CN102179316A - Centrifugal machine, and method for separating liquid from superfine powder by using centrifugal machine - Google Patents
Centrifugal machine, and method for separating liquid from superfine powder by using centrifugal machine Download PDFInfo
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- CN102179316A CN102179316A CN2010106227913A CN201010622791A CN102179316A CN 102179316 A CN102179316 A CN 102179316A CN 2010106227913 A CN2010106227913 A CN 2010106227913A CN 201010622791 A CN201010622791 A CN 201010622791A CN 102179316 A CN102179316 A CN 102179316A
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Abstract
The invention provides a centrifugal machine, and a method for separating liquid from superfine powder by using the centrifugal machine. The centrifugal machine comprises a revolving drum and a liquid discharging device; the revolving drum comprises side walls in which hole are not formed and a bottom which is combined with the side walls to accommodate the mixed material of liquid and the superfine powder; the revolving drum can rotate around a central shaft of the revolving drum; the liquid discharging device comprises a pipeline for discharging the separated liquid and the liquid in the mixed material of the superfine powder outside the revolving drum; the pipeline comprises a first end and a second end which are communicated with flow; the first end is arranged in the revolving drum; and the second end is arranged outside the revolving drum.
Description
Technical field
The present invention relates to a kind of centrifuge and centrifugal separation method, particularly a kind of centrifuge and centrifugal separation method that is used for separating liquid and attritive powder.
Background technology
Along with the development of powder metallurgy industry, the demand of feed metal powder is improved constantly.In metal injection moulding technology (MIM), used particles of powder must be very thin, has high tap density and low oxygen content.Fine powder has increased the contact point between the particle, can be under lower sintering temperature sintering and have higher sintered density.Relative density behind the sintering uprises with the reduction of particle size, and therefore the average-size of the powder of MIM use should be about 10 μ m usually.
In addition, in diamond tool, just develop towards direction ultra-fine, hypoxemia as the pre-alloyed powder of bond.Powder size is more little, and specific area is big more, and the surface can be high more, can obviously reduce sintering temperature, adopts the goods of superfines sintering to obtain thinner and uniform grain structure easily simultaneously.
Existing industrial milling method has multiple, and wherein current high speed impact melt metal liquid stream is used in water atomization powder process, thereby makes metal liquid stream be broken into powder.Because the powder size that water atomization is made is thin, output is big, and chemical composition is wide, and cost is low, so water atomization is widely adopted.The water atomization flouring technology comprises the step that batching, smelting, atomizing, powder dehydration, vacuum drying, annealing, the sieve division and combination carried out are successively criticized.
Because melt metal liquid stream is by after the water atomization, the metal dust of generation is collected in the powder collecting pot with water, therefore need powder and moisture from so that enter subsequently drying process.Therefore how many direct drying efficiency and oxygen contents that influence powder that water is removed in the dehydration must try one's best water is taken off totally; In addition, have the part powder in this process and lose, cause the raw metal loss, so powder is directly related with economic benefit with the separating technology of water with current.
One of conventional method is to make the compound of metal dust and water leave standstill a period of time, makes powder free settling, by getting rid of the upper strata clear water, reaches the dehydration purpose subsequently.Required sedimentation time of this method is long, and it is unfavorable that compact serialization is produced, and often becomes the wait or the controlling unit of technology.In addition, along with development of technology, prepared powder little, required sedimentation time that further attenuates is more and more longer, makes production procedure be difficult to smooth linking.
According to Stokes sedimentation formula, the relation between the sinking speed of powder and the granule size of powder can be represented by the formula:
V ∝ r
2(ρ
Gu-ρ
Liquid)/η
Wherein, v represents the powder sinking speed, and r represents the powder diameter, and ρ represents density, and η represents the viscosity of water.By calculating as can be known, when the diameter of powder of stainless steel becomes very tiny, for example during 5 μ m, its sinking speed is very low, and 500 millimeters required times of settling height are tens hours, and are infeasible fully on technology.Adopt this method, can cause the loss (powder is thin more often, and its added value is high more) of a large amount of attritive powders in producing drainage procedure.
Metal dust and moisture from additive method also have filter press technique and centrifuge dripping method.Filter press technique is to fix a drainpipe in the powder collecting pot bottom, spreads the multilayer filter cloth at the inner surface of powder collecting pot, injects the compound of water and powder then; The lid that has breather pipe is fastened on the powder collecting pot, and bubbling air or nitrogen under the effect of gas pressure water is discharged by filter cloth, and powder are retained down.The centrifuge dripping method is to spread filter cloth at the centrifuge tank inner surface, and centrifuge rotates at a high speed, under action of centrifugal force water is discharged by filter cloth, thereby realizes that pigment separate.These two kinds of methods have separating effect preferably for thicker metal dust and glassware for drinking water, can realize serialization or semi-continuous production preferably.But these two kinds of methods are for fine metal dust (average grain diameter＜10 μ m), their application brings serious problem: (1) is if use the bigger filter cloth in aperture, then tiny metallic particles will be through filter cloth, so metal loss is big, and comparing thick powder loss late increases by 5%～10%; (2) if adopt the less filter cloth in aperture in order to improve recovery rate of iron, then fine metal particle is easy to stop up the filter cloth hole, water can not further be discharged, cause in the powder water content very high, directly prolong drying time subsequently, because the interior water vapour of dry still is too much, oxygen content in power sharply raises simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of method that can overcome the centrifuge of the one or more problems in the above problem and use this centrifuge separating liquid and attritive powder.
Centrifuge according to the present invention comprises rotary drum and pumping equipment, rotary drum comprises the sidewall of atresia and combines bottom with the compound of receiving fluids and attritive powder with sidewall, the central shaft rotation that rotary drum can rotate bulging, pumping equipment comprises the pipeline that is used for the liquid of the compound of separated liquid and attritive powder is discharged to the rotary drum outside, pipeline comprises first end and second end that fluid is communicated with, first end is arranged on the inside of rotary drum, and second end is arranged on the outside of rotary drum.
Pipeline also can comprise the bend that is connected to first end and be connected to the flat part of second end that the liquid that enters pipeline from first end can pass through bend, flat part and the second end discharge line in turn.
The opening that flows into for liquid of first end can be towards the side that rotates with liquid in the opposite direction.
Pumping equipment also can comprise the position adjusting mechanism that is arranged between first end and second end, and position adjusting mechanism is adjusted the position on first end at least one direction in the concentrically ringed tangential direction of the central axis direction of the radial direction of rotary drum, rotary drum, rotary drum.
Centrifuge also can comprise the drive unit that drives the central shaft rotation that rotary drum rotates bulging and with in the feed arrangement of the compound introducing rotary drum inside of liquid and attritive powder at least one.
Drive unit can pass the bottom of rotary drum along the central shaft of rotary drum, to be attached to the central boss of rotary drum.
Feed arrangement can comprise first end and second end that fluid is communicated with, and first end of feed arrangement can be arranged on the outside of rotary drum, and second end of feed arrangement can be arranged on the inside of rotary drum.
Second end of feed arrangement can be arranged on the position near the center of bottom of the drum.
Second end of feed arrangement can be towards the sidewall of rotary drum, and is 45 °～90 ° with the central shaft of rotary drum.
Feed arrangement can comprise and can bore with the centrifugal distribution that the rotation of rotary drum is rotated that the top at the center of the bottom that is arranged on rotary drum is bored in centrifugal distribution, and the opening of centrifugal distribution awl is towards the inside of rotary drum.
Centrifuge also can comprise the powder collection layer that is arranged on the inside surface of side wall.
Centrifuge also can comprise discharge gate, and discharge gate is arranged on the below, bottom of rotary drum, is used for the attritive powder after separating or attritive powder and liquid discharge rotary drum.
The bottom of rotary drum can comprise away from the sidewall of rotary drum and can be used for the attritive powder after separating or attritive powder and liquid discharge rotary drum by the opening of other member shutoff.
The present invention also provides a kind of method of using centrifuge separating liquid and attritive powder, this centrifuge comprises rotary drum and pumping equipment, rotary drum comprises the sidewall of atresia and combines bottom with the compound of receiving fluids and attritive powder with sidewall, pumping equipment comprises the pipeline that is used for the liquid of the compound of separated liquid and attritive powder is discharged to the rotary drum outside, pipeline comprises first end and second end that fluid is communicated with, first end is arranged on the inside of rotary drum, second end is arranged on the outside of rotary drum, and this method may further comprise the steps: the compound of liquid and attritive powder is introduced in the rotary drum; Make rotary drum around the rotation of its central shaft, make that the attritive powder in the compound is piled into the solid bed of material on the inside surface of side wall of rotary drum, and the liquid in the compound is squeezed and formed internal layer circulation above the solid bed of material and between the solid bed of material and central shaft; Make the liquid that forms internal layer circulation enter pipeline, then through the second end discharge line through first end; The solid bed of material is discharged rotary drum.
Method according to centrifuge of the present invention and this centrifuge separating liquid of use and attritive powder, can reasonably in the time liquid separated with attritive powder, and this time can be controlled by centrifugal force, that is to say centrifuge of the present invention and use this centrifuge separating liquid and the method for attritive powder can realize the rate of settling that can regulate and control.In addition, centrifuge of the present invention and use this centrifuge separating liquid and the method for attritive powder not to need filter cloth to catch attritive powder, thereby the problem of having avoided the use of filter cloth to bring, for example metal loss is greatly and/or filter cloth hole blocking problem.In addition, the method for centrifuge of the present invention and this centrifuge separating liquid of use and attritive powder can obtain high attritive powder recovery rate.
Description of drawings
By the detailed description of carrying out below in conjunction with accompanying drawing, above-mentioned and other purposes of the present invention and characteristics will become apparent, wherein:
Fig. 1 is the structural representation of centrifuge according to an embodiment of the invention;
Fig. 2 is the structural representation of centrifuge according to another embodiment of the present invention;
Fig. 3 is the structural representation according to the centrifuge of further embodiment of this invention;
Fig. 4 is the laser diffraction analysis figure as a result of the water of hydraulic atomized flouring technology preparation and the refining metallic powder in the refining metallic powder compound;
Fig. 5 is the laser diffraction analysis figure as a result that adopts the refining metallic powder in the water that conventional sedimentation discharges after water and refining metallic powder compound are handled and adopt the refining metallic powder of centrifugal separation method acquisition of the present invention.
The specific embodiment
Below, describe each embodiment of the present invention in detail with reference to accompanying drawing.
Fig. 1 is the structural representation of centrifuge 100 according to an embodiment of the invention.With reference to Fig. 1, centrifuge 100 comprises rotary drum 110 and pumping equipment 120 according to an embodiment of the invention.
Though a pumping equipment 120 has been shown among Fig. 1, can have comprised along the concentrically ringed hoop of rotary drum 110 and/or along a plurality of pumping equipments that radially are arranged on diverse location of rotary drum 110 according to the centrifuge of the embodiment of the invention.Comprise first end 121 of introducing liquid though pumping equipment 120 has been shown among Fig. 1, can comprise along the concentrically ringed hoop of rotary drum 110 and/or along a plurality of first ends of radially being arranged on diverse location of rotary drum 110 according to the pumping equipment of the centrifuge of the embodiment of the invention.Though the position adjusting mechanism 123 that has illustrated among Fig. 1 in the pumping equipment 120 is used to adjust first end 121 of pipeline 124 along rotary drum 110 position radially, but according to embodiments of the invention, position adjusting mechanism 123 also can be adjusted first end 121 along the central shaft Y of rotary drum 110 and/or along the position of the concentrically ringed hoop of rotary drum 110 by at least a type of drive (for example, screw drive, motor-driven and/or hydraulic-driven).
Centrifuge 100 also can comprise the drive unit 130 that drives rotary drum 110 rotations and be used to introduce the feed arrangement 140 of the compound of liquid and attritive powder according to an embodiment of the invention.Drive unit 130 is attached to the center of the bottom 112 of rotary drum 110, rotates around its central shaft Y to drive rotary drum 110.More particularly, drive unit 130 can pass the bottom 112 of rotary drum 110 along the central shaft Y of rotary drum 110, with the central boss 113 that is attached to rotary drum 110, thereby realizes firm combination between rotary drum 110 and the drive unit 130.Feed arrangement 140 comprises first end and second end that fluid is communicated with, first end of feed arrangement 140 is arranged on the outside of rotary drum 110, second end of feed arrangement 140 is arranged in the rotary drum 110, the position at close 112 centers, bottom (for example, along continuous straight runs is the predetermined distance in 112 center and/or another predetermined distance of 112 center apart from the bottom vertically apart from the bottom), and away from the sidewall 111 of rotary drum 110.Enter feed arrangement 140 as the compound of the liquid of raw material and attritive powder via first end of feed arrangement 140, enter rotary drum 110 inside via second end then.
Second end of feed arrangement 140 is towards the sidewall 111 of rotary drum 110, and is 45 °～90 ° with the central shaft Y of rotary drum 110.If the angle that second end of feed arrangement 140 and central shaft Y are is less than 45 °, then can occur liquid and attritive powder compound advance to spatter, and the compound of liquid and attritive powder can not reach drum speed fast, thereby is unfavorable for the continuous operations of centrifuge.If the angle that second end of feed arrangement 140 and central shaft Y are greater than 90 °, then may cause compound not discharge smoothly from second end of feed arrangement 140.
Centrifuge 100 also can comprise the lip-deep powder collection layer (cloth bag for example of the sidewall 111 that is arranged on rotary drum 110 according to an embodiment of the invention, not shown), perhaps be arranged on the sidewall 111 of rotary drum 110 and the lip-deep powder collection layer (for example cloth bag is not shown) of bottom 112.Centrifuge 100 also can comprise and is used to hold the housing 150 of rotary drum 110 and the support 160 of support housing 150 according to an embodiment of the invention.
The method of the compound of centrifuge 100 separating liquids and attritive powder according to an embodiment of the invention of using will be described now.
At first, use feed arrangement 140 that the compound of liquid and attritive powder is introduced rotary drum 110 inside.More particularly, can use the mode of slush pump or flow by gravity that compound is sent to feed arrangement 140, compound is introduced in the inside of rotary drum 110 through feed arrangement 140 then.
Then, rotary drum 110 produces controlled centrifugal force around its central shaft Y rotation.Because the density of the attritive powder in the compound is greater than density of liquid, so under action of centrifugal force, attritive powder is deposited on the sidewall 111 of rotary drum 110, form the closelypacked solid bed of material 200, and liquid is squeezed above the solid bed of material 200, forms internal layer circulation between the solid bed of material 200 and central shaft Y.Internal layer liquid after the clarification has certain angular speed, with rotary drum 110 motions.When along with continuous charging, when internal layer liquid touched first end 121 of pipeline 124, the kinetic energy that has because of angular speed of internal layer liquid changed potential energy into, formed certain dynamic pressure, so internal layer liquid is discharged rotary drums 110 by pumping equipment 120.
Afterwards, rotary drum 110 stops the rotation.On the surface of the dismountable sidewall 111 that is arranged on rotary drum 110 or be arranged on the sidewall 111 of rotary drum 110 and the lip-deep powder collection layer of bottom 112, and the open top by rotary drum 110 takes out the powder collection layer, takes off the attritive powder that is deposited on the powder collection layer then.Under the situation that is not provided with the powder collection layer, can the artificially take out the attritive powder on the sidewall 111 that is deposited on rotary drum 110.
Method according to the compound of use centrifuge separating liquid of the present invention and attritive powder is not limited to the above.For example, can at first make rotary drum 110 rotations, then by feed arrangement 140 chargings.Again for example, make rotary drum 110 rotations after can a charging finishing, also can in the process of rotary drum 110 rotations, continue charging.
Fig. 2 be according to another embodiment of the present invention centrifuge 100 ' structural representation.With reference to Fig. 2, centrifuge 100 ' be also to comprise the discharge gate 170 of the bottom that is arranged on rotary drum 110 according to another embodiment of the present invention with the difference of the centrifuge of describing with reference to Fig. 1 100.Discharge gate 170 is used for the attritive powder after separating or attritive powder and small amount of liquid discharge rotary drum 110.
In using the method for the compound of centrifuge 100 ' separating liquid and attritive powder according to another embodiment of the present invention, can be after rotary drum 110 stops the rotation, by discharge gate 170 attritive powder and remaining liquid are discharged, but the water content height of this discharging method.Selectively, can keep under the situation of low speed rotation at rotary drum 110, discharge remaining liquid by discharge gate 170, rotary drum 110 stops the rotation then, and by the upper opening taking-up attritive powder of rotary drum, but the labour intensity of this discharging method is big.
Fig. 3 is the centrifuge 100 according to further embodiment of this invention " structural representation.With reference to Fig. 3, according to the centrifuge 100 of further embodiment of this invention " the feeding manner and the marker method of the centrifuge 100 that can describe with reference Fig. 1 of feeding manner and marker method different.
Specifically, centrifuge 100 according to further embodiment of this invention " comprise centrifugal distribution awl 180; centrifugal distribution awl 180 be arranged on the bottom 112 of rotary drum 110 ' the top at center; its opening is towards the inside of rotary drum 110; preferably towards the bottom 112 of rotary drum 110 ', more preferably towards the bottom 112 of rotary drum 110 ' the center.In one embodiment, centrifugal distribution awl 180 can be arranged on the top of the central boss 113 of rotary drum 110.One end of centrifugal distribution awl 180 is communicated with exterior line with the compound with liquid and attritive powder and is incorporated into rotary drum 110 inside, and the other end (being opening) is towards the inside of rotary drum 110.In addition, centrifugal distribution awl 180 can be with rotary drum 110 rotations.
At the centrifuge 100 that uses according to further embodiment of this invention " in the feed step of the method for the compound of separating liquid and attritive powder; centrifugal distribution awl 180 can be with rotary drum 110 rotations; when the compound of liquid and attritive powder arrives the poppet surface (being the end of opening) of centrifugal distribution awl 180; around compound is thrown toward under action of centrifugal force; arrive the sidewall 111 of rotary drum 110; thus when realizing the charging uniform distribution, make compound realize preliminary centrifugal force sedimentation separation.Centrifuge 100 according to further embodiment of this invention " an advantage be not need to use the feed arrangement that stretches into rotating rotary drum inside, mobilely do not have an adverse effect to what be in compound in the centrifugal separation processes.In addition, no matter the rotating speed height all can be realized the uniform distribution of compound, thereby guarantee the steady and continuous work of centrifuge.
In addition, at centrifuge 100 according to further embodiment of this invention " in, the bottom 112 of rotary drum 110 ' comprise is away from sidewall 111 and can be by the opening 114 of other member shutoff.Particularly, the bottom 112 ' whole marginal portion engage fully with sidewall 111, but in the bottom 112 ' away from the part of sidewall 111 (for example, bottom 112 ' the center near part) be provided with opening 114, for example make bottom 112 ' the part away from sidewall 111 can be unlimited fully." in the discharge step of the method for the compound of separating liquid and attritive powder, in the process that rotary drum 110 rotates at a high speed, opening 114 can be by other member shutoff at the centrifuge 100 that uses according to further embodiment of this invention; In rotary drum 110 low speed rotation processes or after rotary drum 110 stops the rotation, can easily discharge attritive powder after the separation by opening 114.
Above-described various feeding manner and marker method can make up according to actual needs.For example, in semicontinuous separating technology, at least a mode that can adopt direct impouring charging, feed arrangement 140 chargings, centrifugal distribution to bore in 180 chargings is carried out charging, in employing drum inner wall and the powder collection layer at least one gathers materials, by at least one discharge in rotary drum 110 open tops and the discharge gate 170.In the separating technology of serialization, at least a mode that can adopt direct impouring charging, feed arrangement 140 chargings, centrifugal distribution to bore in 180 chargings is carried out charging, by opening 114 discharges.
Centrifuge according to the embodiment of the invention can be realized Separation of Solid and Liquid.Specifically, be applicable to separating of liquid (for example water, organic solvent etc.) and attritive powder (for example metal, ceramic powders, organic matter etc.) according to the centrifuge of the embodiment of the invention; More particularly, be applicable to separating of water and refining metallic powder; Further say, be applicable to that water and granularity are the separating of refining metallic powder of 0.01 μ m-500 μ m; Further say, be applicable to that water and granularity are the separating of refining metallic powder of 0.01 μ m-100 μ m; Further say, be applicable to that water and granularity are the separating of refining metallic powder of 0.1 μ m-100 μ m; Further say, be applicable to that water and granularity are the separating of refining metallic powder of 0.1 μ m-10 μ m; Further say, be applicable to that water and granularity are the separating of refining metallic powder of 1 μ m-10 μ m.
Illustrate in further detail according to centrifuge of the present invention with according to the method for separating liquid of the present invention and attritive powder below in conjunction with Comparative Examples and example.
Comparative Examples:
Adopt conventional sedimentation to separate the water of hydraulic atomized flouring technology preparation and water and the refining metallic powder in the refining metallic powder compound.Atomizing medium is conventional urban water, and the refining metallic powder material is the 316L stainless steel.Not separated atomized powder is tested through laser particle analyzer, median granularity of quality D50 is 13.2 μ m, (wherein, peak-shaped curve is represented the curve of the percent by volume that each granularity is shared to the laser testing analysis result of refining metallic powder, and it is corresponding to the ordinate in left side as shown in Figure 4; The domatic curve is the integral curve of peak-shaped curve, and it is corresponding to the ordinate on right side).Powder subsider compound liquid level height is 1.5 meters, and the sedimentation time is 20 minutes.
After sedimentation is intact, carry out draining.From the water of being arranged, take a sample, show and contain a certain amount of metal dust.The refining metallic powder of sedimentation dehydrates for a long time through baking oven, and calculating powder loss late (the loss amount of metal accounts for the raw-material percentage of stainless steel metal) after the weighing is about 2%, and promptly the metal dust recovery rate is about 98%.Determine the granularity of powder of loss with laser diffraction analysis, its median granularity of quality D50 is 5.2 μ m, and (wherein, peak-shaped curve is represented the curve of the percent by volume that each granularity is shared, and it is corresponding to the ordinate in left side as shown in Figure 5; The domatic curve is the integral curve of peak-shaped curve, and it is corresponding to the ordinate on right side).
Example 1:
Refining metallic powder in the water of discharging in the centrifuge according to another embodiment of the present invention 100 ' above-mentioned Comparative Examples of separation of employing with reference to Fig. 2 description.
Specifically, start drive unit 130, drive unit 130 drives the speed rotation that rotary drum 110 changes with per minute 1300.In addition, by position adjusting mechanism 123 water inlet (i.e. first end 121) of pipeline 124 is adjusted to the position of the central shaft Y of the most close rotary drum 110.Afterwards, the water of discharging in the above-mentioned Comparative Examples is introduced rotary drum 110 inside by feed arrangement 140, flow is 10 liters/minute.Regulate the position of pipeline 124 after 3 minutes, make its central side that arrives annular water flow in rotary drum, make the edge of current be in the center of pipeline 124 openings (i.e. first end 121), begin to stablize draining, until anhydrous discharge.Make rotary drum 110 continuous services after 2 minutes, further slow movement pipeline 124 is discharged surplus water gradually.Separation finishes, and metal dust and low amounts of water are discharged from discharge gate 170.By analysis, its laser particle size Measurement results is similar to Fig. 5, shows that the granularity of this metal dust is suitable with the sampling granularity in the Comparative Examples.By the method for example 1, the metal dust recovery rate (comparing with the raw material total amount) of the method for only using Comparative Examples 1 has been improved about 1.5%, promptly the metal dust recovery rate is about 99.5%.
According to the method for centrifuge of the present invention and this centrifuge separating liquid of use and attritive powder, can reasonably in the time liquid separated with attritive powder, and this time can be controlled by centrifugal force.That is to say centrifuge of the present invention and use this centrifuge separating liquid and the method for attritive powder can realize the rate of settling that can regulate and control.
In addition, centrifuge of the present invention and use this centrifuge separating liquid and the method for attritive powder not to need filter cloth to catch attritive powder, thereby the problem of having avoided the use of filter cloth to bring, for example metal loss is greatly and/or filter cloth hole blocking problem.
In addition, the method for centrifuge of the present invention and this centrifuge separating liquid of use and attritive powder can obtain high attritive powder recovery rate.
Claims (14)
1. a centrifuge is characterized in that comprising rotary drum and pumping equipment,
Rotary drum comprises the sidewall of atresia and combines bottom with the compound of receiving fluids and attritive powder with sidewall, the central shaft rotation that rotary drum can rotate bulging,
Pumping equipment comprises the pipeline that is used for the liquid of the compound of separated liquid and attritive powder is discharged to the rotary drum outside, and pipeline comprises first end and second end that fluid is communicated with, and first end is arranged on the inside of rotary drum, and second end is arranged on the outside of rotary drum.
2. centrifuge according to claim 1 is characterized in that, pipeline also comprises the bend that is connected to first end and be connected to the flat part of second end that the liquid that enters pipeline from first end passes through bend, flat part and the second end discharge line in turn.
3. centrifuge according to claim 1 and 2 is characterized in that, the opening that flows into for liquid of first end towards the side that rotates with liquid in the opposite direction.
4. centrifuge according to claim 1, it is characterized in that, pumping equipment also comprises the position adjusting mechanism that is arranged between first end and second end, and position adjusting mechanism is adjusted the position on first end at least one direction in the concentrically ringed tangential direction of the central axis direction of the radial direction of rotary drum, rotary drum, rotary drum.
5. centrifuge according to claim 1 is characterized in that, described centrifuge also comprises the drive unit that drives the central shaft rotation that rotary drum rotates bulging and with in the feed arrangement of the compound introducing rotary drum inside of liquid and attritive powder at least one.
6. centrifuge according to claim 5 is characterized in that, drive unit passes the bottom of rotary drum along the central shaft of rotary drum, to be attached to the central boss of rotary drum.
7. centrifuge according to claim 5 is characterized in that, feed arrangement comprises first end and second end that fluid is communicated with, and first end of feed arrangement is arranged on the outside of rotary drum, and second end of feed arrangement is arranged on the inside of rotary drum.
8. centrifuge according to claim 7 is characterized in that, second end of feed arrangement is arranged on the position near the center of bottom of the drum.
9. centrifuge according to claim 7 is characterized in that, second end of feed arrangement is towards the sidewall of rotary drum, and is 45 °～90 ° with the central shaft of rotary drum.
10. centrifuge according to claim 5, it is characterized in that, described feed arrangement comprises and can bore with the centrifugal distribution that the rotation of rotary drum is rotated that the top at the center of the bottom that is arranged on rotary drum is bored in centrifugal distribution, and the opening of centrifugal distribution awl is towards the inside of rotary drum.
11. centrifuge according to claim 1 is characterized in that, described centrifuge also comprises the powder collection layer that is arranged on the inside surface of side wall.
12. centrifuge according to claim 1 is characterized in that, described centrifuge also comprises discharge gate, and discharge gate is arranged on the below, bottom of rotary drum, is used for the attritive powder after separating or attritive powder and liquid discharge rotary drum.
13. centrifuge according to claim 1 is characterized in that, the bottom of rotary drum comprises away from the sidewall of rotary drum and can be used for the attritive powder after separating or attritive powder and liquid discharge rotary drum by the opening of other member shutoff.
14. method of using centrifuge separating liquid and attritive powder, described centrifuge comprises rotary drum and pumping equipment, rotary drum comprises the sidewall of atresia and combines bottom with the compound of receiving fluids and attritive powder with sidewall, pumping equipment comprises the pipeline that is used for the liquid of the compound of separated liquid and attritive powder is discharged to the rotary drum outside, pipeline comprises first end and second end that fluid is communicated with, first end is arranged on the inside of rotary drum, second end is arranged on the outside of rotary drum, it is characterized in that said method comprising the steps of:
The compound of liquid and attritive powder is introduced in the rotary drum;
Make rotary drum around the rotation of its central shaft, make that the attritive powder in the compound is piled into the solid bed of material on the inside surface of side wall of rotary drum, and the liquid in the compound is squeezed and formed internal layer circulation above the solid bed of material and between the solid bed of material and central shaft;
Make the liquid that forms internal layer circulation enter pipeline, then through the second end discharge line through first end;
The solid bed of material is discharged rotary drum.
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| CN105032633A (en) * | 2015-07-07 | 2015-11-11 | 蚌埠市兴利离心机制造有限公司 | Centrifugal machine good in material separating effect |
| CN105413851A (en) * | 2015-12-11 | 2016-03-23 | 大连远东新材料科技有限公司 | Method and device for separating oil-bearing metal powder |
| CN107321507A (en) * | 2017-05-27 | 2017-11-07 | 宜兴市华鼎机械有限公司 | A kind of horizontal centrifuge for removing hydrops |
| CN109019581A (en) * | 2018-07-13 | 2018-12-18 | 北京欧美中科学技术研究院 | A kind of commercial scale plant for purification of graphite oxide alkene solution |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103648653A (en) * | 2011-11-24 | 2014-03-19 | Bma布伦瑞克机器制造有限公司 | Discontinuous centrifuge comprising a scraper for scraping away a product |
| CN103648653B (en) * | 2011-11-24 | 2016-06-29 | Bma布伦瑞克机器制造有限公司 | There is the intermittent centrifuge of scraper for striking off product |
| US9764337B2 (en) | 2011-11-24 | 2017-09-19 | Bma Braunschweigische Maschinenbauanstalt Ag | Discontinuous centrifuge with a scraper for scraping a product |
| CN103008118A (en) * | 2012-12-30 | 2013-04-03 | 张家港市轻工设备厂 | Centrifugal machine special for starch |
| CN105032633A (en) * | 2015-07-07 | 2015-11-11 | 蚌埠市兴利离心机制造有限公司 | Centrifugal machine good in material separating effect |
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| CN105413851B (en) * | 2015-12-11 | 2018-12-28 | 大连远东新材料科技有限公司 | A kind of method and device separating oil-containing metal powder |
| CN107321507A (en) * | 2017-05-27 | 2017-11-07 | 宜兴市华鼎机械有限公司 | A kind of horizontal centrifuge for removing hydrops |
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| CN109925786A (en) * | 2019-04-24 | 2019-06-25 | 杨国忠 | Electrical process machine working fluid solid impurity separator |
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Application publication date: 20110914 |