JP6898261B2 - Mixer - Google Patents

Description

The present invention relates to a mixing device for finely mixing a plurality of fluids, and more particularly to a mixing device capable of simplifying the configuration of the device, reducing the manufacturing cost, and improving maintainability.

Conventionally, various mixing devices that finely and uniformly mix a plurality of fluids such as liquid and liquid or liquid and gas have been used.

As an example of such a conventional mixing device, a cylindrical casing in which a pair of lids having an inlet or an outlet into which a plurality of fluids flow in or out is formed at each opening. Inside, a mixing flow path is formed in which a plurality of fluids are circulated to be mixed (see Patent Document 1).

Further, the mixing flow path is configured by laminating a plurality of mixing plates in the flow direction of the fluid in the casing. Each of the mixing plates is formed to have substantially the same diameter as the inner diameter of the casing, and has a through hole that communicates with the other mixing plates to form a hollow portion in the center of the casing, and other mixing plates adjacent to each other in the stacking direction. A plurality of flow holes arranged on the entire surface at different positions are provided so that some of them communicate with each other. Further, a part of each of the flow holes communicates with the through hole or is opened to the outer peripheral edge side.

Then, when a plurality of premixed fluids are applied with pressure and flow into the casing from the inflow port of the casing, the plurality of fluids are dispersed and merged in each through hole and each flow hole of each mixing plate. Inversion, turbulence, vortex, and collision are repeated, and the mixture is finely and uniformly mixed and discharged from the outlet of the casing.

Japanese Patent No. 5887688

However, the conventional mixing device has a problem that the structure of the device, particularly the structure of the mixing flow path, is complicated, the manufacturing cost is high, and the maintenance becomes complicated.

Therefore, an object of the present invention is to provide a mixing device capable of reducing manufacturing costs and improving maintainability while maintaining suitable mixing performance.

In order to achieve the above-mentioned object, the feature of the mixing device according to the present invention is that the mixing flow is provided in a casing in which a lid having an inflow port or an outflow port through which a fluid flows is provided at both ends of the cylinder. In a mixing device in which a path is formed, two or more fluids flowed into a casing from the inflow port under pressure are mixed by passing through the mixing flow path and flowed out from the outflow port. The flow path is composed of one or two or more mixing plates arranged in parallel with each lid of the casing at a predetermined interval in the flow direction of the fluid. Each of the mixing plates is formed to have substantially the same diameter as the inner diameter of the cylinder of the casing, and a plurality of mixing holes provided with a turbulent flow generation mechanism are located inside the outer peripheral edge of the mixing plate at predetermined intervals. An upstream circular hole formed in the entire surface of the portion and each mixing hole formed in the thickness direction from the upstream side in the fluid flow direction, and the upstream circular hole having a smaller diameter than the upstream circular hole. The point is that the side circular hole and the downstream circular hole drilled concentrically from the downstream side in the thickness direction are communicated with each other.

By adopting such a configuration, it is possible to repeat collision, dispersion, merging, etc. of a plurality of fluids in the mixing flow path by circulating each mixing hole of the mixing plate, thereby causing a plurality of fluids. Can be finely mixed.

Further, by providing a turbulent flow generation mechanism to each mixing hole of the mixing plate, the structure of the entire device can be simplified, the manufacturing cost of the device can be reduced, and the maintainability can be improved. ..

Further, since the mixing holes of the mixing plate are concentrically bored with circular holes having different diameters to communicate with each other, it is possible to maintain sufficient contraction acceleration performance with a simple structure and each mixing hole. Can be easily formed, the manufacturing cost of the mixing plate or the mixing device can be reduced, and the maintainability can be improved.

Further, another feature of the mixing device according to the present invention is that a mixing flow path is formed in a casing in which a lid having an inflow port or an outflow port through which a fluid flows is formed at both ends of the cylinder. In a mixing device in which two or more fluids that have been pressured and flowed into a casing from the inlet are mixed by passing through the mixing channel and flow out from the outlet, the mixing channel is: Of the two or more mixing plates and each of the mixing plates, each of which is provided with a predetermined gap between each lid of the casing and is arranged in parallel with one or a predetermined interval in the flow direction of the fluid. are composed of a second mixing plate arranged in parallel at predetermined intervals on the upstream side of the mixing plate disposed on the most upstream side, the mixing plate is substantially the same as the inner diameter of the cylindrical body of the casing A plurality of mixing holes formed in a diameter and provided with a turbulent flow generation mechanism are bored on the entire surface of the inner portion of the mixing plate from the outer peripheral edge at predetermined intervals, and each of the mixing holes is a fluid. An upstream circular hole drilled in the thickness direction from the upstream side in the flow direction and a thickness direction from the downstream side concentrically with the upstream circular hole having a diameter smaller than that of the upstream circular hole. downstream and a circular hole is configured in communication, the second mixing plate is formed in the same diameter as the mixing plate, a plurality of through-holes extending in the thickness direction is arranged on the outer periphery and concentrically It is located on the virtual ring at regular intervals.

By adopting such a configuration, it is possible to repeat collision, dispersion, merging, etc. of a plurality of fluids in the mixing flow path by circulating each mixing hole of the mixing plate, thereby causing a plurality of fluids. Can be finely mixed.

Further, a plurality of fluids flowing into the casing from the inflow port are accelerated by the flow holes of the second mixing plate, causing collision, dispersion, merging, etc. with the mixing plate on the upstream side in the fluid flow direction. Repeatedly, the mixing performance in each mixing plate can be improved.

Further, a turbulent flow generation mechanism is provided to each mixing hole of the mixing plate, and each flow hole of the second mixing plate is formed at equal intervals on a virtual ring concentric with the outer circumference of the second mixing plate. As a result, the structure of the entire device can be simplified, the manufacturing cost of the device can be reduced, and the maintainability can be improved.

Further, another feature of the mixing device according to the present invention is that a mixing flow path is formed in a casing in which a lid having an inflow port or an outflow port through which a fluid flows is formed at both ends of the cylinder. In a mixing device in which two or more fluids that have been pressured and flowed into a casing from the inlet are mixed by passing through the mixing channel and flow out from the outlet, the mixing channel is: A predetermined gap is provided between each lid of the casing, and the mixing unit is composed of two or more mixing units arranged in parallel with a predetermined interval in the flow direction of the fluid. A plurality of mixing holes, which are formed to have substantially the same diameter as the inner diameter of the cylinder of the casing and have a turbulent flow generation mechanism, are bored on the entire surface of the inner portion from the outer peripheral edge of the mixing plate at predetermined intervals. One or two or more mixing plates arranged in parallel with each other at predetermined intervals in the fluid flow direction, and a plurality of flow holes formed in the same diameter as the mixing plate and penetrating in the thickness direction are formed on the outer periphery. A first, which is perforated on a concentric virtual ring at equal intervals and arranged in parallel with a predetermined interval on the upstream side of the mixing plate arranged on the most upstream side of each of the mixing plates. The two mixing plates are formed to have a diameter smaller than that of each of the mixing plates and the second mixing plate, and are arranged at predetermined intervals on the downstream side of the mixing plate arranged on the most downstream side of the mixing plates. The point is that it is composed of a third mixing plate.

By adopting such a configuration, it is possible to repeat collision, dispersion, merging, etc. of a plurality of fluids in the mixing flow path by circulating each mixing hole of the mixing plate, thereby causing a plurality of fluids. Can be finely mixed.

Further, a plurality of fluids flowing into the casing from the inflow port are accelerated by the flow holes of the second mixing plate, and collide between the second mixing plate and the mixing plate on the most upstream side in the fluid flow direction. , Dispersion, merging, etc. are repeated, and the mixing performance in each mixing plate can be improved.

Further, the fluid mixed by flowing through each mixing hole of the mixing plate on the most downstream side in the flow direction of the fluid collides with the third mixing plate and is diverted to the outer peripheral side of the third mixing plate. The fluid mixed by each mixing plate is further accelerated by flowing through the gap between the outer periphery and the inner peripheral surface of the casing, and then colliding between the third mixing plate and the lid on the downstream side. It can be mixed more finely.

Further, each mixing hole of the mixing plate is provided with a turbulent flow generation mechanism, and each flow hole of the second mixing plate is formed at equal intervals on a virtual ring concentric with the outer circumference of the second mixing plate. Further, by forming the third mixing plate to have a smaller diameter than the mixing plate and the second mixing plate, the structure of the entire device can be simplified and the manufacturing cost of the device can be reduced. It can be done and maintainability can be improved.

Further, another feature of the mixing device according to the present invention is that in the mixing device according to claim 3 , each mixing hole of the mixing plate is bored from the upstream side in the fluid flow direction to the upstream side in the thickness direction. The point is that the side circular hole and the downstream circular hole, which is smaller in diameter than the upstream circular hole and is concentrically bored with the upstream circular hole in the thickness direction from the downstream side, are communicated with each other. is there.

By adopting such a configuration, a plurality of fluids flowing through each mixing hole are accelerated by contraction in the upstream circular hole and the downstream circular hole having different diameters of each mixing hole, and collide in the mixing flow path. Dispersion, merging, etc. are repeated, which allows a plurality of fluids to be finely mixed.

In addition, sufficient contraction acceleration performance can be maintained by a simple configuration, the manufacturing cost of the mixing plate or the mixing device can be reduced, and maintainability can be improved.

According to the mixing device of the present invention, it is possible to provide a mixing device capable of reducing manufacturing costs and improving maintainability while maintaining suitable mixing performance.

Schematic cross-sectional view showing the first embodiment of the mixing apparatus according to the present invention. Schematic front view of the mixing plate in the first embodiment A vertical sectional view showing one embodiment of each mixing hole of the mixing plate. Schematic cross-sectional view showing a bearing body supporting a mixing plate Schematic cross-sectional view showing a second embodiment of the mixing apparatus according to the present invention. Schematic front view of the second mixing plate in the second embodiment A vertical sectional view showing another form of each flow hole of the second mixing plate. Schematic cross-sectional view showing a third embodiment of the mixing apparatus according to the present invention. Schematic front view of the third mixing plate in the third embodiment Schematic cross-sectional view showing still another embodiment of the present invention. Based on Examples 1 and 2, the performance test results are shown by comparing the mixing plates having different diameters of the upstream circular holes of 6 mm and 7 mm, and (a) shows the time course of the measured value of the dissolved oxygen amount. (B) is the change characteristic graph. The performance test results are shown by comparing the mixing plates having different diameters of the upstream circular holes of 6 mm and 7 mm based on Examples 3 and 4, and (a) shows the time lapse of the measured value of the dissolved oxygen amount. (B) is the change characteristic graph. The performance test results are shown by comparing the mixing plates having different diameters of the upstream circular holes of 6 mm and 7 mm based on Examples 5 and 6, and (a) shows the time lapse of the measured value of the dissolved oxygen amount. (B) is the change characteristic graph. The performance test results are shown by comparing the mixing plates having different diameters of the upstream circular holes of 6 mm and 7 mm based on Examples 7 and 8, and (a) shows the time course of the measured value of the dissolved oxygen amount. (B) is the change characteristic graph. Based on Examples 9 and 10, the performance test results are shown by comparing the mixing plates having different diameters of the upstream circular holes of 6 mm and 7 mm, and (a) shows the time course of the measured value of the dissolved oxygen amount. (B) is the change characteristic graph.

Hereinafter, the mixing apparatus according to the present invention will be described with reference to the embodiments shown in the drawings.

(First Embodiment)

The first embodiment will be described with reference to FIGS.

As shown in FIG. 1, the mixing device 1 of the first embodiment has an inflow port 5a for inflowing a plurality of fluids into both openings 3a and 3b of the tubular body 3, or an outflow port 6a for discharging the mixed fluid. A mixing flow path 10 for mixing a plurality of inflowing fluids is formed in a casing 2 formed by arranging a pair of lids 5 and 6 formed by the above.

In the present embodiment, the tubular body 3 is formed in a substantially cylindrical shape, and flange portions 4 projecting laterally in a disk shape are integrally formed at the edge edges of both openings 3a and 3b. Each of the flange portions 4 is provided with a plurality of bolt insertion holes (not shown) through which bolts (not shown) for fixing the lids 5 and 6 are inserted. The tubular body 3 may have another shape such as a quadrangular cross section.

In the present embodiment, each of the lids 5 and 6 is formed in a substantially disk shape, and has a cylindrical shape in the center which is erected on the outside of the cylinder 3 and communicates with the inside of the cylinder 3. The inflow port 5a or the outflow port 6a is formed, and bolts are inserted into the peripheral edges corresponding to the bolt insertion holes formed in the flanges 4 of the cylinder 3 and fixed to the cylinder 3. A plurality of bolt insertion holes (not shown) are bored.

Then, preferably, a rubber seal (not shown) is interposed between each flange portion 4 of the tubular body 3 and each of the lid bodies 5 and 6, and bolts are inserted into and fastened to each bolt insertion hole. It is hermetically sealed.

The mixing flow path 10 is provided with a predetermined gap between the lids 5 and 6 in the cylinder 3, and in the present embodiment, the mixing flow path 10 has a predetermined interval in the flow direction of the fluid in the cylinder 3. It is formed by four mixing plates 11 arranged in parallel with each other.

As shown in FIGS. 1 and 2, each mixing plate 11 in the first embodiment is formed to have substantially the same diameter as the inner diameter of the tubular body 3, and the insertion hole 12 inserted into the shaft 16 is at the center. Is bored, and a plurality of mixing holes 13 (see FIG. 3) provided with a turbulent flow generating mechanism for flowing and mixing the fluid are bored on the entire surface of the disk at predetermined intervals.

A pair of bearing bodies 15 (see FIG. 4) fixed to the inner peripheral surface of the tubular body 3 by arbitrary fixing means (not shown) are arranged on the upstream and downstream sides of each of the four mixing plates 11. A support shaft 16 is hung between the bearing portions 15a at the center of each bearing body 15. Then, the insertion hole 12 of each mixing plate 11 is inserted into the support shaft 16 supported in the center of the tubular body 3 in the fluid flow direction, and the ring-shaped spacer 14 is interposed between the mixing plates 11. Four mixing plates 11 are arranged in parallel with a predetermined interval.

In the present embodiment, each of the mixing holes 13 is a circular upstream circular hole 13a formed in the thickness direction from the upstream side in the fluid flow direction shown on the left side of the drawing, as shown in FIG. , The upstream circular hole 13a and the circular downstream circular hole 13b bored concentrically in the thickness direction from the downstream side in the fluid flow direction shown on the right side of the drawing are communicated with each other. The inner diameter of the downstream circular hole 13b is formed to be smaller than the inner diameter of the upstream circular hole 13a.

Each mixing hole 13 may be variously deformed according to the characteristics of the plurality of fluids to be mixed and the target mixing state.

For example, the width (length) of the upstream circular hole 13a in the thickness direction may be made larger than the width (length) of the downstream circular hole 13b in the thickness direction, or vice versa. In the example of FIG. 3, the lengths are the same. Further, it is preferable to form threads on both or one of the inner peripheral surfaces of the upstream circular hole 13a and the downstream circular hole, or to make the pitches of the threads different.

In the first embodiment, the mixing flow path 10 is composed of four mixing plates 11, but the number of mixing channels 10 can be set to an arbitrary number, and the fluid mixing accuracy is increased by increasing the number of sheets. be able to.

Further, a support shaft 16 extending in the fluid flow direction is arranged and arranged in the center of the cylinder 3 in the cylinder 3 of the casing 2, and the support is provided in the center of each of the mixing plates 11. An insertion hole 12 through which the shaft 16 is inserted is bored, and a ring-shaped spacer 14 formed to a predetermined thickness is interposed between the mixing plates 11, and the insertion hole 12 of each of the mixing plates 11 and each of the above. Since the support shaft 16 is inserted through the spacer 14 and each of the mixing plates 11 is supported in the tubular body 3, the entire device can be made simple and disassembly and assembly can be facilitated.

Further, a pair of bearing bodies 15 in which the support shaft 16 is detachably arranged on the inner peripheral surface of the tubular body 3 with a predetermined gap provided between the lid bodies 5 and 6 of the casing 2. Each bearing body 15 is formed to have substantially the same diameter as the inner diameter of the tubular body 3, an opening 15b for allowing fluid to flow over almost the entire surface is formed, and an end portion of the support shaft 16 is formed. Since the bearing portion 15 for holding the above is formed, the entire device can be further simplified, and disassembly and assembly can be facilitated.

Next, the operation of the mixing device 1 of the first embodiment will be described.

In FIG. 1, a plurality of fluids are pumped in from the inflow port 5a of the lid 5 on the left side by a pumping device (not shown) such as a pump. While the plurality of fluids are pumped through the cylinder 3 of the casing 2, in the first embodiment, they are circulated through the mixing holes 13 of the four mixing plates 11. Then, the plurality of fluids are compressed and accelerated in the upstream circular holes 13a and the downstream circular holes 13b having different diameters of the mixing holes 13, and collide, disperse, and merge between the plurality of mixing plates 11 and in the mixing holes 13. Etc. are repeated, and a plurality of fluids are finely mixed.

Further, by concentrically drilling circular holes 13a and 13b having different diameters in the mixing holes 13 of the mixing plate 11 so as to communicate with each other, it is possible to maintain sufficient contraction acceleration performance by a simple structure. At the same time, the formation of each mixing hole 13 can be facilitated, the manufacturing cost of the mixing plate 11 or the mixing device 1 can be reduced, and the maintainability can be improved.

The plurality of fluids may be either a liquid or a gas, and may be, for example, seawater and oxygen. In this case, when the high-concentration oxygen generated by the oxygen generator and seawater are simultaneously pumped to the inflow port 5a of one lid 5 of the mixing device 1 of the first embodiment, the other lid 6 is pumped. Seawater containing high-concentration oxygen mixed with high definition can be obtained from the outlet 6a. In this case, the oxygen is in the form of nanobubbles.

(Second Embodiment)

Next, the second embodiment of the mixing apparatus according to the present invention will be described with reference to FIGS. 5 to 7. The parts having the same configuration as those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 5, the mixing device 21 of the second embodiment has an inflow port 5a for inflowing a plurality of fluids into both openings 3a and 3b of the tubular body 3, or an outflow port 6a for discharging the mixed fluid. A mixing flow path 30 for mixing a plurality of inflowing fluids is formed in a casing 2 formed by arranging a pair of lids 5 and 6 formed by the above.

The mixing flow path 30 is provided with a predetermined gap between the lids 5 and 6 in the cylinder 3, and in the present embodiment, the mixing flow path 30 has a predetermined interval in the flow direction of the fluid in the cylinder 3. A second mixing plate arranged in parallel with a predetermined interval on the upstream side of the four mixing plates 11 arranged in parallel with each other and the mixing plate 11 arranged on the most upstream side in the fluid flow direction. It is composed of 31 and.

As shown in FIG. 6, the second mixing plate 31 in the second embodiment is formed to have the same diameter as the mixing plate 11, and an insertion hole 33 through which the support shaft 16 is inserted is formed in the center. At the same time, a plurality of circulation holes 32 formed in a circular shape on a virtual ring concentric with the outer circumference are formed by arranging them evenly at predetermined intervals.

As another form of the flow hole 32, as shown in FIG. 7, it is preferable to form the flow hole 32 in a tapered shape in which the diameter becomes smaller from the upstream side to the downstream side. With such a configuration, the fluid can be further compressed and accelerated.

In the second embodiment, the mixing flow path 30 is a second one arranged parallel to the upstream side of the four mixing plates 11 arranged in parallel and the mixing plate 11 arranged on the most upstream side. Although it is composed of a mixing plate 31, the number of mixing plates 11 may be arbitrary.

Next, the operation of the mixing device 1 of the second embodiment will be described.

In the second embodiment, as in the first embodiment, the plurality of fluids flowing through the mixing holes 13 of the mixing plate 11 are the upstream circular holes 13a and the downstream circular holes 13a having different diameters of the mixing holes 13. The contraction is accelerated at 13b, and collision, dispersion, merging, and the like are repeated between the plurality of mixing plates 11 and at each mixing hole 13, so that the plurality of fluids can be finely mixed.

Further, a plurality of fluids flowing into the casing 2 from the inflow port 5a are accelerated by the flow holes 32 of the second mixing plate 31 and collide with the mixing plate 11 on the upstream side in the fluid flow direction. Dispersion, merging, and the like are repeated, and the mixing performance of each mixing plate 11 can be improved.

Further, the mixing holes 13 of the mixing plate 11 are concentrically bored with circular holes 13a and 13b having different diameters to communicate with each other, and the flow holes 32 of the second mixing plate 31 are connected to the second mixing plate 31. By forming the holes at equal intervals on the virtual ring concentric with the outer circumference of the above, sufficient contraction acceleration performance can be maintained by a simple configuration, and the mixing holes 13 and the flow holes 32 can be maintained. The formation can be facilitated, the manufacturing cost of each of the mixing plates 11, 31 or the mixing device 1 can be reduced, and the maintainability can be improved.

(Third Embodiment)

Next, a third embodiment of the mixing device according to the present invention will be described with reference to FIGS. 8 and 9. The parts having the same configuration as those of the first embodiment and the second embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIGS. 8 and 9, the mixing device 41 of the third embodiment has an inflow port 5a for inflowing a plurality of fluids into both openings 3a and 3b of the tubular body 3, or a flow for discharging the mixed fluid. A mixing flow path 50 for mixing a plurality of inflowing fluids is formed in a casing 2 formed by arranging a pair of lids 5 and 6 on which an outlet 6a is formed.

The mixing flow path 50 is provided with a predetermined gap between the lids 5 and 6 in the cylinder 3, and at least two are arranged continuously in the fluid flow direction in the cylinder 3. It is composed of (four in this embodiment) mixing units 51. In the present embodiment, each of the mixing units 51 includes four mixing plates 11 arranged in parallel in the fluid flow direction in the cylinder 3 at predetermined intervals, and the most upstream flow in the fluid flow direction. A second mixing plate 31 arranged in parallel with a predetermined interval on the upstream side of the mixing plate 11 arranged on the side, and a predetermined mixing plate 11 on the downstream side of the mixing plate 11 arranged on the most downstream side in the fluid flow direction. It is composed of a third mixing plate 52 arranged in parallel at intervals of.

As shown in FIG. 9, the third mixing plate 52 is formed to have a smaller diameter than the mixing plate 11 and the second mixing plate 31, and a slight gap is provided between the third mixing plate 52 and the inner peripheral surface of the cylinder 3. An insertion hole 53 through which the support shaft 16 is inserted is formed in the center.

Next, the operation of the mixing device 1 of the third embodiment will be described.

In the third embodiment, as in the first embodiment, the plurality of fluids flowing through the mixing holes 13 of the mixing plate 11 are the upstream circular holes 13a and the downstream circular holes 13a having different diameters of the mixing holes 13. The contraction is accelerated at 13b, and collision, dispersion, merging, and the like are repeated between the plurality of mixing plates 11 and at each mixing hole 13, so that the plurality of fluids can be finely mixed.

Further, as in the second embodiment, the plurality of fluids flowing into the casing 2 from the inflow port 5a are accelerated by the flow holes 32 of the second mixing plate 31, and the second mixing plate 31 and the fluid are combined. Collision, dispersion, merging, etc. are repeated with the mixing plate 11 on the most upstream side in the flow direction, and the mixing performance of the mixing plates 11 and 31 can be improved.

Further, the fluid mixed by flowing through each mixing hole 13 of the mixing plate 11 on the most downstream side in the flow direction of the fluid collides with the third mixing plate 52 and is diverted to the outer peripheral side of the third mixing plate 52. 3 The second mixing plate 31 of the third mixing plate 52 and the mixing unit 51 on the downstream side is further accelerated by flowing through the gap between the outer circumference of the mixing plate 52 and the inner peripheral surface of the tubular body 3 of the casing 2. Alternatively, by colliding with the lid 6, the fluid mixed by the mixing plates 11, 31, and 52 can be mixed more finely.

Further, the mixing holes 13 of the mixing plate 11 are concentrically bored with circular holes 13a and 13b having different diameters to communicate with each other, and the flow holes 32 of the second mixing plate 31 are formed on the outer periphery of the second mixing plate 31. The structure is simple because the third mixing plate 52 is formed to have a diameter smaller than that of the mixing plate 11 and the second mixing plate 31 in a configuration in which the third mixing plate 52 is formed at equal intervals on a virtual ring concentric with the above. Depending on the configuration, sufficient contraction acceleration performance can be maintained, and the formation of each mixing hole 13 and each flow hole 32 can be facilitated, and the mixing plates 11, 31, 52 or the mixing devices 1, 21, 41 can be easily formed. It is possible to reduce the manufacturing cost of the product and improve the maintainability.

In the present invention, each of the above configurations may be changed in various ways.

For example, as shown in FIG. 10, only the bearing bodies 15 in the third embodiment of FIG. 8 are formed to have a larger diameter, and cylindrical spacers 60a, 60b, 60c arranged on the inner circumference of the tubular body 3 are provided. It may be held tightly and fixed. This makes it easier to disassemble and assemble the device.

Further, the turbulent flow generation mechanism provided to the mixing hole 13 may have any configuration as long as it has a function of generating turbulent flow in two or more types of fluids flowing through the mixing hole and mixing them. Can be adopted. For example, a screw thread or serration may be formed on the inner surface without providing a step in the middle of the mixing hole 13 in the longitudinal direction.

Further, it is preferable that each of the mixing holes 13 of the mixing plate 11 is formed so that the diameter of the upstream circular hole 13a is 6.0 mm and the diameter of the downstream circular hole 13b is 5.0 mm.

By adopting such a configuration, it is possible to obtain suitable contraction acceleration for mixing a plurality of fluids flowing through each mixing hole 13 in an ultrafine manner.

Further, each of the mixing holes 13 of the mixing plate 11 is formed so that the width of the upstream circular hole 13a in the thickness direction of the mixing plate 11 is wider or narrower than the width of the downstream circular hole. It is possible to improve the contraction acceleration performance of the fluid flowing through each mixing hole 13.

Further, a screw thread that circulates in the circumferential direction is projected on the inner peripheral surface of the upstream circular hole 13a of each mixing hole 13 of the mixing plate 11, and the height of the screw thread is the upstream circular hole 13a. It is preferable that the difference between the diameter and the diameter of the downstream circular hole 13b is less than half.

By adopting such a configuration, the mixing accuracy can be improved by the disturbing action of the screw thread.

Further, a screw thread that circulates in the circumferential direction is provided on the inner peripheral surface of the downstream circular hole 13b of each mixing hole 13 of the mixing plate 11, and the height of the screw thread is the upstream circular hole 13a. It is preferable that the difference between the diameter and the diameter of the downstream circular hole 13b is less than half.

By adopting such a configuration, the mixing accuracy can be improved by the disturbing action of the screw thread.

Further, threads that circulate in the circumferential direction are provided on the inner peripheral surfaces of the upstream circular hole 13a and the downstream circular hole 13b of each mixing hole 13 of the mixing plate 11, and the height of each thread is high. It is preferable that the diameter is less than half of the difference between the diameter of the upstream circular hole 13a and the diameter of the downstream circular hole 13b.

By adopting such a configuration, the mixing accuracy can be improved by the disturbing action of the screw thread.

Further, the diameter on the downstream side of each flow hole 32 of the second mixing plate 31 may be larger than the diameter of the upstream circular hole 13a of each mixing hole 13 of the mixing plate 11.

By adopting such a configuration, expansion and contraction of the fluid flow path between each flow hole 32 and the upstream circular hole 13a can be formed, and the fluid mixing accuracy can be improved.

Further, it is preferable that the diameter of each flow hole 32 of the second mixing plate 31 on the upstream side is about 11% of the diameter of the second mixing plate 31.

By adopting such a configuration, the fluid can be accelerated.

When a fluid treatment system is formed by using the mixing devices 1, 21, and 41 according to the present invention, for example, a gas generator that supplies a high-purity gas as one of the fluids, the mixing device, and the above. It is preferable to include a pump which is connected to the gas generator and applies pressure to supply the liquid as one of the fluids together with the gas generated by the gas generator to the mixing device.

Next, an example of the mixing apparatus of the present invention will be described.

In this embodiment, two types of mixing plates 11a and 11b, one type of second mixing plate 31 and one type of third mixing plate 51 are incorporated in one type of casing 2 in various combinations. It is formed.

The casing 2 is basically formed in the shape shown in FIG. 1, has an inner diameter of 140 mm and a length of 380 mm, and has an inlet 5a of the lid 5 and an outlet 6a of the lid 6. Each has an inner diameter of 38 mm.

The mixing plate 11a is basically formed in the shapes shown in FIGS. 2 and 3, and has a disk thickness of 10 mm, an outer diameter of 139 mm, and an inner diameter of the insertion hole 12 of 15 mm, for a total of 234 mixing holes 13. The inner diameter of the upstream circular hole 13a is 6 mm (M6 threads (either forward or reverse) are formed), and the inner diameter of the downstream circular hole 13b is 5 mm.

The mixing plate 11b is the same as the mixing plate 11a except that the inner diameter of the circular hole 13a on the upstream side of the mixing hole 13 of the mixing plate 11a is 7 mm (a thread of m7 (either forward or reverse) is formed). is there.

The second mixing plate 31 is basically formed in the shapes shown in FIGS. 6 and 7, and has a disk thickness of 10 mm, an outer diameter of 139 mm, and an inner diameter of the insertion hole 32 of 15 mm, for a total of 6 distributions. The inner diameter of the tapered upstream side of the hole 32 is 20 mm, and the inner diameter of the downstream side is 14 mm.

The third mixing plate 52 is basically formed in the shape shown in FIG. 9, and has a disk thickness of 10 mm, an outer diameter of 130 mm, and an inner diameter of the insertion hole 53 of 15 mm.

The shaft 16 for assembling the mixing plates 11a and 11b, the second mixing plate 31 and the third mixing plate 52 into the mixing flow paths 10, 30 and 50 has a diameter of 15 mm and a length of 350 mm, and the bearing body 15 has a bearing body 15. It is basically formed in the shape shown in FIG. 4, has a thickness of 10 mm and an outer diameter of 140 mm, and the spacer 14 has a thickness of 2 mm and an outer diameter of 25 mm.

The combinations of the mixing plates 11a and 11b, the second mixing plate 31 and the third mixing plate 51 in Examples 1 to 10 of the mixing flow path were as follows.
Example 1: Eight sheets of forward mixing plate 11a arranged in series Example 2: Eight sheets of forward mixing plate 11b arranged in series Example 3: Eight sheets of reverse mixing plate 11a arranged in series (reverse direction is upstream and downstream) Is a reversal)
Example 4: Eight sheets of reverse mixing plate 11b arranged in series Example 5: Four sheets of forward mixing plate 11a arranged in series Example 6: Four sheets of forward mixing plate 11b arranged in series Example 7: Forward 8 series arrangement of alternating forward and reverse mixing plates 11a Example 8: 8 series arrangement of alternating forward and reverse mixing plates 11b Example 9: Two sets of mixing units of FIG. 8 using forward and reverse alternating mixing plates 11a Series Arrangement Example 10: Two sets of mixing units of FIG. 8 using a forward mixing plate 11b arranged in series

The mixing apparatus of each of Examples 1 to 10 was placed in the fluid processing system and a performance test was performed.

Specifically, fresh water as one of the fluids is circulated and supplied from a water tank having a capacity of 500 liters by applying pressure to the mixing device of each embodiment at 350 liters / minute by a pump, and other than the gas generator. High-purity oxygen as one of the fluids is supplied to the mixing device together with fresh water at 4 liters / minute, and the dissolved oxygen amount (DO) (mg / liter) of the fresh water in the water tank sent from the mixing device is dissolved. Measured with an oxygenometer.

The performance test results are shown in FIGS. 11 to 15 by comparing the mixing plates 11a and 11b in which the diameters of the upstream circular holes 13a are different between 6 mm and 7 mm. (A) of FIGS. 11 to 15 shows the passage of time of the measured value of the dissolved oxygen amount, and (b) is a graph of the change characteristic.

According to the performance test results, the rate of generation of dissolved oxygen (time to reach about 45 mg / liter) of the mixing apparatus of Examples 1, 3, 5, and 7 using the mixing plate 11a having a diameter of 6 mm in the upstream circular hole 13a. ), The rate of generation of dissolved oxygen (time to reach about 45 mg / liter) of the mixers of Examples 2, 4, 6 and 8 using the mixing plate 11b having a diameter of 7 mm in the upstream circular hole 13a is 2 respectively. The relationship was ~ 4 minutes earlier. It is considered that this is because the shrinkage-proof rate of the entire device is high due to the large reduction rate of the fluid by the mixing plate 11b, which has a large difference between the upstream circular hole 13a and the downstream circular hole 13b.

According to the performance test results, the generation rate (generation efficiency) of dissolved oxygen of the mixing apparatus of Examples 1, 3, 5, and 7 using the mixing plate 11a having a diameter of 6 mm in the upstream circular hole 13a is about 45 mg / Judging from the speed of reaching liters, the relationship was as follows.
Example 1: Approximately 9 minutes <Example 3: Approximately 12 minutes <Example 5 ≒ Example 7: Approximately 14 to 15 minutes The larger the number of mixing plates 11a arranged, the faster the dissolved oxygen is generated, which is forward. Dissolved oxygen tends to be generated faster in the case than in the opposite direction.

According to the performance test results, the generation rate (generation efficiency) of dissolved oxygen in the mixers of Examples 2, 4, 6 and 8 using the mixing plate 11b having a diameter of the upstream circular hole 13a of 7 mm was all carried out. In the example, the rate of generation of dissolved oxygen was almost the same. Further, as shown in Examples 9 and 10, when the mixing unit uses the second mixing plate 31 and the third mixing plate 51 in addition to the mixing plates 11a and 11b, the mixing unit is more mixed than the case where only the mixing plates 11a and 11b are used. It was found that the rate of generation of dissolved oxygen in the device was high.

When the fresh water in the water tank where the dissolved oxygen amount reached about 45 mg / liter was visually observed, it was transparent, and when the fresh water was irradiated with a red laser beam with a laser pointer, the red laser beam was seen, so the dissolved oxygen became nanobubbles and browned. It was recognized that he was exercising. Furthermore, the state of fresh water in the water tank did not change even after 1 to 2 weeks after the experiment, and it was confirmed that the dissolved oxygen became nanobubbles and performed Brownian motion.

From the above examples, the diameter of the upstream circular hole 13a of each mixing hole 13 of the mixing plate 11 is formed to be 6.0 to 7/0 mm, and the diameter of the downstream circular hole 13b is formed to 5.0 mm. It should be done.

The present invention is not limited to the above-described embodiments and examples, and various modifications can be made as necessary.

1, 21, 41 Mixing device 2 Casing 3 Cylindrical body 5, 6 Lid body 10, 30, 50 Mixing flow path 11, 11a, 11b Mixing plate 13 Mixing hole 13a Upstream circular hole 13b Downstream circular hole 31 Second mixing plate 32 Flow hole 51 Mixing unit 52 Third mixing plate

Claims (5)

A mixing flow path is formed in a casing in which a lid having an inflow port or an outflow port through which a fluid flows is formed at both ends of the cylinder, and pressure is applied to flow into the casing from the inflow port. In a mixing device in which two or more fluids are mixed by passing through the mixing flow path and flowed out from the outlet.
The mixing flow path
A predetermined gap is provided between each lid of the casing, and the casing is composed of one plate or two or more mixing plates arranged in parallel at a predetermined distance in the flow direction of the fluid.
Each of the mixing plates
A plurality of mixing holes, which are formed to have substantially the same diameter as the inner diameter of the cylinder of the casing and have a turbulent flow generation mechanism, are bored on the entire surface of the inner portion from the outer peripheral edge of the mixing plate at predetermined intervals. In addition, each of the mixing holes is concentrically downstream with the upstream circular hole formed in the fluid flow direction from the upstream side in the thickness direction and the upstream circular hole having a smaller diameter than the upstream circular hole. A mixing device characterized in that it is configured by communicating with a circular hole on the downstream side drilled from the side in the thickness direction. A mixing flow path is formed in a casing in which a lid having an inflow port or an outflow port through which a fluid flows is formed at both ends of the cylinder, and pressure is applied to flow into the casing from the inflow port. In a mixing device in which two or more fluids are mixed by passing through the mixing flow path and flowed out from the outlet.
The mixing flow path
A predetermined gap is provided between each lid of the casing, and one of the two or more mixing plates arranged in parallel with each other at a predetermined interval in the flow direction of the fluid and each of the mixing plates. are composed of a second mixing plate arranged in parallel at predetermined intervals on the upstream side of the mixing plate disposed on the most upstream side,
The mixing plate
A plurality of mixing holes, which are formed to have substantially the same diameter as the inner diameter of the cylinder of the casing and have a turbulent flow generation mechanism, are bored on the entire surface of the inner portion from the outer peripheral edge of the mixing plate at predetermined intervals. In addition, each of the mixing holes is concentrically downstream with the upstream circular hole formed in the fluid flow direction from the upstream side in the thickness direction and the upstream circular hole having a smaller diameter than the upstream circular hole. It is configured by communicating with a circular hole on the downstream side drilled from the side in the thickness direction.
The second mixing plate
A mixing device having the same diameter as the mixing plate, and having a plurality of flow holes penetrating in the thickness direction formed at equal intervals on a virtual ring arranged concentrically with the outer circumference. A mixing flow path is formed in a casing in which a lid having an inflow port or an outflow port through which a fluid flows is formed at both ends of the cylinder, and pressure is applied to flow into the casing from the inflow port. In a mixing device in which two or more fluids are mixed by passing through the mixing flow path and flowed out from the outlet.
The mixing flow path
A predetermined gap is provided between each lid of the casing, and the casing is composed of two or more mixing units arranged in parallel with a predetermined interval in the flow direction of the fluid.
Each of the mixing units
A plurality of mixing holes, which are formed to have substantially the same diameter as the inner diameter of the cylinder of the casing and have a turbulent flow generation mechanism, are bored on the entire surface of the inner portion from the outer peripheral edge of the mixing plate at predetermined intervals. Two or more mixing plates arranged in parallel with each other at a predetermined interval in the flow direction of the sheets or fluids.
A plurality of flow holes formed with the same diameter as the mixing plate and penetrating in the thickness direction are bored at equal intervals on a virtual annulus arranged concentrically with the outer circumference, and the uppermost stream of each of the mixing plates. A second mixing plate arranged in parallel with a predetermined interval on the upstream side of the mixing plate arranged on the side,
A third mixing plate having a diameter smaller than that of each of the mixing plates and the second mixing plate and arranged at a predetermined interval on the downstream side of the mixing plate arranged on the most downstream side of the mixing plates. A mixing device characterized in that it is composed of a plate. Each mixing hole of the mixing plate is concentric with the upstream circular hole formed in the thickness direction from the upstream side in the fluid flow direction and the upstream circular hole having a smaller diameter than the upstream circular hole. The mixing device according to claim 3 , further comprising communicating with a downstream circular hole drilled from the downstream side in the thickness direction. The first, second, and fourth aspects of the mixing plate, wherein the diameter of the upstream circular hole is 6 to 7 mm, and the diameter of the downstream circular hole is 5 mm. The mixing device according to any one of the following items.

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