the grout outlet width is generally 10mm or so.
After above-mentioned dehydration procedure, most of moisture is divested in the dense slurry of gypsum, obtained gypsum product moisture content 6%
~10%, now its water capacity is substantially reduced, but impurity content therein is also higher, it is necessary to be washed, to remove wherein
Contained impurity, obtains the gypsum product of higher quality.Therefore the dense slurry of gypsum needs to enter online washing system after dewatering,
Carry out displacement washing.Because after dehydration procedure, most of moisture is divested in the dense slurry of gypsum, the gypsum filter cake laminating of formation
In the inner surface of rotary drum 20.Now, under the automatically controlling of control system, the rotating speed reduction of rotary drum 20, online washing system is opened
Open.Cleaning solution is entered inside rotary drum 20 by sluicing pipe 50.Shown in reference picture 5-6, sluicing pipe 50 is along the height of rotary drum 20
Direction interlocks and a series of nozzle 51 is arranged in adjacent position in certain intersecting angle, makes cleaning solution complete in the short transverse of rotary drum 20
Portion is covered and minimum to the impact of rotary drum 20.Cleaning solution is by the uniformly ejection of said nozzle 51, rotary drum 20 and specifically to wash
Speed rotates, and is achieved that comprehensive washing purpose of the cleaning solution to the gypsum filter cake of the inwall of rotary drum 20.Cleaning solution passes through stone
Cream filter cake, by impurity salinity therein dissolving, displacement, then through the hole on rotary drum 20, throws away, reaches and wash under the action of the centrifugal force
Wash the purpose of impurity.
The consumption of cleaning solution is usually the 20% of the cavity volume of rotary drum 20；The time of washing and number of times are according to gypsum product institute
The quality that need to be reached is controlled.
Wait after the completion of washing, you can the quickly discharging material operation of gypsum filter cake is carried out, here by centrifugal dehumidifier
Scraper mechanism 60 is completed.As Figure 7-8, the scraper of scraper mechanism 60 is generally broad knife, and the height of blade 63, which is slightly less than, to be turned
The bus length of drum 20, such blade 63 can once strike off the filter cake in the short transverse of rotary drum 20.The leading portion of scraping cutter bar 62 is filled
There is blade 63, the end of scraping cutter bar 62 is mounted in the side of hinging supporting shaft 61, and the rotation of hinging supporting shaft 61 can rotate with cutting blade 63.Along rotary drum 20
Generatrix direction overlooks gypsum centrifuge, and when the steering of its rotary drum 20 is clockwise, blade 63 needs rotate counterclockwise just to scrape filter
Cake.
The upper end of hinging supporting shaft 61 is equipped with connecting rod 65, and the end of connecting rod 65 is connected with the tailpiece of the piston rod of hydraulic cylinder 64.Pushed away before piston rod
Or during post-tensioning, i.e., drivening rod 65 makees corresponding front or rear action；And the fore-aft motion of connecting rod 65, that is, drive hinging supporting shaft 61
Rotation, namely acted with cutting blade 63.It is specific as follows：Under normal circumstances, the piston rod of hydraulic cylinder 64 is retracted mode, now
Blade 63 is away from the segment distance of 20 inwall of rotary drum one, in reset state.The distance between blade 63 and the inwall of rotary drum 20 are reserved
Filter cake formation space, when filter cake formation to it is most thick when, filter cake will not also encounter blade 63.After filter cake is formed, scraper mechanism 60
Automatically into discharging pattern, rotating speed declines, and is pushed away before piston rod, the counter-clockwise swing of drivening rod 65, accordingly, hinging supporting shaft 61 is inverse
Hour hands are rotated, and blade 63 is swung to filter cake direction, successively strikes off filter cake.When shifting 64 top of hydraulic cylinder before piston rod onto, knife
Piece 63 is reached and strikes off the maximum spacing of the bed of material, and cake layer has been scraped substantially.Filter cloth can not be contacted in view of blade 63, in order to avoid will filter
Cloth is scratched, and blade 63 strikes off the maximum spacing generally apart from the 5~8mm of inwall of rotary drum 20 of the bed of material, and the distance needs to rely on hydraulic pressure
The stroke of cylinder 64 is controlled by.After the completion of scraper, piston rod post-tensioning, the clockwise oscillation of connecting rod 65, the also dextrorotation of hinging supporting shaft 61
Turn, blade 63 is swung to away from the inwall direction of rotary drum 20, is again introduced into reset state.
The length of connecting rod 65 is generally higher than the length several times of scraping cutter bar 62, and such length sets and make use of lever principle, can be with
Save the thrust of hydraulic cylinder 64.The thrust of hydraulic cylinder 64 is more than its pulling force, so, it is that the thrust of hydraulic cylinder 64 is made when scraper
With so taking full advantage of the thrust of hydraulic cylinder 64.Set by two above, less thrust can be used to promote blade
63 dischargings.
Because less thrust can be used to promote the discharging of blade 63, it is not necessary to, can also from complicated hydraulic station
Reduce input cost and maintenance cost.And external compression air device can use factory's compressed gas source to realize, it is contemplated that gas
Source it is unstable, when and pressure it is big when and pressure is small, easily cause fluctuation during 63 scraper of blade, therefore, the of the invention design
A kind of gas-liquid mixed structure, it is specific as follows the problem of to solve supply pressure fluctation：
(such as two-position four way change valve or two the five as shown in fig. 7, gas outlet of external compression air device and reversal valve 67
Logical reversal valve etc.) air inlet P be connected, outlet A, B of reversal valve 67 respectively with the interface A10 at the top of two groups of hydraulic pressure oil tanks 66,
B10 is connected, and interface A11, B11 of two groups of bottoms of hydraulic pressure oil tank 66 are then respectively with the process hydraulic port B12 of hydraulic cylinder 64 and returning
Journey hydraulic port A12 is connected.Generally, interface A10, B10, A11, B11 and process hydraulic port B12 and backhaul hydraulic port
A is in normally open.
Two groups of hydraulic pressure oil tanks 66 should be able to bear pressure, and its pressure born should be the 1.25 of entered compressed air pressure
It is again or higher, belong to pressure vessel, it is necessary to the design of pressing force vessel code requirements, manufacture, inspection etc..
Two groups of hydraulic pressure oil tanks 66 are equipped with the hydraulic oil of its volume 1/2~2/3, and residual volume is full of air.Compressed air is entered
Enter two groups of hydraulic pressure oil tanks 66, because two groups of tops of hydraulic pressure oil tank 66 are the cavity volume full of air, the fluctuation of compressed air will be obtained
To buffering, eliminate.Compressed air is acted on hydraulic oil, because hydraulic oil is incompressible, and hydraulic oil is just directly delivered
The pressure of compressed air, eliminates the pressure change that compressed air produces wave zone in transmittance process.
With reference to shown in 7-8, the motion flow of whole scraper mechanism 60 is：
Under normal circumstances, as shown in fig. 7, blade 63 is in reset state.The outlet of reversal valve 67 A air inlets, B exhausts, compression
Air is by exporting A, interface A10 into left side hydraulic pressure oil tank, the liquid that the pressure of compressed air is acted in the hydraulic pressure oil tank of left side
Press oil on pasta, promote hydraulic oil by exporting A11, interface A12 into the ante-chamber of hydraulic cylinder 64, piston rod is in backhaul shape
State, blade 63, which is withdrawn, to be resetted.
After filter cake is formed, as shown in figure 8, scraper mechanism 60 is automatically into discharging pattern, PLC is provided under signal, rotating speed
Drop.Reversal valve 67 is acted, the outlet of reversal valve 67 A exhausts, B air inlets, and compressed air is by exporting B, interface B10 into right side hydraulic pressure
Oil tank, the pressure of compressed air is acted on the hydraulic oil pasta in the hydraulic pressure oil tank of right side, promote hydraulic oil by export B11,
Interface B12 enters the back cavity of hydraulic cylinder 64, promotes piston rod to move forward, at the same the counter-clockwise swing of drivening rod 65, accordingly, hinge
The also rotate counterclockwise of fulcrum 61, then band cutting blade 63 swung to filter cake direction, successively filter cake is struck off.Piston rod is moved forward
When, the ante-chamber volume of hydraulic cylinder 64 is gradually reduced, and the hydraulic oil in ante-chamber returns to right side hydraulic pressure oil tank by interface A12, A11
Interior, the hydraulic oil increase in the hydraulic pressure oil tank of right side, hydraulic oil pasta rises, and the air cavity volume in the hydraulic pressure oil tank of right side reduces, gas
Body exports A discharges by reversal valve 67；
At the end of filter cake strikes off, now the piston rod of hydraulic cylinder 64 reaches forefront, and PLC provides signal, and reversal valve 67 is moved
Make, the outlet of reversal valve 67 A air inlets, B exhausts, compressed air is by exporting A, interface A10 into left side hydraulic pressure oil tank, compressed air
Pressure act on left side hydraulic pressure oil tank in hydraulic oil pasta on, promote hydraulic oil enter liquid by exporting A11, interface A12
The ante-chamber of cylinder pressure 64, promotes piston rod to move backward, while the clockwise oscillation of connecting rod 65 is pulled, accordingly, the also up time of hinging supporting shaft 61
Pin is rotated, and then band cutting blade 63 is swung to away from the inwall direction of rotary drum 20, until original rest state.Piston rod is transported backward
When dynamic, the back cavity volume of hydraulic cylinder 64 is gradually reduced, and the hydraulic oil in back cavity returns to right side hydraulic oil by interface B12, B11
In tank, the hydraulic oil increase in the hydraulic pressure oil tank of right side, hydraulic oil pasta rises, and the air cavity volume in the hydraulic pressure oil tank of right side reduces,
Gas exports B discharges by reversal valve 67.
In summary, the dense slurry of gypsum in the present invention, which need to undergo, forms filter cake after charging, dehydration, then by washing, scraping
Expect to obtain finished product, above steps corresponds to different rotating speeds, respectively nCharging、nDehydration、nWashing、nScraper.Rotation speed relation is：nCharging
For 300r/min or so；nDehydrationWith nWashingIt is of substantially equal, or nWashingIt is slightly less than nDehydration。nDehydrationFor be the present invention maximum speed 1000r/
min。nScraperIt is minimum, general 100r/min or so.Above rotating speed and the corresponding valve of rotating speed, pump etc. are acted by control system
Centralized automatic control.
By the exocentric structure of above All-in-One, the present invention can effectively remove impurities in liquid, impurity is focused on row
Go out in liquid, on the one hand can obtain the gypsum product of big yield and quality product matter, impurity is on the other hand eliminated again scattered to environment
Potential threat, achieve many things at one stroke.The plant automation degree is high, and in-service monitoring and control can be achieved, and data are automatically saved, from
Dynamic generation production report etc., and possess that level of integrated system is high, flow is shorter, material operating link is few, totally-enclosed etc. can be achieved
Advantage, effect on environment is smaller, is suitable for current industrialized production.
Claims (8)
1. a kind of centrifugal dehumidifier for separating gypsum, it is characterised in that：The present apparatus includes possessing the columned of closing inner chamber
It is coaxially arranged in shell body (10), the closing inner chamber of shell body (10) to have rotary drum (20), an axial end cloth of the rotary drum (20)
Put the power part (30) for driving the rotary drum (20) to produce revolution action；The present apparatus also includes the upper feeding being parallelly disposed with respect to one another
(41) and lower feed pipe (42) are managed, two feed pipe entrance points connect outside conveying equipment, and the exit of two feed pipes is provided with
The discharging long flat mouth (43) discharged for radial direction；Described discharging long flat mouth (43) profile in grout outlet is big and that stock inlet is small is trapezoidal
Shape, what the trapezoidal base of discharging long flat mouth (43) constituted that grout outlet and trapezoidal top margin constitute the corresponding feed pipe outlet of connection enters slurry
Mouthful, the grout outlet profile of the discharging long flat mouth (43) is in rectangular strip and grout outlet length direction parallel drum (20) axis
Direction；Slurry injection direction is consistent with the rotation direction of rotary drum (20) at the grout outlet of the discharging long flat mouth (43), enterprising expects pipe
(41) slurry spray regime and lower feed pipe (42) place discharging long flat mouth (43) go out at the grout outlet of place's discharging long flat mouth (43)
Slurry spray regime is covered each by the upper half compass screen surface and lower half compass screen surface of rotary drum (20) at slurry mouth；Also set in the side of above-mentioned feed pipe
It is equipped with for the sluicing pipe (50) of penetrating detergent into rotary drum (20) and for carrying out gypsum to the interior side net wall of rotary drum (20)
The scraper mechanism (60) struck off.
2. a kind of centrifugal dehumidifier for separating gypsum according to claim 1, it is characterised in that：The discharging long flat mouth
(43) grout outlet width is 10mm.
3. a kind of centrifugal dehumidifier for separating gypsum according to claim 1 or 2, it is characterised in that：The rotary drum
(20) axis plumbing arrangement, sluicing pipe (50) and each equal parallel drum of feed pipe axis (20) axis；Sluicing pipe (50) are located at
The nozzle (51) for increasing detergent spouting velocity is densely covered with pipe shaft in rotary drum (20)；Axial length side in sluicing pipe (50)
Upwards, the detergent emission direction of each adjacent nozzle (51) is intersected with each other and is directed at rotary drum (20) interior side net wall.
4. a kind of centrifugal dehumidifier for separating gypsum according to claim 1, it is characterised in that：The scraper mechanism
(60) hinging supporting shaft (61) axially stretched into along rotary drum (20) in rotary drum (20), rod end and the rotary drum (20) of hinging supporting shaft (61) are included
Revolution is constituted between respective end to coordinate；The side of hinging supporting shaft (61), which extends radially outwardly, scraping cutter bar (62), the top of scraping cutter bar (62)
Affixed blade (63) is held, the edge of a knife of blade (63) points to rotary drum (20) drum surface；Scraper mechanism (60) also includes hinged for driving
Axle (61) produces the drive component of rotational action；The drive component includes hydraulic cylinder (64) and for causing hydraulic cylinder (64)
Produce the gas-liquid source of backhaul and process action；The piston rod top of hydraulic cylinder (64) is hinged with connecting rod (65), connecting rod (65) again with
Constituted between hinging supporting shaft (61) rod end and be hinged cooperation, and each equal parallel drum of hinged place axis (20) axis；When hydraulic cylinder (64) is made
During process action, scraping cutter bar (62) is reversely with each other with respect to the rotation direction of the swaying direction and rotary drum (20) of hinging supporting shaft (61)；Institute
Stating gas-liquid source at least includes two groups of hydraulic pressure oil tanks (66), and the inlet of two groups of hydraulic pressure oil tanks (66) is connected by reversal valve (67)
External compression air device, and the liquid outlet of two groups of hydraulic pressure oil tanks (66) be respectively communicated with hydraulic cylinder (64) process hydraulic port and
Backhaul hydraulic port.
5. a kind of centrifugal production technology for separating gypsum according to claim 4, it is characterised in that：Hydraulic pressure oil tank (66)
Interior hydraulic oil volume accounts for the 1/2~2/3 of tank body total measurement (volume).
6. a kind of centrifugal production technology for separating gypsum according to claim 4, it is characterised in that：The blade (63)
Length direction parallel drum (20) axis direction, and blade (63) length be less than rotary drum (20) cavity heights.
7. a kind of centrifugal production technology for separating gypsum according to claim 4, it is characterised in that：Work as hydraulic cylinder
(104) when in maximum process location, distance is 5~8mm between side net wall in the edge of a knife and rotary drum of blade (63).
8. a kind of centrifugal production technology for separating gypsum according to claim 4, it is characterised in that：The reversal valve
(67) it is two-position four way change valve or switch valve with two-position and five-pass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710478995.6A CN107158761A (en) | 2017-06-22 | 2017-06-22 | A kind of centrifugal dehumidifier for separating gypsum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710478995.6A CN107158761A (en) | 2017-06-22 | 2017-06-22 | A kind of centrifugal dehumidifier for separating gypsum |
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| CN107158761A true CN107158761A (en) | 2017-09-15 |
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ID=59819926
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710478995.6A Pending CN107158761A (en) | 2017-06-22 | 2017-06-22 | A kind of centrifugal dehumidifier for separating gypsum |
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| CN112390554A (en) * | 2020-09-23 | 2021-02-23 | 潜江方圆钛白有限公司 | Industrialized device and method for dehydrating and drying titanium gypsum |
| CN114599453A (en) * | 2020-10-05 | 2022-06-07 | 株式会社Lg化学 | Continuous centrifugal dewatering device |
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