JP5006167B2 - Stirrer - Google Patents

Description

  The present invention relates to a stirrer that stirs a plurality of types of fluids, and more particularly to a stirrer that can continuously process muddy water with a simple facility using a flocculant.

Conventionally, as a method for treating turbid water in rivers, lakes, marine areas, dams, etc., a polymer polymer dissolved in a turbid water with a dissolving device is added, and it is stirred and reacted in a slurry tank. Therefore, each tank reaches several tens to several hundreds of square meters, so that it becomes a very large facility, and various problems have occurred in terms of installation and cost.
As a turbid water treatment device, for example, as shown in Patent Document 1, turbid water is pumped up by pump, polyaluminum chloride (PAC) is introduced from the inlet, and then stirred by a line mixer, and the turbid water after stirring is stored in a mixed turbid water tank. Further, after discharging into the muddy water tube, the polymer flocculant is charged from the polymer flocculant inlet. As a result, the turbid water is discharged from the discharge port at the bottom of the coagulation tank and hits the flow blocking plate, thereby generating turbulent flow in the coagulation tank and forming a floc. An apparatus having a configuration in which the formed flocs are prevented from rising by fixed wings and the flocs are connected to each other to form a high-density floc is known.
JP-A-7-714

However, the turbid water treatment device described in Patent Document 1 has a problem that the two turbid water tanks and the sedimentation tank are necessary, and the size of the turbid water treatment apparatus is increased. There is a problem that a constant floc cannot be formed because a reaction time sufficient for stirring and coagulation sedimentation cannot be obtained.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a stirring device that can reliably stir, obtain a sufficient time for the reaction, and can be downsized.

In order to solve the above-mentioned problem, the invention of claim 1 includes a plurality of static mixers in which a plurality of types of fluids are flowed and arranged in series with each other;
Connected between each static mixer, a hose or a retention tank for retaining the plural kinds of fluids for a predetermined time; and
An inflow tank into which the mixed fluid mixed by flowing the plurality of types of fluids through the static mixer and the hose or the retention tank is provided ;
The static mixer includes a tube and a number of elements provided in the tube and twisted at a predetermined angle by a plate-like body,
Among the plurality of static mixers, the upstream static mixer has a shorter pitch of the elements than the downstream static mixer .

  According to the first aspect of the present invention, a plurality of static mixers arranged in series with each other, a hose or a retention tank that is connected between the static mixers and retains a plurality of types of fluid for a predetermined time, and a mixed fluid is introduced. Therefore, it is possible to stir by flowing a plurality of types of fluids through the static mixer, and it is possible to reduce the size because a drive source or the like is required. In addition, by appropriately adjusting the stirring intensity of each static mixer, even when fluids having different dissolution rates are reacted, they can be stirred and reacted in multiple stages, and thus can be reacted reliably. In addition, since a plurality of types of fluids stirred by a static mixer can be retained for a predetermined time by flowing in a hose or a retention tank, a sufficient reaction time can be ensured. As a result, a plurality of stirrings and long-time stirrings can be performed at intervals.

The static mixer includes a pipe and a large number of elements. Among the plurality of static mixers, the upstream static mixer has a shorter element pitch than the downstream static mixer, so the upstream side is more downstream than the downstream side. Also, the stirring strength becomes stronger. Therefore, good agitation can be performed for the reaction of the fluid. For example, when a flocculant is mixed with turbid water and reacted, optimal stirring for formation of floc can be performed. That is, the flocs can be grown slowly and large without breaking the formed flocs by stirring at a stretch on the upstream side and then gently stirring on the downstream side.

Invention of Claim 2 is the stirring apparatus of Claim 1 ,
A plurality of detachable elements having different twist angles are provided in the tube in combination with each other.

According to the invention of claim 2 , since the twist angle is different and a large number of detachable elements are combined in the pipe, the stirring strength can be increased by freely combining the elements having different twist angles. It can be changed freely. Therefore, it is possible to make fine settings such as gradually decreasing the stirring intensity. In addition, complicated bending and welding are not required, and production is facilitated. Furthermore, since each element is small, handling is easy, and transportation, cleaning during overhaul, and the like can be easily performed. Moreover, since it consists of a combination of many elements, it can be installed inside a meandering hose, etc., and a more compact static mixer can be used.

Invention of Claim 3 is the stirring apparatus of Claim 1 or 2 ,
A convection means for generating convection in the mixed fluid is provided immediately before the upstream side of the inflow tank.

According to the invention of claim 3, the mixed fluid can be more reliably stirred by the generated convection. In particular, when a flocculant is mixed with turbid water, flocs are further combined by convection, and larger flocs can be formed. Moreover, the strong flow can be buffered by the convection means, and the rolled up flock can be calmed down. As a result, a very dense floc can be formed and the floc can be settled and separated in a short time, so that the inflow tank can be further miniaturized.

Invention of Claim 4 is the stirring apparatus as described in any one of Claims 1-3 ,
The plurality of fluids include turbid water and a flocculant.

According to the invention of claim 4 , since the plurality of fluids include turbid water and a flocculant, the flocs that are turbid source components are precipitated from the turbid water by mixing the flocculant with the turbid water to obtain a highly transparent treated water. It is effective for muddy water treatment.

  According to the present invention, the stirring intensity of each static mixer can be appropriately adjusted to ensure stirring, and a sufficient reaction time can be secured. In addition, since a plurality of types of fluids can be agitated without a driving source, the size can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view of the stirring device 100.
In this embodiment, as an example of a stirring device, a stirrer 100 is described in which flocs are settled by aggregating and aggregating a flocculant in turbid water to treat the turbid water. However, the present invention can be applied to any fluid, such as other liquids, powders, and gases.
The stirrer 100 includes a raw water tank 1 in which muddy water is stored, a pump (not shown) that pulls up muddy water from the raw water tank 1, a drug loading device 2 that loads a drug into the muddy water pulled up by the pump, and muddy water and a drug. The first to third static mixers 31, 32, 33 arranged in series with each other, the first to third hoses 41, 42, 43 connected between the static mixers 31-33, And an inflow tank 5 into which the later mixed liquid is introduced.

2 (a) is a side view of the medicine injection device 2, FIG. 2 (b) is a top view of the medicine injection device 2, and FIG. 2 (c) is a front view of the medicine injection device 2.
The medicine charging device 2 is filled with a medicine, and is configured to feed the medicine filled by rotating a built-in screw 21 by a motor 22. A brush 23 is attached to the tip of the screw 21, and the medicine gradually drops by the rotation of the screw 21 so that the medicine rotated by the screw 21 by the brush 23 does not fall at once. Yes. Further, the amount of medicine to be charged can be changed by adjusting the rotation speed of the motor 22 with an attached control panel (not shown). Examples of the drug include sulfuric acid band, PAC, and other nonionic polymers such as polyacrylamide that are generally commercially available, and other anionic and cationic polymer flocculants. Examples of muddy water include polluted water such as rivers, lakes, seas, and dams.

3A is a top view of the first static mixer 31, FIG. 3B is a side view of the first static mixer 31, and FIG. 3C is a front view of the first static mixer 31. 3 (d) is a side sectional view of the first static mixer 31, FIG. 4 is a perspective view of the elements 312a to 312e, and FIG. 5 is a perspective view in a state where the elements 312a to 312e are combined.
The 1st-3rd static mixers 31-33 are tube type mixers which do not have a drive part. The first static mixer 31 includes a cylindrical tube 311 and a number of elements 312a, 312b, 312c, 312d, and 312e installed in the tube 311. A large number of elements 312a to 312e are formed by twisting a rectangular plate-like body having substantially the same size at both ends in the longitudinal direction at a predetermined angle. Here, as shown in FIGS. 4 and 5, the element 312a has both ends in the longitudinal direction and one end is twisted 45 degrees in either one of the left and right directions, and the element 312b is in the opposite direction to the element 312a. The element 312c is twisted 90 degrees in the opposite direction to the element 312b, the element 312d is twisted 180 degrees in the opposite direction to the element 312c, and the element 312e is twisted 180 degrees in the opposite direction to the element 312d. Rectangular cutouts 313 and 313 for connecting to other elements are formed at both ends of each element 312a to 312e. By engaging these cutouts 313 and 313 with each other, a large number of elements 312a are formed. -312e are connected and attached in the pipe 311 in a connected state. Therefore, the muddy water and the chemicals that have flowed into the tube 311 are forcibly stirred and mixed by the elements 312a to 312e. Note that the combinations of the elements 312a to 312e shown in FIGS. 4 and 5 are examples, and are not limited to these combinations.
Further, although not shown, the second and third static mixers 32 and 33 are also cylindrical pipes like the first static mixer 31, and are pitched later than elements 312 a to 312 e of the first static mixer 31, which will be described later. Is composed of a large number of elements twisted at a predetermined angle.

The first to third static mixers 31 to 33 are arranged in series in the order of the first static mixer 31, the second static mixer 32, and the third static mixer 33 from the upstream side. Each of the static mixers 31 to 33 is provided in parallel in two rows, as shown in FIG. 3A, and has two branches for connecting to the hoses 41 to 43 described later at the end. Boxes 8, 8,... Are attached.
Further, although not shown, the elements 312 a to 312 e of the first static mixer 31 are shorter than the pitch of the elements of the second or third static mixers 32 and 33. The elements of the second static mixer 32 are shorter than the pitch of the elements of the third static mixer 33. The first static mixer 31, the second static mixer 32, and the third static mixer 33 are in this order. The stirring intensity is small.

As shown in FIG. 1, the first static mixers 31, 31 are installed so as to be inclined such that the downstream end is lower than the upstream end, and the downstream end of the first static mixer 31, 31. A first hose 41 meanders and is connected to the part via a bifurcated box 8. Further, the second static mixers 32, 32 are connected to the downstream end of the first hose 41 via the bifurcated box 8 so that the downstream ends thereof are inclined downward, A second hose 42 meanders and is connected to the downstream ends of the static mixers 32, 32 via a bifurcated box 8. A third static mixer 33, 33 is connected to the downstream end of the second hose 42 via the bifurcated box 8 so that the downstream end is inclined downward, and the second static mixer is connected. A third hose 43 meanders and is connected to the downstream ends of 32 and 32 via a bifurcated box 8.
Thus, the first static mixers 31, 31, the first hose 41, the second static mixers 32, 32, the second hose 42, the third static mixers 33, 33, and the third hose 43 are upstream. The mixed liquid flowing through the interior from the side toward the downstream side is inclined and connected in series so as to flow naturally. The second static mixers 32 and 32 are arranged below the first static mixers 31 and 31, and the third static mixers 33 and 33 are arranged below the second static mixers 32 and 32 in the vertical direction. Has been.

The 1st-3rd hose 41-43 retains the liquid mixture of the muddy water and chemical | medical agent which were stirred and mixed by each static mixer 31-33, and has ensured the reaction time of muddy water and a chemical | medical agent. That is, when the drug is an inorganic flocculant, several kinds of drugs are mixed in powder form, and the solubility in turbid water differs depending on the drug, so the mixed liquid is retained in the first to third hoses 41 to 43. As a result, stirring for a long time or several times of stirring can be performed at intervals, and as a result, formation of flocs can be promoted.
An inflow tank 5 is provided at the downstream end of the third hose 43.

FIG. 6 is a schematic side view of the inflow tank 5.
In the inflow tank 5, the mixed liquid of muddy water and medicine is introduced from the third hose 43, and the floc in the inflowed mixed liquid is settled and separated. The inflow tank 5 is configured such that the downstream end portion of the third hose 43 is inserted, and the inside is partitioned into first to third space portions 53, 54, 55 by two partition plates 51, 52. It has been. The partition plate 51 that partitions the first space portion 53 and the second space portion 54 is attached to the upper inner wall surface of the inflow tank 5 so as not to contact the bottom surface 5a. Therefore, the lower end portion of the partition plate 51 communicates with the bottom surface 5a, and the first space portion 53 and the second space portion 54 are interposed between the lower end portion of the partition plate 51 and the bottom surface 5a. Can be distributed. The partition plate 52 that partitions the second space portion 54 and the third space portion 55 is attached to the lower inner wall surface of the inflow tank 5 and is erected on the bottom surface 5a, and does not extend to the upper inner wall surface. . Therefore, the second space portion 54 and the third space portion 55 can circulate through the upper end portion of the partition plate 52.

The first space 53 is provided with convection means that generates convection and separates the floc from the mixed solution flowing from the third hose 43 by convection. Examples of the convection means include a bag-like one, and specifically, the flexible container pack 6 shown in FIG. 7 can be used.
7 (a) is a perspective view of the flexible container pack 6 with the lid 63 closed, FIG. 7 (b) is a perspective view of the flexible container pack 6 with the lid 63 open, and FIG. 8 (a) is a flexible container. FIG. 8B is a perspective view schematically showing the pack 6 except for the lid 63 portion, and FIG. 8B is a cross-sectional view taken along the cutting line VIII-VIII in FIG. c) is a top view of FIG.
The flexible container pack 6 has a well-known bag shape, and is attached with a lid 63 that can be closed by tying the upper opening with a string. Hand straps 64 and 64 are attached to the upper end portion of the flexible container pack 6 so as to be suspended. This flexible container pack 6 uses a wire (not shown) or the like in the inflow tank 5 so that one corner 61 of the four corners at the upper end is lowered downward with the lid 63 open. It is attached. As shown in FIG. 8, the treated water overflows after the floc has settled from the corner portion 61 whose upper end portion has been lowered. In addition, the third hose 43 is arranged so as to be inclined so that the mixed liquid flowing from the third hose 43 contacts the inner wall surface 62 of the flexible container pack 6 (the surface facing the partition plate 51). By arranging the third hose 43 in this way, convection is efficiently generated by the rotational energy of the mixed liquid that has flowed in.

  On the wall surface forming the third space portion 55, treated water after the floc is removed from the mixed solution flowing from the second space portion 54 through the upper end portion of the partition plate 52 is treated outside the inflow tank 5. And a floc discharge port 57 for discharging the floc settled in the third space 55 to the outside of the inflow tank 5. The treated water discharge port 56 is formed on the inner wall surface of the upper end portion that forms the third space portion 55 and is discharged in the form of an overflow. The flock discharge port 57 is formed on the inner wall surface of the lower end portion that forms the third space 55, and the flock is taken out by opening the discharge port 57.

Next, operation | movement of the stirring apparatus 100 which comprised the above-mentioned is demonstrated. FIG. 9 is a diagram illustrating an operation process of the stirring device 100.
First, when the pump is driven, muddy water is pulled up from the raw water tank 1 and flows into the first static mixer 31 (step S1). At this time, the medicine injection device 2 uses the negative pressure of the pump to inject the medicine into the first static mixer 31 (step S2). Then, when the turbid water and the drug flow in the first static mixer 31, a water flow is generated by the elements 312, 312, ..., and the drug is uniformly dispersed in the turbid water by natural flow. Thereafter, it flows into the first hose 41, where the reaction time between the turbid water and the drug is secured, and the muddy water and the drug react slowly to promote the formation of flocs.
Furthermore, the mixing strength of the turbid water and the medicine flows through the second static mixer 32, the second hose 42, the third static mixer 33, and the third hose 43, so that the stirring intensity is changed and a plurality of stirrings are performed. And reaction time is ensured (step S3).
Then, it discharges | emits in the flexible container pack 6 which is a convection means (step S4). When the liquid mixture flows into the flexible container pack 6, convection is generated by the rotational energy, and the floes are further coupled by the convection, and a larger floc is formed. Further, the mixed liquid passes through the settled flocs by convection, so that it becomes a filter agent and entangles the floating flocs, so that separation is promoted and settles in the flexible container pack 6 (step S5). Thereafter, the treated water after the floc settles to some extent overflows from the portion 61 of the upper end portion of the flexible container pack 6 that has been lowered and flows down, and passes between the lower end portion of the partition plate 51 and the bottom surface 5a. Then, it flows into the second space portion 54, overflows due to the water flow, and flows into the third space portion 55 through the upper end portion of the partition plate 52. The flow is also buffered by the partition plate 51 and the partition plate 52, and the formation and sedimentation of flocs are promoted. Further, the treated water is discharged to the outside from the treated water discharge port 56 (step S6), and the settled flock is discharged to the outside from the flock discharge port 57 (step S7).

As described above, according to the present embodiment, a plurality of static mixers 31 to 33 arranged in series with each other and connected between each of the static mixers 31 to 33, and a mixture of turbid water and a drug is retained for a predetermined time. Since the first to third hoses 41 to 43 and the inflow tank 5 into which the mixed liquid is introduced are provided, each of the static mixers 31 to 33 can be agitated by flowing turbid water and chemicals, and the drive source Therefore, the size can be reduced. In addition, by appropriately adjusting the stirring strength of each of the static mixers 31 to 33, even when drugs having different dissolution rates are reacted with each other, they can be stirred and reacted in multiple stages, and can be reacted reliably. Moreover, since the liquid mixture stirred by the static mixers 31 to 33 can be retained for a predetermined time by flowing through the first to third hoses 41 to 43, a sufficient reaction time can be ensured. As a result, a plurality of stirrings and long-time stirrings can be performed at intervals.
Each of the first to third static mixers 31 to 33 includes a pipe 311 and a number of elements 312a to 312e, and the pitch of the elements 312 and 312 of the static mixers 31 to 33 is long from the downstream side toward the upstream side. The stirring strength is stronger on the upstream side than on the downstream side. Therefore, when the flocculant is mixed with turbid water and allowed to react, it is possible to perform optimum stirring for floc formation. That is, the floc can be grown slowly and large without breaking the floc formed by stirring at a stretch on the upstream side and then gently stirring on the downstream side.
Moreover, in each pipe | tube 311 of the 1st-3rd static mixers 31-33, since a twist angle differs and many detachable elements 312a-312e are mutually combined and provided, a twist angle differs. By freely combining the elements 312a to 312e, the stirring intensity can be freely changed. Therefore, it is possible to make fine settings such as gradually decreasing the stirring intensity. In addition, complicated bending and welding are not required, and production is facilitated. Furthermore, since each of the elements 312a to 312e is small, handling is easy, and transportation, cleaning during overhaul, and the like can be easily performed.
Moreover, since the flexible container pack 6 which is a convection means is provided in the 1st space part 53 of the inflow tank 5, flocs further couple | bond together by the convection which generate | occur | produced when the liquid mixture flows in, and larger A floc can be formed. Further, the large floc settles in the flexible container pack 6, and there is no floc floating in the third space 55 on the downstream side of the inflow tank 5, and treated water with higher transparency can be obtained. Further, the flexible container pack 6 can buffer a strong flow and calm the rolled up flock. As a result, a very dense floc can be formed and the floc can be settled and separated in a short time, so that the inflow tank 5 can be further downsized.

[Modification]
FIG. 10 shows a modified example of the stirring device 100A and is an external perspective view.
A stirrer 100A shown in FIG. 10 does not include first to third static mixers 31 to 33 arranged vertically in the vertical direction as in the above stirrer 100, but first to third static mixers. 31A-33A and 1st-3rd hose 41A-43A are assembled | attached so that it may extend on a straight line to right and left. In the following, the same components will be denoted by the letter A and the description thereof will be omitted, and only different points will be described.
The stirrer 100A includes a raw water tank 1A, an air-jet pump (MJP pump) P1, an air-jet pump pumping pump P2, a muddy water hose H, a chemical injection device 2A, and first to third statics. Two units 7A and 7A formed by connecting mixers 31A to 33A and first to third hoses 41A to 43A and an inflow tank 5A are provided.

  In this stirring device 100A, unlike the stirring device 100 described above, a well-known mixed-air jet pump P1 is used. By injecting air and injecting air and high-pressure water, a high-efficiency vacuum is generated, whereby turbid water is pulled up from the hose H. Note that the air-jet jet pump P1 may also be used in the stirring device 100 shown in FIG.

In the unit 7A, the first to third static mixers 31A to 33A and the first to third hoses 41A to 43A are extended and connected to each other so that they are alternately arranged in series. Each book is arranged in parallel. Such units 7A are arranged in parallel in two rows.
Specifically, a Y-shaped tube 8A is connected to the lower end of the medicine charging device 2A, a four-branch box 9A is connected to one branching portion 81A of the Y-shaped tube 8A, and similarly, the other branching portion 81A is also four-branched. Box 9A is connected. The two units 7A and 7A are connected to the four branch boxes 9A and 9A so as to incline so that the downstream end portions are downward.

FIG. 11 is a view showing the four-branch box 9A, in which (a) is a side view, (b) is a top view, and (c) is a front view.
The four-branch box 9A includes a box main body 91A, a connection main pipe 92A provided on one side surface of the box main body 91A and connected to the branch portions 81A and 81A of the Y-shaped pipe 8A, and a connection book of the box main body 91A. Four connection branch portions 93A, 93A,... Provided on a side surface facing the pipe portion 92A and connected to the four first static mixers 31A, 31A,. A rubber plate 94A is fixed to the side surface provided with the connecting branch portions 93A, 93A,... Above the connecting branch portions 93A, 93A,. This prevents reinforcement and deterioration due to water flow.

FIG. 12 is a side view showing the first to third static mixers 31A to 33A and the elements 312A, 322A and 332A.
The first to third static mixers 31A to 33A are the same as the first to third static mixers 31 to 33 shown in FIG. 1 described above, and the first static mixer 31A, the second static mixer 32A, and the third The pitch of the elements 312A, 322A, 332A becomes longer in the order of the static mixer 33A, and the stirring intensity becomes weaker from the upstream side toward the downstream side. The twist angles of the elements 312A, 322A, and 332A are, for example, a plurality of elements such as 45 degrees, 90 degrees, 180 degrees, and the like, as in the above-described stirrer 100. Yes.

  As shown in FIG. 10, an inflow tank 5A is provided at the downstream end of the third hoses 43A, 43A,... Of each unit 7A, 7A, and a partition plate 51A is provided in the inflow tank 5A. It is erected and partitioned into a first space 53A and a second space 54A. Further, a notch 511A is formed in a part of the upper end portion of the partition plate 51A, and the treated water after the floc is removed from the mixed liquid is removed from the first space portion 53A through the notch 511A. It overflows into the space portion 54A.

In addition, this invention is not limited to the said embodiment, In the range which does not deviate from the summary, it can change suitably. For example, in the above-described embodiment, three static mixers are provided. However, it is sufficient if a plurality of static mixers are provided, and two, or four or more static mixers may be provided. Similarly, the number of hoses can be changed as appropriate.
Moreover, although the 1st-3rd hoses 41 and 43 were used as a means to ensure the reaction time of muddy water and a chemical | medical agent, not only these hoses 41-43 but the residence tank (not shown) which can hold a liquid mixture is used. You can use it.

  In addition to the above modification, for example, the first to third static mixers, the first to third hoses and tanks are accommodated in the boxes, and the boxes are combined to constitute the stirring device. You may do it. For example, as shown in FIG. 13, a box 34B containing a first static mixer 31B, a box 35B containing a first hose 41B, a box 36B containing a second static mixer 32B, and a staying tank 37B. The stirrer 100B can be configured by connecting the boxes 38B, in which the components are accommodated, in order in combination. In FIG. 13, the same numerals are assigned to the same components as those in FIG. 1, and the description thereof is omitted. Further, the boxes 34B, 35B, 36B, and 38B may be combined in the horizontal direction in the horizontal direction instead of being combined in the vertical direction in the vertical direction. By using a box shape in this way, the stirring intensity, the number of stirrings, the dissolution time, etc. can be freely adjusted, and it can be applied to various applications. Furthermore, the stirrer 100B itself can be made more compact by adopting a box shape. In addition, each element constituting the first and second static mixers 31B and 32B has a short length, and these elements are detachably combined, so that the length of the pipe and the case where the pipe meanders. However, it can be easily installed in the pipe.

2 is a side view of the stirring device 100. FIG. (a) is a side view of the medicine injection device 2, (b) is a top view of the medicine injection device 2, and (c) is a front view of the medicine injection device 2. (a) is a top view of the first static mixer 31, (b) is a side view of the first static mixer 31, (c) is a front view of the first static mixer 31, and (d) is 3 is a side sectional view of a first static mixer 31. FIG. It is a perspective view of elements 312a-312e. It is a perspective view of the state which combined elements 312a-312e. 3 is a schematic side view of the inflow tank 5. FIG. FIG. 7A is a perspective view of the flexible container pack 6 with the lid 63 closed, and FIG. 7B is a perspective view of the flexible container pack 6 with the lid 63 open. (a) is a perspective view schematically showing the flexible container pack 6 except for the lid 63, and FIG. 8 (b) is an arrow view taken along the cutting line VIII-VIII of FIG. 8 (a). A sectional view, FIG. 8 (c), is a top view of FIG. 8 (a). It is the figure which showed the operation | movement process of the stirring apparatus. The modification of stirring apparatus 100A is shown, and it is an external appearance perspective view. It is the figure which showed the four branch box 9A, (a) is a side view, (b) is a top view, (c) is a front view. It is the side view which showed 1st-3rd static mixer 31A-33A and element 312A, 322A, 332A. It is a side view of the box-type stirring apparatus 100B.

Explanation of symbols

5 Inflow tank 6 Flexible container pack (convection means)
31 1st static mixer 32 2nd static mixer 33 3rd static mixer 41 1st hose 42 2nd hose 43 3rd hose 100 Stirrer 312a, 312b, 312c, 312d, 312e Element

Claims (4)

A plurality of static mixers in which a plurality of types of fluids are flown and arranged in series with each other;
Connected between each static mixer, a hose or a retention tank for retaining the plural kinds of fluids for a predetermined time; and
An inflow tank into which the mixed fluid mixed by flowing the plurality of types of fluids through the static mixer and the hose or the retention tank is provided ;
The static mixer includes a tube and a number of elements provided in the tube and twisted at a predetermined angle by a plate-like body,
Among the plurality of static mixers, the upstream static mixer has a shorter pitch of the elements than the downstream static mixer . The stirring apparatus according to claim 1 , wherein a plurality of detachable elements having different twist angles are provided in combination in the pipe. The stirring device according to claim 1 or 2 , wherein convection means for generating convection in the mixed fluid is provided immediately before the upstream side of the inflow tank. The stirring device according to any one of claims 1 to 3 , wherein the plurality of fluids include turbid water and a flocculant.

Images