JP5294434B2 - Refinement mixing equipment - Google Patents

Description

  The present invention relates to a fine mixing device that finely mixes and disperses another liquid, gas, or solid different from the liquid in the liquid.

  Conventionally, a mixed fluid in which a gas or other liquid is refined into particles having a diameter on the order of several tens of nanometers in a liquid, and mixed and dispersed has a physical property different from that in the case where the diameter of the particles is on the order of several hundred μm. As shown, it is used in many fields.

  For example, a mixed fluid in which gas bubbles (hereinafter referred to as nanobubbles) having a diameter of about 10 nm to several hundreds of nanometers are dispersed in water is used to purify sewage, promote growth in aquaculture, and promote plant cultivation. Has been studied. As a method for producing nanobubbles, a gas-liquid shearing method is known in which shearing force is applied to a mixed fluid formed by mixing air with water to generate nanobubbles by refining the air. The nano-bubble generating device that performs the gas-liquid shearing method includes an upstream screw portion having a spirally formed flow channel in a cylindrical casing, and a downstream cutter portion in which protrusions are disposed on the flow channel wall. (For example, refer to Patent Document 1).

  This nanobubble generating device, after applying swirl force and centrifugal force at the screw part to the mixed fluid of water and air pumped into the casing, splits and refines the bubbles in the mixed fluid at the cutter part, A mixed fluid containing bubbles having a diameter of about 0.5 to 3 μm is generated.

JP 2002-085949 A

  However, the nanobubble generating device described in Patent Document 1 has a lower limit of bubble miniaturization of about 0.5 μm in diameter, and it is difficult to stably generate bubbles having a diameter of several tens of nanometers.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a miniaturized mixing apparatus that can efficiently micronize a liquid or solid in a liquid to stably generate, mix and disperse particles having a diameter of 10 nm to 50 μm. .

In order to solve the above problems, the miniaturized mixing apparatus of the present invention is supplied with a liquid mixed with another liquid different from the liquid, a gas or a solid, and the other liquid contained in the mixed fluid. A refined mixing device for refining a gas or solid,
At least one swirl chamber pair in which two swirl chambers that form a swirl flow of the mixed fluid are opposed to each other;
A collision chamber that is connected to the two swirl chambers of the swirl chamber pair, and in which the swirling flow of the mixed fluid generated in these two swirl chambers is guided and collides,
And a discharge path for discharging the mixed fluid from the collision chamber.

  According to the above configuration, the mixed fluid is guided to the pair of swirl chambers, swirl flows of the mixed fluid are respectively formed in the two swirl chambers, and the swirl flows of the mixed fluid formed in the two swirl chambers are respectively Guided to the collision chamber. When the swirl flow of the mixed fluid guided from the two swirl chambers collides with the collision chamber, the gas, liquid, or solid contained in the mixed fluid is refined. Thus, by colliding the two swirling flows of the mixed fluid, the other liquid, gas or solid contained in the mixed fluid can be stably refined.

  In the present invention, the mixed fluid corresponds to a liquid that is a medium mixed with any other liquid, gas, and solid different from the liquid. An example of a mixed fluid in which a gas is mixed with a liquid is bubble water in which air bubbles are mixed with water. An example of a mixed fluid in which another liquid is mixed with a liquid is a water-oil emulsion in which oil particles are mixed with water. An example of a mixed fluid in which a solid is mixed with a liquid is organic sludge in which particles of an organic solid are mixed with water.

  In the present invention, the term “miniaturization” means that gas, liquid, and solid are formed into particles having a diameter in the range of 10 nm to several tens of μm. Preferably, it means forming particles having a diameter in the range of 10 nm to 50 μm. For example, when the object of miniaturization is gas, miniaturization refers to generating micro-nano bubbles having a diameter of 10 nm to 50 μm. Here, the micro-nano bubble is a general term for micro-bubbles and micro-nano bubbles. The micro-bubble refers to a bubble having a diameter of 500 nm to 50 μm, and the nano bubble refers to a bubble having a diameter of 10 nm to less than 500 nm.

In one embodiment, the swirl chamber pair includes a swirl chamber pair in which the two swirl chambers each have a central axis that is positioned in a straight line, and an inner diameter of a portion close to each other is smaller than an inner diameter of a portion far from each other. Formed and having a rotator shape symmetrical with respect to a plane orthogonal to the central axis,
A mixed fluid supply path is connected to each of the two swirl chambers so as to draw a tangent to the inner peripheral surface of each swirl chamber,
The portions of the two swirl chambers that are close to each other are connected to a right-angled passage formed so as to extend substantially at right angles to the central axis of the swirl chambers, and the collision chamber is located in a portion between the right-angled passages of the swirl chambers. On the other hand, a discharge path is formed in a portion connected to the collision chamber of the right-angle passage.

  According to the above-described embodiment, the mixed fluid is supplied to the two swirl chambers through the supply path that draws the tangent to the inner peripheral surface of the swirl chamber, whereby a swirl flow is effectively formed in each swirl chamber. The swirl flow formed by the two swirl chambers is guided to a collision chamber in a right-angle passage perpendicular to the central axis of these swirl chambers, so that the swirl flow effectively collides, and the gas in the mixed fluid The liquid or solid is effectively refined. The mixed fluid in which gas or the like is miniaturized is quickly discharged by being guided to a discharge path connected to the collision chamber in the right-angle path. By these, refinement | miniaturization of the gas etc. in a mixed fluid can be performed efficiently. In addition, the swirl chamber is shaped like a rotationally symmetric body with the central axis on a straight line, and the right angle passage serves as the collision chamber and the discharge path. it can.

  Here, the rotating body-shaped swirl chamber is formed, for example, in a conical shape, a hemispherical shape, a semi-spheroid shape, or a shape in which a cone, a hemisphere, a semi-spheroid, etc. are connected to the end face of a cylinder. Can do.

  In the miniaturization mixing apparatus of one embodiment, the swirling directions of the swirling flow of the mixed fluid formed in the two swirling chambers of the swirling chamber pair are opposite to each other.

  According to the embodiment described above, the swirling flows of the mixed fluids whose swirl directions are opposite to each other collide, so that the gas or the like in the mixed fluid can be effectively miniaturized.

In one embodiment, the miniaturization mixing apparatus includes two swirl chamber pairs,
The two swirl chamber pairs are arranged such that the central axes of the two swirl chambers of each swirl chamber pair are orthogonal to each other.

  According to the above embodiment, the swirl flow from the four swirl chambers is caused to flow into the collision chamber by arranging the two swirl chamber pairs so that the central axes of the two swirl chambers of each swirl chamber pair intersect each other. The swirl flow can be effectively collided. Therefore, the gas contained in the mixed fluid can be effectively miniaturized. Further, by disposing the four swirl chambers around the collision chamber at equal angular intervals, it is possible to increase the miniaturization capability while reducing the size of the miniaturization mixing apparatus.

A refined mixing device of one embodiment includes a casing having an inlet and an outlet for a mixed fluid;
It is accommodated in the casing and includes at least one block in which at least one swirl chamber pair, the supply passage, and the right-angle passage are formed.

  According to the said embodiment, the effect of refinement | miniaturization with respect to the gas, liquid, or solid in a mixed fluid can be adjusted by adjusting the number of the blocks accommodated in a casing. Therefore, the capability of miniaturization can be adjusted according to the object to be miniaturized and the amount of mixed fluid to be processed per unit time. In addition, by preparing a casing and blocks as main parts and adjusting the number of blocks, various types of miniaturizing and mixing apparatuses can be manufactured with a small number of parts. Therefore, the manufacturing cost of the miniaturization mixing apparatus can be reduced.

The refinement mixing apparatus of one embodiment has an inlet opening connected to the supply path and an outlet opening connected to the discharge path of the right-angle path on the outer surface of the block,
The mixed fluid flowing in from the inlet of the casing flows between the inner surface of the casing and the outer surface of the block, and flows into the swirl chamber from the inlet opening of the outer surface of the block through the supply path, while the discharge channel. The mixed fluid discharged from the outlet opening is guided to the outlet of the casing.

  According to the above embodiment, the mixed fluid flowing in from the inlet of the casing flows between the inner surface of the casing and the outer surface of the block, so that the mixed fluid is between the inner surface of the casing and the outer surface of the block. Filled with. Thereby, the pressure difference between the inside and outside of the block can be reduced, and the pressure resistance of the miniaturization mixing apparatus can be increased. Further, even if the mixed fluid leaks from the inside of the block, the mixed fluid can be recovered in the casing, so that leakage of the mixed fluid to the outside of the casing can be prevented. In particular, when a plurality of blocks are provided in the casing, even if the mixed fluid leaks from between the blocks, the leaked mixed fluid can be collected and returned to the block again for miniaturization.

  In the refined mixing apparatus of one embodiment, a mixed fluid having a pressure of 0.5 MPa or more and 5 MPa or less is supplied to the inlet of the casing.

  According to the above embodiment, the mixed fluid in the casing can be pressurized and sent from the supply path of the block to the swirl chamber, and the swirl flow of the mixed fluid can be generated particularly appropriately in the swirl chamber. Thereby, the swirl | vortex flow of mixed fluid can be made to collide appropriately in a collision chamber, and the gas etc. in mixed fluid can be refined especially effectively.

In one embodiment, the block has the right-angle passage formed between one surface and the other surface.
The plurality of blocks are connected in a state where the right-angle passages are successively connected, and one end of the right-angle passage of one end of the plurality of connected blocks is closed and the other end of the plurality of connected blocks The other end of the right-angle passage of the block is connected to the outlet of the casing.

  According to the above embodiment, the collision chamber and the discharge path corresponding to each block are sequentially formed in the right-angled passage that is successively connected by connecting a plurality of blocks. Therefore, every time the mixed fluid refined in the block at the distal end flows into the block on the proximal end side, it is subjected to the collision action of the swirl flow generated in each block, so that the gas in the mixed fluid is effectively refined. Can be

  In the miniaturization mixing apparatus of the above embodiment, a plurality of blocks having the same structure are sequentially connected, one end of the right-angle passage of one block is closed with a closing member, and the other end of the right-angle passage of the other end block is connected. By connecting to the outlet of the casing, it is possible to manufacture a miniaturized mixing apparatus having various uses or performances using a small number of parts. Therefore, the cost of the miniaturization mixing apparatus can be reduced.

The refined mixing apparatus of one embodiment includes an added fluid supply line for supplying an added fluid to be added to the mixed fluid,
The additive fluid supply line is formed to supply additive fluid to a position on the central axis of the swirl chamber in at least one swirl chamber of at least one swirl chamber pair.

  According to the embodiment, as the swirl flow of the mixed fluid is generated in the swirl chamber, the negative pressure region of the mixed fluid is formed along the central axis of the swirl chamber. By supplying the added fluid to a position on the central axis of the swirl chamber where the negative pressure region is formed, the added fluid is efficiently sucked into the swirl chamber by the negative pressure, and the added fluid is added to the mixed fluid forming the swirl flow. Can be effectively mixed and added. The negative pressure refers to a pressure that is low enough to generate a force for sucking the mixed fluid from the collision chamber to the swirl chamber.

  In the refinement mixing apparatus of one embodiment, the additive fluid supply line is connected to a surface on the opposite side to the side on which the two swirl chambers of the pair of swirl chambers are opposed.

  According to the above embodiment, the swirl chamber of the swirl chamber pair formed including the swirl chamber is opposed to the additional fluid supply line in the surface of the swirl chamber to which the additional fluid supply line is connected. Connected to the opposite side. Therefore, the added fluid can be sufficiently mixed with the swirling flow of the mixed fluid formed in the swirling chamber toward the side where the two swirling chambers face each other. As a result, for example, when an added fluid having oxidizing power is added to the mixed fluid, the mixed fluid can be sufficiently oxidized by the added fluid.

It is a longitudinal cross-sectional view which shows the refinement | mixing mixing apparatus of 1st Embodiment of this invention. It is a longitudinal cross-sectional view of the block which a fine mixing apparatus has. It is a plane sectional view of the block which a miniaturization mixing device has. It is a schematic diagram which shows the flow of the mixed fluid in the block which a refinement | miniaturization mixing apparatus has. It is a schematic plan sectional view showing another example of the block of the miniaturization mixing apparatus. It is a schematic plan sectional view showing another example of the block of the miniaturization mixing apparatus. It is a longitudinal cross-sectional view which shows the refinement | mixing mixing apparatus of 2nd Embodiment. It is a schematic diagram which shows the flow of the mixed fluid in the block which a refinement | miniaturization mixing apparatus has.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

(First embodiment)
FIG. 1 is a longitudinal sectional view schematically showing a miniaturization mixing apparatus according to a first embodiment of the present invention. This refined mixing apparatus 1 is a refined mixing apparatus that refines air as a gas dispersed in water as a liquid to generate micro-nano bubbles.

  The miniaturization mixing apparatus 1 includes a cylindrical casing 2 and a plurality of miniaturized blocks 3, 3,... Having a substantially octagonal prism shape housed in the casing 2.

  The casing 2 is formed by a sleeve-shaped side surface portion 21 and disk-shaped end surface plates 22 and 23, and a plurality of rod members (not shown) are spanned between the end surface plates 22 and 23. End plates 22 and 23 are pressed against both ends of the side portion 21 by nuts screwed to both ends. Thereby, the side part 21 and the end surface plates 22 and 23 of the casing 2 are being fixed mutually. In addition, a flange may be provided in both ends of the side part 21, and a flange and the end surface plates 22 and 23 may be fixed with a volt | bolt. An end face plate 22 on the inlet side of the casing 2 is provided with an inlet pipe 24 that is connected to a supply path (not shown) of the mixed fluid and guides the mixed fluid supplied into the casing 2 as indicated by an arrow A. On the other hand, the end face plate 23 on the outlet side of the casing 2 is provided with an outlet pipe 25 that is connected to a discharge path (not shown) of the mixed fluid and discharges the mixed fluid after the refinement process as indicated by an arrow B. ing.

  A dispersion head 26 for dispersing the mixed fluid flowing in from the inlet pipe 24 into the casing 2 and discharging it is connected to the inner surface of the end face plate 22 facing the inside of the casing 2. The dispersion head 26 is formed by a tubular portion 26a connected to the end face plate 22 and a hollow disk-shaped head portion 26b connected to the tip of the annular portion. The head portion 26b is provided with a plurality of through holes 26c, 26c,... For discharging the mixed fluid flowing from the annular portion 26a into the casing 2.

  FIG. 2 is a longitudinal sectional view of the miniaturized block 3, and the upper side of the paper surface is arranged toward the inlet side of the mixed fluid. FIG. 3 is a plan sectional view of the miniaturized block 3, and shows a state in which a section including a central axis of four swirl chambers 32 to be described later is viewed from the inlet side of the mixed fluid.

  The miniaturized block 3 includes a block body 31 that is a regular octagonal prism, four swirl chambers 32, 32,... Formed at equal angles around the central axis of the block body 31, and the center of the block body 31. A right-angle passage 33 formed concentrically with the shaft and perpendicular to a line connecting the opposing swirl chambers 32 and 32 is formed inside. The miniaturized block 3 can be formed of a constituent resin such as a fluororesin, for example. Note that the miniaturized block 3 may be formed using other synthetic resin depending on the target to be miniaturized and the conditions such as the temperature of the mixed fluid.

  The swirl chamber 32 of the miniaturized block 3 has a rotating body shape in which hemispheres are connected to the end face of the cylinder. The cylindrical portion faces the outer diameter side of the miniaturized block 3 and the hemispherical portion is the inner diameter of the miniaturized block 3. It is formed to face the side. The two swirl chambers 32 facing each other have a central axis arranged in a straight line to form a swirl chamber pair. In the present embodiment, two swirl chamber pairs are provided, and the two swirl chamber pairs are arranged so that the central axes connecting the swirl chambers 32 of each pair are orthogonal to each other. The right-angle passage 33 extends in a direction perpendicular to the central axis connecting the swirl chambers 32 of each swirl chamber pair. The right-angle passage 33 communicates with the hemispherical tips of the four swirl chambers 32. A portion of the right-angle passage 33 located between the swirl chambers 32 of each swirl chamber pair serves as a common collision chamber 33a for the two swirl chamber pairs. A portion of the right-angle passage 33 located closer to the outlet side of the casing 2 than the collision chamber 33a serves as a discharge path 33b for discharging the mixed fluid refined in the collision chamber 33a. On the other hand, the portion of the right-angle passage 33 located closer to the entrance side of the casing 2 than the collision chamber is an inflow passage 33c into which the mixed fluid refined from the refinement block 3 connected adjacent to the entrance side flows. Yes. The discharge passage 33 b of the right-angle passage 33 is continuous with an outlet opening 33 d formed on the end face of the miniaturized block 3.

  A supply path 34 for supplying the mixed fluid to the swirl chamber 32 is formed in the miniaturization block 3. The supply path 34 is formed so as to draw a tangent to the inner peripheral surface when viewed in the direction of the central axis of the swirl chamber 32, and the mixed fluid flows in from the inlet opening 34 a formed on the end surface of the micronized block 3. The mixed fluid is discharged into the chamber from an inflow opening 34b formed on the inner surface of 32. Two supply passages 34 are provided at symmetrical positions with respect to the central axis of the swirl chamber 32, and inlet openings 34 a of the respective supply passages 34 are respectively formed on both end faces of the miniaturized block 3. In the plane sectional view of FIG. 3, the position in the planar direction of the supply path 34 on the side that does not appear in the section is indicated by an imaginary line. Note that one of the two supply paths 34 may be closed according to the flow rate and pressure of the mixed fluid supplied to the casing 2 or the speed of the swirl flow to be formed in the swirl chamber 32. Alternatively, only one supply path 34 per swirl chamber 32 may be formed in the miniaturized block 3.

  When the supply path 34 is provided in the swirl chamber 32 so as to draw a tangent to the inner peripheral surface of the refining block 3, the outer surface of the refining block 3 is filled with a fluid mixture having a predetermined pressure. The mixed fluid flows into the supply path 34 and a swirl flow can be formed in the swirl chamber 32 without using a movable part.

  The swirl chamber 32 of the miniaturized block 3 has a cylindrical hole having a spherical bottom on every other four side surfaces of the eight side surfaces of the block body 31 of a regular octagonal prism. The opening is formed by closing with a circular dome-shaped lid 35. The block main body 31 of the miniaturized block 3 is provided with a through hole 36 through which a bar member for connecting and fixing the plurality of miniaturized blocks 3 accommodated in the casing 2 is inserted.

  As shown in FIG. 1, the miniaturization mixing apparatus 1 of the present embodiment has a micronization block 3 coupled to an inner side surface of an end face plate 23 on the outlet side via a connecting pipe 37. Two miniaturized blocks 3 are sequentially connected by a connecting pipe 37. In the finest block 3 at the extreme end on the inlet side, the opening 33 e on the inlet side of the right-angle passage 33 is closed with a cap 38. In addition, the number of the refinement | miniaturization blocks 3 provided in the refinement | mixing mixing apparatus 1 can be changed suitably according to the flow volume and kind of mixed fluid.

  A premixing device for mixing air and water is connected to the inlet pipe 24 of the casing 2. As the premixing device, for example, a device that includes a pump that pressurizes water and an ejector nozzle disposed on the discharge side of the pump and that mixes air with the pressure water discharged from the pump by the ejector nozzle can be used. In addition, as a premixing apparatus, you may use a well-known gas-liquid mixing pump.

  The miniaturization mixing apparatus 1 having the above-described configuration operates as follows. First, the premixing device is activated, and a mixed fluid, which is water containing bubbles, is supplied to the inlet pipe 24 as shown by an arrow A through a supply pipe (not shown). The bubbles of the mixed fluid supplied from the premixing device preferably have a diameter of about 100 μm to several millimeters. The supplied mixed fluid preferably has a flow rate of about 1 L / min to 50 L / min in the inlet pipe 24 and a pressure of about 0.1 MPa to 5 MPa. Particularly preferably, in the inlet pipe 24, the pressure of the mixed fluid is about 0.5 MPa or more and 5 MPa. In this mixed fluid, water is mixed at a rate of 0.8 L / min to 40 L / min and air is mixed at a rate of 0.2 L / min to 10 L / min.

  The mixed fluid flowing into the inlet pipe 24 flows into the head portion 26b of the dispersion head 26 through the annular portion 26a, and is dispersed and discharged into the casing 2 from the plurality of through holes 26c, 26c,. . The mixed fluid discharged into the casing 2 is filled between the inner surface of the casing 2 and the outer surfaces of the plurality of miniaturized blocks 3. Thereby, the pressure difference between the inside and outside of the miniaturization block 3 can be reduced, and the pressure resistance of the miniaturization mixing apparatus 1 can be improved. Further, even if the mixed fluid leaks from the inside of the micronized block 3, the mixed fluid can be recovered in the casing 2, so that leakage of the mixed fluid to the outside of the casing 2 can be prevented.

  The mixed fluid filled between the casing 2 and the micronization block 3 flows into the supply path 34 from the inlet opening 34a formed on the end face of each micronization block 3, and is introduced into the swirl chamber 32 from the inflow opening 34b. It is burned. The mixed fluid guided from the supply path 34 to the swirl chamber 32 is swirled around the central axis in the swirl chamber 32 because the supply path 34 is formed tangential to the central axis of the swirl chamber 32. Become. The swirling flow of the mixed fluid formed in the swirl chamber 32 flows from the end of the cylindrical portion provided with the inflow opening 34b of the swirl chamber 32 toward the end of the hemisphere, and the swirling diameter is reduced accordingly. The flow rate increases. The mixed fluid that has reached the end of the hemispherical portion located on the inner diameter side of the block 3 of the swirl chamber 32 is discharged into the collision chamber 33a of the right-angle passage 33 while swirling at high speed.

  The swirl directions of the swirl flows generated in the two swirl chambers 32 constituting the swirl chamber pair are opposite to each other, so that the swirl flows in opposite directions collide with each other in the collision chamber 33a of the right-angle passage 33. FIG. 4 is a schematic diagram showing the flow of the mixed fluid in the miniaturized block 3, and shows a cross section passing through the central axes of the two swirl chambers 32 forming a swirl chamber pair. As shown in FIG. 4, the mixed fluid flows into the swirl chamber 32 </ b> L on the left side of the drawing sheet from the lower side of the drawing sheet through the supply path 34 </ b> L, and the swirling flow clockwise around the central axis from the outer diameter side toward the inner diameter side FL is formed. On the other hand, the mixed fluid flows into the swirl chamber 32R on the right side of the page through the supply path 34R from the upper side of the page, and a clockwise swirling flow FR from the outer diameter side toward the inner diameter side is formed. These swirl flows FL and FR swirl in opposite directions on a straight central axis passing through the left and right swirl chambers 32L and 32R. These swirl flows FL and FR are discharged from the swirl chambers 32L and 32R to the collision chamber 33a, and swirl jets swirling in a conical shape from the discharge ports as indicated by arrows DL and DR are formed. Since these swirling jets DL and DR swirl in opposite directions, by colliding with each other in the collision chamber 33a, the air bubbles in the mixed fluid are effectively destroyed and refined to a diameter of 10 nm to 50 μm. Air micro-nano bubbles are generated. Furthermore, since two swirl chamber pairs are provided, the swirling flow of the mixed fluid of each swirl chamber pair collides with each other in the collision chamber 33a, and the air bubbles in the mixed fluid are effectively refined and micronized. Nano bubbles are generated.

  Here, in the swirl chambers 32L and 32R, negative pressure regions NL and NR are formed along the center axis of swirling of the mixed fluid, that is, the center axis of the swirl chambers 32L and 32R having a rotating body shape. By the action of the negative pressure regions NL and NR, a suction flow in which the mixed fluid flows toward the swirl chambers 32L and 32R is generated in the collision chamber 33a as indicated by arrows RL and RR. Between the suction flows RL and RR and the swirling jets DL and DR, collision flows CL and CR are generated due to the collision between the suction flows RL and RR and the swirling jets DL and DR, whereby air bubbles in the mixed fluid are generated. Micronized nanobubbles are generated by miniaturization. Further, the mixed fluid refined on the upstream side flows into the swirl chambers 32L and 32R as suction flows RL and RR, and is mixed with the swirl flow in the swirl chambers 32L and 32R. Then, it is discharged again into the collision chamber 33a. In this way, micro-nano bubbles are effectively generated by repeatedly miniaturizing the air bubbles in the mixed fluid.

  The mixed fluid in which the air bubbles are refined in the collision chamber 33a of the predetermined refined block 3 passes through the discharge passage 33b and is refined on the outlet side of the casing 2 through the connection pipe 37 connected to the outlet opening 33d. Guided to block 3. The mixed fluid guided to the micronization block 3 on the outlet side of the casing 2 is guided to the collision chamber 33a from the inflow path 33c of the micronization block 3, and the mixed fluid by the two swirl chamber pairs of the micronization block 3 is mixed. Subjected to the impact of swirling flow. Thereby, the air bubbles contained in the mixed fluid guided from the miniaturization block 3 on the inlet side of the casing 2 are further refined together with the refinement of the air bubbles in the mixed fluid supplied from the swirl chamber pair. . In this way, the mixed fluid in which the air bubbles are refined in the refinement block 3 on the inlet side of the casing 2 flows through the plurality of refinement blocks 3 on the exit side and repeatedly receives the collision action of the swirl flow. Air bubbles in the mixed fluid are effectively miniaturized to a diameter of about several tens of nanometers. As a result, micro-nano bubbles of high concentration air are obtained in the mixed fluid. The mixed fluid whose air bubbles have been refined in the most refined block 3 on the outlet side is discharged from an outlet pipe 25 provided on the end face plate 23 on the outlet side of the casing 2 to a discharge pipe (not shown) as indicated by an arrow B. Discharged.

  According to the refined mixing apparatus 1 of the present embodiment, the swirl flow of the mixed fluid is caused to collide by each refined block 3 including the swirl chamber pair having the two swirl chambers 32 whose central axes are arranged in a straight line. The air bubbles can be stably miniaturized to a diameter of 10 nm to 50 μm. Moreover, the refinement | mixing mixing apparatus 1 can refine | miniaturize an air bubble by the comparatively simple structure of the swirl chamber pair which has the two swirl chambers 32, and the right-angle channel | path 33 containing the collision chamber 33a. Therefore, the miniaturization mixing apparatus 1 can be manufactured at a relatively low cost. Moreover, since the miniaturization mixing apparatus 1 does not have a movable part, maintenance can be simplified and durability can be improved.

  Moreover, the fine mixing apparatus 1 of this embodiment adjusts the capability of refinement | miniaturization according to the quantity of the air contained in mixed fluid by adjusting the number of the fine blocks 3 accommodated in the casing 2. FIG. be able to. Therefore, the performance of miniaturization can be finely set according to the object to be miniaturized and the amount of mixed fluid to be processed per unit time. In addition, by preparing the casing 2 and the miniaturized block 3 as main parts and adjusting the number of the miniaturized blocks 3, various types of the miniaturized mixing apparatus 1 can be manufactured with a small number of parts. Therefore, the manufacturing cost of the miniaturization mixing apparatus 1 can be reduced.

  In the said embodiment, although the refinement | miniaturization block 3 which comprises the refinement | mixing mixing apparatus 1 was provided with two swirl chamber pairs, the swirl chamber pair with which a refinement | miniaturization block is provided may be one. FIG. 5 is a schematic plan sectional view showing an example of a miniaturized block having one swirl chamber pair. The miniaturized block 103 includes one swirl chamber pair including two swirl chambers 132 whose central axes are arranged in a straight line in a rectangular block main body 131 in a plan view. A right-angle passage 133 extending in a direction perpendicular to the center axis of the two swirl chambers 132 of the swirl chamber pair is provided, and a portion of the right-angle passage 133 positioned between the two swirl chambers 132 is a collision chamber. It has become. Each swirl chamber 132 communicates with the outer surface of the miniaturized block 103 by two supply paths 134 extending in a direction of drawing a tangent to the inner peripheral surface of the swirl chamber 132. In the plan sectional view of FIG. 5, the position in the planar direction of the supply path 134 on the side that does not appear in the section is indicated by an imaginary line. According to the miniaturization block 103, air or the like in the mixed fluid is miniaturized by a pair of swirl chambers, so that a compact miniaturization mixing apparatus can be configured.

  Moreover, in the said embodiment, although the refinement | miniaturization block 3 which comprises the refinement | mixing-mixing apparatus 1 had the shape where the swirl chamber 32 connected the hemisphere to the cylinder, even if a swirl chamber is formed in another shape. Good. FIG. 6 is a schematic plan sectional view showing an example of a miniaturized block having a swirl chamber of another shape. The miniaturized block 203 includes two swirl chamber pairs in a generally octagonal prism-shaped block main body 231. The swirl chamber 232 forming each swirl chamber pair has a shape in which a cone is connected to a cylindrical end surface. . The two swirl chambers 232 of each swirl chamber pair are connected to a right-angle passage 233 extending perpendicular to the central axis between each other, and a portion of the right-angle passage 233 between the two swirl chambers 232 is a collision chamber. Yes. Each swirl chamber 232 communicates with the outer surface of the miniaturized block 203 by two supply passages 234 extending in a direction in which a tangent to the inner peripheral surface of the swirl chamber 232 is drawn. In the plan cross-sectional view of FIG. 6, the position in the planar direction of the supply path 234 on the side that does not appear in the cross section is indicated by a virtual line. According to the miniaturization block 203, the swirl chamber 232 has a shape in which a cone is connected to a cylinder, so that a high-speed swirl flow can be generated and the miniaturization of a gas or the like in the mixed fluid can be promoted. . Moreover, even if this refinement | miniaturization block 203 is a mixed fluid with comparatively high viscosity, it can form a swirl flow sufficient for refinement | miniaturization of the gas etc. which are contained. Further, the fine block constituting the miniaturization mixing apparatus of the present invention may have a shape in which a semi-spheroid or the like is connected to the end face of the cylinder in addition to a shape in which a hemisphere or a cone is connected to the end face of the cylinder. .

(Second Embodiment)
FIG. 7 is a longitudinal sectional view showing a miniaturization mixing apparatus according to a second embodiment of the present invention. The refined mixing device 11 differs from the first embodiment in that the solid contained in the mixed fluid is refined and the added fluid is added to and mixed with the mixed fluid. In the second embodiment, parts having the same functions as those in the first embodiment are referred to by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 7, the miniaturization mixing apparatus 11 of the present embodiment includes an additional fluid supply line 4 that supplies ozone as an additional fluid to each miniaturization block 3 from the outside. The additional fluid supply line 4 includes a supply pipe 41 penetrating the end face plate 22 of the casing 2 and a plurality of branch pipes 42 branched from the supply pipe 41 toward the plurality of miniaturized blocks 3, 3,. 42,... Each branch pipe 42 is connected to one swirl chamber 32 of the four swirl chambers 32, 32,... The branch pipe 42 is the center of the end surface 32a opposite to the opposing side of the opposing swirl chambers 32, 32 of the block 3, and an opening 32b is formed on the central axis CW of the rotating body-shaped swirl chamber 32. So communicate. The additional fluid supply line 4 is connected to a low-pressure ozone supply pump (not shown) at the base end side of the supply pipe 41. The ozone pumped from this ozone supply pump is supplied to the supply pipe 41 of the added fluid supply line 4 as shown by an arrow C, passes through the branch pipe 42, and is supplied to the center of the end face 32a of the swirl chamber 32. It has become.

  This refined mixing device 11 is installed in a ballast tank of a ship, decomposes and oxidizes aquatic organisms and organic substances such as fungi, plankton, fish eggs and juveniles contained in ballast water, and purifies ballast water. Is.

  In recent years, the seawater that ships take into ballast tanks, that is, aquatic organisms such as plankton and fish eggs mixed in the ballast water, have a negative impact on the ecosystem of this sea area by discharging it to other sea areas after voyage. Has been pointed out. There are many types of aquatic organisms mixed in ballast water, ranging from bacteria to juveniles, which can cause problems such as generating red tides in the discharge areas of ballast water and destroying native fish. Is causing.

  In order to solve such a problem of ballast water, the ballast water in the ballast tank is guided to the inlet pipe 24 of the miniaturization mixing apparatus 11 of the present embodiment, and ozone is supplied to the additive fluid supply line 4. As a result, the aquatic organisms contained in the ballast water are refined and killed, the organic matter is refined, and the remnants of the aquatic organisms and the organic matter are oxidized with ozone.

  Specifically, ballast water having a flow rate of about 1 L / min to 50 L / min and a pressure of about 0.1 MPa to 5 MPa is supplied to the inlet pipe 24 of the micronizer 11. The ballast water that has flowed into the inlet pipe 24 is dispersed in the casing 2 by the dispersion head 26, passes through the supply path 34 from the inlet opening 34 a of the miniaturized block 3, and is guided into the swirl chamber 32 from the inflow opening 34 b. In the swirl chamber 32, as shown in FIG. 8, swirl flows FL, FR of ballast water are formed around the central axis of the swirl chamber 32, and negative pressure regions NL, NR are formed along the central axis. . Ozone is supplied through the branch pipe 42 as shown by the arrow D to the center of the end surface 32a of the swirl chamber 32L connected to the additive fluid supply line 4 by the action of the negative pressure region NL and the action of the ozone supply pump. Is done. This ozone is supplied into the swirl chamber 32 from the center opening 32b of the end face 32a of the swirl chamber 32L, and is effectively mixed with the ballast water forming the swirl flow FL in the swirl chamber 32. Ballast water mixed with ozone to form a swirl flow FL is ejected from the swirl chamber 32 to the collision chamber 33a as a swirl jet DL. The swirling jet DL collides with the swirling jet DR of the ballast water ejected from the swirling chamber 32 without adding ozone, and this impact destroys aquatic organisms and the like contained in the ballast water. And is oxidized by ozone. In addition, aquatic organisms contained in the ballast water are destroyed and refined by the collision flows CL and CR caused by the collision between the suction flows RL and RR and the swirling jets DL and DR. Further, ballast water that has been refined and oxidized on the upstream side, such as aquatic organisms, flows into the swirl chambers 32L and 32R as suction flows RL and RR, and is mixed with the swirl flow in the swirl chambers 32L and 32R. In addition, ozone is added to form swirling jets DL and DR, which are again discharged into the collision chamber 33a.

  As described above, according to the micronization device 11 of the present embodiment, the aquatic organisms and organic substances contained in the ballast water are destroyed and miniaturized and oxidized, thereby preventing the problem that the ballast water adversely affects the marine ecosystem. it can.

  In the present embodiment, the branch pipe 42 of the added fluid supply line 4 is connected to only one swirl chamber 32 of each miniaturized block 3, but the branch pipe 42 is connected to both the pair of opposed swirl chambers 32. Alternatively, ozone may be added, or ozone may be added by connecting branch pipes 42 to all four swirl chambers 32 of the miniaturized block 3. Moreover, although the additive fluid supply line 4 is connected to all the miniaturized blocks 3 and ozone is supplied, it is not always necessary to supply ozone to all the miniaturized blocks 3, and ozone is not supplied to at least one miniaturized block 3. May be added. Further, although gaseous ozone is added as the additive fluid, a liquid additive fluid such as a sodium hypochlorite solution may be added. Moreover, although ozone which is an oxidizing agent was added as an addition fluid, you may add a reducing agent. Here, it is preferable that the additive fluid contains a component in consideration of rust prevention of the ballast tank. Also in the miniaturization apparatus 11 of the second embodiment, the miniaturization blocks 103 and 203 of the modification of the miniaturization apparatus 1 of the first embodiment can be used.

  As mentioned above, as 1st and 2nd embodiment of this invention, with respect to the mixed fluid with which air was mixed with water, the refined mixing apparatus 1 which refine | miniaturizes an air bubble, and the mixed fluid with which aquatic organisms etc. were mixed with seawater On the other hand, the micronization mixing device 11 that refines aquatic organisms and the like and adds ozone has been described. However, the micronization mixing device of the present invention is applicable to a mixed fluid in which various fluids or solids are mixed in a liquid. The fluid or solid may be refined. For example, the gas may be refined with respect to a mixed fluid formed by mixing a gas such as oxygen and nitrogen with water as a fluid. Moreover, the fine mixing apparatus of this invention may refine | miniaturize said other liquid with respect to the mixed fluid with which the other liquid was mixed with the liquid as a medium.

  Examples of the mixed fluid in which another liquid is mixed with the liquid of the medium can include a mixed fluid in which oil is mixed with water. According to the miniaturized mixing apparatus of the present invention, water or oil of the mixed fluid is used. It can be refined to form an emulsion of water and oil. The water-oil emulsion formed by the fine mixing device of the present invention can be used as a fuel for diesel engines, turbine engines, boilers and the like. Since the miniaturized mixing apparatus of the present invention has no portion driven by power, there are few failures, it is easy to disassemble, and cleaning and repair are easy. Therefore, it is possible to reduce the cost of the fuel supply mechanism such as the engine and the boiler and improve the maintainability.

  Moreover, the mixed fluid containing the micro / nano bubbles generated by the miniaturization mixing apparatus of the present invention can be used for various processing applications depending on the miniaturized gas. For example, it can be used for environment-related fields such as water purification of lakes and rivers, sewage treatment, and soil purification. Moreover, it can be used for applications in the fishery industry such as promotion of aquaculture and improvement of oxygen content of ginger. It can also be used for industrial applications such as factory wastewater treatment and parts cleaning. It can also be used for food industry applications such as food wastewater treatment and food washing, and agricultural applications such as hydroponic cultivation and agricultural water purification. Moreover, it can be used for applications in the health field such as a fine bubble tub and drinking water, and in medical fields such as ultrasonic diagnosis and ultrasonic therapy. Further, it can be used for applications in the combustion field, such as the addition of bubbles to fuel and the improvement of fuel efficiency by oil-water emulsion fuel. It can also be used for hygiene applications such as microbial treatment and sterilization with a mixture of ozone fine particles.

  Moreover, the refined mixing apparatus of the present invention can also produce a refined mixed fluid by refining a solid with respect to a mixed fluid in which a solid is mixed with a liquid as a medium. As such a mixed fluid, there is organic sludge in which organic solids are mixed with water of a medium. According to the refined mixing apparatus of the present invention, organic solids of organic sludge can be refined and dispersed in water to promote aggregation of organic solids. Other examples of this type of mixed fluid include food wastewater such as boiled food such as udon.

  Further, the gas, the liquid, and the medium in which the gas to be miniaturized by the miniaturization mixing apparatus of the present invention is mixed may be a liquid other than water.

  In the above-described embodiment, each of the miniaturized blocks 3 has the right-angle passages 33 connected in series, but the right-angle passages 33 may be connected in parallel. That is, the mixed fluid does not have to be refined a plurality of times by the plurality of miniaturization blocks 3, and the mixed fluids that have been refined once by the individual miniaturization blocks 3 are collected in parallel to form the casing 2. You may discharge outside.

  Moreover, in the said embodiment, although the refinement | miniaturization block 3 was accommodated in the casing 2 and the refinement | mixing refinement apparatus 1 was comprised, it does not have the casing 2, but has the function similar to the component of the refinement | miniaturization block 3. A miniaturization mixing apparatus may be configured. That is, the miniaturization mixing apparatus includes at least one pair of swirl chambers to which a mixed fluid is supplied, a collision chamber that is connected to the two swirl chambers of the swirl chamber pair, and a discharge path that discharges the mixed fluid from the collision chamber. It may be composed of a plurality of parts to be formed.

  Further, in the above embodiment, the dispersion head 26 may not be provided, and the mixed fluid may be directly discharged into the casing 2 from the inner opening connected to the inlet pipe 24 of the end face plate 22 on the inlet side.

DESCRIPTION OF SYMBOLS 1 Fine mixing apparatus 2 Casing 3 Fine block 32 Swivel chamber 33 Right angle path 33a Right angle path collision chamber 33b Right angle path discharge path 33c Right angle path inflow path 33d Right angle path outlet opening 34 Supply path

Claims (2)

A finely mixed apparatus for supplying a liquid to which a mixed fluid in which another liquid, gas or solid different from the liquid is mixed is supplied, and for refining the other liquid, gas or solid contained in the mixed fluid,
At least one swirl chamber pair in which two swirl chambers that form a swirl flow of the mixed fluid are opposed to each other;
A collision chamber connected to the two swirl chambers of the swirl chamber pair and guided so that the swirl flow of the mixed fluid generated in these swirl chambers collides;
A discharge path for discharging the mixed fluid from the collision chamber,
Turning direction of the swirling flow of the mixed fluid are respectively formed on two swirl chamber of the swirl chamber pairs, Ri opposite der each other,
In the swirl chamber pair, the two swirl chambers each have a central axis positioned on a straight line, and an inner diameter of a portion close to each other is formed smaller than an inner diameter of a portion far from each other, and is orthogonal to the central axis. Having a rotating body shape that is symmetric with respect to the surface;
A mixed fluid supply path is connected to each of the two swirl chambers so as to draw a tangent to the inner peripheral surface of each swirl chamber,
The portions of the two swirl chambers that are close to each other are connected to a right-angled passage formed so as to extend substantially at right angles to the central axis of the swirl chambers, and the collision chamber is located in a portion between the right-angled passages of the swirl chambers. On the other hand, a discharge passage for discharging the mixed fluid refined by the fine mixing device is formed in one portion connected to the collision chamber of the right-angle passage, and the other connected to the collision chamber of the right-angle passage. An inflow path through which the mixed fluid refined by another refinement mixing apparatus flows is formed in the part of the above . In the fine mixing apparatus according to claim 1 ,
An additive fluid supply line for supplying an additive fluid to be added to the mixed fluid;
The additive fluid supply line is formed so as to supply additive fluid to a position on the central axis of the swirl chamber in at least one swirl chamber of at least one swirl chamber pair. Chemical mixing equipment.

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