CN1004790B - Centrifugal-type automatic granulating method and its apparatus - Google Patents
Centrifugal-type automatic granulating method and its apparatus Download PDFInfo
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- CN1004790B CN1004790B CN87106561.4A CN87106561A CN1004790B CN 1004790 B CN1004790 B CN 1004790B CN 87106561 A CN87106561 A CN 87106561A CN 1004790 B CN1004790 B CN 1004790B
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Abstract
The present invention belongs to a centrifugal type automatic granulating method and a special granulating apparatus thereof. The method is carried out according to the requirement of the theoretical formula of the centrifuge granulating science. Therefore, the range of granulating size is large, and is generally from 0.1 to 22 millimeters. The method can be used for making a finished product spherulite with good true sphericity (generally more than 0.9) and high qualified rate; moreover, no cooker scar or lump or granule is glued on a stator wall in a granulating cavity. The present invention has the advantage of good universality and can be used for making patterns and granules, and coating; the special granulating apparatus is automatic or manual. The apparatus has a simple automatic control apparatus. A single-board computer is additionally arranged only on the existing manual granulator.
Description
The invention belongs to centrifugal-type automatic granulating method.
Pelletize is a generalized concept, and it comprises three kinds of different implications such as making mother, pelletize and spherolite coating.What is called is made mother, refer to the pulverulent material of some add roll in the Granulation Equipments after, thereby spray the process that some atomization slurries obtain the higher spherical master batch of the proper sphere degree ratio of major axis (minor axis of ball with).The size of master batch is less, is generally 0.1～0.5 millimeter.The manufacturing of Chinese medicine electuary just can utilize this method, so-called pelletize, refer to the diameter of some be the master batch of d add roll in the facility for granulating after, to the powder of supplying with some on the master batch surface and spray some atomization slurries, (diameter is the process of spheroidal particle D, that the proper sphere degree is very high thereby make master batch roll bigger and bigger to reach preliminary dimension.The size range of pelletize is generally 0.3～22 millimeter.The manufacturing of the LIUSHEN WAN and the various Chinese medicine watered pills just can utilize this way.So-called spherolite coating refers to after rolling in the shape product spherolite of the some adding pelletize design, sprays a small amount of atomization slurry on pellet surface, thereby form the process of thin film on pellet surface.The thickness of thin film generally is about 0.005～0.05 millimeter.The coating of Chinese medicine pill just can utilize this way.
The centrifuge of being made up of stator 1 and rotor 2 the existing centrifugal-type automatic granulating equipment (as U.S. Pat 4034126), aerator 3, whitewashing system 5, powder-supply system 4 and automatically controlled 7 etc. partly form (see figure 1).
In granulation process, the parameter that influences pelletize quality and pelletize qualification rate height has: the rotating speed of centrifuge, the blow rate required and blast temperature, serosity injection flow and confession powder speed etc.Wherein the injection flow of serosity and confession powder speed are topmost key parameters.How scientifically to control this two parameters, also lack theoretical property so far and instruct, each state is all also in the process of exploring the way forward.At present relatively more commonly used have two kinds of control methods.First method is manual prilling process, it leans on operator's working experience and operating technology entirely to the injection flow of the serosity in the granulation process and the control of confession powder speed, therefore it is of low quality to make ball, proper sphere degree relatively poor (being generally about 0.8), granule is bonded to agglomerate easily, and yield rate is lower.Another kind is an automatic granulating method, and the comparison typical structure that is adopted in U.S. Pat 4034126 is seen Fig. 1.It in the automatic granulating process to the control method for powder speed and serosity injection flow is: employing cyclelog 7, and by given in advance strengthening continuously and progressively for till the preset program end of powder speed in cyclelog 7 for the powder rate curve.Adopt detector 12 to measure the resistivity of particle flux (it represents the temperature of particle flux) simultaneously, it is compared by comparison circuit 9 and reference generator 8 reference resistance rate signal level curves given in advance, when the electrical signal levels of measuring surpasses baseline signal level, comparison circuit 9 just sends control impuls, open by signal detector 10 and cyclelog 7 control electromagnetic valves 6, spray serosity to particle flux; Otherwise when the signal level of measuring was lower than baseline signal level, comparison circuit just stopped to send control impuls, closes electromagnetic valve 6, stops to spray serosity.Utilizing the supply of this method control serosity can eliminate recurrent bulk material in the granulation process substantially sticks on the centrifuge stator wall or particle bond forms the shortcoming of agglomerate together, the proper sphere degree height (being about 0.9) of while finished product, and the quality uniformity, the pelletize time also is reduced to 1/2nd of conventional manual method required time.But this automatic granulating method also exists a basic defective, exactly the experience curve that has all still used the previous manual prilling process to be drawn at the reference resistance rate curve for powder rate curve and reference generator 8 of cyclelog.Therefore, this automatic granulating method has just brought following several shortcoming and problem inevitably:
1. versatility is poor.Because these two experience curves can only adapt to the specific standard size of certain medicine.When medicine kind or specification changed, these two experience curves were just no longer suitable.Pelletize diameter as U.S. Pat 4034126 only is applicable to below 1 millimeter.
2. technical functionality is single.It can only pelletize can not coating; Can only operate automatically can not manual operation, and therefore this method can not be used for the pelletize or the art for coating of R and D new varieties or new spec.
3. production security is poor.The probe 11a of the detector among the A of pelletize chamber is anodal, and the stator wall is a negative pole, is particle flux between positive pole and the negative pole, and therefore, the particle flow between positive and negative electrode produces static and spark probably.So this process can not be applied to the granulation process of flammable explosion hazard medicine.(as containing alcoholic content or all can not use this process in the whitewashing) for containing inflammable chemical substance in the powder
4. the complex structure of equipment, cost is higher-owing to used complex appts such as reference generator, comparison circuit, signal detector, cyclelog and resistivity detector in the equipment, the cost of self-con-tained unit is very high.
A purpose of patent of the present invention is fully to study on the basis of centrifuge pelletize principle, a kind of best automatic granulating method is provided, it controls granulation process according to theoretical formula, thereby highly versatile, both can be used for pelletize and coating, can be used for making mother again, both operable automaticallies, but manual operation again, and the scope of pelletize size is also bigger, d
Ball=(0.1～22) millimeter, for whitewashing and also unrestricted for the character of the material of powder, safety is good.
Another purpose of patent of the present invention provides a kind of said method that uses, can pelletize, coating can make mother again, and both operable automaticallies again can manually operated multifunctional centrifugal formula automatic granulating equipment.This equipment simple in structure, the cost of its self-con-tained unit is lower, is about 1/10 of same device.
Below we will be further detailed patent of the present invention in conjunction with following accompanying drawing.
Fig. 2 is the sketch map of the centrifugal Granulation Equipments of patent of the present invention, and it is by centrifuge 1, blower system 2, and whitewashing system 3, for powder machine 4, compressed air system 5, automatically controlled 6 and exhausting system 7 are formed.
Fig. 3 is the automatic granulating process chart of patent of the present invention.
Fig. 4 is for representing in the patent of the present invention that pelletize diameter D, feed amount q and feed are than ω and (t/T
2) between the relation theory curve.
We at first come simply to introduce the centrifuge pelletize principle of patent of the present invention institute foundation.(this principle is a recent achievement in research of the inventor, is about to publish with monograph).
From the geometry angle, so-called granulation process is actually the master batch size and is enlarged into the process of D from d, and its amplification is Ks=D/d.On the rotor in rotation, when importing a certain amount of master batch, because centrifugal force and frictional force, the shape granule that looses forms the particle flux of vortex gyration at once on the fillet surface of rotor and stator.On this particle flux surface, the purpose of whitewashing is the humidity that increases particle surface, improves the cohesive force to powder; Purpose for powder is to strengthen particle diameter, and prevents the particle bond in bulk; The purpose of air blast is to prevent that granule or powder from dropping from the annulus of centrifuge rotor outer rim, and suitably drying particulate flows simultaneously.In granulation process, as the whitewashing amount excessive then make easily particle adhesion on the stator wall and bond easily in bulk and as be difficult for being shaped for powder speed excessive then granule.Therefore, finding out the required whitewashing amount of pelletize theoretically and for the quantitative relation between the powder amount, and scientifically arrange whitewashing and technological process for powder properly, is the proper sphere degree that improves pelletize, the scope of application that enlarges centrifugal granulator and the key that improves qualification rate.By the research to centrifuge pelletize principle, we can draw following some brief conclusion to new automatic granulating method and equipment thereof:
1. in the overall process of pelletize, whitewashing and confession powder should be able to separate independent control, and its technological process should be divided into three phases: moistening master batch stage, master batch size amplification stage and polishing drying stage.
Phase I: moistening master batch.In this stage, certain whitewashing amount should be arranged, but do not need, so whitewashing motor M for powder
2Revolution n
jBe initial revolution n
jAnd for powder motor M
4Revolution n
Fo=O; Blast temperature is a room temperature; Wetting time is T
1, general about 0.5～2 minute.
Second stage: the master batch size is amplified.In this stage, whitewashing and confession powder all should change according to certain rule, and both are the function of amplification Ks and pelletize time t, i.e. n
j=f(K
s, t), n
f=ψ (k
s, t); Blast temperature is a room temperature, and the pelletize time is T
2
Phase III: polishing is dry.In this stage, master batch size d has been enlarged into K
sDoubly, so feed and whitewash and to stop, i.e. n
j=n
f=o.But should improve blast temperature to 30～40 ℃ this moment, and polishing drying time is T
1, be generally 0.5～2 minute.
Above-described whitewashing, the arrangement of the independent control of confession powder and the technological process of three phases can enlarge the versatility of centrifugal comminutor.It both can be used for making mother and pelletize, can carry out coating etc. to spherolite again.For example when making mother, can be powder as making female raw material.The input parameter of an at this moment automatically controlled middle single board computer is taken as n
j=n
Jo, n
f=o and T
1=T
1, T
2=O, T
3=O, then centrifuge is directly produced master batch d from powder; When making the spherolite of a certain specific dimensions, can be diameter the master batch input earlier of d, the input parameter of single board computer is taken as then: K
s, n
Jo, n
Fo, T
1, T
2, T
3, then centrifuge can be produced the spherolite that diameter is D; When spherolite is carried out coating, the desirable n of single board computer parameter
f=0, n
j=n
Jo, T
1=T
1, T
2=O, T
3=O can charge into low-pressure air in automatically controlled when comminutor being had the requiring of explosion prevention function, and motor M
1, M
2And M
3Changing fire-proof motor into gets final product.
In patent of the present invention, rely on single board computer (DBJ) control speed regulator KTS
1And KTS
2Can see Fig. 3 according to making mother, make the automatic realization of difference requirement moistening master batch, the amplification of master batch size of ball and coating and polishing exsiccant technological process.
2. should keep mixing ratio α=whitewashing flow q at master batch size amplification stage
j/ for powder speed q
fBe constant.We know, any medicine all has an optimum mixture ratio α, if in granulation process, can remain this mixing ratio, the granule in bulk phenomenon that neither can bond then, can make granule successfully form sphere again, be to improve first key of making the ball quality and making the ball qualification rate so keep mixing ratio α constant.In patent of the present invention, rely on single board computer DBJ control adjustor FTS
1And KTS
2, make whitewashing flow q
jWith confession powder speed q
rBetween quantitative relation, remaining mixing ratio α is definite value.
3. should keep feed than ω=particle volume growth rate/granule surface area=(dv/dt)/S=((K at master batch size amplification stage
s-1)/2) d/T
2Be constant.Because, on the rotating particle flux of eddy current surface, during with mixing ratio α=whitewashing with for powder, the probability equalization of each granule contact serosity and powder, each particulate size increasing law is also identical, but the particle size increasing law can be diversified.Result of study to centrifuge pelletize principle shows in this case: whitewashing flow q
jWith confession powder speed q
fVariation, should keep ω constant, the growth rate dD/dt that just can make particle diameter is a constant.This so-called constant speed feed method is best a kind of in all feed methods, and its major advantage is:
(1) sphere diameter D promptly works as the master batch diameter and gets d, in the pelletize time T with the linear change (see figure 4)
2Require to amplify K
sTimes the time, the particle diameter D of a certain any time t is:
D＝d〔1+（K
s-1）t/T
2〕 （1）
Therefore, by predetermined T
2Time in time shuts down, and just can control the size of D with comparalive ease, because this characteristics are arranged, the present invention can be with input parameter T when making the spherolite of same breed different size specification
2Needs by the full-size specification are determined.Thereby the spherolite of all other reduced size specifications can be by the corresponding spherolite that obtains various different size specifications in advance of discharging time, thereby can significantly save the operating time.
(2) feeding rate q(comprises for powder speed q
5And hydrojet flow q
j) be parabola and change (see figure 4).Promptly working as initial feeding speed is q
0, at T
2When requiring particle diameter to amplify Ks times in the time, the feeding rate q of a certain any time t is: q=q
0(1+(Ks-1) t/T
2)
2This feed method is amassed any moment feeding rate and pellet surface and is directly proportional, thereby can guarantee to eliminate substantially powder bonding and agglomerate, obtains the highest qualification rate.
When (3) ω is definite value, the pelletize time T
2With existing proportional relationship between the master batch diameter d, i.e. T
2Can change by the size of d,, and when d reduces, can shorten the pelletize time T so this method can adapt to bigger pelletize size range
2
In the present invention, realize constant speed feed method, must be decomposed into whitewashing flow q to feeding speed q in order to make single board computer DBJ
jWith confession powder speed q
f, and then they are converted to spray pump motor M
3Revolution n
jWith confession powder machine motor M
4Revolution n
f
Be q=q
j+ q
f
According to centrifuge pelletize principle, master batch input quantity G
m, the initial flow q that whitewashes
JoAnd primary pump motor revolution n
JoFor
In the following formula: G
oThe maximum pelletize amount of-centrifuge is determined by the pelletize design
The characterisitic parameter of tg Φ-spray pump
ρ
JoSerum density during this characteristic of-mensuration
ρ
jSerum density during-pelletize
In like manner, initially supply powder speed q
FoFor:
In the formula:
The characterisitic parameter of tg Φ-feed screw
ρ
FoPowder density during this characteristic of-mensuration
ρ
fPowder density during-pelletize
So spray pump motor M
3Revolution n
jFor:
For powder machine motor M
4Revolution n
fFor:
In patent of the present invention n
Jo, n
Fo, Ks, T
2All be taken as the input parameter of single board computer, and n
jAnd n
fThe output parameter of being used as single board computer, single board computer is controlled speed regulator KTS1 and KTS2 respectively with the potential pulse output signal, makes whitewashing flow q
jWith confession powder speed q
fAll the time remain unchanged according to α of the present invention and ω and require to change (see figure 4).
More than sketch the centrifuge pelletize principle of patent of the present invention, introduced the operation principle of the centrifugal-type automatic granulating method that can realize patent of the present invention and its special-purpose Granulation Equipments below in conjunction with accompanying drawing 2:
1. give input parameter Ks in the single board computer DBJ, n
Jo, n
FoAnd T
1, T
2, T
3
(1) determines master batch amplification Ks, T
1, T
2And T
3,
(2) find the optimum mixture ratio α of this kind product
(3) calculate master batch input quantity G by formula (2)
m
(4) Ks, α, T
2, G
mWhitewashing motor M is calculated in substitution (3), (4), (5), (6)
2Initial speed n
JoAnd for powder machine motor M
4Initial speed n
Fo
(5) the permutator ZH in automatically controlled the DKT is placed automated location.
(6) give input Ks, n in the single board computer DBJ
Jo, n
FoAnd T
1, T
2, T
3Etc. parameter.
2. start compressed air system 5, aerator 2 and exhausting system 7 respectively.At this moment, outside air Pa enters air blast chamber B through filter 2a, aerator 2b and heater 2c, flows into pelletize chamber A through the annulus of rotor 1b c again, and enters atmosphere from exhausting system 7.In addition, compressed air P
1Enter spray chamber 3d through air relief valve 5a, choke valve 5b and electromagnetic valve 5c, herein with slurry spraying.
3. start centrifuge motor M by automatically controlled
1, the revolution of rotor 1b is located at set-point by variable-frequency governor BBJ.
4. master batch (or powder) is poured in the A of pelletize chamber on the rotor rotated, this moment G
mThe kilogram master batch forms the particle flux of vortex gyration near the outer peripheral fillet surface of rotor 1b under centrifugal force and the effect of friction rotor power.
5. by automatically controlled DKT, start single board computer DBJ.Automatically open electromagnetic valve 3c this moment, and the spray pump revolution is in n
Jo, making flow is q
JoSerosity, through electromagnetic valve 3c and spray gun 3d, be ejected into the particle flux surface after being atomized, through T
1Behind the time moistening master batch, single board computer is promptly controlled speed regulator KTS1 and KTS2, makes spray pump motor M
3With confession powder machine motor M
4Revolution prosecutor journey (4) and (6) change, thereby make also linear in time increase of particle flux granule in the centrifuge.Through T
2After time, master batch d has amplified Ks doubly, and single board computer promptly sends and stops the feed signal, makes M
3And M
4Stop the rotation, and close electromagnetic valve 3c and 5c automatically, thereby stopped whitewashing and supplied powder.Meanwhile, single board computer starts warmer 2c, makes the air themperature in the B of air blast chamber be elevated to predetermined value.At this moment, particle flux continues rotation under no feed condition, makes pellet surface obtain polishing and dry.Through T
2After time, single board computer sends the discharging signal.Discharging opening 1e on this moment manual unlocking stator, then the centrifugal force of rotor 1b is all released centrifuge to the finished product spherolite from discharging opening 1e, and granulation process is so far finished.
In sum, the characteristics of the automatic granulating method of patent of the present invention and equipment are:
1. the maximum characteristics of patent of the present invention are: this automatic granulating Processes and apparatus is to carry out according to the requirement of centrifuge pelletize scientific principle opinion formula, promptly at master batch size amplification stage, and whitewashing flow q
jWith confession powder speed q
fVariation satisfy mixing ratio α all the time and feed is the requirement of constant than ω, thereby overcome the shapeless and caked defective that bonds common in the present automatic granulating method, can produce proper sphere degree good (generally can reach more than 0.9), spherolite that qualification rate is high.
2. this automatic granulating Processes and apparatus is in making the overall process of ball, can realize to whitewashing with for the independent control of powder by single board computer, and can realize the moistening master batch-three phases such as master batch size amplification-polishing drying of granulation process automatically, certainly, also can adopt computer or variable program controller to realize above process, this class also belongs to the scope of the invention.
3. the versatility of this automatic granulating method and equipment is good, and it can require and the difference of spherulite size specification is required to adjust single board computer input parameter Ks, n according to the different process of making mother, pelletize and coating
f, n
jAnd T
2Numerical value, thereby have pelletize, coating and make female complex art function, and the spherulite size scope of manufacturing is bigger, d=(0.1～22) millimeter, substantially exceeded at present the pelletize size range of automatic granulating technology (general d=0.1～1 millimeter) abroad.
4. this automatic granulating method and equipment can also manually be realized, only need place manual position to get final product the permutator ZH in automatically controlled.Therefore,, can draw α and ω with the manual methods test earlier, use the automated process pelletize then as the α of product and ω when being unknown.
The safety of this automatic granulating method and equipment good-since pelletize chamber A in no any electric elements, so take explosion precaution easily.
6. the self-con-tained unit of this automatic granulating method and equipment is simple, only sets up a single board computer on present manual comminutor to get final product, compare with the self-con-tained unit of external centrifugal granulator, cost only be its 1/10th.
7. the pelletize overall process required time of this automatic granulating method and equipment is about (1/4～1/2) of similar centrifuge automatic granulating required time.
Embodiment one,
For during the continuous white sugar square crystal of (0.45～0.8) millimeter packs centrifugal granulating equipment into shown in Figure 2, the disk diameter of this equipment is 360 millimeters with 0.6 kilogram diameter, and centrifuge speed is 250 rev/mins.
The single board computer input parameter is: K
s=1.5, n
Jo=60 rev/mins, n
Fo=552 rev/mins, T
1=2 minutes, T
2=60 minutes, T
3=1 minute.
For powder (50% cane sugar powder, 50% starch) consumption is 0.93 kilogram, is 0.39 kilogram for serosity (syrup of 50% water) consumption, and always importing the feed amount is 1.92 kilograms, and the general output of finished product spherolite is 1.85 kilograms.
The proper sphere degree of prepared finished product spherolite (D=0.6～1.2) is 0.94～0.96, and qualification rate is 96%, does not have pot scar, no agglomerate in the pelletize chamber, does not also have particle adhesion on centrifuge stator wall.
Embodiment two,
For during the master batch of (2～2.5) millimeter packs centrifugal granulating equipment into shown in Figure 2, the disk diameter of this equipment is 360 millimeters with 0.6 kilogram of diameter, and centrifuge speed is 150 rev/mins.
The single board computer input parameter is: K
s=1.5, n
Jo=60 rev/mins, n
Fo=552 rev/mins, T
1=2 minutes, T
2=67.5 minutes, T
3=2 minutes.
For powder (50% cane sugar powder, 50% starch) consumption is 0.92 kilogram, is 0.34 kilogram for serosity (syrup of 50% water) consumption, and the general output of always importing the feed amount and be 1.86 kilograms of finished product spherolites is 1.76 kilograms.
The proper sphere degree of prepared finished product spherolite (D=2～2.5) is that 0.95～0.98 qualification rate is 97%, does not have pot scar, no agglomerate among the A of pelletize chamber, does not also have particle adhesion on centrifuge stator wall.
Embodiment three,
For during the master batch of (3～3.5) millimeter packs centrifugal granulating equipment into shown in Figure 2, the disk diameter of this equipment is 360 millimeters with 0.8 kilogram of diameter, and centrifuge speed is 150 rev/mins.
The single board computer input parameter is: K
s=1.7, n
Jo=130 rev/mins, n
f=270 rev/mins, T
1=2 minutes, T
2=58 minutes, T
3=0.
For powder (50% cane sugar powder, 50% starch) consumption is 2.44 kilograms, is 0.97 kilogram for slurry (syrup of 50% water) consumption, and the general output of always importing the feed amount and be 4.21 kilograms of finished product spherolites is 4 kilograms.
The proper sphere degree of prepared finished product spherolite (D=5～6) is 0.96, and qualification rate 95% does not have the pot scar among the A of pelletize chamber, and no agglomerate does not have particle adhesion on the centrifuge stator yet.
Claims (29)
1, a kind of automatic granulating method that is used for centrifugal Granulation Equipments, this equipment is by centrifuge 1, blower system 2, whitewashing system 3, form for powder machine 4, compressed air system 5, automatically controlled 6 and exhausting system 7, it is characterized in that: a single board computer DBJ is set in automatically controlled DKT, it can be according to the different requirements of making mother, pelletize and coating, automatically exsiccant technological process is amplified-polished to realization moistening master batch-master batch size, and in whole granulation process, keeping optimum mixture ratio α and feed more constant automatically than ω, the growth that makes the spherolite diameter is for linear.This method comprises following each step:
A. give single board computer DBJ input six parameter K s, n
Jo, n
Fo, T
1, T
2And T
3, and the permutator ZH in automatically controlled the DKT placed automated location, wherein:
1. master batch amplification Ks=D/d(D is the pelletize diameter, and d is the master batch diameter)
2. master batch wetting time T
1=0.5～2 minutes
3. polish T drying time
3=0.5～2 minutes
4. T
2=
D/ ω ω is determined by the physical property of medicine
5. motor initial speed n whitewashes
JoDetermine by following formula:
Initial whitewashing flow
α is determined by the physical property of medicine
Master batch input quantity Gm=
, Go is the maximum pelletize amount of centrifuge
Tg Φ is the characterisitic parameter of spray pump
ρ
JoSerum density when measuring this characteristic
ρ
jSerum density during for pelletize
6. supply powder motor initial speed n
FoDetermine by following formula:
Initial for powder speed
Tg Φ is the characterisitic parameter of feed screw
ρ
FoPowder density when measuring this characteristic
ρ
fPowder density during for pelletize
B. start compressed air system 5, aerator 2 and exhausting system 7 respectively, at this moment, outside air Pa enters air blast chamber B through filter 2a, aerator 2b and heater 2c, flow into pelletize chamber A through the annulus of rotor 1b c again, and enter atmosphere from exhausting system 7, and in addition, compressed air P
1Enter spray chamber 3d through air relief valve 5a, choke valve 5b and electromagnetic valve 5c, herein with slurry spraying;
C. start centrifuge motor M by automatically controlled
1, the revolution of rotor 1b is located at set-point by variable-frequency governor BBJ;
D. master batch (or powder) is poured in the A of pelletize chamber on the rotor rotated, this moment Gm kilogram master batch under centrifugal force and the effect of friction rotor power, near the outer peripheral fillet surface of rotor 1b, form the particle flux of vortex gyration;
E. by automatically controlled DKT, start single board computer DBJ, this moment the electronic electromagnetic valve 3c that opens, the spray pump revolution is in n
Jo, making flow is q
JoSerosity, through electromagnetic valve 3c and spray gun 3d, be ejected into the particle flux surface after being atomized, through T
1Behind the time moistening master batch, single board computer is promptly controlled speed regulator KTS1 and KTS2, makes spray pump motor M
3With confession powder machine motor M
4Revolution is pressed equation n
j=n
Jo(1+(Ks-1) t/T
2)
2And n
f=n
Fo(1+(Ks-1) t/T
2)
2Change, the interior particle flux granule of centrifuge is also linear in time to be increased thereby make, and at the master batch amplification stage, single board computer can be controlled whitewashing flow q automatically
jAnd for powder speed q
fRatio, remain on the optimum mixture ratio α value of medicine, through T
2After time, master batch d has amplified Ks doubly, and single board computer promptly sends and stops the feed signal, makes M
3And M
4Stop the rotation, and close electromagnetic valve 3c and 5c automatically, thereby stopped whitewashing and supplied powder, meanwhile, single board computer starts warmer 2c, makes the air themperature in the B of air blast chamber be elevated to predetermined value, at this moment, particle flux continues rotation under no feed condition, make pellet surface obtain polishing and open dry, through T
3After time, single board computer sends the discharging signal, the discharging opening 1e on this moment manual unlocking stator, and then the centrifugal force of rotor 1b is all released centrifuge to the finished product spherolite from discharging opening 1e, and granulation process is so far finished.
2, the automatic granulating method of the centrifugal Granulation Equipments described in the claim 1 is characterized in that: after adding is of a size of the master batch of d in centrifuge rotor, change input parameter Ks, the n of single board computer DBJ
Jo, n
FoAnd T
1, T
2, T
3Just can produce the spherolite D of different size specification.
3, the automatic granulating method of the centrifugal Granulation Equipments described in the claim 1 is characterized in that: in centrifuge rotor with powder generation master batch, and get n in the input parameter of single board computer DBJ
j=n
Jo, n
f=o, T
1=T
2, T
2=O, T
3=O can produce the master batch d of certain size.
4, the automatic granulating method of centrifugal Granulation Equipments described in the claim 1 is characterized in that: in the input parameter of single board computer DBJ, get n
Jo=n
j, n
f=o, T
1=T
1, T
2=T
3=O, and in centrifuge rotor, replace master batch with the finished product spherolite, can carry out automatic coating work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87106561.4A CN1004790B (en) | 1987-09-30 | 1987-09-30 | Centrifugal-type automatic granulating method and its apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87106561.4A CN1004790B (en) | 1987-09-30 | 1987-09-30 | Centrifugal-type automatic granulating method and its apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87106561A CN87106561A (en) | 1988-08-31 |
| CN1004790B true CN1004790B (en) | 1989-07-19 |
Family
ID=4815756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87106561.4A Expired CN1004790B (en) | 1987-09-30 | 1987-09-30 | Centrifugal-type automatic granulating method and its apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1004790B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100342961C (en) * | 2003-02-12 | 2007-10-17 | 迪奥斯纳迪克斯和泽内有限公司 | Device for treating a particulate product and device for actuating said device |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102895917A (en) * | 2011-07-28 | 2013-01-30 | 淄博新空间陶瓷有限公司 | Dry granulating device |
| TWI571256B (en) * | 2014-11-10 | 2017-02-21 | 國立成功大學 | Spray granulation system with thermal isolation device |
| CN106213553A (en) * | 2016-09-29 | 2016-12-14 | 芜湖市三山区绿色食品产业协会 | A kind of comminutor for food processing and operational approach thereof |
| CN107051325A (en) * | 2017-01-24 | 2017-08-18 | 安国市聚药堂药业有限公司 | A kind of method being processed with centrifugal wet granulation seed-coating machine to powder |
| CN108568049B (en) * | 2018-06-15 | 2023-07-21 | 浙江高成绿能科技有限公司 | Processing equipment for amplifying and synthesizing decontaminating agent and processing technology thereof |
| CN110559952A (en) * | 2019-09-25 | 2019-12-13 | 宝钢磁业（江苏）有限公司 | Automatic pelletizing process of manganese-zinc ferrite |
-
1987
- 1987-09-30 CN CN87106561.4A patent/CN1004790B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100342961C (en) * | 2003-02-12 | 2007-10-17 | 迪奥斯纳迪克斯和泽内有限公司 | Device for treating a particulate product and device for actuating said device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN87106561A (en) | 1988-08-31 |
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