JP2003181256A - Static type mixer and component for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a static type mixer which exhibits high mixing performance without causing clogging even when a fluid containing a solid material is mixed and can be manufactured at a low cost, and to provide a component for the same. <P>SOLUTION: The component 10 for the static type mixer is constituted of a tubular main body 14 whose base material is a ceramic, a resistive element 16 whose both ends are fixed in the diameter direction of the inner wall of the main body 14, a first engaging part 20 formed at one end face of the tubular main body 14, and a second engaging part 22 which is formed at the other end face of the main body 14 and engages with the first engaging part 20. The static type mixer 26 has many components 10 for the static type mixer in a pipe 24, in which the first engaging part 20 of each component for the static-type mixer is engaged with the second engaging part 22 of an adjacent component for the static-type mixer. It becomes possible to generate turbulent flow and turning flow in the fluid flowing through the static-type mixer 26 by arranging the resistive elements 16 at different positions against the flowing direction of the fluid when the first engaging part 20 is engaged with the second engaging part 22. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a static mixer that stirs and mixes a fluid by a resistor installed in a flow path, and a static mixer part used in the static mixer.

[0002]

2. Description of the Related Art As a method of stirring and mixing a fluid when passing the fluid through a pipe, a static mixer having a static resistor inside the pipe and stirring and mixing the fluid by the resistor is used. A movable stirrer having a movable means such as a bond blade is known. The static mixer has excellent features such as low cost, labor saving of maintenance and management, downsizing of the device, and continuous production process as compared with the movable mixer. Further, the static mixer is widely used in various industrial fields because it can be applied to homogenization, gas absorption, direct heating, heat exchange, etc. in addition to mixing.

[0003]

However, in the conventional static mixer, when the fluid contains fibrous or particulate solids, problems such as clogging and troublesome maintenance occur. did. This hinders the bleaching process of paper mills, the exposure process of surimi in marine products processing,
Alternatively, it was difficult to apply it to the aeration process in a sewage treatment plant. Further, even a fluid containing a fibrous or particulate solid matter causes clogging, so that it is more difficult to mix other particles. Furthermore, since the conventional static mixer is made of metal or the like, there is a problem that the price becomes expensive.

Therefore, the present invention solves the problem of the conventional static mixer as described above. By obtaining a higher mixing performance than the conventional one, the clogging of a fluid containing fibrous or particulate solid matter is achieved. It is an object of the present invention to provide a static mixer and a component for a static mixer which can eliminate the occurrence of clogging even if another particle is mixed and can reduce the manufacturing cost. .

[0005]

A static mixer part according to the present invention is made of ceramic as a raw material and has a cylindrical main body having a space for passing a fluid therein, and is fixed to an inner wall of the main body. And a resistor that acts as a resistance to the passage of fluid at
A first engaging portion having a large number of concaves and convexes formed on one end surface of the tubular body of the main body, and a large number of concaves and convexes formed on the other end surface of the main body to engage with the first engaging portion And a second engaging portion.

The static mixer according to the present invention has a tubular main body made of ceramic as a material and having a space for passing the fluid therein, and is fixed to the inner wall of the main body. A resistor that serves as a resistance to passage, a first engaging portion having a large number of concavities and convexities formed on one cylindrical end surface of the main body, and a large number of concavities and convexities formed on the other end surface of the main body, A large number of static mixer parts, each of which includes an engaging part and a second engaging part that engages with each other, are built in, and the first engaging part and the second engaging part are engaged with each other to provide the large number of static type parts. The mixer parts are connected to each other.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Next, the present invention will be described with reference to the drawings. 1 is a perspective view showing an embodiment of a static mixer component according to the present invention, FIG. 2 is a cross-sectional view of the static mixer component of FIG. 1, and FIG. 3 is a cross-sectional view taken along line 2A-A of FIG. The static mixer component 10 is made of ceramic material and is laid across a tubular main body 14 having a through space 12 formed therein, and both ends of the inner wall of the tubular main body 14 fixed in the radial direction. And a resistor 16. The resistor 16 is preferably formed integrally with the body 14. Although any type of ceramic may be used, carbon ceramics are preferable from the viewpoint of absorbing the odor of liquid. In FIGS. 1 to 3, the resistor 16 fixed to the inner wall of the main body 14 is a single plate-shaped member. However, the resistor 16 has three shapes that connect the resistor 16 to each other at the axial center position, or a cross shape. It may be one of the above. Regardless of the shape of the resistor 16 provided in the space 12 of the main body 14, the space 12 of the main body 14
Allows fluid to pass axially therethrough.

A plurality of (four in the figure) resistance holes 18 are formed in the cylindrical main body 14 at equal intervals on the circumference.
The position of the resistance hole 18 is preferably provided substantially at the center of the axial length of the main body 14, but is not limited to this position. A corrugated first engaging portion 20 is formed on one end surface (upper edge) of the tubular main body 14, and the other end surface (lower edge) of the tubular main body 14 is fitted with the first engaging portion 20. A second engaging portion 22 having a corrugated shape is formed. Although the first engaging portion 20 and the second engaging portion 22 have a corrugated shape, the shape is not limited to a corrugated shape as long as they can engage with each other such as unevenness. Waveforms (unevenness) formed on the first engaging portion 20 and the second engaging portion 22
The number of waveforms is eight (8 pairs) in FIGS. 1 to 3, but the number of waveforms (irregularities) is not limited to this. The installation position of the resistor 16 is formed in the vicinity of the peripheral edge of the resistance hole 18 and slightly closer to one of the first engaging portions 20.
The cross-sectional shape of the resistor 16 is preferably an arc shape along the peripheral edge of the resistance hole 18 and is thick, but is not limited to this.

FIG. 4 is a partial sectional front view showing a static mixer using the static mixer parts shown in FIGS. A plurality of static mixer parts 10 are sequentially connected so that the first engaging part 20 and the second engaging part 22 are engaged with each other, and the connected parts are built in the pipe 24. When a large number of static mixer parts 10 are sequentially connected, the angles of the static mixer parts 10 that are connected adjacent to each other are gradually shifted. For example, as shown in FIGS. 1 to 3, when the number of waveforms is eight, shifting one waveform shifts the static mixer components 10 from each other at an angle of 45 degrees. In addition,
If the number of corrugations formed on the static mixer component 10 is 12, and the static mixer components 10 are connected while shifting one waveform, the position of the resistor 16 is sequentially set at an angle of 30 degrees. It will shift.

As described above, a large number of static mixer parts 1 with the first engaging portion 20 and the second engaging portion 22 engaged with each other.
0 is connected and it is built in the pipe 24. At this time, the angles of the static mixer parts 10 that are connected adjacent to each other are gradually shifted. As a result, a static mixer 26 (FIGS. 4 and 5) in which a large number of static mixer parts 10 are arranged with the resistor 16 being displaced inside the pipe 24 can be obtained.

In FIG. 5 (viewed from the direction B in FIG. 4), the position of the resistor 16 is shifted in the circumferential direction of the pipe 24 by 45 degrees in the clockwise direction for each static mixer part 10. The status is shown. The position (a) of the resistor 16 is located closest to the front, and the positions (b), (c), and (d) are sequentially arranged toward the back. In the state of FIG. 5, since the resistor 16 exists at any position in the traveling direction of the fluid, the fluid does not flow linearly in the static mixer 26. That is, when the fluid is introduced into the static mixer 26, the fluid is initially in the resistor 16 (a) of the static mixer component 10.
Is collided with and dispersed to the left and right. This dispersed fluid is
It collides with the resistor 16 (b) of the next static mixer component 10 and is dispersed to the left and right, and then collides with the resistor 16 (c) of the next static mixer component 10 further. in this way,
Since the fluid introduced into the static mixer 26 sequentially collides with the resistor 16 of each static mixer component 10,
Turbulence is generated inside the static mixer 26, and as a result, the fluid flowing in the static mixer 26 is well mixed and stirred. Further, by forming the resistance hole 18 in the main body 14 of the static mixer part 10, the static mixer 26
Further turbulence can be generated in the fluid flowing therein.

In addition, the resistors 16 arranged in the static mixer 26 are sequentially arranged at positions displaced spirally with respect to the direction of fluid flow. As a result, the static mixers 26 are separated by the resistors 16 arranged in a spiral manner.
A swirling flow centered on the center line can be generated in the fluid flowing therein, and mixing and stirring of the fluid can be further promoted.

Next, a mixing device using the static mixer 26 will be described with reference to FIG. A fluid introduction passage 30 is provided at the upper portion of the tank 28 formed of a stainless material.
And a faucet 32 as a take-out means is provided at the bottom of the tank 28. On the side surface of the tank 28, a connecting pipe 34 that connects the upper portion and the lower portion of the tank 28 is provided. A circulating pump 36 is provided in the middle of the connecting pipe 34, and a static mixer 26 is provided at a position downstream of the circulating pump 36. Further, an introduction pipe 40 communicating with a particle tank 38 is connected to a communication pipe 34 between the circulation pump 36 and the static mixer 26. An opening / closing valve 42 is provided in the middle of the introduction pipe 40.

In FIG. 6, the liquid is introduced into the tank 28 from the fluid introduction passage 30 to fill the tank 28 with the liquid. The liquid that is put into the tank 28 contains a fibrous or particulate solid substance and needs to be mixed and stirred. After the tank 28 is filled with the liquid, the circulation pump 36 is activated to allow the liquid in the upper portion of the tank 28 to pass through the static mixer 26 through the communication pipe 34 and return to the lower portion of the tank 28. At this time, the fluid containing the fibrous or particle-like solid matter is mixed with the static mixer 26.
The mixture is thoroughly mixed and stirred by passing through. The fluid that has been sufficiently mixed and stirred is collected in the lower portion of the tank 28, and the liquid that has not been mixed and stirred is pushed upward in the tank 28. By operating the circulation pump 36 for a predetermined time, all of the liquid filled in the tank 28 is sufficiently mixed and stirred.

It is also possible to mix other particles (or other solid-containing fluid) with the fluid flowing to the static mixer 26. That is, the circulation pump 36 is operated and the opening / closing valve 42 is opened, and the particles are introduced from the particle tank 38 through the introduction pipe 40 into the communication pipe 34 upstream of the static mixer 26. This allows the static mixer 26
In, the particles can be evenly mixed with the fluid.

Thus, the static mixer 2 according to the present invention
In No. 6, a turbulent flow and a swirling flow are generated in the fluid flowing inside, so that even a liquid in which a large amount of fibrous or particulate fixed matter is mixed can be mixed and stirred without causing clogging. The static mixer 26 according to the present invention was actually subjected to a gas-liquid mixing process of waste oil and air for the purpose of purifying the waste oil, and mixing was performed without causing clogging,
A high level of gas-liquid mixing could be achieved. From this experimental result, it was confirmed that liquid-liquid mixing and gas-liquid mixing were possible with almost no problem.

[0017]

The static mixer according to the present invention can generate a larger turbulent flow and a larger swirl flow in the fluid flowing inside as compared with the conventional one, and the fibrous or particulate solid matter. It is possible to obtain high mixing performance without causing clogging even when a fluid containing is flowed. Since it has a high mixing performance, it becomes possible to add and mix fluid and other particles to be mixed. Since the static mixer part according to the present invention is made of ceramic, it does not cause corrosion or rust even with strong acid or strong alkali, and has a wide range of applications. Further, since it is made of ceramic, the cost is very low. Further, since the concave and convex engaging portions are formed on both end faces of the tubular shape, it is possible to easily and firmly connect and fix the parts for static mixers in the pipe.

[Brief description of drawings]

FIG. 1 is a perspective view showing one embodiment of a static mixer component according to the present invention.

2 is a vertical cross-sectional view of the static mixer component of FIG. 1. FIG.

3 is a cross-sectional view taken along the line AA of FIG.

4 is a partial cross-sectional front view of a static mixer using the static mixer component of FIG. 1. FIG.

5 is a view on arrow B in FIG. 4. FIG.

FIG. 6 is a schematic view of a liquid mixing apparatus using the static mixer of FIG.

[Explanation of symbols]

10 Static mixer parts 12 spaces 14 body 16 resistor 18 holes 20 First engaging part 22 Second engagement part 24 pipes 26 Static mixer

Claims (5)

[Claims] 1. A cylindrical main body made of ceramics and having a space for allowing a fluid to pass therethrough, a resistor fixed to an inner wall of the main body and serving as a resistance for the passage of a fluid, and a main body of the main body. A first engaging portion having a large number of concavities and convexities formed on one end surface of a tubular shape, and a second engaging portion for forming a large number of concavities and convexities on the other end surface of the main body and engaging with the first engagement portion. A static mixer part characterized by comprising a joint part. 2. A component for a static mixer according to claim 1, wherein a plurality of holes are formed in a side surface of the main body. 3. A tubular main body made of ceramic as a material and having a space for allowing a fluid to pass inside, and a resistor fixed to the inner wall of the main body and serving as a resistance to the passage of the fluid. A first engaging portion having a large number of concaves and convexes formed on one cylindrical end surface of the main body and a large number of concave and convex portions on the other end surface of the main body, the first engaging portion engaging with the first engaging portion; To incorporate a large number of static mixer parts including two engaging parts, and to connect the plurality of static mixer parts by engaging the first engaging part and the second engaging part. Static mixer characterized by. 4. The stationary unit according to claim 3, wherein, in a state in which the plurality of static mixer components are connected to each other, positions of the resistors are arranged in the circumferential direction of the pipe while sequentially shifting their angles. Type mixer. 5. The static mixer according to claim 3, wherein a plurality of holes are formed in a side surface of the main body.