CN104771932A - External local grade reflux unit of centrifugal extractor - Google Patents
External local grade reflux unit of centrifugal extractor Download PDFInfo
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- CN104771932A CN104771932A CN201510133328.5A CN201510133328A CN104771932A CN 104771932 A CN104771932 A CN 104771932A CN 201510133328 A CN201510133328 A CN 201510133328A CN 104771932 A CN104771932 A CN 104771932A
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Abstract
The invention relates to an external local grade reflux device of a centrifugal extractor, which comprises a closed solution collecting cavity; an upper cover is fixedly arranged on the upper side of the solution collecting cavity, and a feeding pipe communicated with a small-flow phase system outlet on the centrifugal extractor penetrates through the upper cover to be inserted into the solution collecting cavity; the bottom of the solution collecting cavity is respectively provided with a return pipe and a small-flow phase system liquid outlet device which are communicated with a small-flow phase system inlet on the centrifugal extractor, and the inlet of the small-flow phase system liquid outlet device is higher than the inlet of the return pipe. The invention is arranged externally, so the invention can be conveniently arranged at the liquid phase outlet end with smaller flow of the centrifugal extractor and needing to implement the reflux of the stage without changing the structure of the centrifugal extractor, has stable operation, can obviously improve the extraction and separation effect, and has better economic benefit and social benefit.
Description
Technical field
The invention belongs to solvent extraction field, be specifically related to a kind of centrifugal extractor external reflux at the corresponding levels.
Background technology
Centrifugal extractor is one liquid-liquid extraction equipment fast and efficiently, and it is the extraction and fractionation utilizing centrifugal force to realize liquid-liquid diphase.Gently, heavy two-phase from its separately import enter extracter inside, flowed downward by the gap between lower house and rotary drum, enter rotary drum inside by the entrance of bottom of the drum, the rotary drum of rotation produces centrifugal force, by different for density two-phase liquid separately, the object of separation is reached.Two-phase liquid separately enters respective collecting chamber by different runners, is flowed out by respective fairlead.Centrifugal extractor can be widely used in the multiple fields such as hydrometallurgy, wastewater treatment, biology, pharmacy, petrochemical industry, chemical industry, spices, dyestuff, atomic energy.Have that to deposit flow little, the time of staying is short, adapts to stream than (i.e. the flow-rate ratio of light, heavy two-phase) wide ranges, reaches mass transfer balancing speed soon, mass transfer stage efficiency advantages of higher.
Centrifugal extractor is generally applicable to light, heavy two-phase flow ratio within 1:20, at this stream than in scope, centrifugal extractor can be regulated, to obtain the good product of quality and higher extraction efficiency by modes such as adjustment rotating speed, heavy phase weir plate or increase extraction progression.In production, in the field such as Extraction of rare eart, hydrometallurgy, because extractant and technique need, stream, than exceeding this scope, reaches 1:30, even more than 1:50.At this large stream than in situation, balance each other in centrifugal extractor as easy as rolling off a log fluctuation, and extractant contact surface is little, and the product design extracted is very low, second-rate, and extraction efficiency is low.At present, run into and flow than the condition of production greatly, centrifugal extractor generally just can not get application, have to adopt inefficiency, traditional, utilize gravity to realize the extraction tank of static layering, extraction box or extraction tower, seriously hinder applying of centrifugal extractor.
Chinese patent literature CN 103830933A discloses a kind of cylindrical centrifugal extracter, this centrifugal extractor is by motor, transmission system, rotating shaft, supplemental support, mixing chamber, light phase export, light phase import, heavy out, heavy phase import, interlayer, annular impeller, charging impeller, frame, light phase weir plate, heavy phase weir plate, light phase collecting chamber and heavy phase collecting chamber are formed, wherein the outside of rotary drum is provided with interlayer from inside to outside, light phase collecting chamber and heavy phase collecting chamber, the bottom of the interlayer outside mixing chamber and rotary drum is provided with annular impeller, can reduce and carry secretly, strengthen extraction flux, improve the efficiency of extract and separate.But this kind of improvement needs to change the structure of centrifugal extractor itself, not there is in actual production general and applicability flexibly.
Therefore, those skilled in the art need to provide a kind of simple and practical, are easy to install, stable and can significantly improve the reflux at the corresponding levels of the external for centrifugal extractor of extract and separate effect.
Summary of the invention
For above-mentioned deficiency, the technical problem to be solved in the present invention is to provide a kind of simple and practical, is easy to install, stable and significantly improve the reflux at the corresponding levels of the external for centrifugal extractor of extract and separate effect.
To achieve these goals, the present invention is achieved through the following technical solutions:
A kind of centrifugal extractor external reflux at the corresponding levels, this external reflux at the corresponding levels comprises closed solution collection chamber; The upside in described solution collection chamber is installed with upper cover, is export the feed pipe be connected to pass the inside that upper cover inserts solution collection chamber mutually with the low discharge on centrifugal extractor; It is the return duct that is connected of import and low discharge is mutually liquid discharge device mutually that the bottom in described solution collection chamber is respectively equipped with the low discharge on centrifugal extractor, and described low discharge is the import of import higher than described return duct of liquid discharge device mutually.
Preferably, the upper opening in the shape of described upper cover, size and solution collection chamber matches, and described solution collection chamber is set to cylindrical or square groove shape; Together with described upper cover is bolted to connection with solution collection chamber; The sealing gasket of sealing solution collection chamber internal liquid is provided with between the upper opening in described upper cover and solution collection chamber.
Preferably, the interior sidewall surface at its upper opening place close in described solution collection chamber is installed with annular backing plate, described annular backing plate is provided with and makes the uniform liquid in inflow solution collection chamber, without the porous plate entered with impacting in chamber; Described porous plate is laid with through hole equably.
Preferably, described feed pipe is arranged on the center position of upper cover; The top of described return duct and the bottom in solution collection chamber flush, described return duct and low discharge be mutually liquid discharge device away from each other, and described return duct and low discharge be mutually liquid discharge device on locus all away from feed pipe in the upper entrance location covered.
Preferably, described low discharge is that the discrepancy in elevation between the import being embedded in inside, solution collection chamber of liquid discharge device and solution collection chamber bottom interior surface is adjustable mutually.
Preferably, described low discharge is that to comprise the low discharge be fixedly connected with solution collection chamber be drain pipe to liquid discharge device mutually mutually, described low discharge is that joining one section of drain pipe and solution collection chamber is set to straight length mutually, and low discharge is the top of drain pipe and the bottom in solution collection chamber mutually flushes; Described low discharge is that liquid discharge device also comprises short tube mutually, it is in the straight length of drain pipe mutually that the lower nozzle of described short tube is plugged in low discharge, the upper orifice of short tube and import are higher than the bottom interior surface in solution collection chamber, and described short tube is plug depth adjustable in the straight length of drain pipe at low discharge mutually.
Further, described low discharge is form threaded engagement between drain pipe and short tube mutually, and wherein, low discharge is that the straight length inside on drain pipe top arranges internal thread mutually, short tube outer setting has external screw thread, and low discharge is internal thread length on drain pipe is mutually greater than external thread length on short tube;
Or described low discharge is that drain pipe is set to plug-in with short tube and coordinates mutually, and wherein, low discharge is be provided with sealing ring between drain pipe and short tube mutually, and low discharge is be processed into interference fits between the inner surface of drain pipe and the outer surface of short tube mutually.
Further, the internal face at the upper orifice place of described short tube is set to the interior hexagonal shape being convenient to wrench operated.
Preferably, three-way pipe is added in the low discharge Xiang Xi import department of centrifugal extractor, the low discharge of separation to be extracted is entered by supervisor's mouth of three-way pipe mutually, the solution inlet port of reflux at the corresponding levels is export to be connected with the low discharge of centrifugal extractor mutually, and the outlet of the return duct of reflux at the corresponding levels is connected by flexible pipe with the other mouth of pipe of described three-way pipe.
Further, low discharge in reflux at the corresponding levels is the low discharge of liquid discharge device is mutually collect mouth to be connected by flexible pipe with supervisor's mouth of the three-way pipe of next stage centrifugal extractor mutually, the return duct outlet of reflux at the corresponding levels is connected by flexible pipe with the other mouth of pipe of centrifugal extractor three-way pipe at the corresponding levels, in centrifugal extractor at the corresponding levels, the import of another phase system exports UNICOM with this phase of next stage centrifugal extractor thus forms plural serial stage counter-current extraction system, and the low discharge of the reflux at the corresponding levels of afterbody centrifugal extractor is collect the final eluate collection mouth that mouth forms this phase mutually.
Beneficial effect of the present invention is:
1), the present invention passes through at the low discharge of conventional centrifugal extracter is (for convenience of description mutually, in this description using heavy phase as low discharge be mutually all) the port of export external reflux at the corresponding levels is set, being separated through centrifugal extractor the heavy phase obtained first is gathered in solution collection chamber, and this solution collection chamber forms two outlets owing to being provided with return duct and being liquid discharge device mutually with low discharge: heavy phase collects mouth and return duct outlet.Wherein, the upper orifice of return duct and the bottom in solution collection chamber flush; And low discharge be mutually bottom the upper orifice of short tube in liquid discharge device and solution collection chamber between there is adjustable discrepancy in elevation h, hydrops is only had to exceed this discrepancy in elevation h, heavy phase could be drain pipe fluid via short tube and low discharge mutually, before not reaching this discrepancy in elevation h, heavy phase can only lead back the feed tube of this phase system by return duct, therefore, by regulating discrepancy in elevation h, the actual flow of heavy phase liquid in centrifugal extractor inside can be made to increase.
The external that the present invention introduces reflux at the corresponding levels can be arranged on easily centrifugal extractor flow less, the liquid-phase outlet end that needs to implement backflow at the corresponding levels, and without the need to carrying out any structural change to centrifugal extractor itself, simple and practical.During backflow, generally make two-phase flow ratio reach the suitable proportion of 1:4 ~ 1:5, now centrifugal extractor will obtain the good product of quality and realize higher extraction efficiency.
2), the present invention is applied on centrifugal extractor, in actual extraction process, this device does not change the actual turnover flow of centrifugal extractor technique, namely the extract return method flow in return duct will circulate always in centrifugal extractor at the corresponding levels, thus effectively ensure that the stability of this plant running.
3) the solution collection chamber, in the present invention is generally set to cylindrical or square groove shape, also be convenient to calculate its cross-sectional area while being convenient to processing, then when determining to reach higher extraction efficiency according to the factor such as concrete physical property, two-phase density contrast for the treatment of material, the actual of centrifugal extractor inside needs flows ratio mutually.Coordinate the solution collection chamber of suitable dimension, simultaneously by regulating difference in height h, the flow of adjustment backflow, can realize required inside actual flow ratio; This has larger directive significance to the extraction work of centrifugal extractor.
The present invention by adjustment to short tube position in heavy phase drain pipe, can change simply and easily heavy phase drain pipe inside block bottom the upper orifice of the short tube of joining and solution collection chamber between discrepancy in elevation h, and then reach desirable and actually flow ratio mutually.And the adjustment form of discrepancy in elevation h, except screw-type, plug-in, also can need according to practical operation and be made into other forms such as packing_seal fastening-type, clamping hoop type.In screw-type coordinates, the internal thread length of the straight length inside setting of heavy phase drain pipe is greater than the external thread length of short tube, supporting die nut can be used to insert in the upper orifice of the interior hexagonal shape of short tube simultaneously, the upper orifice of certain short tube also can be made into other shape easily regulating, easily process, this project organization not only increases the adjustable range of discrepancy in elevation h, and can carry out adjustment work easily to guarantee the correctness that discrepancy in elevation h regulates.
4), sealing gasket is set between upper cover and solution collection chamber in the present invention, the liquid of inside, solution collection chamber can be sealed, preventing leak of liquid from reality is flowed mutually to the life-span weakening centrifugal extractor than having an impact; The present invention also arranges porous plate on annular backing plate, porous plate offers equally distributed through hole, object makes the uniform liquid in inflow solution collection chamber, without entering in chamber with impacting, in order to avoid pour in heavy phase drain pipe when making heavy phase liquid not reach discrepancy in elevation h, affect the inner actual ratio of stream mutually of extracter, reduce effect of extracting; Porous plate generally can directly be placed on annular backing plate, without the need to fixing, is convenient to changeing and cleaning of later stage.
5) return duct, in the present invention and heavy phase drain pipe on spatial placement away from feed pipe in the upper import covered, return duct and heavy phase drain pipe are arranged respectively according to the import and export pipeline orientation of centrifugal extractor, to facilitate stringing, and guarantee that stringing is unimpeded, avoid the unfavorable phenomenon such as sharp turn, climbing.
6), can be that feed tube place arranges three-way pipe mutually at low discharge according to the extraction demand in production process in the present invention, the heavy phase of reflux at the corresponding levels is collected mouth be connected by flexible pipe with supervisor's mouth of next stage centrifugal extractor three-way pipe, the return duct outlet of reflux at the corresponding levels is connected by flexible pipe with the other mouth of pipe of centrifugal extractor three-way pipe at the corresponding levels, in centrifugal extractor at the corresponding levels, the import of another phase system exports with this phase of next stage centrifugal extractor and connects, thus form plural serial stage counter-current extraction system, with the quality of the efficiency and product that improve extraction, wherein the heavy phase of the reflux at the corresponding levels of the centrifugal extractor of afterbody is collected as the eluate collection mouth of this phase final.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the A-A profile of Fig. 1.
Fig. 4 is low discharge is that drain pipe place coordinates enlarged drawing with the plug of short tube mutually.
Fig. 5 is the structural representation of the plural serial stage centrifugal extractor introducing external reflux at the corresponding levels.
Fig. 6 is the top view of Fig. 5.
The implication marked in figure is as follows:
1-feed pipe 2-upper cover 3-sealing gasket 4-bolt 5-annular backing plate
6-porous plate 7-solution collection chamber 8-short tube 9-low discharge is drain pipe mutually
90-heavy phase drain pipe 10-return duct 11-sealing ring 12-three-way pipe
13-flexible pipe N1-low discharge is the import of import N10-heavy phase mutually
N2-light phase import N3-light phase export N4-low discharge is outlet N40-heavy out mutually
N5-solution inlet port N6-low discharge is collect mouth N60-heavy phase to collect mouth mutually
N7-return duct outlet N8-is responsible for the mouth N80-other mouth of pipe h-discrepancy in elevation
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, be a kind of centrifugal extractor external reflux at the corresponding levels.This device comprises through the feed pipe 1 of upper cover 2 and exports the solution collection chamber 7 of UNICOM with feed pipe 1; Upper cover 2 is fixed with one at the upper opening place in solution collection chamber 7 and solution collection chamber 7, and being provided with return duct 10 bottom solution collection chamber 7 with low discharge is liquid discharge device mutually; Low discharge is liquid discharge device be mutually drain pipe 9 mutually with being plugged in low discharge by low discharge is that short tube 8 on drain pipe 9 is formed mutually.
The return flow line of centrifugal extractor is that to flow into from feed pipe 1 low discharge that solution collection chamber 7 is back to this phase import of centrifugal extractor again through return duct 10 be again flow through passage mutually, and liquid outlet channel be from feed pipe 1 flow into solution collection chamber 7 more successively through short tube 8, low discharge be the passage that drain pipe 9 flows out mutually.Feed pipe 1 and the low discharge of centrifugal extractor are export N4 to be connected mutually, and return duct 10 and the low discharge of centrifugal extractor are that import N1 is connected mutually, and low discharge is drain pipe 9 for the low discharge after being finally separated mutually is fluid mutually.
The shape of upper cover 2, size and solution collection chamber 7 match, and solution collection chamber 7 is set to cylindrical or square groove shape; Upper cover 2 and solution collection chamber 7 are fixed together by bolt 4; The sealing gasket 3 of sealing solution collection chamber 7 internal liquid is provided with between upper cover 2 and solution collection chamber 7.The close upper opening place in solution collection chamber 7 is installed with annular backing plate 5, annular backing plate 5 is provided with and makes the uniform liquid in inflow solution collection chamber 7, without the porous plate 6 entered with impacting in chamber; Porous plate 6 is provided with the through hole evenly laid.Feed pipe 1 is arranged on upper cover 2 center.Solution inlet port N5 in this external reflux at the corresponding levels, return duct outlet N7 and low discharge are collection mouth N6 is mutually any one in flange form, fast-open type or clamping hoop type with the connected mode of corresponding pipeline.
As shown in Figure 2, return duct 10 and low discharge are that the top of drain pipe 9 all flushes with the bottom in solution collection chamber 7 mutually, and return duct 10 and low discharge are drain pipe 9 mutually is spatially set to respectively away from the import of feed pipe 1 on upper cover 2.
Low discharge be mutually drain pipe 9 top straight length in be equipped with the short tube 8 that can move up and down in straight length, the upper orifice on short tube 8 top can regulate to the size that the distance between the bottom interior surface of solution collection chamber 7 is discrepancy in elevation h, discrepancy in elevation h.According to the different fit system that low discharge is between drain pipe 9 and short tube 8 mutually, discrepancy in elevation h takes different regulative modes accordingly.
Such as, as shown in Figure 1,3, low discharge is that drain pipe 9 is set to screw-type with short tube 8 and coordinates mutually, and wherein, low discharge is that the straight length inside on drain pipe 9 top arranges internal thread mutually, and short tube 8 outer setting has external screw thread, and internal thread length is greater than external thread length; The inside of the upper orifice of short tube 8 is set to the interior hexagonal shape being convenient to wrench operated.
Or, as shown in Figure 4, low discharge is that drain pipe 9 is set to plug-in with short tube 8 and coordinates mutually, wherein, low discharge is be provided with sealing ring 11 between drain pipe 9 and short tube 8 mutually, and low discharge is be processed into interference fits between the inner surface of drain pipe 9 and the outer surface of short tube 8 mutually.
Except above-mentioned screw-type, plug-in coordinate, low discharge is also can be made into other fit forms such as packing_seal fastening-type, clamping hoop type between drain pipe 9 and short tube 8 mutually.
Low discharge is that import N1 place is set to three-way pipe 12 mutually, and low discharge is entered by supervisor's mouth N8 of three-way pipe 12 mutually; The solution inlet port N5 of reflux at the corresponding levels is export N4 to be connected with the low discharge of centrifugal extractor mutually, and the return duct of reflux at the corresponding levels outlet N7 is connected by flexible pipe 13 with the other mouth of pipe N80 of three-way pipe 12.
As shown in Figure 5,6, the low discharge of reflux at the corresponding levels is collect mouth N6 to be connected by flexible pipe 13 with supervisor's mouth N8 of next stage centrifugal extractor three-way pipe 12 mutually, the return duct outlet N7 of reflux at the corresponding levels is connected by flexible pipe 13 with the other mouth of pipe N80 of centrifugal extractor three-way pipe 12 at the corresponding levels, in centrifugal extractor at the corresponding levels, the import of another phase system exports with this phase of next stage centrifugal extractor and connects, thus forming plural serial stage counter-current extraction system, the low discharge of the reflux at the corresponding levels of afterbody centrifugal extractor is collect the outlet that mouth N6 is this phase final mutually.
When there is large stream than extraction operating mode in centrifugal extractor, its control method at the corresponding levels is as follows: the fluid being mutually by low discharge is introduced in the solution collection chamber 7 of external reflux at the corresponding levels, discrepancy in elevation h between the upper orifice of adjustment short tube 8 and solution collection chamber 7 bottom interior surface is to correct position, it could be drain pipe 9 fluid via short tube 8 and low discharge mutually that hydrops exceedes this discrepancy in elevation h, before not reaching this discrepancy in elevation h, fluid can only by return duct 10 lead back to low discharge be import N1 place mutually, by the adjustment of discrepancy in elevation h, the two-phase flow ratio of centrifugal extractor inside is made to be stabilized in 1:4 ~ 1:5 gradually.
Be described further below in conjunction with the course of work of accompanying drawing to the centrifugal extractor being furnished with external reflux at the corresponding levels.
With heavy phase be flow less be example, first, the flow of heavy phase import N10 is Q1, the flow of light phase import N2 is Q2, suppose that Q1:Q2 two is in a ratio of and flow greatly ratio, its stream ratio is more than 1:30, namely the flow of heavy phase Q1 is less, low discharge be mutually outlet N4 also namely heavy out N40 place introduce external corresponding levels refluxes, in theory, according to the conservation of matter, the flow of centrifugal extractor heavy out N40 is also Q1, the flow of light phase export N3 is also that Q2 is (actual because gently extract solute component in heavy phase mutually, the dissolving that weight is alternate, light volatilization mutually etc., the flow that two-phase flows out can change, ignore above factor herein, be similar to and think that flow is constant).Being separated through centrifugal extractor the heavy phase obtained first is gathered in solution collection chamber 7, and this solution collection chamber 7 forms two outlets owing to being provided with return duct 10 and heavy phase drain pipe 90: heavy phase collects mouth N60 and return duct outlet N7.Flush bottom the upper orifice of return duct 10 and solution collection chamber 7; And there is adjustable discrepancy in elevation h bottom the upper orifice of the short tube 8 that heavy phase drain pipe 90 inside card is joined and solution collection chamber 7, hydrops is only had to exceed this discrepancy in elevation h ability fluid, before not reaching this discrepancy in elevation h, the inlet tube that fluid can only lead back this phase system by return duct 10 also i.e. heavy phase import N10, therefore, by regulating discrepancy in elevation h, the actual flow of heavy phase liquid in centrifugal extractor inside can be made to increase, generally increase to two-phase flow ratio about the suitable proportion of 1:4 ~ 1:5.
If centrifugal extractor inside needs heavy phase and the actual flow ratio of light phase to control at 1:4 ~ 1:5, according to centrifugal extractor inner volume volume and the actual flow that need reach than 1:4 ~ 1:5,---heavy phase namely in this example---needs the volume of backflow can to extrapolate the liquid phase of rill ratio, the volume of this backflow equals the product of reflux solution collection chamber 7 (for the ease of processing and calculating, solution collection chamber is generally set to cylindrical or square groove shape) sectional area at the corresponding levels and discrepancy in elevation h.The flow of this backflow is set to Q11, and now, the actual feed rate of centrifugal extractor heavy phase is Q1+Q11, and inner actual flow, than being (Q1+Q11): Q2, increases inner actual flow ratio.After inside stream is than the actual flow ratio reaching needs, the heavy phase that the volume sum of the volume namely refluxed and charging reaches centrifugal extractor cavity volume by actual flow than shared volume, heavy phase fluid will increase in the solution collection chamber 7 in reflux at the corresponding levels gradually, eventually exceed the discrepancy in elevation h of reflux solution collecting chamber 7 at the corresponding levels, heavy phase then can be collected mouth N60 from heavy phase and be flowed out, and completes reflux course at the corresponding levels.
After increasing reflux at the corresponding levels, the flow that mouth N8 heavy phase is responsible for by centrifugal extractor three-way pipe 12 is Q1, the flow of three-way pipe 12 other mouth of pipe N80 heavy phase is Q11, the actual total feed rate of heavy phase is Q1+Q11, light phase feed rate is constant, the flow of light phase import N2 is still for being Q2, and inner actual flow ratio is (Q1+Q11): Q2, and return flow Q11 can circulate in the corresponding levels always.The flow that the external reflux heavy phase at the corresponding levels of centrifugal extractor collects mouth N60 is still the flow of Q1, light phase export N3 is still Q2, does not change the actual turnover flow of centrifugal extractor technique.
If desired during plural serial stage extraction, as Fig. 5, shown in 6, filled arrows in figure on flexible pipe 13 is the flow direction of liquid phase, the liquid phase stream of return duct outlet N7 carries out backflow continuation extract and separate to the other mouth of pipe N80 of centrifugal extractor heavy phase import N10 at the corresponding levels, the heavy phase liquid that extract and separate obtains after corresponding levels backflow collects from the heavy phase of heavy phase drain pipe 90 supervisor's mouth N8 that mouth N60 flow to next stage centrifugal extractor heavy phase import N10 again, the light phase import N2 of centrifugal extractor at the corresponding levels connects with the light phase export N3 of next stage centrifugal extractor, after this grade of centrifugal extractor inner extraction is separated, heavy phase repeats to enter in solution collection chamber 7 by feed pipe 1, repeat until heavy phase is collect mouth N6 to flow out by the low discharge of the reflux at the corresponding levels of afterbody centrifugal extractor mutually, be final liquid receiving mouth.
Should illustrate time, the inner actual determination compared of centrifugal extractor, must determine according to factors such as the concrete physical property for the treatment of material, two-phase density contrasts.Compare after determining once inner actual, can conveniently by regulating discrepancy in elevation h, the flow Q11 of adjustment backflow, can realize required inside actual flow ratio.
Claims (10)
1. a centrifugal extractor external reflux at the corresponding levels, is characterized in that: this external reflux at the corresponding levels comprises closed solution collection chamber (7); The upside of described solution collection chamber (7) is installed with upper cover (2), is the feed pipe (1) that exports (N4) and be connected to insert solution collection chamber (7) inside through upper cover (2) mutually with the low discharge on centrifugal extractor; It is the return duct (10) that is connected of import (N1) and low discharge is mutually liquid discharge device mutually that the bottom of described solution collection chamber (7) is respectively equipped with the low discharge on centrifugal extractor, and described low discharge is the import of import higher than described return duct (10) of liquid discharge device mutually.
2. a kind of centrifugal extractor external according to claim 1 reflux at the corresponding levels, its feature exists: the upper opening of the shape of described upper cover (2), size and solution collection chamber (7) matches, and described solution collection chamber (7) is set to cylindrical or square groove shape; Described upper cover (2) and solution collection chamber (7) are fixed together by bolt (4); The sealing gasket (3) of sealing solution collection chamber (7) internal liquid is provided with between the upper opening of described upper cover (2) and solution collection chamber (7).
3. a kind of centrifugal extractor external according to claim 1 reflux at the corresponding levels, its feature exists: the interior sidewall surface at its upper opening place close of described solution collection chamber (7) is installed with annular backing plate (5), described annular backing plate (5) is provided with and makes the uniform liquid in inflow solution collection chamber (7), without the porous plate (6) entered with impacting in chamber; (6) are laid with through hole to described porous plate equably.
4. a kind of centrifugal extractor external according to claim 1 reflux at the corresponding levels, is characterized in that: described feed pipe (1) is arranged on the center position of upper cover (2); The top of described return duct (10) and the bottom of solution collection chamber (7) flush, described return duct (10) and low discharge be mutually liquid discharge device away from each other, and described return duct (10) and low discharge be mutually liquid discharge device on locus all away from the entrance location of feed pipe (1) on upper cover (2).
5. the reflux at the corresponding levels of a kind of centrifugal extractor external according to claim 1 or 4, is characterized in that: described low discharge is that the discrepancy in elevation (h) be embedded between the inner import in solution collection chamber (7) and solution collection chamber bottom interior surface of liquid discharge device is adjustable mutually.
6. a kind of centrifugal extractor external according to claim 5 reflux at the corresponding levels, it is characterized in that: described low discharge is that to comprise the low discharge be fixedly connected with solution collection chamber (7) be drain pipe (9) to liquid discharge device mutually mutually, to be drain pipe (9) be mutually set to straight length with joining one section of solution collection chamber (7) to described low discharge, and low discharge is the top of drain pipe (9) and the bottom of solution collection chamber (7) mutually flushes; Described low discharge is that liquid discharge device also comprises short tube (8) mutually, it is in the straight length of drain pipe (9) mutually that the lower nozzle of described short tube (8) is plugged in low discharge, the upper orifice of short tube (8) and import are higher than the bottom interior surface of solution collection chamber (7), and described short tube (8) is plug depth adjustable in the straight length of drain pipe (9) mutually at low discharge.
7. a kind of centrifugal extractor external according to claim 6 reflux at the corresponding levels, it is characterized in that: described low discharge is form threaded engagement between drain pipe (9) and short tube (8) mutually, wherein, low discharge is that the straight length inside on drain pipe (9) top arranges internal thread mutually, short tube (8) outer setting has external screw thread, and low discharge is internal thread length on drain pipe (9) is mutually greater than external thread length on short tube (8);
Or, described low discharge is that drain pipe (9) is set to plug-in with short tube (8) and coordinates mutually, wherein, low discharge is be provided with sealing ring (11) between drain pipe (9) and short tube (8) mutually, and low discharge is be processed into interference fits between the inner surface of drain pipe (9) and the outer surface of short tube (8) mutually.
8. a kind of centrifugal extractor external according to claim 7 reflux at the corresponding levels, is characterized in that: the internal face at the upper orifice place of described short tube (8) is set to be convenient to the interior hexagonal shape of wrench operated.
9. a kind of centrifugal extractor external according to claim 1 reflux at the corresponding levels, it is characterized in that this external reflux at the corresponding levels with the connecting mode of centrifugal extractor is: be that import (N1) place adds three-way pipe (12) mutually at the low discharge of centrifugal extractor, the low discharge of separation to be extracted is entered by supervisor's mouth (N8) of three-way pipe (12) mutually, the solution inlet port (N5) of reflux at the corresponding levels is export (N4) to be connected with the low discharge of centrifugal extractor mutually, and the return duct of reflux at the corresponding levels outlet (N7) is connected by flexible pipe (13) with the other mouth of pipe (N80) of described three-way pipe (12).
10. a kind of centrifugal extractor external according to claim 8 reflux at the corresponding levels, it is characterized in that: the low discharge in reflux at the corresponding levels is the low discharge of liquid discharge device is mutually collect mouth (N6) to be connected by flexible pipe (13) with supervisor's mouth (N8) of the three-way pipe (12) of next stage centrifugal extractor mutually, return duct outlet (N7) of reflux at the corresponding levels is connected by flexible pipe (13) with the other mouth of pipe (N80) of centrifugal extractor three-way pipe (12) at the corresponding levels, in centrifugal extractor at the corresponding levels, the import of another phase system exports UNICOM with this phase of next stage centrifugal extractor thus forms plural serial stage counter-current extraction system, the low discharge of the reflux at the corresponding levels of afterbody centrifugal extractor is collect the final eluate collection mouth that mouth (N6) forms this phase mutually.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105013208A (en) * | 2014-04-23 | 2015-11-04 | 郑州天一萃取科技有限公司 | Detachable heavy phase weir of centrifugal extraction machine |
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