JP3129394B2 - Mixing equipment and mixing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mixing apparatus and a mixing method, and more particularly, to a liquid which is difficult to mix with each other, a liquid which is difficult to mix with each other and / or another liquid. The present invention relates to a mixing apparatus and a mixing method for mixing any of the powder and the powder and / or gas.

[0002]

2. Description of the Related Art For the purpose of reaction and neutralization, two liquids that are difficult to mix with each other, and any one of the two liquids that are difficult to mix with each other and / or the other liquid and a particulate material and / or a gas. Conventionally, various types of mixing apparatuses, such as various stirring reactors and neutralizing apparatuses, have been widely used. However, conventional mixing devices such as a tank-type continuous multi-stage stirring type reaction device and a neutralization device have a relatively high mixing ratio, but on the other hand, require a large installation area in comparison with the processing amount. Since many stirrers and pumps are required, there is a drawback that a large amount of power is required.

[0003]

SUMMARY OF THE INVENTION The inventor of the present invention has solved the disadvantages of the conventional stirring reactor and the neutralizer, which are mixing devices, has the advantages of each, and has further promoted these advantages. In order to develop a mixing apparatus, as a result of intensive studies, a plurality of mixing chambers were arranged by partitioning the cylinder with a partition wall, and an aging chamber was provided above these mixing chambers if desired. By attaching a stirring blade to the liquid, not only mixing of the liquids that are difficult to mix with each other, but also any of the liquids that are difficult to mix with each other, or the liquid mixture of these liquids and the powder and / or gas can be continuously performed. The present invention has been achieved based on the new finding that a mixing apparatus and a mixing method having high mixing efficiency can be obtained by allowing them to co-flow with each other, thereby increasing the throughput, saving the installation area and the required power, and obtaining a high mixing efficiency. It was.

[0004]

That is, according to the first aspect of the present invention, a plurality of mixing chambers partitioned by partition walls are provided in a cylinder having a liquid supply port at a lower portion and a liquid mixture discharge port at an upper portion. An opening is formed in the center of the bottom plate of the mixing chamber, and a central cylindrical body having an opening at an upper portion is provided around the periphery of the opening so as to protrude upward. A mixing device, wherein a stirring shaft is provided so as to penetrate through the center of the body, and the mixing chamber is provided with a stirring blade attached to the stirring shaft and an intermediate supply port at a lower portion thereof. .

[0005] In the mixing apparatus of the present invention, the cylinder is formed by a partition wall which is substantially orthogonal to the long axis of the cylinder.
It is divided into a plurality of chambers, and each of these chambers is a mixing chamber. These partitions are the upper partition and the bottom plate of the mixing chamber. In the mixing apparatus of the present invention, the cylindrical body is usually a hollow cylindrical body, and correspondingly, the shapes of the partition walls such as the upper partition and the bottom plate of the mixing chamber are all horizontal sections of the cylindrical body (cylindrical body). A cross section substantially orthogonal to the long axis of the above-mentioned, the same applies hereinafter). The cylinder
Its horizontal cross-sectional shape can be a cylinder such as an ellipse and an ellipse, and a polygonal cylinder such as a square, a regular hexagon and a regular octagon. In these cases, the shape of the partition wall is the same as the shape of the horizontal cross section of the cylindrical body, and is a circle such as an ellipse and an ellipse, and a polygon such as a square, a regular hexagon and a regular octagon, respectively. Needless to say, liquid sealing must be performed between the peripheral edge of the partition and the inner peripheral surface of the cylindrical body so as to prevent liquid leakage.

The cylindrical body is provided with a liquid supply port at a lower portion and a liquid mixture discharge port (hereinafter sometimes referred to as a mixture with a liquid, hereinafter a mixture) at an upper portion thereof. The bottom plate of the mixing chamber has an opening at the center (hereinafter sometimes referred to as the center opening). The shape of the central opening is not particularly limited and is usually a circle, but may be a circle such as an ellipse and an ellipse, and a polygon such as a square, a regular hexagon and a regular octagon. A central cylindrical body protruding upward and having an upper opening is provided around the periphery of the central opening. The shape of the central cylinder corresponds to the shape of the central opening. For example, when the central opening is a circle, the central cylinder is a hollow cylinder, truncated cone or hemisphere with no bottom.

An opening (hereinafter sometimes referred to as an upper opening) is formed in an upper portion of the central cylinder. The shape of the upper opening differs depending on the shape of the intermediate cylinder. For example, even in the case of a central cylinder such as a cylinder, a truncated cone, or a hemisphere whose horizontal cross section is a circle, the upper opening is also a circle. A check valve is provided in the upper opening of the central cylinder as required. When gas is used as the mixture and / or when the amount of the supply liquid is small, the mixture may flow backward from the upper opening of the central cylinder and may not be sufficiently mixed. It is preferable to provide this in the upper opening of the cylindrical body because this backflow can be prevented.

[0008] The valve body of the check valve is a plate body which is brought into contact with a valve seat which is the periphery of the upper opening of the central cylinder, and this valve body is pressed against the valve seat by a spring if desired. Is also good. The valve seat is opened when a large amount of liquid is continuously supplied to the mixing chamber from below, but when the gas is used as the mixture and / or when the supply liquid amount is small, the check valve is stopped. When an air gap is created in the mixing chamber below the valve, the valve seat is moved by its own weight, the pressing force of the spring if a spring is provided, and the load of liquid and mixture above the check valve. It is closed and prevents backflow of the mixture from the upper opening of the central cylinder.

When a check valve is provided at the center of each partition, the center of the valve seat of each check valve is inserted, and the stirring shaft is provided so as to pass through the center of the cylindrical body. The valve body of the check valve is slidable with respect to the stirring shaft, but the liquid sealing is performed so that there is substantially no liquid leakage from between the periphery of the hole of the valve body and the outer peripheral surface of the stirring shaft. Must have been. Each mixing chamber is provided with a stirring blade mounted on the stirring shaft.

[0010] An intermediate supply port is formed in a lower portion of the mixing chamber. The intermediate supply port is provided with a liquid supplied from a liquid supply port at the lower part of the cylindrical body (hereinafter, also referred to as a first liquid).
This is a supply port for supplying a liquid (hereinafter, also referred to as a second liquid) different from the first liquid, a granular material and a gas to be mixed with the first liquid to the mixing chamber. The granules are usually fed into a mixing chamber as a suspension or slurry mixed with a liquid. In addition, for example, it is preferable to provide a liquid outlet at the bottom of the cylinder in order to discharge the liquid or mixture in the cylinder from the cylinder at the end of the operation. When gas is supplied as the mixture from the intermediate supply port, it is preferable to provide a gas discharge port at the top of the cylindrical body.

Further, it is preferable to provide an aging chamber above the mixing chamber. An opening is formed in the center of the partition wall (corresponding to the upper partition wall of the mixing chamber and the bottom plate of the ripening chamber) which defines the mixing chamber and the aging chamber, in the same manner as in the bottom plate of the mixing chamber. A central cylinder having an upper opening is protruded upward from a peripheral edge of the central cylinder. It is preferable to provide a check valve also in this upper opening. The aging chamber is provided above and in contact with the mixing chamber provided with the intermediate supply port. The intermediate supply port may be provided in all of the mixing chambers, or may be provided only in a desired mixing chamber.

The stirring blade provided in the mixing chamber must have high stirring efficiency. However, if the stirring efficiency is good, there is no particular limitation on the type of the stirring blade. The stirring blade described in the specification and the drawings of Japanese Patent Application No. -8776 and Japanese Patent Application No. 6-337662 can be suitably used. Each of these stirring blades is a stirring blade in which a partial stirrer is mounted on a support mounted on a stirring shaft. Thus, the partial stirrer is not driven by itself for stirring, does not particularly require power for driving itself, and is mounted by rotating the stirring shaft. The support may be rotated about a stirring shaft to allow the mixture to pass through the inside of the partial stirrer, as long as it has the ability to locally stir the inside of the mixture even inside the structure. Although there is no particular limitation, a droplet dispersing apparatus conventionally used as a flow mixer can be usually used.

A flow mixer is described in, for example, "Chemical Engineering Handbook (edited by The Chemical Engineering Association, Maruzen Co., Ltd., Showa)
(Published in 1963) on page 567, right column "
It is defined as "a device that performs liquid-liquid dispersion by a method utilizing kinetic energy due to the flow of a liquid, and which is installed in a flow path during liquid transport". Thus, specific examples of the partial agitators of these agitating blades have a hollow cylinder with a constant inner diameter and various internal structures built therein by externally circumscribing or slightly providing a gap on the inner peripheral surface thereof. Such as a tube. The cylinder of the partial stirrer may be, for example, either a cylinder or a square cylinder. Further, specific examples of the internal structure include a sponge-like material such as a rolled mesh and a sintered metal, one or more meshes intersecting with the long axis of the cylinder, one or more twisted plates and the periphery. There are a plurality of bent plates or flat plates which are crossed with each other and arranged alternately in opposite directions.

The partial stirrer is mounted radially on a support substantially perpendicular to the stirring shaft to form a stirring blade. In this case, the partial stirrers can be arranged in parallel on the rotating surface of the stirring blade, or can be arranged in parallel so as to sandwich the rotating surface. When the stirring blade is rotated, one end of the partial stirrer is located at the circumferential end (hereinafter, sometimes referred to as the outside) of the plane of rotation of the single or multiple partial stirrers. It is also preferable that the stirrer is separated from the stirring shaft. During the rotation of the stirring blade, the tip of the outer tip of the partial stirrer that is separated from the stirring shaft (hereinafter, also referred to as the leading end) is approached (hereinafter, referred to as the leading end).
Trailing edge).

In these cases, by rotating the stirring blade, the material to be mixed is stirred by the cylinder of the partial agitator itself, and the material to be mixed is opened on the rotation shaft side of the partial agitator (hereinafter referred to as a first opening and a second opening). ), Flows into the partial agitator, is mixed by the complicated flow generated by being agitated by the internal structure in the partial agitator, and is opened on the circumferential side opening of the partial agitator (hereinafter, referred to as an opening). (Also referred to as the second opening).

Further, as a blade of the stirring blade of the present invention, a plurality of blades are provided radially on the periphery of a disk substantially perpendicular to the long axis of the stirring shaft and substantially perpendicular to the disk. If desired, a so-called flat blade disk turbine in which the tip side (circumferential side) of the blade is sandwiched between plate bodies is also preferably used. In order to improve the stirring efficiency, it is preferable that the outer diameter of the stirring blade be larger than the diameter of the upper opening of the central cylinder of the bottom plate of the mixing chamber. In order to improve the stirring efficiency, the diameter of the upper opening of the central cylinder of the bottom plate of the mixing chamber is not more than の of the inner diameter of the cylinder, and the outer diameter of the stirring blade is equal to the inner diameter of the cylinder. Is preferably 1/3 or more.

In the aging room, the mixture is temporarily stagnated to complete the mixing. Here, the mixed mixture is not separated into a liquid before mixing, for example. It is preferred to stir the mixture lightly so as not to settle. The stirring blade here is preferably one having low stirring efficiency, for example, a stirring blade having a disk, a small-area flat blade and a rod blade each substantially perpendicular to the long axis of the stirring shaft. and so on.

If desired, a jacket can be provided on the outer peripheral surface of the cylindrical body, which is preferable. Since the heat transfer coefficient of the liquid in the cylindrical body is improved by stirring, the liquid in the cylindrical body is efficiently heated or cooled by providing a jacket on the outer peripheral surface of the cylindrical body and heating or cooling from outside the cylindrical body. Further, the jacket can be provided over the entire outer peripheral surface of the cylindrical body or intermittently.

According to a second aspect of the present invention, in the mixing apparatus of the first aspect, the first liquid is supplied from a liquid supply port, and the first liquid is supplied to an upper part of a central cylinder provided on a bottom plate of the mixing chamber. The opening, the check valve and the mixing chamber provided as required are sequentially raised, and on the other hand, the second liquid and / or the granular material different from the first liquid supplied from the liquid supply port are mixed through the intermediate supply port. And the second liquid and / or the granular material and the first liquid raised in the cylinder and supplied to the mixing chamber are agitated and mixed in the mixing chamber. This is a mixing method characterized by sequentially raising the mixing chamber and discharging the mixture from the mixture discharge port at the top of the cylinder to the outside of the cylinder.

According to a third aspect of the present invention, in the mixing device according to the first aspect, the first liquid is supplied from a liquid supply port, and the first liquid is supplied to the mixing apparatus.
The liquid was supplied sequentially from the upper opening of the central cylinder provided on the bottom plate of the mixing chamber, the check valve and the mixing chamber provided as desired, while the gas and the liquid were supplied from the liquid supply port on the upper part of the cylinder. A second liquid and / or a granular material different from the first liquid is supplied to the mixing chamber from the intermediate supply port, and mixed with the gas and the second liquid and / or the granular material while being raised in the cylinder. The liquid and the liquid supplied to the chamber were stirred and mixed in the mixing chamber, and the obtained mixture was sequentially raised in each mixing chamber and sent to the mixture storage section at the top of the cylindrical body, where gas was separated in the mixture storage section. The mixing method is characterized in that the liquid mixture and the gas are discharged out of the cylinder from the mixture discharge port at the top of the cylinder and the gas discharge port at the top of the cylinder, respectively.

The mixing method of the present invention is not limited to the mixing of liquids that are hardly mixed with each other, but also the mixing of at least one liquid or a liquid mixture of these liquids with a powder and / or a gas. Can also be mixed. In the mixing method of the present invention, the granular material is usually supplied into a mixing chamber as a suspension or slurry mixed with a liquid.

The number of intermediate supply ports used in the mixing apparatus of the present invention is appropriately determined depending on the type and number of the materials to be mixed. For example, one intermediate supply port may be used to mix two liquids that are difficult to mix with each other.
In addition, in the case of mixing each of the two liquids and the granular material that are difficult to mix with each other, the granular material is supplied as a suspension mixed with either one of the two liquids. You only need to use one mouth. When the powder and the granular material and the gas are mixed in each of the two liquids, the number of the intermediate supply ports may be two. As the type of liquid to be mixed increases, the number of intermediate supply ports may be increased according to the increased number.

[0023]

DETAILED DESCRIPTION OF THE INVENTION The apparatus of the present invention as shown in the examples can be easily manufactured and mixed with one another using the mixing apparatus of the present invention as shown in the examples. It is possible to easily and efficiently mix at least two types of difficult liquids and at least one type of liquids that are difficult to mix with each other, and three or more types of powders and gases.

[0024]

The mixing apparatus of the present invention and the mixing method of the present invention
The present invention will be described more specifically with reference to the drawings, but the present invention is not limited to the embodiments. Example 1 Mixing Device of the Invention FIG. 1 shows the principle of a representative embodiment of the device of the invention,
It is a longitudinal section end view of the mixing device of the present invention. That is, the inside of the cylindrical tubular body 1 is defined by seven partition walls 2, 2,..., 2 and is divided into seven chambers having these partition walls as bottom plates.

From the bottom, the first, second, fourth and sixth chambers
The chambers are designated as mixing chambers 3, 3, ..., 3, respectively. The third, fifth and seventh rooms from the bottom are maturing rooms 4, 4, and 4, respectively.
It has been. Thus, each of the (lower) partition walls 2,2, ..., 2 corresponding to the bottom plate of the mixing chambers 3,3, ..., 3,
A circular opening 31 is formed in the center. A central cylindrical body 32 is provided around the periphery of the opening. This central cylinder 32
Is a bottomless truncated cone, the top of which is a circular upper opening 321 and the peripheral wall of which is slightly curved inward. The upper opening 321 is closed by a disk serving as a check valve 322. In each mixing chamber 3, a stirring blade 53 fixed to the stirring shaft 5 is provided above the upper opening 321 of the central cylinder 32. The stirring blade 53 is a stirring blade having a flat blade disk turbine having a high stirring efficiency as shown in FIG. The diameter of the upper opening 321 of the central cylinder 32 and the outer diameter of the stirring blade 53 are each 1/3 of the inner diameter of the cylinder 1.
The outer diameter of the stirring blade 53 is a central cylinder.
The diameter of the upper opening 321 is larger than the diameter of the upper opening 321.

The third aging room 4 from the bottom and the fifth aging room from the bottom
The height of each of the maturing rooms 4 is higher than the heights of the other rooms. Thus, a circular opening 41 is formed in the center of the partition 2 which is the bottom plate of each aging chamber 4. A central cylindrical body 42 is provided around the periphery of the opening 41. Each of the central cylinders 42 is a bottomless truncated cone, the top of which is a circular upper opening 421, and the peripheral wall of which is slightly curved inward. Aging room 4 of the third room from below
The upper opening 421 of the central cylinder 42 is closed with a disk serving as a check valve 422. Further, in the aging chamber 4, a stirring blade 54 fixed to the stirring shaft 5 is provided above the upper opening 421 of the central cylinder 42. The stirring blade 54 is a stirring blade having flat blades 541 having a small area and low stirring efficiency.
The diameter of the upper opening 421 of the central cylinder 42 and the outer diameter of the stirring blade 54 are respectively １ ／ and の of the inner diameter of the cylinder 1, and the outer diameter of the stirring blade 54 is 42 upper opening 42
1 is larger than the diameter.

A liquid supply port 11 is provided at the bottom and bottom of the cylinder 1.
And a liquid outlet 12 are provided. In the middle of the cylindrical body 1, intermediate supply ports 13, 13, which are connected to lower portions of the respective mixing chambers 3, 3, and 3 other than the first chamber, and
13 are provided. The space above the cylinder 1 is a mixture storage section 14. Further, a mixture discharge port 15 and a gas discharge port 16 which are in communication with the mixture storage section 14 are provided at the top and top of the cylinder 1. Stirring shaft
5 is received by the bearing at its upper end and lower end, each mixing chamber
The upper openings 321 and 421 of the central cylinders 32 and 42 of the ripening chamber 3 and the respective aging chambers 4 are inserted through the check valves 322 and 422. The outer peripheral surface of the stirring shaft 5 and the check valve 322,
The liquid is sealed so as not to leak from between the periphery of the hole 422.

FIG. 2 shows a stirring blade 53 having a flat blade disk provided in the mixing chamber 3 of the mixing apparatus of the present invention shown in FIG. In FIG. 2, a is a plan view of the stirring blade 53 having the flat blade disk, and b is an end view of the AA cut portion of the stirring blade 53 having the flat blade disk indicated by a. In the stirring blade 53 having the flat blade disk, the tip side (circumferential side) of the blade is sandwiched between the plate members. That is,
The stirring blade 53 has a center hole through which the stirring shaft 5 is inserted.A center hole through which the stirring shaft 5 is inserted is formed on the surface of the disk 531 which is substantially perpendicular to the long axis of the stirring shaft 5. Boss 532 is fixed. On the surface of the disk 531,
Six blades 533 are provided radially from the outer periphery of the boss 532 at a central angle of about 60 °. Each of these blades 53
The shape of 3 is a pentagon in which one apex of the rectangle is obliquely cut off. The obliquely cut portion of the blade plate 533 is covered and fixed by a slanted annular plate body 534 (corresponding to the peripheral wall of a flat truncated cone). Also a disk
Also on the back surface of 531, six blade plates 535, 535,..., 535 are provided at positions corresponding to the blade plate 533 on the front surface. This slat
The shape of 535 is a pentagon in which one apex angle is obliquely cut off as in the case of the wing plate 533 on the surface, but its length is shortened. Has not reached. The oblique sides of these blades 535,..., 535 are covered with an annular plate 536.

Example 2 Mixing method of the present invention In the mixing apparatus of the present invention shown in FIG.
A liquid is supplied from a liquid supply port 11 at a lower portion of the cylinder 1 and the liquid is supplied to the first
Through the upper opening 321 and the check valve 322 of the central cylinder 32 provided in the partition 2 corresponding to the bottom plate of the mixing chamber 3, which is a chamber,
The inside of the mixing chamber 3 is raised while being stirred by the stirring blade 53,
Next, similarly, the inside of the mixing chamber 3, which is the second chamber, is raised. On the other hand, another substance to be mixed with the first liquid from the intermediate supply port 13 below the mixing chamber 3 as the second chamber,
For example, a suspension obtained by suspending a granular material in a second liquid,
Liquid or gas is supplied. The other substance is mixed with the first liquid in the mixing chamber 3 which is the second chamber to form a mixture (hereinafter sometimes referred to as a first mixture).

The first mixture passes through the check valve 422 of the central cylinder 42 of the partition 2 which is the bottom plate of the aging chamber 4 which is the third chamber immediately above the mixing chamber 3 which is the second chamber. 4 can be raised. In the aging chamber 4, the first mixed solution is aged to complete the mixing, while the first mixed solution is weakly stirred by the stirring blade 54 in order to prevent layer separation and / or sedimentation of particles. Is done. The first mixture is placed in the mixing chamber 3
Partition 2 at the top of the chamber (also the bottom plate of the fourth chamber, the mixing chamber)
And the check valve 322 of the central cylinder 32 of the bulkhead 2
, And is supplied to the mixing chamber 3 which is the fourth chamber immediately above.

In the mixing chamber 3 which is the fourth chamber, another substance to be mixed with the first mixture is supplied from the intermediate supply port 13. This other substance is mixed with the first mixture while being stirred by the stirring blade 53, and is mixed with the first mixture (hereinafter referred to as a second mixture).
May be written). Similarly, the second mixture is sequentially passed through the aging chamber 4 as the fifth chamber, the mixing chamber 3 as the sixth chamber, and the aging chamber 4 as the seventh chamber, during which another mixture to be mixed is optionally formed. Are sequentially mixed with each other, and the mixture is allowed to reach the uppermost mixture storage section 14 of the cylindrical body 1. In the mixture storage section 14, when the mixture contains a gas, the gas is separated from the mixture, and the separated gas is
The gas is discharged from the gas discharge port 16 at the top of the cylinder 1. On the other hand, the mixture from which the gas has been separated is discharged from the mixture outlet 15. After mixing is completed, the contents of cylinder 1
The liquid is discharged from the liquid outlet 12 at the bottom of 1.

The upper openings 321 and 421 of the central cylindrical bodies 32 and 42 of the mixing chamber 3 and the aging chamber 4 in the mixing apparatus of the present invention.
The check valves 322 and 422 provided with the openings are pushed up and opened by the liquid when the liquid to be mixed or the mixture is continuously raised in the cylinder 1. On the other hand, if the liquid is intermittently raised in the cylindrical body 1 and / or if a gas is used as the mixture, a space is formed in the upper part of each chamber. The check valve in the upper (directly above) chamber which is in contact with the chamber in which is formed is closed, preventing the liquid in said chamber from flowing back into the chamber immediately below that chamber.

Example 3 A stirring blade having a partial stirrer and a partial stirrer used in the mixing chamber of the mixing apparatus of the present invention. (1) A stirring blade in which a plurality of partial stirrers are radially mounted on a support substantially orthogonal to a stirring axis. FIG. 3 shows a perspective view of the stirring blade. That is, the stirring blade 6
A disk 61 substantially perpendicular to the stirring shaft 5 is used as a support. On both surfaces of the disk 61, four sets of two sets of partial stirrers 62 and 63 arranged in parallel with each other have a central angle of about one. It is mounted radially at 90 °. The details of the partial agitators 62 and 63 are shown in FIGS. 4 to 8 described later. In addition, the tip of the circumferential side (outside) of the partial stirrers arranged in parallel with each other is beveled, and at this tip, the tip (leading end) which is advanced when the stirring blade is rotated.
A more agitating shaft than the tip (the trailing edge) 632 where the 621 is moved backward
It has been moved away from 5.

(2) Partial stirrer (a) FIG. 4 shows a partial stirrer in which two torsion plates are incorporated as an internal structure in a square cylinder having a square cross section perpendicular to the long axis direction. 1 shows a vessel, and a and b are a side view and a longitudinal sectional view, respectively. This partial stirrer 60
Two torsion plates 602 and 603 are built in the square tube 601 and are contacted with each other so that the angle between the sides 6022 and 6031 that are in contact with each other is approximately 90 °. They are arranged in series. These two twisted plates 60
2,603 has a twist angle of about 90 °, and the twisting directions of the twisted plates 602,603 are opposite to each other. These twisted plates 602,
603 is obtained by twisting a rectangular plate around the long axis, and the width (length of the long side) and the length are respectively １ ／ of the diagonal length of the rectangular cylinder and お よ び of the total length of the rectangular cylinder. Almost equal.

(B) FIG. 5 shows a partial stirrer in which two bent plates are incorporated as an internal structure in a rectangular cylinder, and a, b and c are horizontal sectional views, respectively. It is a front view in which the side wall of the cylindrical body of the partial stirrer was removed, and a perspective view of a bent plate as an internal structure of the partial stirrer. This partial stirrer 70 is provided in a rectangular tube 701 having a rectangular opening shape.
The folding plates 702 and 703 are built in. Folded plate 70
2,703 is a rectangular flat plate with a folding curve 7021,7031.
It is bent once. Thus, these two bent plates 702, 703 have their respective peripheral portions 7022, 7032 brought into contact with each other and arranged in the opposite directions to each other, and are built in the rectangular tube 701 circumscribed therewith. ing. The long axes of the two bent plates 702 and 703 are substantially parallel to the long axes of the rectangular cylinder 701, and are arranged in parallel with each other. The bent curve 7021 of the one bent plate 702 and the bent curve 7031 of the other bent plate 703 are in contact with the inner surfaces of the lower surface and the upper surface of the rectangular cylinder 701, respectively. The folding curves 7021 and 7031
May be provided between each of them and the inner surfaces of the lower surface and the upper surface of the rectangular tube 701.

(C) FIG. 6 is a partially cutaway perspective view of a partial stirrer in which two flat plates are incorporated as an internal structure in a rectangular cylinder. The partial stirrer 80 includes two rectangular flat plates 801.
And 802 have their long sides 8011 and 8021 contacted and crossed at approximately the center thereof, and are incorporated as internal structures in a rectangular tube 803 circumscribing them.

(D) FIG. 7 is a partially cut-away perspective view of a partial stirrer in which a rectangular column-shaped net is incorporated as an internal structure in a rectangular cylinder. In the partial stirrer 90, a wire mesh 902 rounded into a prismatic shape has its long axis aligned with the long axis of the square tube 901 in the square tube 901, and is incorporated as an internal structure.

(E) FIG. 8 shows a partial stirrer in which three rectangular nets having the same shape as the cross section perpendicular to the long axis direction of the rectangular cylinder are built in the rectangular cylinder as an internal structure. 3 is a partially cutaway perspective view of FIG. The partial stirrer 100 includes three square nets 1002, 1002, 1002 having the same shape as the cross section perpendicular to the long axis direction of the square tube 1001 at intervals in the square tube 1001. It is orthogonal to the long axis of the cylinder 1001 and is incorporated as an internal structure.

[0039]

EFFECTS OF THE INVENTION The mixing apparatus and the mixing method of the present invention are disadvantageous in the reaction and neutralization by mixing using a conventional tank type multi-stage stirring tank type reaction apparatus and neutralization apparatus as a mixing apparatus, and mixing using these mixing apparatuses. Not only maintain the advantages of each other, but also these advantages are further promoted, the structure is simple, the installation area is relatively small compared to the throughput, the number of agitators is small, and the pump is Since it is unnecessary, power can be saved, a high mixing ratio can be obtained, and the range of application can be expanded.

[Brief description of the drawings]

FIG. 1 shows the principle of a typical embodiment of the mixing device of the present invention, and is a longitudinal sectional end view of a typical example of the mixing device of the present invention.

FIG. 2 shows a stirring blade having a flat blade disk, which is a typical example of a stirring blade provided in a mixing chamber 3 of the mixing apparatus of the present invention, wherein a is a plan view of a stirring blade 53 having a flat blade disk; FIG. 2B is an end view of the AA cut portion of the stirring blade having the flat blade disk shown in FIG.

FIG. 3 is a perspective view of a stirring vane in which a plurality of partial stirrers are radially mounted on a support substantially orthogonal to a stirring shaft.

FIG. 4 shows a partial stirrer in which two twisted plates twisted at 90 ° are embedded as an internal structure in a rectangular cylinder, and a and b are a side view and a vertical cross section, respectively. FIG.

FIG. 5 shows a partial stirrer in which two bent plates are incorporated as an internal structure in a rectangular cylinder, wherein a, b and c are horizontal sectional views, respectively, and the cylinder of this partial stirrer. It is a front view with the side wall of the body removed, and a perspective view of a bent plate that is an internal structure of the partial stirrer.

FIG. 6 is a partially cutaway perspective view of a partial stirrer in which two flat plates are incorporated as an internal structure in a rectangular cylinder.

FIG. 7 is a partially cutaway perspective view of a partial stirrer in which a net that is rounded into a prismatic shape is incorporated as an internal structure in a rectangular cylinder.

FIG. 8 is a partially cutaway perspective view of a partial stirrer in which three square nets are incorporated as an internal structure in a rectangular cylinder.

[Explanation of symbols]

 1 Cylinder 11 Liquid supply port 12 Liquid discharge port 13 Intermediate supply port 14 Mixture storage section 15 Mixture discharge port 16 Gas discharge port 2 Partition wall 3 Mixing chamber 31 Opening 32 Central cylindrical body 321 Upper opening 322 Check valve 4 Maturation chamber 41 Opening 42 Central cylinder 421 Upper opening 422 Check valve 5 Stirring shaft 53 Stirrer blade with flat blade disk 531 Disk 532 Boss 533 Blade plate 534 Annular plate 535 Blade plate 536 Annular plate 54 Stirrer blade 541 Flat blade 6 Stirrer blade 61 Disk 62 Partial stirrer 621 Leading end 63 Partial stirrer 632 Trailing end 60 Partial stirrer 601 Cylindrical 602 Twisted plate 6022 Side 603 Twisted plate 6031 Side 70 Partial stirrer 701 Square cylinder 702 Bending plate 7021 Folding curve 7022 703 Folded plate 7031 Folded curve 7032 Peripheral 80 Partial stirrer 801 flat plate 8011 long side 802 flat plate 8021 long side 803 square tube 90 partial stirrer 901 square tube 902 prismatic net 100 partial stirrer 1001 square tube 1002 square Net

Claims (16)

(57) [Claims] A plurality of mixing chambers separated by partition walls are provided in a cylinder provided with a liquid supply port at a lower portion and a liquid mixture discharge port at an upper portion, and a bottom plate of the mixing chamber is provided at the center. An opening is drilled, and a central cylinder having an upper opening is provided around the periphery of the opening, and is protruded upward.
A stirring shaft is provided to penetrate each of the partition walls and the center of the central cylindrical body, and the mixing chamber is provided with a stirring blade attached to the stirring shaft and an intermediate supply port at a lower portion thereof. A mixing device, characterized in that: 2. The mixing device according to claim 1, wherein a check valve is provided at an upper opening of the center cylinder of the mixing chamber. 3. The mixing device according to claim 1, wherein a liquid outlet is provided at a bottom of the cylindrical body. 4. The mixing device according to claim 1, wherein a mixture storage portion and a gas discharge port are provided at an upper portion and a top portion of the cylindrical body, respectively. 5. The mixing apparatus according to claim 1, wherein an aging chamber is provided above the mixing chamber. 6. The aging chamber is provided with an opening in the center of a bottom plate thereof, and a peripheral portion of the opening is provided with a central cylindrical body projecting upward and having an upper opening. 2. The mixing device according to claim 1. 7. The mixing device according to claim 1, wherein the central cylinder provided on the partition is a hollow cylinder having no bottom, a truncated cone, a hemisphere, a semiellipsoid or an ellipsoid. 8. The mixing device according to claim 1, wherein an outer diameter of the stirring blade is equal to or larger than a diameter of an upper opening of a central cylinder provided on a bottom plate of the mixing chamber. 9. The diameter of an upper opening of a central cylinder provided on a bottom plate of a mixing chamber is not more than の of an inner diameter of the cylinder.
9. The mixing device according to any one of claims 1 to 8. 10. The outer diameter of the stirring blade is 1/3 of the inner diameter of the cylindrical body.
The mixing device according to any one of claims 1 to 9, which is as described above. 11. The stirring blade according to claim 1, wherein the stirring blade is a stirring blade in which a partial stirrer is mounted on a support.
Item 7. The mixing device according to Item 1. 12. The mixing device according to claim 1, wherein the stirring blade is a stirring blade having a flat blade disk turbine. 13. The mixing device according to claim 1, wherein a jacket for heating or cooling is provided on an outer peripheral surface of the cylindrical body. 14. The mixing apparatus according to claim 1, wherein the liquid is supplied from a liquid supply port, and the liquid is sequentially raised at an upper opening of a central cylinder provided on a bottom plate of the mixing chamber and the mixing chamber.
On the other hand, a liquid and / or a granular material different from the liquid supplied from the liquid supply port is supplied to the mixing chamber from the intermediate supply port, and the liquid and / or the granular material supplied from the intermediate supply port is mixed with the liquid and / or the granular material. The liquid that was raised in the cylinder and supplied to the mixing chamber was stirred and mixed in the mixing chamber, and the resulting mixture was sequentially raised in each of the mixing chambers. Mixing method characterized by discharging to 15. The mixing apparatus according to claim 4, wherein the liquid is supplied from a liquid supply port, and the liquid is sequentially raised at an upper opening of a central cylinder provided on a bottom plate of the mixing chamber and the mixing chamber.
On the other hand, a gas and a liquid and / or granular material different from the liquid supplied from the liquid supply port are supplied to the mixing chamber from the intermediate supply port, and the gas and the liquid and / or the liquid supplied from the intermediate supply port are supplied. The powder and the granular material and the liquid raised in the cylinder and supplied to the mixing chamber are agitated and mixed in the mixing chamber, and the resulting mixture is raised in each of the mixing chambers, and the mixture is stored in the mixture storage section at the top of the cylinder. And separating the gas in the mixture storage section, and discharging the liquid mixture and the gas to the outside of the cylinder from the liquid mixture discharge port at the top of the cylinder and the gas discharge port at the top of the cylinder, respectively. Law. 16. The mixing apparatus according to claim 5, wherein the mixture obtained in the mixing chamber is sent to a ripening chamber above the mixing chamber, and the mixing is completed in the ripening chamber.
16. The mixing method according to 4 or 15.