KR100889214B1 - Method and apparatus for nano particle - Google Patents

Abstract

A nano particle-manufacturing apparatus is provided to manufacture nano particle by using a pure and physical mode and to prevent entrainment of iron. A nano particle-manufacturing apparatus comprises a feed port(2) ejecting slurry in which powder is mixed, a grinding part(4) pulverizing the slurry by pressurizing of a plurality of rollers externally tangent, an accumulator tank(6) taking away the slurry pulverized in the grinding part, a centrifuge(8) centrifuging the slurry transferred from the accumulator tank and separating it into supernate and precipitate and a freezing dryer(9) freeze-drying the precipitate and obtaining solid powder.

Description

Nanoparticles manufacturing apparatus and method {METHOD AND APPARATUS FOR NANO PARTICLE}

The present invention relates to an apparatus and method for producing nanoparticles, and more particularly, to an apparatus and method for producing nanoparticles, which can be manufactured up to 10 nanometers or less to maintain molecular structure and properties by physical methods.

It is IT, BT, and NT that all the world's countries are pursuing constantly. These three fields are deeply correlated.

A single semiconductor in IT can store large amounts of data in a small volume, which is possible by nanotechnology.

BT also reveals the genes and breaks them down and finds the cause of the production and the cause of the change in the end to promote human health and disease-free lifespan, so that the main purpose of the discovery of necessary medicines is impossible without the backing of nanotechnology. Do.

As such, the field of use of nano will expand explosively, but first of all, paint, pharmaceutical, cosmetics, etc. are developing with the power of nano.

Nanoparticles have been applied to pigments used in paints and inks, flame retardants with adhesives added, insulation, electricity, and many special minerals used in color pigments and pharmaceuticals.

Conventionally, nano-particles are manufactured using a Laura mill, a ball mill or a high speed cut mill, a high pressure jet shock plate, a high voltage sputter, etc., but iron particles are mixed to obtain pure nanoparticles.

The present invention has been made to solve the above problems of the prior art, it is possible to manufacture nanoparticles using a pure physical method, in particular to provide a nanoparticle manufacturing apparatus and method to prevent the incorporation of iron Its purpose is to.

The object of the present invention described above,

A supply unit for discharging the turbid liquid mixed with powder; A pulverizing unit for pulverizing the turbid liquid by pressurization of a plurality of rollers circumscribed; A collection tank for collecting the turbid liquid pulverized in the crushing unit; A centrifuge for separating the turbid liquid transferred from the collection tank into water and a slurry; It is achieved by a nanoparticle manufacturing apparatus consisting of a lyophilizer to obtain the solid powder by lyophilizing the slurry.

 On the other hand, the object of the present invention,

1 step of pulverizing the turbid liquid mixed with the powder into a pulverizing device consisting of a roller; Centrifuging the pulverized turbid liquid at low speed to separate the primary supernatant and the primary precipitate; Centrifuging the primary supernatant at high speed to separate the secondary supernatant from the secondary precipitate; It is achieved by a nanoparticle manufacturing method consisting of four steps of the three steps of the secondary precipitate is freeze-dried and extracted into a powder form.

According to the present invention, it is possible to manufacture nanoparticles using a physical method, it is possible to prevent the incorporation of iron has the effect of producing a pure nanoparticles.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a nanoparticle manufacturing apparatus according to the present invention.

As shown in Figure 1, the nanoparticle manufacturing apparatus (A) according to the present invention,

A supply part 2 for discharging the turbid liquid mixed with the powder;

A crushing unit (4) for pulverizing the turbid liquid by pressurization of a plurality of rollers circumscribed;

A collection tank 6 for collecting the turbid liquid pulverized in the crushing unit 4;

A centrifuge 8 for centrifuging the turbid liquid transferred from the collection tank 6 into a supernatant and a precipitate;

Lyophilizer (9) to freeze-dried the precipitate to obtain a solid powder

It is made, including.

In the description of this embodiment, the powder of the turbidity is exemplified as a crystal, but not necessarily limited thereto, but it is understood that various minerals may be applicable.

Now, each of the above components will be described in more detail.

The supply unit 2 is composed of a hopper 22 for storing and discharging the turbid liquid mixed with the powder, and a stirrer 24 provided in the hopper 22.

The stirrer 24 is installed in the hopper 22 and has a conventional structure consisting of a shaft rod having a plurality of stirring wings and a motor for rotating the shaft rod.

2 and 3 are left and right side views showing the "grinding part" applied to the nanoparticle manufacturing apparatus according to the present invention.

As shown in Fig. 2 and 3, the grinding unit 4, the first and second rollers (51, 52) are externally rotated to rotate the first grinding device (5) and to crush the turbid liquid; It is installed in the lower portion of the first grinding device 5, the third and fourth rollers (73, 74) are externally rotated to rotate to re-pulverize the first crushed turbid liquid in the first grinding device (5) It is comprised by the 2nd grinding device 7.

Of course, in the present embodiment, only two grinding apparatus is installed as an example, it is not limited to this, it will be obvious that the number of the grinding apparatus can be installed more as needed.

The first grinding device 5 includes a first and second rollers 51 and 52 which are externally circumscribed, a first driving unit for rotating the first and second rollers 51 and 52, and the second roller. It is composed of a position adjusting member for adjusting the position of 52.

The first and second rollers 51 and 52 are horizontally installed in the box-shaped case 40, and the case 40 has an inlet for introducing and discharging the turbid liquid introduced from the supply part 2. 402 and outlet 404 are formed.

As shown in FIGS. 2 and 3, the first driving unit is configured to provide power for grinding the first and second rollers 51 and 52 by rotating in opposite directions, and the first and second rollers. First and second helical gears 511 and 522 installed on one shaft of the first and second shafts 51 and 52, a third helical gear 513 provided to the other shaft of the second roller 52, and the third A fourth helical gear 524 installed on the other shaft of the first roller 51 and a fifth helical gear 535 meshed with the fourth helical gear 524 to be engaged with the helical gear 513. It consists of a motor 53.

As described above, the main feature of the present invention is that the driving force is transmitted to the helical gear.

When the spur gear is used, it is not suitable for the purpose of the present invention for extracting the nanoparticles because microscopic lifting ends are generated at the moment when the teeth of the gear mesh with each other.

Therefore, the present invention allows the use of helical gears to prevent even fine lifting while the first and second rollers 51 and 52 are rotated.

In addition, the first and second rollers 51 and 52 may block the origin of iron by coating the outer surface of the zirconia ceramic that exceeds the cemented carbide to a thickness of 2 cm.

The first roller 51 and the second roller 52 has a different outer diameter to improve the grinding efficiency by the principle of grinding the mill.

Preferably, the first roller 51 uses an outer diameter of 50 mm, and the second roller 52 uses a 1/2 mm larger 52 mm.

The drive motor is suitably equipped with a three-horsepower reducer, by which the first grinding device is driven at low speed ten times per minute.

The position adjusting member is for adjusting the close interval with the first roller 51 by moving the second roller 52 in the vertical direction and the front, screwed to the case 40 and the tip of the second roller 52 is It consists of a vertical adjustment bolt 43 and a horizontal adjustment bolt 44 installed to contact the shaft of (52).

On the other hand, in order to obtain a more effective grinding force by operating the position adjusting member to close the first roller 51 and the second roller 52 in close contact with the first roller 51 and the second roller (about 5 to 8mm fine). 52 may be alternately arranged in an "X" shape.

The second grinding device 7 has the same structure as the first grinding device 5.

In this description, in order to avoid the confusion which overlaps with the said 1st grinding device 5, the different code | symbol is attached | subjected and the name was distinguished.

As shown in Fig. 2 and Fig. 3, the second grinding device 7 rotates the third and fourth rollers 73 and 74 and the third and fourth rollers 73 and 74 which are mutually circumscribed. The second driving unit and the position adjusting member for adjusting the position of the fourth roller (74).

The second driving part is provided on one axis of the third and fourth rollers (73, 74), and the sixth and seventh helical gears (735, 746) are engaged with each other, and the second shaft is provided on the other axis of the fourth roller (74) The helical gear 747, the ninth helical gear 738 installed on the other shaft of the third roller 73 to be engaged with the eighth helical gear 747, and the ninth helical gear 738 is engaged. The tenth helical gear 759 is constituted by a drive motor 75 built up.

Since each structure of the said 2nd grinding device 7 is the same as that of the said 1st grinding device 5, duplication description is abbreviate | omitted.

The third and fourth rollers 73 and 74 are coated with zirconia ceramics on the outer surface thereof.

Since the centrifuge 8 and the lyophilizer 9 are already known techniques, detailed description thereof will be omitted.

The operating relationship of the present invention configured as described above will be described with reference to FIG.

Figure 4 is a process flow diagram illustrating a nanoparticle manufacturing method according to the present invention.

4, the nanoparticle manufacturing method of the present invention,

1 step (S1) of putting the mixed turbid liquid mixed with the powder into a grinding device consisting of a roller;

Centrifuging the pulverized turbid liquid at low speed to separate the primary supernatant and the primary precipitate (S2);

Centrifuging the primary supernatant at high speed to separate the secondary supernatant into a secondary precipitate and a secondary precipitate (S3);

Fourth step (S4) of freezing-drying the secondary precipitate of the third step (S3) and extracting it into powder form

It consists of.

Each process will now be described in detail.

Step 1 (S1)

An appropriate amount of turbidity liquid is discharged from the supply portion and introduced into the first grinding device 5.

The first and second rollers 51 and 52 of the first grinding device 5 are rotated at a low speed of 10 times per minute in a state of being externally circumscribed, and the turbidity is fed in the meantime while the turbidity is pressed. Crushed.

At this time, since the first and second rollers 51 and 52 are slightly staggered and externally circulated, the turbid liquid is not easily released, and is gradually crushed to flow downward.

Lowering the rotational speed is such that the pressure received at the same point is actually doubled.

The turbid liquid firstly pulverized in the first pulverizer 5 is put into a second pulverizer 7 installed at the lower portion thereof, and is pulverized while going through the same grinding process.

2nd step (S2)

The crushed turbid liquid is collected in a centrifuge (8) and then centrifuged at a relatively low speed of 7000-9000 rpm to separate the primary supernatant and the primary precipitate.

The separated primary supernatant is collected, and the primary precipitate is transferred to the supply part 2 again to perform continuous grinding and centrifugation.

The separated primary supernatant contains about 10% 1-10 nanoparticles of quartz.

The primary precipitate is added to the same proportion as the initial water to be transferred to the supply unit, and is again performed about eight times to perform the grinding and centrifugation.

3 step (S3)

In the second step (S2), the first supernatant collected by low-speed centrifugation about 8 times was put into the centrifuge (8) again and the nanoparticles crushed by high-speed rotation at 17000-19000 rpm were separated into secondary precipitates. Collected, 1 to 2 nanoparticles that have lost their performance due to the destruction of molecules and 4 to 5 nanoparticles that do not rotate at high speed are discharged into the wastewater as water.

4 step (S4)

The collected 5-10 nanosecond precipitates are placed in a freeze-dryer (9), and the crystal fine particles in powder form are extracted by maintaining for 36 hours under a temperature of -50 ° C to -85 ° C and a pressure of 760 torr or more.

Therefore, physical grinding is performed from the initial start process to the end, and the powder is pulverized in a state of containing water, thereby obtaining a clean powder without loss of particles.

Thus, the crystal grains obtained by the present invention appear to be clear water at 30% of solid content. It dissolves well in water and any solvent.

In addition, the manufacturing apparatus of the present invention can be produced in large quantities, easy to clean it can change many kinds of materials and colors.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be readily apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, all such modifications and modifications being attached It is obvious that the claims belong to the claims.

1 is a view showing a nanoparticle manufacturing apparatus according to the present invention.

2 and 3 is a left side view and a right side view showing the "grinding part" applied to the nanoparticle manufacturing apparatus according to the present invention.

Figure 4 is a process flow diagram illustrating a nanoparticle manufacturing method according to the present invention.

Explanation of symbols on the main parts of the drawings

2 supply part 4 grinding part

5: ash 1 grinding apparatus 6: collection tank

7: second grinding device 8: centrifugal separator

9: lyophilizer 51: first roller

52: second roller 73: third roller

74: fourth roller 511: the first helical gear

522: second helical gear 513: third helical gear

524: 4th helical gear 535: 5th helical gear

746: 6th helical gear 747: 7th helical gear

738: 8th helical gear 759: 9th helical gear

Claims (10)

A supply part 2 for discharging the turbid liquid mixed with the powder; A pulverizing unit 4 for pulverizing the turbid liquid by pressurization of a plurality of rollers circumscribed; A collection tank 6 for collecting the turbid liquid pulverized in the crushing unit 4; A centrifuge 8 for centrifuging the turbid liquid transferred from the collection tank 6 to a supernatant and a precipitate; Lyophilizer (9) to freeze-dried the precipitate to obtain a solid powder Nanoparticles manufacturing apparatus comprising a. The method of claim 1, The grinding unit 4, A first grinding device (5) for grinding the turbid liquid while the first and second rollers (51, 52) are circumscribed and rotated; It is installed in the lower portion of the first grinding device 5, the third and fourth rollers (73, 74) are externally rotated to rotate to re-pulverize the first crushed turbid liquid in the first grinding device (5) Second grinding device (7) Nanoparticles manufacturing apparatus comprising a. The method of claim 2, The first pulverizing apparatus 5 includes a first and second rollers 51 and 52 which are horizontally installed in the case 40 so as to be circumscribed to each other and the first and second rollers 51 and 52 which rotate the first and second rollers 51 and 52. Nano-particle manufacturing apparatus comprising a drive unit, and a position adjusting member for adjusting the position of the second roller (52). The method of claim 3, wherein The first driving unit includes: first and second helical gears 511 and 522 installed on one shaft of the first and second rollers 51 and 52 and engaged with each other; A third helical gear 513 installed on the other shaft of the second roller 52; A fourth helical gear 524 installed on the other shaft of the first roller 51 so as to be engaged with the third helical gear 513; A driving motor 53 in which a fifth helical gear 535 fitted to the fourth helical gear 524 is arranged; Nanoparticles manufacturing apparatus comprising a. The method of claim 4, wherein The first and second rollers (51, 52) nanoparticle manufacturing apparatus characterized in that the zirconia ceramic is coated on the outer surface. The method of claim 2, The second grinding device 7 includes a third and fourth rollers 73 and 74 which are externally circumscribed, a second driving part for rotating the third and fourth rollers 73 and 74, and the fourth roller. Nanoparticles manufacturing apparatus, characterized in that consisting of a position adjusting member for adjusting the position of (74). The method of claim 6, The second driving unit, Sixth and seventh helical gears 735 and 746 installed on one shaft of the third and fourth rollers 73 and 74 and engaged with each other; An eighth helical gear 747 installed at the other shaft of the fourth roller 74; A ninth helical gear 738 installed on the other shaft of the third roller 73 so as to be engaged with the eighth helical gear 747; The driving motor 75 in which the tenth helical gear 759 fitted to the ninth helical gear 738 is arranged. Nanoparticles manufacturing apparatus comprising a. The method of claim 7, wherein The third and fourth rollers (73, 74) is a nanoparticle manufacturing apparatus characterized in that the zirconia ceramic is coated on the outer surface. 1 step (S1) of putting the mixed turbid liquid mixed with the powder into a grinding device consisting of a roller; Centrifuging the pulverized turbid liquid at low speed to separate the primary supernatant and the primary precipitate (S2); Centrifuging the primary supernatant at high speed to separate the secondary supernatant and the secondary precipitate (S3); Fourth step (S4) of freezing-drying the secondary precipitate of the third step (S3) and extracting it into powder form Nanoparticles manufacturing method comprising a. The method of claim 9, The second step (S2) is 7000 ~ 9000 rpm, the third step (S3) is a nanoparticle manufacturing method, characterized in that the centrifugation at 17000 ~ 19000 rpm.

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