JPH05285359A - Agitator having multifunctions - Google Patents

Abstract

PURPOSE:To provide an agitator which is capable of being applied to mixing, dispersing and dissolving liquid, a viscous body and solid material and to heterogeneous reaction large in viscosity change and has efficient multifunctions. CONSTITUTION:A main shaft agitator B and an auxiliary shaft agitator C are equipped in the inside of a cylindrical vessel 1 constituted of a straight drum part 2 and an inverse conical bottom part 3. The main shaft agitator is constituted so that a plurality of impellers 7a, 7c... 7i having knife edges 7b, 7d... 7j are fitted to a main shaft 6 and provided in such multisteps that the adjacently positioned mutual impellers are not positioned at the same angle in the same level and on the same centerline in the main shaft. The auxiliary shaft agitator is constituted so that an auxiliary shaft 10 surrounds the main shaft in the same centerline as the main shaft of the main shaft agitator. A scraper is fitted to the auxiliary shaft and scrapes the rear of the cover of the vessel and the respective internal surfaces of the straight drum part and the inverse conical bottom part. When the main shaft agitator and the auxiliary shaft agitator are normally driven, these are relatively rotated in the counter direction.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a multifunctional stirrer for use in mixing, dispersing, dissolving liquids, viscous materials, solids, etc., and in heterogeneous reactions with large changes in viscosity.

[0002]

2. Description of the Related Art A container equipped with a stirrer equipped with multistage stirring blades at the center of a container and a scraping plate (hereinafter abbreviated as scraper) adapted to operate along the wall surface of the container, or a fixed buffer. There are some with plates, but the flow of liquids and viscous substances is a little more complicated than those without scrapers and buffer plates, but they have a regular direction and contain air. However, it also took a long time to dissolve the solid matter.

[0003]

An agitator capable of giving a complicated flow to a work to reduce air entrainment and shortening the time required for mixing, dispersion, dissolution, heterogeneous reaction, etc. The challenge is to make the configuration.

[0004]

[Means for Solving the Problems] A main shaft stirrer and a sub shaft stirrer are provided in a cylindrical container having a straight body and an inverted conical bottom. The main shaft stirrer is provided with stirring blades based on the main shaft, and these stirring blades are placed at their target positions, or
It was arranged so that it had a certain angle, and multiple stages were arranged on the main shaft in multiple stages with different stages. In addition, these stirring blades,
The peripheral edge was either single-sided or double-sided, and was set at a right angle or an arbitrary angle with respect to the main axis. further,
In contrast to this main shaft agitator (hereinafter abbreviated as "main agitator"), a sub shaft agitator having a scraper attached to the sub shaft so that the sub shaft covers the main shaft on the same center line as the main shaft (hereinafter, planetary) The scraper) is rotated like a planet in the opposite direction relative to the main agitator, and scrapes (scrapes) the back wall of the cylindrical container, the straight barrel and the bottom of the inverted cone. As a result, a plate-shaped scraper (hereinafter referred to as planetary scraper) has a structure that acts so that there is no retention or dead area (hereinafter referred to as dead space).

[0005]

[Operation] A case in which a solvent is previously charged in a cylindrical container and a lump is charged to form a viscous liquid will be described with reference to FIG. In Fig. 1, the blade at the edge of the uppermost stirring blade (hereinafter simply referred to as blade) of the main agitator is directed obliquely upward, where the agglomerate is cut or damaged and the solution containing it is cut. As it is pressed down, push it downwards and feed it near the next blade. The blades of the stirring blades (blades) are directed obliquely downward, but near this point, the upward flow and the solution flow introduced from below are mixed. This mixed solution contains lumps, damaged lumps, swollen materials, etc. (hereinafter these are abbreviated as solids), but again, the cutting, shearing, damage or dismantling of solids is performed and these are As it scoops up, it mixes with the upward flow and becomes a mixed flow. The planetary scraper, which rotates relatively slowly in the direction opposite to the direction of rotation of the main agitator, is turning, and the solid matter adhered to the back of the cylindrical container lid by splash entrainment (in other words, static attachment While scraping off the kimono and scraping the side wall of the straight body of the cylindrical container at the same time, the mixture is agitated in opposition to the flow direction of the mixed flow, causing a wave depending on the liquid. Since the planetary scraper has one side of the counter shaft, there is a slight time difference between passing through the same point after rotating once. During this time difference, the rippling of the mixed flow and the accumulated energy of the directional flow are released and collide with the side wall of the straight body part. In such a phenomenon, an area with a relatively small influence of the main agitator and the planetary scraper is generated at an indefinite position, but here, the one with a large specific gravity moves downward, and the solution under it winds up. A mixed flow that has been swirled or scraped up rises and mixes, and many regions that cause phenomena such as convection are generated or disappear. At the inverted conical bottom of the cylindrical container, the scraping plate of the planetary scraper (hereinafter referred to simply as scraper) has a certain angle on its slope, so scraping the solution in the vicinity causes scraping. A flow different from the flow in the body, and
The solution in the vicinity is pushed up. In addition to the above (not shown in FIG. 1), the blade is attached at an arbitrary position of the main agitator or at a position where the blade has regularity in a direction perpendicular to the main shaft. By cutting the solids, dismantling, applying shearing force to the solution, blocking or disturbing the generated mixed flow and convection of the solution, and forming a more complicated flow. .. In addition, the stirring blade and the planetary scraper each have a small number of tool parts that are parallel or 90 degrees to the traveling direction, and most of them have other angles, reducing rotational resistance, Blades and scrapers (especially bottom scrapers) that eliminate air entrapment and have beveled even if foaming occurs,
The foaming is destroyed or pushed upward to disperse, and the scraper at each part of the planetary scraper covers almost all the inner wall of each part of the cylindrical container and does not create a dead space where the stirring action does not reach. Even if the conventional paddle type, anchor type, comb type, screw type, turbine type, disc type, etc. are combined with a buffer plate or scraper, or if they are rotated forward and backward, etc. Had a certain directional flow, there was no mutual collision of the contents, and the dead area of the scraper was unavoidable, and it took a long time to reach the desired purpose. In contrast to these conventional ones, the one according to the present application is provided with a main agitator and a planetary scraper in a cylindrical container having a straight body portion and an inverted conical bottom portion, and as described above due to their additive effects. When the action is summarized, cutting and shearing generate mixed flow, and this directional flow is changed, causing ripples and convection, and narrowing and releasing of flow. , The internal walls do not collide with each other to form a complicated flow, the dead space is not created in the inner wall of the cylindrical container, and the static adhering substances that are easily generated on the inner wall are always removed, and the mixing, dispersion, dissolution and viscosity change are large. The homogeneous reaction can be brought to a desired state extremely quickly.

[0006]

[Example] An example of the embodiment will be described with reference to the drawings. FIG. 1 is a simplified front sectional view of the present invention, FIG. 2 is a simplified plan sectional view showing a cross section of FIG. 1A-A, and FIG. 3 is a simplified partial front view of a spindle agitator. In FIG. 1, (A) is a stirrer of the present invention, (B) is a main shaft stirrer, (C) is a sub shaft stirrer, (1) is a cylindrical container, (2) is a straight body part, (2)
a) Partial connection in a cylindrical container, (3) is an inverted conical bottom, (4) is a raw material supply port, and (5) is an outlet. (6) is the main shaft of the main shaft agitator (main agitator in relation to the sub shaft), (7a), (7c)
(7e) (7g) (7i) are stirring blades (blades),
(7b) (7d) (7f) (7h) (7j) is a knife, (8) is a spindle pulley, and (9a) (9
b) is a bearing for the main shaft (6). Illustration of a drive motor for this main shaft agitator is omitted. (10) is
Counter shaft Counter shaft of the stirrer (outer shaft in relation to the main shaft)
Then, (9c) is a bayer linda for the counter shaft (10),
a) is a side cover of the scraper, (11b) is a side body of the scraper, and (11c) is a side bottom of the scraper. (12) is a sub-shaft pulley, but the drive motor connected to it is not shown. Next, regarding the embodiment, the case is as described in (Operation). However, to add a little more, in the steady state operation of the stirrer of the present invention, the main shaft agitator (main agitator (B)) is rotated to the right at a high speed (600 rpm or more) and the auxiliary shaft stirrer [planetary scraper] is used. (C)] is a medium-low speed (less than 2/1 speed of the main shaft stirrer) counterclockwise rotation, in which at least a part of the raw material which is a component constituting the composition liquid to be produced is a blade of the main agitator The combination or configuration of the above is repeated until it becomes one unit or more, and an appropriate amount is charged, and either the main agitator or the planetary scraper or both are operated at a rotational speed slower than the steady state. Then, the rest of the raw material is gradually added, and the operation is carried out at an unsteady rotational speed or any appropriate rotational speed. When heat is generated or absorbed in this processing step,
If the specified conditions are not met or if the danger is foreseen, slow down the speed of the main agitator or planetary scraper, cool it, or in the case of heat absorption, do the opposite. It is something to do.
The above shows one example of the embodiment, but as far as the blade is concerned, its size can be set appropriately,
All or any side of the edge is a naifedge with an arbitrary angle, and this is attached at an arbitrary angle with respect to the main axis. No, it has multiple or multiple stages, and the center lines of the two are offset from each other in the vertical direction. Also,
When viewed from the front, the planetary scraper is bent at the partial connection part (2a) in the cylindrical container, but when viewed from the side, it is not straight but partially bent or curved,
In addition, the contact surface of the scraper is partially characterized by a certain inclination angle. The scraper may have a shape in which a spiral with a large span is cut at an appropriate position. Although not shown, for heating and cooling, a jacket may be attached to the cylindrical container, the main shaft may be hollow, and a reflux condenser may be appropriately attached. In addition to this, as additional mechanical elements, pipes for vacuum, pressurization and inert gas replacement, seals at various points, various material supply ports and pipes, and attachment of measuring equipment are commonly used for distillers. Of course, the ones applied to the melting machine and the melting machine can be used. The stirrer configured in this way can be used for mixing, dispersion, dissolution, and heterogeneous reactions with large changes in viscosity, but the form of raw materials and processed products used for that purpose are liquid and viscous. It can be arbitrarily processed such as bodies (syrup-shaped, putty-shaped, etc.) and solid materials (granular, pellet-shaped, lump-shaped, etc.) having the same shape or different shapes. This means that the blades and scrapers have an appropriate angle and that the blades have multiple stages, which widens the applicable processing range, improves stirring efficiency, disperses the required rotational energy, and is relatively small. It will be possible to use it even with a large capacity motor.

[0007]

By the constitution of the present invention, a liquid,
Demonstrate multifunctional performance that can be applied to heterogeneous system reaction such as viscous liquid, putty-like, granular, pellet-like, and block-like shapes or different shapes such as mixing, dispersion, dissolution and large viscosity change Will be done. In addition, the required rotational energy can be reduced and a relatively small capacity motor can be applied. Since a dead space for stirring is not created during operation and there is no stagnant portion, stirring efficiency is good and the desired product is obtained. It can be achieved in a short time.

[0008]

[Brief description of drawings]

FIG. 1 is a simplified front sectional view of the present invention.

FIG. 2 is a schematic plan sectional view showing a cross section taken along line AA of FIG.

FIG. 3 is a simplified partial front view of a spindle agitator.

[Explanation of symbols]

A: Stirrer B: Main shaft stirrer C: Secondary shaft stirrer 1 ... Cylindrical container 2 ... Straight body part 2a ... Partial connection part in cylindrical container 3 ... Inverted conical bottom part 4 ... Raw material Supply port 5 ... Outlet port 6 ... Spindle 7a, 7c, 7e, 7g, 7i ... Stirring blade 7b, 7d, 7f, 7h, 7j. 9C ... Bearing for countershaft 10 ... Countershaft 11a ... Scraper side cover 11b ... Scraper side trunk 11c ... Scraper side bottom 12 ... Countershaft pulley

Claims (3)

[Claims] 1. An apparatus comprising a main shaft stirrer and a sub shaft stirrer in a cylindrical container having a straight body part and an inverted conical bottom part, wherein the main shaft stirrer has stirring blades based on the main shaft.
Those equipped with a plurality of stirring blades, which are located adjacent to each other in the stirring blades, are configured in multiple stages in different stages so that they are not on the same angle, at the same level, and on the same center line on the spindle. On the same center line, a counter shaft stirrer with a scraper attached to the counter shaft, which covers the main shaft, rotates like a planet in the opposite direction relative to the main shaft stirrer in the normal driving state,
A multi-function stirring device characterized in that the back surface of a cylindrical container, the inner wall surfaces of the straight body portion and the inverted conical bottom portion can be scraped. 2. A stirring blade is provided with a knife blade in which the peripheral end portion is one-sided or two-sided, and the plurality of stirring blades are formed at right angles or at arbitrary angles with respect to the main axis. A multi-function stirring device according to claim 1. 3. A scraper attached at one place having a counter shaft extends vertically downward or along a curved line on the inner wall surface of the straight body portion, and at the connecting portion of the straight body portion wall and the inverted conical bottom portion. , Bending or curving along the inner wall surface on the extension line of the state in the straight body part, so that the workpiece can be scraped up at an arbitrary angle with respect to the conical inner wall surface of the inverted conical bottom part The multifunctional stirring device according to claim 1, characterized in that