KR20160027543A - Agitating apparatus having 3 blades without dead zone - Google Patents

Abstract

Provided is an agitating apparatus having three dead zone free blades, and thus having effects of: agitating a high-viscosity material in a speedy manner and mixing the material uniformly since there is no dead zone and the material therein is completely agitated; and exhibiting enhanced agitation efficiency by improving an agitating capacity as the diameter of each blade can be extended. To this end, an agitating apparatus has three blades mounted on three rotary shafts, which are arranged in a triangle shape, to be able to rotate individually. The agitating apparatus is designed in such a manner that rotary shafts are disposed to allow contour lines of rotation tracks of the three blades to be overlapped with each other to prevent the formation of a dead zone. Two blades of the three blades rotate toward the same direction, and the remaining one blade rotates toward the opposite direction. In the initial setting method of the three blades, the two blades moving toward the same direction have lower side members whose one side ends are arranged toward the overlapped area and disposed at an angle of 45° to both left and right sides in relation to the reference plane. The remaining blade moving toward the different direction has a lower side member arranged vertically with respect to the reference plane.

Description

[0001] The present invention relates to an agitating apparatus having three blades without dead zones,

The present invention relates to a method of dispersing, stirring, kneading, and kneading a material having a high viscosity (~ 300,000 cP) or a semi-solid slurry or paste material from the low viscosity of ink, paint, ceramic, pharmaceutical, food, In particular, the present invention relates to an agitating apparatus for three kneading apparatuses, in which three blades are revolved and rotated in an agitator (tank), and the structure, arrangement and driving method of these three blades are improved so as not to form a dead zone To an agitating device.

The stirring device is used for various kinds of paste manufacturing equipment and chemical raw materials such as inks, pigments, paints, cosmetics, medicines and paints, various coatings, abrasives, ceramics or metal powders or various electronic materials (PZT, dielectric, MLCC, Display material), and the like. Particularly, as a device for stirring a high viscosity material, a planetary mixer which stirs a high viscosity material in a container using a blade and a rotor is widely used as a stirring device .

The Planetary Mixer is a useful facility that is used only for mixing medium viscosity and high viscosity products. It has a relatively simple structure, is very easy to use, and can perform homogeneous mixing and defoaming operations at the same time, It is widely used in various fields such as electronic parts production. Planetary mixer can add vacuum design or explosion-proof function according to the purpose of use and it is designed in a simple structure of detachable structure, so that the structure of disassembling and assembling of impeller and tank is convenient. For example, in the ink manufacturing process, a planetary mixer is used to produce ink materials such as binders (oil varnish), additives such as thinner and wax, and colorants such as pigment.

The planetary mixer uses a rotating blade attached to the rotating shaft as a means for stirring the material, and the more complicated the trajectory is generated in the rotation of the blade, the better the efficiency. The general structure is that the blades are mounted on the rotating shaft in the tank to rotate and rotate the blades, and an impeller may be added if necessary. The number of blades in a planetary mixer is one to three, and as the number of blades increases, the blending trajectory of the blades becomes complicated, resulting in improved mixing.

 The mixing function of such a blade-driven agitator is influenced by the following factors.

The first is the rotation and revolution of the blade. As the blades are rotated and orbiting together, the blade trajectory becomes complicated and the blending function improves.

Second, the gap between the blades should be minimized. It is important to minimize the inter-blade gap (the area where no agitation occurs) called the dead zone by minimizing the distance between the blades without causing interference between the blades when the blades rotate and revolve.

The third is the shape of the blade to increase the stirring efficiency. Depending on the intended use, a blade shape with a flat blade shape and a 0 to 90 degree twist angle (where the zero twist angle means flat blade) can be used.

The fourth is the overlap of the blade trajectories. When the trajectory of the moving blade is superimposed, an effective mixing ability can be expected.

The stirring device for high viscosity uses stirring with one or two blades or addition of a rotor or an impeller in addition to the blades to increase stirring efficiency. However, as a method for stirring more efficiently than these methods, a method using three blades An agitation device, a so-called planetary mixer, are widely commercialized.

Korean Patent Laid-Open No. 10-2010-0044068 is known as a planetary mixer in which three blades are oil-sprayed in a tank (see Patent Document 1). The above-described planetary mixer is characterized in that a drive shaft is provided to an elevatable stirring head, a rotor accommodating a driving member such as a gear for oil-moving the blade shaft is attached below the driving shaft, and the stirring head is lowered to be attached One blade is inserted into the tank, and the rotor is rotated by the drive shaft to cause the blades to be lubricated.

FIG. 1 and FIG. 2 show a three-blade system used in the conventional stirring apparatus. The main body 1 of the stirring apparatus (planetary mixer) And the blades 3 are arranged to move in a reverse direction in the tank through the motor 4 and the planetary gear mechanism so that the directions of the revolutions and the revolutions of the blades 3 are reversed. Shaped wedge portion having a diameter D connected to the upper side member 6 connected to the upper side member 6 and the lower side member 7 positioned below by a wing portion 8 which is twisted in the circumferential direction, The portion 8 is warped in the circumferential direction so that the upper member 6 and the lower member 7 are shifted by 45 占 or 90 占 to make the position (the embodiment shown in Fig. 2 has a twist angle of 90 占.

In order to prevent the blades 3 having the twist angle of 90 degrees from colliding with each other, the installation position of the drive shaft 5 is set so that the rotation loci do not interfere with each other, so that a dead zone dz ). In the dead zone (dz), there is a phenomenon in which the input material is not stirred, so that uniform stirring is difficult and time-consuming when agitating the high viscosity material, It is coming.

The reason why the dead zone dz can not be avoided in the case of the stirring apparatus having the conventional three blades 3 shown in FIG. 2 is that the inventors of the present invention have found that the three driving shafts 5 rotate in the same direction And the twist directions of the blade 3 wing portions 8 are all the same and in the initial setting state the bottom side member 7 of the bottom side or the top side members 6 of the top side are formed to have an isosceles angle of 120 If the rotational loci (a, b, c) of the blades 3 are made to be in an overlapping state, that is, bringing the drive shafts 5 closer to each other, interference between the members can not be avoided, (A, b, c) of the blade can be slightly overlapped as shown in FIG. 3 (a). However, in this state, the dead zone (dz) is minimized (See FIG. 3 (b)), it is impossible to completely eliminate the formation of the dead zone (dz) in the current technology, Lt; / RTI >

Patent Document 1: Korean Patent Publication No. 10-2010-0044068

It is therefore an object of the present invention to provide a method and apparatus for mixing a high viscosity material with a non-agitated material, It is an object of the present invention to provide a stirring device having three blades without the formation of zones.

Another object of the present invention is to provide an agitating device having three blades which can enlarge the diameter of the blade and increase the agitating force to improve the stirring efficiency without formation of dead zones.

According to an aspect of the present invention, there is provided an agitation apparatus including three blades without forming a dead zone of the present invention. The agitation apparatus includes three blades mounted rotatably on three rotation shafts arranged in a triangle shape, Wherein the rotation axis of the three blades is arranged such that the outline rotation locus of the three blades overlap each other so that dead zones are not formed, two of the three blades are rotationally driven in the same direction, Wherein the initial setting method of the three blades is such that one side ends of the lower side members of the two blades having the same rotational direction are arranged toward the overlapping region in such a manner that they are aligned at an angle of 45 DEG with respect to the reference line, A lower side member of one blade having a different rotation direction is arranged on the reference line It characterized in that that batch to fulfill each.

According to another aspect of the present invention, there is provided a stirring apparatus including three blades rotatably mounted on three rotating shafts arranged in a triangular shape, wherein an outline rotation locus of the three blades forms a dead zone And the other of the three blades is rotationally driven in the same direction and the other one of the blades is rotationally driven in the opposite direction, wherein the initial setting method of the three blades And the lower blades of the two blades whose rotational directions are opposite to each other are arranged at right angles to each other, and the remaining one blade is disposed at right angles to the blades having the same rotational direction as the blades and parallel to the blades having different rotational directions .

According to the present invention, if the twist angle of the blade is 0 ° (flat blade without wing twist angle) to 90 ° and the blade wing has a twist angle other than 0 °, the remaining one blade wing And the twist direction is formed opposite to the twist direction of the two blade blades.

In the present invention as described above, driving control is performed such that two of the three blades in which the rotating shaft is disposed in a triangular shape are rotated in the same direction and one is rotated in the opposite direction, and the two blades are controlled such that the lower side members of the blades And the lower side members of the remaining one blade are disposed at right angles to the reference line and the remaining one blade side is twisted in the opposite direction or the lower side of the two blades And a lower side member of the other one of the blades is perpendicular to the lower side member of the blade having the same rotational direction as the lower side member and is formed parallel to the lower side member of the blade having the opposite direction of rotation, The twist direction of this other one blade wing is opposite to the other two Even if the rotation trajectories of the three blades overlap each other, they do not interfere with each other and do not collide with each other, so that the formation of the dead zone can be completely eliminated. As a result, the non- And a uniform mixing quality can be expected.

Assuming the stirring vessel of the same diameter, the diameter of the blade according to the present invention can be made larger than that of the blade having the conventional dead zone, so that it is possible to increase the linear velocity of the blade rotation locus, have.

1 is a view showing an agitating device having three blades according to the prior art.
Fig. 2 is a view showing formation of a dead zone and a rotation driving direction of a blade in a conventional stirring device having three blades.
FIG. 3 (a) is a view showing the arrangement of the blades minimizing the dead zone, and FIG. 3 (b) is a view showing a state in which when the rotational locus of the blade is overlapped to completely eliminate the dead zone in the prior art, Fig.
4 is a side view of the external appearance of the stirring apparatus according to the present invention.
FIG. 5 is a front view of an external appearance of a stirring apparatus according to the present invention, in which a stirring vessel for forming a stirring chamber is removed and a blade installation structure inside is shown.
6 (a) to 6 (c) are views showing the shape according to the twist angle of the blade wing used in the present invention, wherein (a) is a shape (0 °) without a twist angle of the blade wing, (C) is a view showing a shape when the twist angle of the blade portion is 45 [deg.].
FIG. 7 is a view showing two kinds of blades having different twist directions of the blade portions used in the present invention. FIG.
8 is a view showing the arrangement and rotation direction of the blades of the stirring apparatus according to the first embodiment of the present invention.
FIG. 9 is a view showing a state of the blades of the stirring apparatus according to the first embodiment of the present invention when the blades rotate. FIG.
FIG. 10 is a schematic view showing a simplified state of the blades of the stirring apparatus according to the first embodiment of the present invention when the blades are rotated.
11 is a view showing the arrangement and rotation direction of the blades of the stirring apparatus according to the second embodiment of the present invention.
FIG. 12 is a view showing a state of the blades of the stirring apparatus according to the second embodiment of the present invention at the time of rotation. FIG.
FIG. 13 is a schematic diagram showing a simplified state of the blades of the stirring device according to the second embodiment of the present invention when the blades are rotated.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings in order to fully understand the present invention. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Further, detailed descriptions of well-known functions and configurations that may be unnecessarily obscured by the gist of the present invention are omitted.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which: FIG.

FIG. 4 is a side view of the stirring device according to the present invention. FIG. 5 is a front view of an external appearance of the stirring device according to the present invention, wherein the stirring container V forming the stirring chamber is removed And shows the internal structure of the blade installation.

The stirring device 30 according to the present invention is provided with a motor and a power transmission device (not shown) built in the upper side of the device housing 32 and is provided with a gear box (not shown) for appropriately increasing the power transmitted through the power transmitting device And three drive shafts 36, 38 and 40 of the blades A, B and C are provided in the lower portion of the gear box 34, The two blades A and B are rotated in the same direction and the other one of the blades C is rotated in a direction opposite to the rotation direction as shown in Fig. .

As shown in FIGS. 7 and 8, for example, the three blades A, B, and C have a boss portion 42 at the upper portion where the lower ends of the respective drive shafts 36, 38, And an upper member 44 (hereinafter, subscripts a, b, and c are used when there is a need to distinguish the members, in such a manner that the boss unit 42 horizontally protrudes to both sides of the boss unit 42, For example, in the case of a 90 ° twist angle as in the case of the illustrated embodiment, the upper side member 44 and the lower side member 46 (hereinafter referred to as " When the members need to be distinguished, subscripts a, b, and c are used, and 46 is used as a representative code). Starting from both ends of the lower member 46, And vanes 48 and 50 for connecting the vanes 44 and 44 to each other.

The wings 48 and 50 extend from the lower member 46 to the upper member 44 and are formed to have a twist angle of 0 to 90 degrees and a twist angle of 90 degrees in the illustrated embodiment If the twist direction of the two blades A and B having the same rotation direction is clockwise (reference is made to the drawing), the blade 50 of the remaining one blade C, The direction of twist is the counter-clockwise direction.

The three blades A, B and C are driven by the drive shafts 36, 38 and 40 so as to have overlapping spaces 52 in which the rotational trajectories a, b and c overlap each other The two blades A and B having the same rotation direction are arranged so as to be located at apexes of an equilateral triangle. The reference lines 54 passing through the overlapping space 52, One side end of each of the lower side members 46a and 46b is formed so as to have an angle of 45 degrees to the left and to the right under the state of being collected toward the overlapping space 52 The lower side member 46c of the remaining one blade C having a different rotational direction is perpendicular to the reference line 54. That is, The upper side member 44 of the blade C is in contact with the reference line 54, The lower side members 46a and 46b of the blades A and B and the upper side member 44 of the blade C have an isosceles configuration of 120 degrees based on the initial setting state The three members 46a, 46b and 44 appear to interfere with each other on the plan view of FIG. 8, but the lower member 46a and 46b and the upper member 44 of the blade C ) Are vertically spaced from each other and do not actually interfere with each other at all.

Fig. 9 is a view showing the state of rotation of the blades A, B and C according to the present invention in the initial setting state (this state is defined as a rotation angle 0 deg.) To 180 deg. The lower side members 46a and 46b of the two blades A and B having the same rotation direction are rotated at a right angle at all times irrespective of the rotation angle, The lower side member 46c of FIG. 4C can be seen that the relative position is constantly changing, and this fact can be clearly seen from FIG.

The schematic diagram of FIG. 10 shows the positional states of the lower members 46a, 46b and 46c by dividing the blade A, B, and C by ten sections from the initial setting state of 0 ° to 90 °. It can be seen that the three lower side members 46a, 46b and 46c do not collide with each other and collide with each other. For the sake of convenience, the lower side members 46a, 46b and 46c are represented by a rectangular member, And the two lower side members 46a and 46b gathered at the reference line 54 at 90 deg. Are seen to interfere with each other, but both ends of the lower side members 46a and 46b are actually chamfered in a tapered shape (Refer to Figs. 7 to 9) does not occur.

Therefore, the overlapping space 52 (the small triangular space in which the three rotational trajectories a, b, and c overlap) shown in FIGS. 8 and 9 is not a dead zone, but a rotational locus of the three blades A, B, (a, b, and c). Therefore, mixing is actively performed with respect to other regions, so that the efficiency of mixing is greatly improved as compared with the prior art in which a dead zone is inevitably present.

Figs. 11 to 13 illustrate another embodiment (second embodiment) of the blade arrangement according to the present invention, which is different from that of the previous embodiment in that the lower side of the three blades D, E, The lower side members 46a and 46b of the two blades D and E having the same rotation direction are perpendicular to each other (one lower side member 46a is parallel to the reference line 54) And the other lower member 46b is disposed horizontally at right angles to it), and the lower one of the rotational directions thereof, i.e., the lower side member 46c of the blade F shown on the upper side, 54 and the wings 48 and 48 of the two blades D and E having the same rotational direction are the same and the remaining one blade F ) Are formed in a direction opposite to the twist direction.

12 is a diagram showing a state in which the blade (D, E, F) according to the second embodiment is rotated 180 degrees from the initial setting state (this state is defined as a rotation angle of 0 DEG) The lower side members 46a and 46b of the two blades D and E having the same rotation direction rotate at right angles at all times regardless of the rotation angle And the lower side member 46c of the remaining blade F having a different rotation direction can be seen to have a relative position constantly changing. This fact can be more clearly seen from FIG. .

The schematic diagram of FIG. 13 shows the positional states of the lower members 46, 46, and 46 divided by ten sections from the initial setting state of the blades D, E, and F to the 90 ° rotation position. It can be confirmed that the rotation loci (a, b, c) of the three lower side members 46, 46 and 46 do not collide with each other at any rotation position even though they cross the overlapping space 52, It is possible to reliably eliminate the zone and to increase the diameter of the blade relatively more than the conventional one having the stirring vessel V of the same diameter due to the overlap of the rotation locus, will be.

In the present invention with this configuration, no interference occurs regardless of the twist angle of the blade wing, that is, from the 0 ° to the 90 ° twist of the flat blade. This is because if there is no interference at the 90 ° twist angle, The interference phenomenon can not occur. Therefore, the present invention has been described using a blade having a 90 ° twist angle.

In the foregoing, preferred embodiments of the present invention have been described herein, which is the best mode known to the inventors for carrying out the invention. It will be readily apparent to those skilled in the art that modifications of these preferred embodiments are possible from the foregoing description. The inventors expect that skilled artisans will employ these variations, and the inventors intend to practice the invention in addition to those specifically described above. Accordingly, the invention includes all modifications that are equivalent to the subject matter recited in the claims appended hereto as permitted by applicable law. Furthermore, all possible combinations of the above-mentioned elements will be included in the present invention unless specifically mentioned or excluded in the present specification.

30: stirring device 32: device housing
34: gear box 36, 38, 40:
42: Boss portion A, B, C: Blade
44: upper member 46 (a, b, c): lower member
48, 50: wing portion 52: overlapping space
54: Baseline

Claims (3)

A stirring device comprising three blades rotatably mounted on three rotary shafts arranged in a triangular shape, wherein the rotary shafts are arranged such that contour rotation trajectories of the three blades overlap one another so that no dead zone is formed , Two of the three blades are rotationally driven in the same direction, and the other one of the blades is rotationally driven in the opposite direction, and the initial setting method of the three blades is such that the lower blade of the two blades And the lower ends of one blade having the other rotation direction are arranged at right angles to the reference line. The blade according to any one of claims 1 to 4, Wherein the blade has three blades.
A stirring device comprising three blades rotatably mounted on three rotary shafts arranged in a triangular shape, wherein the rotary shafts are arranged such that contour rotation trajectories of the three blades overlap one another so that no dead zone is formed , Two of the three blades are rotationally driven in the same direction and the remaining one blade is rotationally driven in the opposite direction, the initial setting method of the three blades is such that the two blades Wherein the lower blade is disposed at right angles to each other and the remaining one blade is disposed at right angles to the blades having the same rotational direction and parallel to the blades having different rotational directions. And a stirring device.
3. The method of claim 1 or 2, wherein the twist angle of the blade wing is 0 DEG (flat blade without wing twist angle) to 90 DEG, and if the blade wing has a twist angle other than 0 DEG, Wherein the twist direction of one blade is formed opposite to the twist direction of the two blade blades.

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