CN104689925B - Multistage classifier and classification method of superfine diamond micro-powder particles - Google Patents
Multistage classifier and classification method of superfine diamond micro-powder particles Download PDFInfo
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- CN104689925B CN104689925B CN201510101881.0A CN201510101881A CN104689925B CN 104689925 B CN104689925 B CN 104689925B CN 201510101881 A CN201510101881 A CN 201510101881A CN 104689925 B CN104689925 B CN 104689925B
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Abstract
The invention relates to a multistage classifier and a classification method of superfine diamond micro-powder particles. The multistage classifier and the classification method can precisely classify particle sizes of the superfine diamond micro-powder particles within a narrow range. The multistage classifier is formed by combining a mixing tower, a classifier part, a circulation device and an automatic program control system, wherein the mixing tower is internally provided with a stirring device and communicated with a bottom feed nozzle of the classifier part; the mixing tower is communicated with a material bearing box via a return pipeline; the classifier part comprises a head component, a rotating drum component and a motor driving component; the rotating drum component is a rotating drum internally equipped with a material liquid cavity; a supernate outlet, a coarse material liquid outlet and a feed nozzle are formed in the rotating drum; the head component comprises a head and a head spindle; the motor driving component comprises a classifier variable-frequency motor; the circulation device comprises the material bearing box and a circulation pump; the material bearing box recovers material liquid to be selected from the classifier part; and the circulation pump conveys the material liquid back to the mixing tower. The classifier covers the shortages of a too wide particle size classification range of superfine diamond micro-powder and presence of large particles in the micro-powder at home; the current superfine diamond micro-powder product structure is perfected, the classification efficiency is improved, and the classifier is originated at home for particle size classification of the superfine diamond micro-powder.
Description
Technical field
The present invention relates to a kind of granularity Accurate Classification that close limit can be carried out to ultra-fine diamond micro powder granule is ultra-fine
Diadust particle multistage grader and stage division.
Background technology
Either natural or synthetic diamond micropowder is all current superhard refined abrasive a kind of in the world.With high-new skill
The development of art, it is more and more extensive in the application of each industrial department.After artificial metal and stone input commercial scale, west
The carbonado that square industrially developed country consumes is about 10000 myriagrams and draws, and wherein the consumption of diadust is close to
10%, the grainding capacity of diamond is bigger than cubic boron nitride 1. 25 times, bigger than carborundum by 2. 85～3. 57 times, than
White fused alumina is big by 6. 25～and 7. 14 times.So diadust is used as a kind of super hard abrasive, with the grinding energy being unsurpassed in excellence
Power, the grainding capacity of diadust include the wear-resistant and anti-grindability of the grinding capacity to workpiece and itself, depend on
In its microhardness, granularity, intensity, grain shape and heat stability and chemical stability.Diadust is used as abrasive material
Using there is three broad aspects:For in industrial, science and medically various precision components fine grinding or polishing；For
The manufacture of resin bood tool, metal bonded tools and plating tool；It is used for mould processing, gem-jade as refined abrasive to throw
Light processing, jewel bearing processing and manufacturing；In addition to as grinding-material, another big purposes is just used as work(to diadust
Can material；Its thermal property and electrical properties etc. are utilized for example.Thermosetting resin polymer, fiber are mixed into diadust
Among element, phenolic resin or potsherd, can be made into a kind of with the new material for improving thermal conductivity and reduction thermal expansivity；
Diadust is mixed into sheet metal, such as may be made with nickel sheet or stainless steel substrates that thermal conductivity is high, thermal expansivity is low and weight
Light novel sheet material, can make highly dense high energy device in the electronics industry for thermal control.
From diamond be used as grinding-material form for, the diadust 60% that the whole world is industrially consumed with
On be for making diamond paste, diadust mixture and diadust lapping liquid.
The dimensionings such as the progress of current high-precision grinding technology, flatness, the depth of parallelism, glacing flatness in part processing
Very little aspect can obtain more accurate tolerance, and the subject matter that attrition process industry faces is requirement finished surface without any trickle
The defects such as cut.These defects how are eliminated, four factors are depended primarily on：The uniformity of diadust granularity, diamond
The grain shape of micropowder, mixed proportion and purity and support chemistry, wherein current for the uniformity of diadust granularity
Jing develops into that grading is more and more thinner, the more and more narrow level of size fraction ranges, but super fine grading precision is not high
The bottleneck of China's tool made of superhard material development is restricted always, numerous domestic enterprise is also making great efforts research, but effect one for many years
It is straight undesirable.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art and provide one kind can be micro- to ultra-fine diamond
Powder particles carry out the ultra-fine diamond micro powder granule multi-stage classifier and stage division of the granularity Accurate Classification of close limit, make ultra-fine
Powder size grading range reaches：0--10 μm, minimum zone 0--50nm.
The technical scheme is that what is be achieved in that：
A kind of ultra-fine diamond micro powder granule multi-stage classifier, by batch mixing tower, grader, circulating device and auto-programming control
Four part of system processed combines, it is characterised in that：
A, the height of batch mixing tower are arranged on 3 meters, for providing supply pressure 0.03MPa of feed liquid in batch mixing tower, in batch mixing
The agitating device for preventing feed liquid from reuniting is provided with tower, the agitating device includes the changed stirring speed installed in batch mixing top of tower
The batch mixing tower frequency conversion motor of degree and be connected with batch mixing tower frequency conversion motor in batch mixing tower to the feed liquid in batch mixing tower
It is stirred scattered rustless steel stirring paddle；Discharging opening is offered and by discharge opening pipeline and grader bottom in batch mixing tower bottom
Portion's feed nozzle is connected, and high-precision manual control valve is provided with discharge opening pipeline, and the valve is to the material into grader
Flow quantity is implemented to be precisely controlled, and offers charging aperture on batch mixing tower top, and the charging aperture is connected with material containing box by feed back pipeline
It is logical, it is responsible for accepting the feed liquid from material containing box；
B, grader include head part, the inside with fuselage door be rotary drum rotate cavity fuselage, by fuselage door
Rotary drum part in cavity, the electric-motor drive part on fuselage are rotated installed in rotary drum, rotary drum part for inside is
The rotary drum of feed liquid cavity, offers supernatant outlet on rotary drum top, and bottom offers thick material liquid outlet, and bottom central part is
The feed nozzle of classification motor spindle is opened in, head part includes head, the head spindle on head and is arranged on machine
Protective cover on head, electric-motor drive part include grader frequency conversion motor and grader frequency conversion motor on fuselage
Belt pulley on output shaft, head spindle pass through head spindle belt pulley, belt, pinch roller, grader frequency conversion motor output shaft
On belt pulley be connected with grader frequency conversion motor, the upper end of rotary drum is connected with the head spindle in head part, rotary drum
Lower end be arranged in the sliding bearing that rotary drum rotates cavity bottom, rotate the upper of the rotary drum top in cavity in the rotary drum of fuselage
Purified liquor outlet lower position, is provided with supernatant drip tray along rotary drum surrounding；
C, circulating device include the circulating pump that material containing box and material containing box are connected, and circulating pump is arranged on material containing box top, and
It is inserted in material containing box by circulating pump feed pipe and is connected with the material containing box, circulating pump passes through feed back pipeline and batch mixing tower top
The charging aperture for opening up is connected with batch mixing tower, and batch mixing tower is responsible for accepting the feed liquid from material containing box；Load is offered on material containing box
Magazine charging aperture, material containing box are connected with the coarse fodder liquid discharging opening of grader by the material containing box charging aperture and material containing box feed pipe
Logical, material containing box also passes through the supernatant drip tray of the material containing box supernatant charging aperture and material containing box supernatant feed pipe and grader
Discharging opening be connected, material containing box is reclaimed and is transmitted back to batch mixing tower from grader feed liquid to be selected and by circulating pump.
Batch mixing tower the whole body be stainless steel, by 3 root posts support, for feed liquid is sufficiently stirred for so that feed liquid with
Discrete form enters into grader, expects that tower height degree determines the constant of material pressure, and discharge valve ensures that material enters grader stream
The stability of amount.
It is 0.5 40% scope that the concentration of feed liquid is controlled in percentage by weight, consists of sorting by powder to be selected and pure water
Feed liquid, the uniform feed liquid of dispersibility are transported to the device of grader with certain pressure, and Stress control is in 0.03MPa.
Heater and cooler device is also equipped with batch mixing tower, it is ensured that the stable in physicochemical property of material, batch mixing tower has to be protected
Hold the stable function of feed temperature.
The automatic program control system includes the converter of the frequency conversion motor rotating speed for controlling batch mixing top of tower, control classification
Rotary drum in the converter of the motor speed on machine fuselage, head part and in grader fuselage rotates the temperature in cavity
Sensor control and drum speed sensor and lead back control circuit composition；Turning by above-mentioned converter stepless regulating motor
Speed, when automatic program control system arranges the rotating speed that need, time relay setting operating by converter according to technological requirement
Between, and seperator operating condition is detected by the temperature on level machine, velocity sensor, if any abnormal sound light alarm simultaneously
Autostop.
The supernatant drip tray is used for reclaiming supernatant, rotates on cavity including the rotary drum in grader fuselage
Supernatant drip tray under seat, the supernatant drip tray that is fixed under supernatant drip tray on seat and clear supernatant drip tray phase
Cover in the supernatant drip tray of cooperation.
The upper end of rotary drum is connected by being driven lateral pin with the head spindle in head part.
A kind of ultra-fine diamond micro powder granule multi-level hierarchical method, it is characterised in that：Its concrete classification step is as follows：
Step 1）, according to the granularity requirements of material to be selected, by the ratio-dependent feedstock concentrations of material and water, concrete feed liquid
Concentration control percentage by weight be 0.5 40% scope, feed liquid is consisted of by powder to be selected and pure water, dispersibility is uniform
Feed liquid grader, Stress control 0.03MPa are transported to by batch mixing tower with certain pressure；
Step 2）, by adjusting the feed Valve controlling delivery rate on batch mixing tower, the granularity of material to be selected is less, it is desirable to
Delivery rate is lower, and the speed of feed is determined by the granularity of material to be selected；
Step 3）, motor on grader fuselage by belt, pinch roller by power pass to belt pulley on head and
Main shaft, so as to drive rotary drum to be rotated around own axes at a high speed, forms powerful centrifugal force field in drum inner wall, mixed in batch mixing tower
Feed liquid enter classification motor spindle feed nozzle inject feed liquid into the rotary drum inside grader, under powerful centrifugal action,
Feed liquid is forced to carry out hierarchical motion, the liquid of light weight is thrown to drip tray at rotary drum center flow to rotary drum upper end outlet and returns
Receive, the moderate solid of granule is got rid of on drum inner wall, this fraction solids is exactly required finished product material, more mixed than larger granule
Close thick material liquid outlet of the liquid from the rotatory drum wall of rotary drum lower end to be thrown out of, by body cavity bottom feedback outlet stream to material containing box,
Backflow feed liquid in material containing box is re-fed into batch mixing tower by circulating pump, reciprocation cycle, until by the finished product material part in all feed liquids
Till being totally separated out；
Step 4）, control rotary drum rotating speed by adjusting the frequency conversion motor rotating speed of grader, the granularity of material to be selected is less,
Ask rotary drum rotating speed higher, rotary drum rotating speed is determined by the granularity of material to be selected；To obtain varigrained material, by controlling rotary drum
Rotating speed reach control its centrifugal force size purpose so that thickness material is separated, the range of speed control：1000—20000
Rev/min, the grader duration of runs is confirmed according to grading effect, with finished product in particle size analyzer detection material in grader operation process
The content of material, less than 5%, you can stop classification work.
The present invention has following good effect：
1）The present invention compensate for that domestic ultra-fine diamond powder size grading range is wide and micropowder in exist it is oarse-grained
Deficiency, perfect current ultra-fine diamond micro powder product structure, improves classification efficiency, is that domestic initiation is surpassed with the equipment
Fine diamond powder size is classified.
2）Equipment proposed by the present invention and technique are also equipped with all to other in addition to possessing sorting ultra-fine diamond micropowder performance
Such as the grading performance of the superfine particulate matter such as dyestuff, magnetic material, carborundum, can form the prospect of being widely applied.
The present invention has following technical parameter：
1) rotary drum volume：6 liters；
2) rotary drum rotating speed：1000 16000 revs/min；
3) rotary drum internal diameter：105mm；
4) maximum centrifugal force：15050 R.C.F；
5) grader power of motor：3kw；
6) maximum water passing capacity：1200L/H；
7) batch mixing tower volume：160 liters；
Advantage compared with prior art：
1）Take up room little；
2）Production efficiency is high
3）Partition size narrow range, overproof granule number are few.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the structural representation of the grader of the present invention.
Fig. 3 is the structural representation of the rotary drum part of the grader of the present invention.
Fig. 4 is the structural representation of the batch mixing tower of the present invention.
Specific embodiment
As shown in figure 1, a kind of ultra-fine diamond micro powder granule multi-stage classifier disclosed by the invention is by batch mixing tower 2, classification
Machine 1, circulating device 3 and four part of automatic program control system combine,
The height of batch mixing tower 2 is arranged on 3 meters, for providing supply pressure 0.03MPa of feed liquid in batch mixing tower, in batch mixing tower
In be provided with the agitating device for preventing feed liquid from reuniting, the agitating device includes the changed mixing speed installed in batch mixing top of tower
Frequency conversion motor 2-2 and the feed liquid in batch mixing tower is stirred in batch mixing tower being connected with frequency conversion motor 2-2
Scattered rustless steel stirring paddle；Discharging opening is offered and by discharge opening pipeline 2-4 and classification motor spindle in batch mixing tower bottom
Feed nozzle 1-16 is connected, and high-precision manual control valve is provided with discharge opening pipeline 2-4, and the valve is to entering grader
Feed liquid flow implement be precisely controlled, offer charging aperture 2-1 on batch mixing tower top, charging aperture 2-1 pass through feed back pipeline 3-3
It is connected with material containing box 3-1, is responsible for accepting the feed liquid from material containing box 3-1；Batch mixing tower is by batch mixing tower tower body 2-3 and supports tower body
3 support 2-5 constitute；
As shown in Figure 2,3, grader is by frame, rack-mounted grader fuselage（Classification machine drum body）1-5, installation
Classification machine drum body outside controllable rotating speed batch mixing tower frequency conversion motor, installed in grader inner barrel by power transmission shaft with
Rotary drum and be arranged on grader fuselage that batch mixing tower frequency conversion motor is connected（Classification machine drum body）Internal temperature and velocity pick-up
Device is constituted, and the feed nozzle 1-16 of the rotary drum of connection batch mixing tower is provided with grader cylinder body bottom, the feed nozzle 1-16's of rotary drum
Charging aperture 1-2 is connected by discharge opening pipeline 2-4 with the discharging opening of batch mixing tower bottom.Installed in the rotary drum of grader inner barrel
Supernatant drip tray 1-1 is connected with material containing box 3-1 by material containing box supernatant feed pipe 1-6.
Grader includes that head part 1-3, the inside with fuselage door 1-7 are that rotary drum rotates the fuselage 1-5 of cavity, passes through
Fuselage door 1-7 is arranged on rotary drum and rotates rotary drum part 1-8, the electric-motor drive part 1- on fuselage 1-5 in cavity
9, rotary drum part 1-8 are the internal rotary drum for feed liquid cavity, offer supernatant outlet 1-14 on rotary drum top, and bottom offers
Thick material liquid outlet 1-15, bottom central part is the feed nozzle 1-16 for being opened in bottom of the drum, head part 1-3 include head,
Head spindle 1-10 on head and the protective cover on head, electric-motor drive part 1-9 include installing
The belt pulley on grader frequency conversion motor and grader frequency conversion motor output shaft on fuselage, head spindle 1-10 pass through machine
Belt pulley and grader variable-frequency electric on head spindle pulley, belt 1-11, pinch roller 1-12, grader frequency conversion motor output shaft
Machine is connected, and the upper end 1-12 of rotary drum is connected with the head spindle 1-10 in head part, and the lower end of rotary drum is arranged on rotary drum
Rotate in the sliding bearing 1-13 of cavity bottom.Supernatant outlet 1-14 on the rotary drum top in cavity is rotated in the rotary drum of fuselage
Lower position, is provided with supernatant drip tray 1-1 along rotary drum surrounding；During installation, the lower end of rotary drum is inserted into sliding bearing 1-13
In, the upper end 1-12 of rotary drum is square spigot, be may be inserted in the interior square groove of head spindle 1-10, with the head master in head part
Axle 1-10 links together, and rotates under the drive of head spindle 1-10.Fuselage door 1-7 is opened when taking out rotary drum, from sliding axle
Rotary drum is taken out in holding 1-13 and in the interior square groove of head spindle 1-10.
Circulating device 3 includes that the circulating pump 3-2 that material containing box 3-1 and material containing box 3-1 are connected, circulating pump 3-2 are arranged on and carries
Magazine top, and be inserted in material containing box 3-1 by circulating pump feed pipe and be connected with the material containing box, circulating pump 3-2 passes through back
The charging aperture 2-1 that pipe material 3-3 and batch mixing tower top open up is connected with batch mixing tower 2, and batch mixing tower 2 is responsible for accepting from material containing box
The feed liquid of 3-1；Material containing box charging aperture is offered on material containing box 3-1, material containing box 3-1 passes through the material containing box charging aperture and material containing box
Feed pipe is connected with the thick material liquid outlet 1-15 of the rotary drum of grader, and material containing box 3-1 is also fed by the material containing box supernatant
Mouth and material containing box supernatant feed pipe 1-6 are connected with the discharging opening of supernatant drip tray 1-1 of the rotary drum of grader, material containing box
3-1 is reclaimed from grader feed liquid to be selected and is transmitted back to batch mixing tower 2 by circulating pump 3-2.
Batch mixing tower the whole body be stainless steel, by 3 root posts support, for feed liquid is sufficiently stirred for so that feed liquid with
Discrete form enters into grader, expects that tower height degree determines the constant of material pressure, and discharge valve ensures that material enters grader stream
The stability of amount.
It is 0.5 40% scope that the concentration of feed liquid is controlled in percentage by weight, consists of sorting by powder to be selected and pure water
Feed liquid, the uniform feed liquid of dispersibility are transported to the device of grader with certain pressure, and Stress control is in 0.03MPa.
The automatic program control system includes the converter of the batch mixing tower frequency conversion motor rotating speed for controlling batch mixing top of tower, control
Rotary drum in the converter of the grader frequency conversion motor rotating speed on grader fuselage processed, head part and in grader fuselage turns
Temperature sensor control and drum speed sensor in dynamic cavity and lead back control circuit composition；It is electrodeless by above-mentioned converter
The rotating speed of regulation and control motor, automatic program control system arrange the rotating speed that need, time relay by converter according to technological requirement
Device arranges the duration of runs, and detects seperator operating condition by the temperature on level machine, velocity sensor, if any exception
Sound light alarm autostop.
The supernatant drip tray is used for reclaiming supernatant, rotates on cavity including the rotary drum in grader fuselage
Supernatant drip tray under seat, the supernatant drip tray that is fixed under supernatant drip tray on seat and clear supernatant drip tray phase
Cover in the supernatant drip tray of cooperation.The upper end of rotary drum is connected by being driven lateral pin with the head spindle in head part.
As shown in figure 4, a kind of batch mixing tower 2 of diadust particle multistage grader disclosed by the invention includes batch mixing tower
Tower body 2-3, the support 2-5 being arranged on below tower body, the agitating device for preventing feed liquid reunion being arranged in batch mixing tower tower body, peace
It is mounted in the frequency conversion motor 2-2 being connected with the agitating device in batch mixing tower tower body by rotary shaft on batch mixing tower top, is opened in
Batch mixing tower bottom by discharge pipe 2-4 and the grader discharging opening being connected and the charging aperture 2-1 for being opened in batch mixing tower top,
The agitating device is a kind of heated and stirred oar 2-6, and the heated and stirred oar 2-6 is a kind of steel stirring paddle of hollow, at this
Resistive heater 2-7 is provided with hollow, velocity sensor 2-8 is installed on heated and stirred oar surface；The batch mixing tower tower
As interlayer tower body, the interlayer cavity 2-9 of interlayer tower body is imported and exported 2-15 by cooling medium and is connected with outside chiller,
Cooling medium is full of in the interlayer cavity of the interlayer tower body；Charge door 2-16 is further opened with batch mixing tower, is responsible for batch mixing
Add raw material and pure water in tower；Temperature sensor 2-10 and pressure transducer 2-11 is installed on batch mixing inner wall of tower；Mixed
Material tower top is provided with relief valve 2-12, is provided with electromagnetic flow valve 2-13, the valve on the discharge pipe below discharging opening
Feed liquid flow into grader is implemented to be precisely controlled, the charging aperture is connected with material containing box by feed back pipeline, be responsible for
Accept the feed liquid from material containing box.
The above-mentioned heater and cooler device installed in batch mixing tower, it is ensured that the stable in physicochemical property of material, batch mixing tower have
The function of keeping feed temperature stable.
The height of batch mixing tower is arranged between 3-5 rice, for providing the supply pressure of feed liquid in batch mixing tower.Batch mixing tower the whole body
For stainless steel, it is support by 3 root post supports.One layer of foam heat-insulation layer 2- is enclosed with also in the outermost of batch mixing tower tower body
14.In batch mixing tower tower body, three layers of point upper, middle and lower is provided with heated and stirred oar, middle heated and stirred oar on the rotating shaft and adds down
Thermal agitation oar.
A kind of ultra-fine diamond micro powder granule multi-level hierarchical method, it is characterised in that：Its concrete classification step is as follows：
Step 1）, according to the granularity requirements of material to be selected, by the ratio-dependent feedstock concentrations of material and water, concrete feed liquid
Concentration control percentage by weight be 0.5 40% scope, feed liquid is consisted of by powder to be selected and pure water, dispersibility is uniform
Feed liquid grader, Stress control 0.03MPa are transported to by batch mixing tower with certain pressure；
Step 2）, by adjusting the feed Valve controlling delivery rate on batch mixing tower, the granularity of material to be selected is less, it is desirable to
Delivery rate is lower, and the speed of feed is determined by the granularity of material to be selected；
Step 3）, motor on grader fuselage by belt, pinch roller by power pass to belt pulley on head and
Main shaft, so as to drive rotary drum to be rotated around own axes at a high speed, forms powerful centrifugal force field in drum inner wall, mixed in batch mixing tower
Feed liquid enter classification motor spindle feed nozzle inject feed liquid into the rotary drum inside grader, under powerful centrifugal action,
Feed liquid is forced to carry out hierarchical motion, the liquid of light weight is thrown to drip tray at rotary drum center flow to rotary drum upper end outlet and returns
Receive, the moderate solid of granule is got rid of on drum inner wall, this fraction solids is exactly required finished product material, more mixed than larger granule
Close thick material liquid outlet of the liquid from the rotatory drum wall of rotary drum lower end to be thrown out of, by body cavity bottom feedback outlet stream to material containing box,
Backflow feed liquid in material containing box is re-fed into batch mixing tower by circulating pump, reciprocation cycle, until by the finished product material part in all feed liquids
Till being totally separated out；
Step 4）, control rotary drum rotating speed by adjusting the frequency conversion motor rotating speed of grader, the granularity of material to be selected is less,
Ask rotary drum rotating speed higher, rotary drum rotating speed is determined by the granularity of material to be selected；To obtain varigrained material, by controlling rotary drum
Rotating speed reach control its centrifugal force size purpose so that thickness material is separated, the range of speed control：1000—20000
Rev/min, the grader duration of runs is confirmed according to grading effect, with finished product in particle size analyzer detection material in grader operation process
The content of material, less than 5%, you can stop classification work.
Specific work process is as follows：
Grader frequency conversion motor is passed to belt pulley and main shaft on head by power by belt, pinch roller, so as to drive
Rotary drum is rotated around own axes at a high speed, forms powerful centrifugal force field in drum inner wall.In batch mixing tower, mixed feed liquid is by pipe
Road, the feed nozzle entrance into classification motor spindle inject feed liquid into the rotary drum inside grader, in powerful centrifugal action
Under, force feed liquid to carry out hierarchical motion.The liquid of light weight is flow at rotary drum upper end outlet and is thrown to hydrops at rotary drum center
Disk is reclaimed, and the moderate solid of granule is got rid of on drum inner wall, and this fraction solids is exactly required finished product material.Than larger
Grain mixes thick material liquid outlet 1-15 of the liquid from the rotatory drum wall of rotary drum lower end and is thrown out of, by body cavity bottom feedback outlet stream to
In material containing box 3-1.Backflow feed liquid in material containing box 3-1 is re-fed into batch mixing tower 2 by circulating pump, reciprocation cycle, until by all material
Till finished product material part in liquid is totally separated out.
Claims (7)
1. a kind of ultra-fine diamond micro powder granule multi-stage classifier, by batch mixing tower, grader, circulating device and automatic program control
Four part of system combines, it is characterised in that：
A, the height of batch mixing tower are arranged on 3 meters, for providing supply pressure 0.03MPa of feed liquid in batch mixing tower, in batch mixing tower
The agitating device for preventing feed liquid from reuniting is provided with, the agitating device includes the changed mixing speed installed in batch mixing top of tower
Batch mixing tower frequency conversion motor and the feed liquid in batch mixing tower is carried out in batch mixing tower being connected with batch mixing tower frequency conversion motor
The rustless steel stirring paddle of dispersed with stirring；Discharging opening is offered and by discharge opening pipeline and the rotary drum of grader in batch mixing tower bottom
The feed nozzle of bottom is connected, and high-precision manual control valve is provided with discharge opening pipeline, and the valve is to entering grader
Feed liquid flow implement to be precisely controlled, offer charging aperture on batch mixing tower top, the charging aperture is by feed back pipeline and material containing box
It is connected, is responsible for accepting the feed liquid from material containing box；
B, grader include that head part, the inside with fuselage door are that rotary drum is rotated the fuselage of cavity, installed by fuselage door
Rotate rotary drum part in cavity, the electric-motor drive part on fuselage in rotary drum, rotary drum part for it is internal be feed liquid
The rotary drum of cavity, offers supernatant outlet on rotary drum top, and bottom offers thick material liquid outlet, and bottom central part is to open up
In the feed nozzle of the bottom of the drum of grader, head part includes head, the head spindle on head and is arranged on
Protective cover on head, electric-motor drive part include grader frequency conversion motor and grader variable-frequency electric on fuselage
Belt pulley on machine output shaft, head spindle is by head spindle belt pulley, belt, pinch roller, the output of grader frequency conversion motor
Belt pulley on axle is connected with grader frequency conversion motor, and the upper end of rotary drum is connected with the head spindle in head part, is turned
Bulging lower end is arranged in the sliding bearing that rotary drum rotates cavity bottom, rotates the rotary drum top in cavity in the rotary drum of fuselage
Supernatant outlet lower position, is provided with supernatant drip tray along rotary drum surrounding；
C, circulating device include the circulating pump that material containing box and material containing box are connected, and circulating pump is arranged on material containing box top, and passes through
Circulating pump feed pipe is connected with the material containing box in being inserted into material containing box, and circulating pump is opened up by feed back pipeline and batch mixing tower top
Charging aperture be connected with batch mixing tower, batch mixing tower be responsible for accept from material containing box feed liquid；Material containing box is offered on material containing box
Charging aperture, material containing box are connected with the thick material liquid outlet of the rotary drum of grader by the material containing box charging aperture and material containing box feed pipe
Logical, material containing box also passes through the supernatant of the material containing box supernatant charging aperture and material containing box supernatant feed pipe and the rotary drum of grader
The discharging opening of drip tray is connected, and material containing box is reclaimed from grader feed liquid to be selected and is transmitted back to batch mixing tower by circulating pump.
2. ultra-fine diamond micro powder granule multi-stage classifier according to claim 1, it is characterised in that：
Described batch mixing tower the whole body is stainless steel, for feed liquid being sufficiently stirred for so that feed liquid is entered in a dispersed form
To grader, expect that tower height degree determines the constant of material pressure, high-precision manual control valve ensures that material enters grader flow
Stability；The agitating device is a kind of heated and stirred oar, and the heated and stirred oar is a kind of rustless steel stirring paddle of hollow,
Resistive heater is provided with the hollow, velocity sensor is installed on heated and stirred oar surface；The batch mixing tower tower body
For interlayer tower body, the interlayer cavity of interlayer tower body is imported and exported by cooling medium and is connected with outside chiller, in the interlayer
Cooling medium is full of in the interlayer cavity of tower body；Charge door is further opened with batch mixing tower, is responsible for adding raw material in batch mixing tower
And pure water；Temperature sensor and pressure transducer are installed on batch mixing inner wall of tower；Relief valve is installed on batch mixing tower top,
Electromagnetic flow valve is installed on the discharge pipe below discharging opening, the valve implements accurate to the feed liquid flow into grader
Control, the charging aperture are connected with material containing box by feed back pipeline, are responsible for accepting the feed liquid from material containing box.
3. ultra-fine diamond micro powder granule multi-stage classifier according to claim 1, it is characterised in that：The concentration control of feed liquid
System is 0.5 40% scope in percentage by weight, consists of sorting feed liquid by powder to be selected and pure water, and dispersibility is uniformly expected
Liquid is transported to grader with certain pressure, and Stress control is in 0.03MPa.
4. ultra-fine diamond micro powder granule multi-stage classifier according to claim 1, it is characterised in that：The auto-programming
Control system is by the motor speed on the converter of the frequency conversion motor rotating speed that controls batch mixing top of tower, control grader fuselage
Temperature sensor and drum speed sensor in converter, head part,
Rotary drum in grader fuselage rotates the temperature sensor in cavity and drum speed sensor and leads back control circuit
Constitute；By the rotating speed of the stepless regulated motor of above-mentioned converter, automatic program control system passes through converter according to technological requirement
Rotating speed, the time relay setting duration of runs for needing is set, and by the temperature on grader, velocity sensor inspection
Grader operating condition is surveyed, if any abnormal sound light alarm and autostop.
5. ultra-fine diamond micro powder granule multi-stage classifier according to claim 1, it is characterised in that：The supernatant product
Liquid disk be used for reclaim supernatant, including in grader fuselage rotary drum rotate cavity on supernatant drip tray under seat,
In the supernatant drip tray that the supernatant drip tray being fixed under supernatant drip tray on seat is engaged with supernatant drip tray
Lid.
6. ultra-fine diamond micro powder granule multi-stage classifier according to claim 1, it is characterised in that：The upper end of rotary drum with
Head spindle in head part is connected by being driven lateral pin.
7. a kind of ultra-fine diamond micro powder granule multi-level hierarchical method, it is characterised in that：Its concrete classification step is as follows：
Step 1）, according to the granularity requirements of material to be selected, by the ratio-dependent feedstock concentrations of material and water, concrete feed liquid it is dense
It is 0.5 40% scope that degree is controlled in percentage by weight, consists of feed liquid by powder to be selected and pure water, and dispersibility is uniformly expected
Liquid is transported to grader, Stress control 0.03MPa by batch mixing tower with certain pressure；
Step 2）, by adjusting the feed Valve controlling delivery rate on batch mixing tower, the granularity of material to be selected is less, it is desirable to be fed
Speed is lower, and the speed of feed is determined by the granularity of material to be selected；
Step 3）, the motor on grader fuselage power is passed to belt pulley and main shaft on head by belt, pinch roller,
So as to drive rotary drum to be rotated around own axes at a high speed, powerful centrifugal force field is formed in drum inner wall, mixed material in batch mixing tower
Liquid enters classification motor spindle feed nozzle and injects feed liquid into the rotary drum inside grader, under powerful centrifugal action, forces
Feed liquid carries out hierarchical motion, and the liquid of light weight is thrown to drip tray recovery at rotary drum center flow to rotary drum upper end outlet,
The moderate solid of granule is got rid of on drum inner wall, and this fraction solids is exactly required finished product material, is mixed than larger granule
Thick material liquid outlet of the liquid from the rotatory drum wall of rotary drum lower end to be thrown out of, by body cavity bottom feedback outlet stream to material containing box, follow
Backflow feed liquid in material containing box is re-fed into batch mixing tower by ring pump, reciprocation cycle, until will be the finished product material part in all feed liquids complete
Till part separates out；
Step 4）, control rotary drum rotating speed by adjusting the frequency conversion motor rotating speed of grader, the granularity of material to be selected is less, it is desirable to turn
Drum rotating speed is higher, and rotary drum rotating speed is determined by the granularity of material to be selected；To obtain varigrained material, by controlling turning for rotary drum
Speed reaches the purpose for controlling its centrifugal force size so that thickness material is separated, the range of speed control：1000 20000 turns/
Point, the grader duration of runs is confirmed according to grading effect, with finished product material in particle size analyzer detection material in grader operation process
Content, less than 5%, you can stop classification work.
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| CN111175185B (en) * | 2019-12-31 | 2021-11-16 | 同济大学 | Centrifuge test fluid injection device |
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| US8506919B2 (en) * | 2005-01-11 | 2013-08-13 | Hiroshi Ishizuka | Fine powder of single crystalline diamond particles and a method for the production thereof |
| US7628749B2 (en) * | 2005-09-01 | 2009-12-08 | Wagner Development Inc. | Solids recovery using cross-flow microfilter and automatic piston discharge centrifuge |
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Effective date of registration: 20180514 Address after: 130000 Mingxi Road, Beihu science and Technology Development Zone, Changchun, Jilin, China, Jilin No. 1759 photoelectron industry incubator C201-8 Patentee after: CHANGCHUN AERMASI SCIENCE & TECHNOLOGY CO., LTD. Address before: No. 1108, 34 floor, Xili, Haidian District, Beijing, Beijing Patentee before: Peng Jianguo |