JP2012055891A - Fining mixing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fining mixing device which is simple in constitution and easy in size reduction, and can be manufactured inexpensively.SOLUTION: The fining mixing device 1 comprises a vibration orifice member 3 in a passage pipe 2 which constitutes a passage 20. The vibration orifice member 3 is formed of a seal ring 4 and a vibration orifice plate 5, sandwiched by an inlet pipe 21 and an outlet pipe 22 which are screwed with each other, and fixed. The vibration orifice plate 5 is composed of a stainless steel disc, and has a concentric circular penetration hole 51 and radial slits 52, 52, ... continued to the penetration hole 51. A mixed fluid in which air and water are mixed in advance flows in from an inlet opening 21a of the inlet pipe 21 of the passage pipe 2, and receives an abrupt contraction operation and a vibration operation when passing the penetration hole 51 of the vibration orifice plate 5 of the vibration orifice member 3. Then, air is fined and a micro-nanobubble whose diameter is 10 nm to several tens μm is generated.

Description

  The present invention relates to a miniaturized mixing apparatus that generates, for example, a mixed fluid in which fine bubbles are dispersed in a liquid or a mixed fluid in which fine particles of another liquid are dispersed in a liquid.

  2. Description of the Related Art Conventionally, a mixed fluid obtained by refining a fluid and dispersing it in another fluid has been utilized in many technical fields because particles of the refined fluid exhibit different physical properties from those in a bulk state.

  For example, research has been conducted on the use of nanobubble water obtained by dispersing nanobubbles having a diameter of about 10 nm to several 100 nm in water for purification of sewage, growth promotion in aquaculture, and promotion of plant cultivation. As a method for generating nanobubble water, a method using a gas-liquid shearing method in which a shear force is applied to a mixed fluid of water and air to generate nanobubbles is known. As a gas-liquid shearing type nanobubble generating device, a cylindrical screw has an upstream screw part having a spirally formed flow path, and a downstream cutter part in which protrusions are arranged on the flow path wall; (For example, refer to Patent Document 1).

  In this nanobubble generator, after the swirl force and centrifugal force are applied to the mixed fluid of air and water pumped into the casing by the pump, the bubbles in the mixed fluid are divided and refined by the cutter unit. The gas-liquid mixed fluid containing fine bubbles having a diameter of about 0.5 to 3 μm is discharged.

  In addition, it has been studied to reduce generation of CO, NOx, and the like by using a water-oil emulsion as a fuel for a diesel engine, a turbine engine, or a boiler. The water-oil emulsion is obtained by refining water or oil to a diameter of submicron order and dispersing it in oil or water. Generally, an emulsifier is added to suppress separation of water and oil. As an apparatus for producing a water-oil emulsion, there is an apparatus in which a tubular porous glass film in which numerous nanometer-order micropores are formed is installed in a cylindrical casing (see, for example, Patent Document 2).

  This water-oil emulsion generator passes through the micropores by pumping oil between the casing and the porous glass membrane in a state where the water to which the emulsifier has been added flows in the tubular porous glass membrane. A fine oil is mixed with water to produce a water oil emulsion.

JP 2002-085949 A Japanese Patent No. 2733729

  However, the nanobubble generating device described in Patent Document 1 has a spiral flow path in the screw part in the casing and a flow path in which a protrusion is provided in the cutter part. There is a problem of increasing the size and cost. In addition, since the pressure loss of the spiral flow path and the flow path provided with the protrusion is relatively large, it is necessary to set the pumping pressure of the mixed fluid by the pump high, and as a result, the pressure resistance of the piping system needs to be increased. There is a problem of incurring high costs.

  On the other hand, the water-oil emulsion generator described in Patent Document 2 gives a pressure difference between the front and back surfaces of the porous glass membrane and refines the water or oil by an extruding action. There is a problem that the surface area of the glassy glass film is required, resulting in an increase in the size of the apparatus. In addition, when miniaturization is performed, it takes time for water or oil to pass through the fine pores, and there is a problem that the generation efficiency of the fine particles is poor. Further, since the porous glass film is easily broken, there is a problem that it is difficult to apply to a vehicle engine or the like. Furthermore, there is a disadvantage that harmful substances are generated during combustion due to the emulsifier added to the water oil emulsion.

  Accordingly, an object of the present invention relates to a miniaturization mixing apparatus that generates a miniaturized mixed fluid by miniaturizing at least one fluid and dispersing it in another fluid, which is simple in structure, easy to downsize, and inexpensive. Another object is to provide a miniaturized mixing apparatus that can be manufactured. Another object of the present invention is to provide a fine mixing device that is not easily damaged and has good durability. It is another object of the present invention to provide a fine mixing device that can reduce generation of harmful substances due to combustion of the fine mixed fluid when the generated fine mixed fluid is used as fuel.

In order to solve the above-described problem, a miniaturization mixing apparatus according to the present invention generates a miniaturized mixed fluid by miniaturizing at least one of mixed fluids in which a plurality of types of fluids are mixed in advance. Because
A channel through which the mixed fluid is guided;
It is characterized by comprising a reduced vibration member that is disposed in the middle of the flow path and has a reduced passage having a cross section smaller than the cross section of the flow path and a vibrating body surrounding the reduced passage.

  According to the above configuration, the mixed fluid guided to the flow path is refined by at least one kind of fluid by the rapid contraction action when passing through the reduction passage of the reduction vibration member and the vibration action by the vibrating body. The refined fluid is diffused into other fluids to generate a fine mixed fluid. As described above, the miniaturization mixing apparatus of the present invention is configured with a relatively simple structure using a reduced vibration member having a reduced passage and a vibrating body, and thus can be easily reduced in size and at a relatively low cost. Can be made.

  Further, since the pressure reduction mainly occurs in the reduction passage in the miniaturized mixing device of the present invention, for example, the pressure loss amount is lower than that of the conventional nanobubble generation device that flows down the spiral passage and the flow path provided with the protrusion. Few. Accordingly, since the supply pressure of the mixed fluid to the miniaturized mixing apparatus can be lowered, the pressure resistance standard of the piping system that supplies the mixed fluid can be lowered, and the cost can be reduced.

  In addition, since the micronizing and mixing apparatus of the present invention performs fluid micronization by rapid contraction and vibration action by the reduced vibration member, for example, it can be made smaller than a water-oil emulsion generator using a porous glass membrane, Further, the generation time of fine particles can be shortened to improve efficiency. Furthermore, since the flow path and the reduced vibration member can be formed of a resin material or a metal material, it is less likely to be damaged than a conventional water-oil emulsion generator formed of, for example, a porous glass film, and good durability is obtained.

  In addition, since the micronizing and mixing apparatus of the present invention performs micronization of the fluid by rapid contraction and vibration action by the reducing vibration member, for example, the oil or water is micronized with respect to the mixed fluid of oil and water to generate an emulsion. Even in this case, an emulsifier is unnecessary. Therefore, when the refined mixed fluid generated by this refined mixing apparatus contains oil and water and is used as fuel, it is possible to prevent generation of harmful substances due to the emulsifier.

  In the present invention, the plurality of types of fluids forming the mixed fluid may be either gas or liquid, and the mixed fluid may be formed of a plurality of gases and a plurality of liquids. A mixed fluid may be formed with a plurality of liquids.

  In the present invention, the term “miniaturization” means that the particle size of the fluid is reduced to a range of 10 nm to several tens of μm. For example, when the object of miniaturization is a gas, it means generating micro-nano bubbles having a diameter of 10 nm to several tens of μm, and preferably generating nano bubbles of 10 nm to several 100 nm.

In one embodiment, the reduction vibration member includes a plate-like body, a through-hole formed in the plate-like body, and a notch formed in the plate-like body connected to the through-hole. And
The through hole is a reduction passage, and the adjacent portion of the plate-like body is a vibrating body.

  According to the above embodiment, the reduced passage and the vibrating body can be integrally formed by forming the through-hole and the cut continuous with the through-hole in the plate-like body. Therefore, since the micro-vibration member can be manufactured with a small number of parts, the micro-vibration member can be easily manufactured, and the micro-vibration member can be miniaturized and miniaturized and mixed. Easy assembly of the device. Furthermore, by appropriately changing the notch dimensions, it is possible to form vibrators having different vibration modes, and therefore, vibrators having a plurality of vibration modes can be manufactured at low cost with little effort.

  In the present invention, the shape of the cutout of the reduced vibration member is not particularly limited, and various shapes such as an elongated slit shape and an equilateral cutout shape can be set. In short, the shape of the cut is not limited as long as the adjacent portion of the cut of the plate-like body can be vibrated by the cut continuous with the through hole. Here, it is preferable that a plurality of cuts in the plate-like body are regulated and the portion between the cuts in the plate-like body is a vibrating body because the frequency mode of the vibrating body can be easily set.

In the miniaturization mixing apparatus of another embodiment, the reduced vibration member has a plate-like body and a plurality of through holes formed in the plate-like body,
The plurality of through holes are reduced passages, and adjacent portions of the plurality of through holes of the plate-like body are vibrating bodies.

  According to the said embodiment, the rapid contraction effect | action and vibration effect | action with respect to mixed fluid can be show | played by forming a some through-hole in a plate-shaped object. Here, it is preferable that the through holes have different diameters and are unevenly distributed on the plate-like body.

  The miniaturization mixing apparatus of one embodiment includes a plurality of reduced vibration members in the axial direction of the flow path.

  According to the above-described embodiment, a finely-mixed mixed fluid can be effectively obtained by sequentially applying a rapid contracting action and a vibrating action to the mixed fluid flowing through the flow path by the plurality of reducing vibration members. Here, by changing the number of reduction vibration members installed according to the type of fluid contained in the mixed fluid, it is possible to deal with various uses using the same component. Further, by changing the number of reduced vibration members in accordance with the particle size to be generated, a refined mixed fluid having fine particles having various particle sizes can be obtained using the same component. As described above, by standardizing the reduced vibration member and the flow path forming member, a finely mixed fluid having a wide range of uses and particle diameters can be provided at low cost.

  The miniaturization mixing apparatus of one embodiment is provided with a buffer container that is connected in the vicinity of the reduced vibration member of the flow path and is formed so that the mixed fluid flows between the flow path and the flow path.

  According to the embodiment, the boundary surface is formed between the mixed fluid and the gas in the buffer container, so that the mixed fluid is buffered and the miniaturization of the mixed fluid by the reduced vibration member is promoted. Can do. Note that the gas forming the boundary surface with the mixed fluid in the buffer container may be a fluid contained in the mixed fluid or may be air. Further, a resonance effect may be obtained between the buffer container and the reduced vibration member. For example, the frequency obtained based on the dimensions of the buffer container can be set to a value corresponding to the frequency of the vibrating body.

The miniaturization mixing apparatus of one embodiment includes a plurality of reduced vibration members in the axial direction of the flow path,
The buffer container is provided in at least one place between the plurality of reduced vibration members.

  According to the above embodiment, the buffer container can be appropriately installed between the plurality of reduced vibration members, thereby promoting the miniaturization of the mixed fluid by the reduced vibration members. In addition, by standardizing the buffer container together with the reduced vibration member and the flow path forming member, the combination of the reduced vibration member, the flow path forming member and the buffer container can be set as appropriate. A miniaturized mixing apparatus can be manufactured at a relatively low cost.

In one embodiment, the miniaturization mixing device has a through hole of the reduced vibration member formed in a polygon,
The cuts of the reduced vibration member are formed so as to extend in parallel to each other by two corresponding to each side from both ends of one side of the polygonal through hole.

  According to the above embodiment, a rectangular vibrating body can be formed for each side of a polygonal through hole between two cuts extending in parallel from both ends of the side.

  In the miniaturization mixing apparatus of one embodiment, the reduction passage of the reduction vibration member is formed in a tapered shape whose diameter is increased on the downstream side.

  According to the embodiment, since the pressure loss of the mixed fluid can be reduced, the refinement efficiency of the mixed fluid can be improved. Here, the tapered portion of the reduction passage may be a part on the outlet side or the entire reduction passage.

  In the miniaturized mixing apparatus of one embodiment, the mixed fluid is a mixture of a gas phase first fluid and a liquid phase second fluid.

  According to the embodiment, a finely mixed fluid obtained by diffusing fine bubbles of a gas phase first fluid into a liquid second fluid is obtained. Here, when the first fluid is air and the second fluid is water, micro-nano bubble water used for purification of sewage, promotion of cultivation growth, and promotion of plant cultivation is obtained. In particular, water containing nanobubbles of ozone can maintain a bactericidal effect and the like for over a month. Moreover, the activity effect with respect to a living body is recognized by the water which contains oxygen and oxygen is added. Therefore, nanobubbles and micro-nanobubbles can be expected to be used particularly in medicine, food processing, agriculture and fisheries industries, and the like.

  Here, when microbubbles of the first fluid are diffused into the water of the second fluid to produce a fine mixed fluid, electrolyte ions are added to the water, and the microbubbles are crushed in the water containing the electrolyte ions. In particular, nanobubbles can be stably generated. This is presumably because the electrostatic repulsion of the charges accumulated at the bubble interface and ions acted as a shell enclosing the bubble.

  In the miniaturized mixing apparatus of one embodiment, the liquid mixture is a mixture of a liquid first fluid and a liquid second fluid.

  According to the above embodiment, a finely mixed fluid obtained by diffusing fine particles of the first fluid in the liquid phase into the second fluid in the liquid phase is obtained. Here, when the first fluid is oil and the second fluid is water, or when the first fluid is water and the second fluid is oil, the fuel, such as an engine, a turbine, a burner, or a boiler, is used. An applicable water-oil emulsion is obtained. In addition, when using a water-oil emulsion as a fuel, complete combustion of a fuel can be accelerated | stimulated by adding oxidizing agents, such as ozone, for example.

  According to the present invention, the fluid is rapidly contracted by the contracting passage of the contracting vibration member, and the fluid is vibrated by the vibrating body, whereby the fluid can be miniaturized with a simple structure and downsized. And a miniaturized mixing apparatus capable of reducing costs.

It is a longitudinal cross-sectional view which shows the refinement | mixing mixing apparatus of 1st Embodiment of this invention. It is a front view which shows the seal ring of a vibration orifice member. It is a front view which shows the vibration orifice plate of a vibration orifice member. It is a front view which shows the vibration orifice plate of a modification. It is a longitudinal cross-sectional view which shows the refinement | mixing mixing apparatus of 2nd Embodiment. It is a front view which shows the vibration orifice plate of a vibration orifice member. It is a front view which shows the vibration orifice plate of a modification. It is a longitudinal cross-sectional view which shows the refinement | mixing mixing apparatus of 3rd Embodiment. It is a longitudinal cross-sectional view which shows the refinement | miniaturization mixing apparatus of a modification. It is a longitudinal cross-sectional view which shows the refinement | miniaturization mixing apparatus of a modification. It is a top view which shows the vibration orifice board of the vibration orifice member of 4th Embodiment. It is sectional drawing of a vibration orifice plate. It is an expanded sectional view of the small through-hole of a vibration orifice plate. It is a figure which shows the fuel supply apparatus of 5th Embodiment.

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

(First embodiment)
FIG. 1A is a longitudinal sectional view showing a miniaturization mixing apparatus according to a first embodiment of the present invention. The fine mixing device 1 is a fine mixing device that generates micro / nano bubbles by making air as a gas fine and dispersing it in water as a liquid.

  The miniaturization mixing apparatus 1 includes a flow path tube 2 that forms a flow path 20 therein, and a vibrating orifice member 3 as a reduced vibration member that is installed in the flow path pipe 2 so as to cross the flow path 20. .

  The flow channel pipe 2 is a cylindrical pipe having a circular cross section, and is formed by an inlet pipe 21 on the inlet side of the mixed fluid and an outlet pipe 22 on the outlet side of the mixed fluid. The inlet pipe 21 and the outlet pipe 22 can be formed of a resin such as vinyl chloride or a metal such as stainless steel. The inlet pipe 21 has an inlet opening 21a at one end, and is connected to a supply pipe (not shown) for supplying a mixed fluid via a flange formed around the inlet opening 21a. The outlet pipe 22 has an outlet opening 22a at one end, and is connected via a flange around the outlet opening 22a to a discharge pipe (not shown) that discharges the mixed fluid after refinement.

  The other end of the inlet pipe 21 and the other end of the outlet pipe 22 are provided with spiral grooves that are screwed together. On the inner peripheral side of the other end of the inlet pipe 21, an annular step is provided adjacent to the spiral groove. An annular step is provided on the inner peripheral side of the other end of the outlet pipe 22 adjacent to the spiral groove. The vibrating orifice member 3 is sandwiched between the annular step portion of the inlet pipe 21 and the annular step portion of the outlet pipe 22, and the helical groove is screwed together, whereby the vibrating orifice member is interposed between the inlet pipe 21 and the outlet pipe 22. The member 3 is fixed.

  The vibrating orifice member 3 includes a seal ring 4 that seals against the inner peripheral surface of the flow channel tube 2, and a vibrating orifice plate 5 that is disposed on the inner peripheral side of the seal ring 4. FIG. 1B is a front view of the seal ring 4, and FIG. 1C is a front view of the vibrating orifice plate 5. The vibrating orifice plate 5 is formed with a through hole 51 and a slit 52 as a notch in a stainless steel disk. The stainless steel disk has a diameter of about 22 mm and a thickness of about 0.8 mm. The through hole 51 has a circular shape concentric with the vibrating orifice plate 5 and has a diameter of about 5 mm. The slit 52 is an elongated through hole extending in the radial direction from the peripheral surface of the through hole 51, and has a width of about 3 mm and a length of about 6 mm. Twelve slits 52 are provided and are radially arranged at equal angles. The portion of the vibrating orifice plate 5 between the twelve slits 52, 52,... Functions as a vibrating body.

  A premixing device for premixing air and water is connected to the upstream side of the supply pipe connected to the inlet pipe 21. The premixing device has, for example, a pump that pressurizes water and an ejector nozzle that is disposed on the discharge side of the pump and discharges air, so that air is mixed with the pressure water discharged from the pump by the ejector nozzle. What was formed can be used. In addition, as a premixing apparatus, you may use a well-known gas-liquid mixing pump.

  The above-mentioned fine mixing device 1 operates as follows. First, the premixing device is operated, and a mixed fluid, which is water containing bubbles, is supplied to the inlet pipe 21 via the supply pipe. The bubbles of the mixed fluid supplied from the premixing device preferably have a diameter of about several hundred μm to several millimeters. The mixed fluid preferably has a flow rate of about 1 to 50 L / min and a pressure of about 0.1 to 5 MPa at the inlet opening 21 a of the inlet pipe 21.

  As the mixed fluid flowing into the flow path 20 of the flow path pipe 2 from the inlet opening 21a passes through the through hole 51 of the vibrating orifice member 3, the flow velocity increases and the downstream pressure decreases. Due to this change and flow of pressure, the portion between the slits 52 of the vibrating orifice plate 5 vibrates. Due to the rapid contraction action when the mixed fluid passes through the through hole 51 and the vibration action of the vibrating orifice plate 5, the bubbles of the mixed fluid are refined, and micro-nano bubbles having a diameter of 10 nm to several tens of μm are generated. . Thus, the refined mixed fluid in which the micro / nano bubbles generated in the vibrating orifice member 3 are dispersed in water is discharged from the outlet opening 22a of the outlet pipe 22 to the discharge pipe.

  As described above, the miniaturization mixing apparatus 1 of the first embodiment can generate micro-nano bubbles with a relatively simple configuration including the vibrating orifice member 3 in the flow channel tube 2. Therefore, the miniaturization mixing apparatus 1 can be easily downsized, and can be produced with a small number of parts, so that cost reduction can be performed relatively easily. Moreover, the micronization mixing apparatus 1 of this embodiment has a smaller pressure loss than a nanobubble generating apparatus that includes a conventional swirling flow path and a flow path provided with protrusions. Therefore, since it can operate at a lower pressure and lower flow rate than the conventional one, the countermeasure against pressure resistance can be simplified, and the cost can be reduced.

  Further, in the micronizing / mixing device 1 of the present embodiment, the vibrating orifice member 3 that performs bubble miniaturization is fixed between the inlet pipe 21 and the outlet pipe 22 that are screwed together. Can be easily performed, and maintenance labor can be reduced. Further, since the miniaturized mixing apparatus 1 has a cylindrical shape having substantially the same diameter as the supply pipe and the discharge pipe for the mixed fluid, it can be effectively downsized. Accordingly, it is possible to reduce the size of various apparatuses to which the miniaturization mixing apparatus 1 is applied.

  The refined mixed fluid containing micro / nano bubbles generated by the refined mixing apparatus 1 has specific physicochemical characteristics as compared with water containing micron level bubbles. For example, water purification, growth promotion in aquaculture, It can be used to promote plant cultivation. In addition, the refinement | mixing mixing apparatus 1 of this embodiment can mix oxygen and another gas instead of air according to the intended purpose of refinement | mixing fluid.

  In the above embodiment, the vibrating orifice member 3 has various shapes depending on the type of gas to be refined, the type of fluid in which bubbles are dispersed, the size of bubbles to be mixed in advance, and the flow rate of the mixed fluid. A vibrating orifice plate 5 can be employed. For example, as shown in FIG. 1D, the length of the slit 52 can be formed long, thereby reducing the natural frequency of the vibrating body formed between the slits 52 of the vibrating orifice plate 5 and reducing the length. A vibrating orifice member 3 suitable for miniaturization of a mixed fluid having a flow velocity is obtained.

  Moreover, it is preferable to form the through-hole 51 of the vibration orifice plate 5 in a tapered shape whose diameter increases in the flow direction of the mixed fluid, and thereby, a rapid contraction action can be stably achieved.

(Second Embodiment)
FIG. 2A is a longitudinal sectional view showing a miniaturization mixing apparatus according to a second embodiment of the present invention. This refined mixing device 11 is a refined mixing device that refines oil as a first liquid phase fluid and disperses it in water as a second liquid phase fluid to produce a water oil emulsion as a refined mixed fluid. is there.

  This refinement mixing device 11 is configured using the same components as those of the refinement mixing device 1 of the first embodiment, and is used as a reduced vibration member in the flow channel tube 2 that forms the flow channel 20 therein. Two vibrating orifice members 3 are provided. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the flow channel pipe 2, a relay pipe 23 is arranged between an inlet pipe 21 and an outlet pipe 22 similar to those of the miniaturization mixing apparatus of the first embodiment. At both ends of the relay pipe 23, a spiral groove and an annular step are provided. A spiral groove is screwed between the annular step at one end of the relay pipe 23 and the annular step at the other end of the inlet pipe 21 with the vibrating orifice member 3 interposed therebetween. The spiral groove is screwed together with the vibrating orifice member 3 sandwiched between the portion and the annular step at the other end of the outlet pipe 22. Thus, the vibrating orifice member 3 is fixed between the inlet pipe 21, the relay pipe 23, and the outlet pipe 22, respectively.

  As shown in FIG. 2B, the vibrating orifice plate 5 of the second embodiment has a regular hexagonal through hole 151 in the center, and is parallel to each other from both ends of each side of the regular hexagonal through hole 151. There are provided two slits 152, 152 that are perpendicular to each side. As a result, the two slits 152, 152 extend from the apex of the regular hexagonal through-hole 151 in a direction perpendicular to the adjacent sides. Between the slits 152, 152,..., A lead-like vibrating body extending to the outer diameter side of each side of the through-hole 151 and an acute-angle vibrating body extending to the outer diameter side of the apex of the through-hole 151 are formed. is doing. The length of the slit 152 is set to about 1.5 times the distance between the opposing sides of the through hole 151.

  In the miniaturization mixing apparatus 11 of the second embodiment, a mixing pump that premixes oil and water is connected to an upstream side of a supply pipe connected to an inlet pipe 21. A known mixing pump can be used as the mixing pump.

  In the miniaturization mixing device 11 of the second embodiment, the mixed fluid of water and oil supplied from the mixing pump is supplied to the inlet pipe 21 via the supply pipe. The mixed fluid supplied from the mixing pump preferably has an oil having a diameter of about several hundred μm to several millimeters dispersed in water. The mixed fluid of water and oil preferably has a flow rate of about 10 to 50 m / s and a pressure of about 0.3 to 1 MPa at the inlet opening 21 a of the inlet pipe 21.

  The mixed fluid that has flowed into the flow path 20 of the flow path pipe 2 from the inlet opening 21 a passes through the two vibrating orifice members 3, thereby causing a rapid contraction action when passing through the through-hole 151 of each vibrating orifice member 3. The vibration action of the vibration orifice plate 5 is repeated. Thereby, the oil particles are refined, oil fine particles having a diameter of 10 nm to several tens of μm are generated, and a water oil emulsion in which the oil fine particles are dispersed in water is obtained. The water-oil emulsion thus generated is discharged from the outlet opening 22a of the outlet pipe 22 to the discharge pipe, and is supplied to the burner, the engine and the like through a fuel injection device such as a plunger pump connected to the downstream side of the discharge pipe.

  According to the refined mixing apparatus 11 of the present embodiment, a water-oil emulsion can be generated with a relatively simple configuration including a plurality of vibrating orifice members 3 in the flow channel pipe 2. Therefore, this miniaturization mixing apparatus 11 can be reduced in size compared with the conventional water-oil emulsion production | generation apparatus which refines | miniaturizes oil with a porous glass membrane. Further, since the oil is refined by the rapid contraction action and the vibration action of the vibration orifice member 3, the oil particle production time can be significantly shortened compared with the conventional water-oil emulsion production apparatus, and therefore the production efficiency of the water-oil emulsion is improved. Can be improved effectively. Furthermore, since the miniaturization mixing apparatus 11 of the present embodiment can be made of a general resin material or metal material, better durability than a conventional water-oil emulsion generation apparatus using a glass material can be obtained. Therefore, a water-oil emulsion can be stably produced even in an environment that receives vibrations and impacts from a vehicle engine or the like.

  In this embodiment, as oil, various oils, such as light oil, kerosene, heavy oil or vegetable oil, or waste oil, are employable. In particular, the refined mixing device 11 of the present embodiment can effectively atomize highly viscous oil such as C heavy oil and waste animal and vegetable oil. In the case where the highly viscous oil is made into fine particles, the number of vibrating orifice members 3 is preferably 2 or more. Further, the through hole 151 of the upstream vibration orifice member 3 is formed to be smaller than the through hole 151 of the upstream vibration orifice member 3, and the thickness of the vibration orifice plate 5 of the upstream vibration orifice member 3 is It is preferable to reduce the thickness of the vibrating orifice plate 5 of the upstream vibrating orifice member 3. With these configurations, the rapid contraction action and the vibration action applied to the mixed fluid increase toward the vibrating orifice member 3 on the downstream side, and the particle diameter can be reduced in order to effectively make fine particles. Note that the vibration action of the vibration orifice member 3 may be adjusted by changing the length and arrangement position of the slit 152.

  Thus, various oils can be made into fine particles by appropriately changing the number and setting of the vibrating orifice members 3 according to the viscosity.

  In addition to the oil fine particles dispersed in water, the micronizing and mixing device 11 of the present embodiment can also make water fine particles dispersed in the oil.

  In the above embodiment, a vibrating orifice plate 5 as shown in FIG. 2C may be used as the vibrating orifice member 3. This vibrating orifice plate 5 is formed by shortening slits 152, 152 extending from both ends of each side of the regular hexagonal through-hole 151 in a direction perpendicular to each side. The vibrating orifice plate 5 in FIG. The natural frequency of the vibrating body formed between the slits 152, 152,... Can be set low. Thereby, the vibrating orifice member 3 suitable for miniaturization of the mixed fluid having a high flow rate is obtained. Moreover, the effect of refinement | miniaturization can be heightened with respect to a low-viscosity fluid.

  Moreover, it is preferable to form the through-hole 151 of the vibration orifice plate 5 in a taper shape whose diameter increases in the flow direction of the mixed fluid, whereby the rapid contraction action can be stably achieved.

(Third embodiment)
FIG. 3A is a longitudinal sectional view showing a miniaturization mixing apparatus 101 according to a third embodiment of the present invention. The fine mixing device 1 is a fine mixing device that generates micro / nano bubbles by making air as a gas fine and dispersing it in water as a liquid.

  This miniaturization mixing apparatus 101 includes the buffer container 6 in the miniaturization mixing apparatus 1 of the first embodiment. In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the miniaturization mixing apparatus 101 of this embodiment, a buffer container 6 that extends substantially at right angles to the axis of the flow channel tube 2 is provided on the side surface of the flow channel tube 2. The buffer container 6 includes a cylindrical pipe 61 that is fixed to the side surface of the relay pipe 23 of the flow path pipe 2 and communicates with the flow pipe 2, and a cap 62 that is fixed to the upper end of the cylindrical pipe 61. In the miniaturized mixing apparatus 101, the mixed fluid is supplied into the flow path pipe 2 with air remaining in the buffer container 6. Since the air in the buffer container 6 provides a buffering action against the mixed fluid, the vibrating orifice member 3 can promote the refinement of bubbles of the mixed fluid.

  FIG. 3B is a longitudinal sectional view showing a miniaturization mixing apparatus 111 according to a modification of the present embodiment. The fine mixing device 111 is formed by sequentially connecting the fine mixing device 101 of FIG. 3A in the axial direction of the flow channel tube 2. That is, in the refinement mixing apparatus 111 of the modified example, a plurality of relay pipes 23 are arranged between the inlet pipe 21 and the outlet pipe 22, and the vibrating orifice member 3 is arranged between the relay pipes 23. Every other buffer container 6 is arranged in 23. According to the refinement mixing apparatus 111 of the modification, the refinement effect can be further enhanced by the rapid contraction action and the vibration action by the plurality of vibrating orifice members 3 and the buffer action by the buffer container 6. Therefore, in addition to the mixed fluid of gas and liquid, miniaturization can be performed on the mixed fluid of liquid and liquid with high viscosity.

  FIG. 3C is a longitudinal sectional view showing a miniaturization mixing apparatus 102 according to a modification of the present embodiment. The fine mixing device 102 includes a tank-type buffer container 6. The buffer container 6 includes a connection pipe 65 that is fixed to the side surface of the relay pipe 23 and communicates with the relay pipe 23, and a tank 66 that is connected to the connection pipe 65. The tank-type buffer container 6 can increase the buffering effect on the mixed fluid.

(Fourth embodiment)
FIG. 4A is a plan view showing a vibrating orifice plate 5 of the vibrating orifice member 3 of the fourth embodiment. The vibrating orifice plate 5 of this embodiment is provided with a large through hole 55 having a large diameter and a small through hole 56 having a small diameter. The large through hole 55 and the small through hole 56 are set to have a diameter ratio of 2.5: 1 and are arranged eccentrically on the same diameter. As shown in the cross-sectional view of FIG. 4B, the large through-hole 55 and the small through-hole 56 are formed in a tapered shape whose diameter increases from one surface to the other surface. As shown by an arrow A in FIG. 4C, the mixed fluid flows through the large through hole 55 and the small through hole 56 from the small diameter side toward the large diameter side. As a result, a rapid contracting action is obtained in both the large through hole 55 and the small through hole 56, and a vibrating action is obtained in a portion adjacent to the large through hole 55 and the small through hole 56 of the vibrating orifice plate 5. As a result, for example, the air in the mixed fluid of air and water is refined, and micro-nano bubbles are generated. In addition, for example, the oil in the mixed fluid of oil and water is refined to produce a water oil emulsion.

  In the present embodiment, the large through-hole 55 and the small through-hole 56 do not have to be arranged on the same diameter, and need only be arranged eccentrically with the circular vibrating orifice plate 5. Further, the ratio of the diameters of the large through hole 55 and the small through hole 56 can be set to other ratios according to the type and flow rate of the mixed fluid.

(Fifth embodiment)
FIG. 5 is a view showing a fuel supply apparatus configured using the miniaturization mixing apparatus of the present invention. The fuel supply device 8 is a device that generates a water-oil emulsion formed by mixing water and oil and supplies the water-oil emulsion to the burner. The fuel supply device 8 includes a water tank 81 that stores water, an oil tank 82 that stores oil, a pump 83 that pumps water from the water tank 81 and oil from the oil tank 82 in a premixed state, A refined mixing device 84 that refines the mixed fluid of water and oil pumped from the pump 83 to generate a water-oil emulsion, and a reservoir that stores the water-oil emulsion from the refined mixing device 84 in an airtight state with respect to the outside air. The apparatus 85 is comprised.

  The water tank 81 and the oil tank 82 are connected to a return pipe 87 that returns the overflow from the storage device 85. A flow control valve 101 and a flow meter 102 are interposed between the water tank 81 and the return pipe 87. A flow control valve 201 and a flow meter 202 are interposed between the oil tank 82 and the return pipe 87. Based on the measurement values of the flow meters 102 and 202, the opening degree of the flow control valves 101 and 201 is adjusted, and appropriate amounts of water and oil are supplied to the return pipe 87. The flow control valves 101 and 201 may be controlled based on the supply amount of the water-oil emulsion from the storage device 85 to the burner, in addition to the measurement values of the flow meters 102 and 202.

  To the water in the water tank 81, sodium chloride as an electrolyte and ozone as an oxidant are added. The salt can promote stabilization when water or oil is atomized, and can effectively prevent oil-water separation over a long period of time. In addition, when the fine particle mixed fluid of water and oil is burned as fuel by ozone, it is possible to promote the oxidation of the product from the water and oil to promote complete combustion of the fuel.

  The pump 83 only needs to be able to appropriately pressurize the mixed fluid of water and oil, and does not need a function of stirring water and oil. The mixed fluid having a predetermined pressure and flow rate sent from the pump 83 is supplied to the fine mixing device 84 having the same configuration as the fine mixing device 11 of the second embodiment. The discharge amount of the pump 83 is controlled based on the measurement value of the flow meter 102 of the water tank 81 and the measurement value of the flow meter 202 of the oil tank 82 and based on the supply amount to the burner through the supply pipe 89. To do.

  Water or oil is refined from the mixed fluid sent from the pump 83 by the refinement mixing device 84 to produce a water-oil emulsion. The water-oil emulsion generated by the fine mixing device 84 is supplied to the storage device 85.

  The storage device 85 includes a water tank 501, a dome container 502 disposed in the water tank 501 and having an open lower end, and a receiver 503 disposed in the dome container 502 and receiving the water oil emulsion from the micronization mixing device 84. And a recovery container 504 for recovering excess water-oil emulsion overflowing from the receiver 503. Each container accommodated in the water tank 501 is cut off from the atmosphere by the water in the water tank 501. The water-oil emulsion that has flowed into the receiver 503 is sent to the burner main body (not shown) via the supply pipe 89 and burned. On the other hand, surplus water-oil emulsion is sucked into the pump 83 from the recovery container 504 through the return pipe 87.

  According to the fuel supply device of the present embodiment, water or oil fine particles having a diameter of 10 nm to several tens of μm can be generated by the fine mixing device 84, so that the fine particles are retained for a long time without adding an emulsifier. Is done. Therefore, even if a water oil emulsion is used as a fuel, it is possible to prevent the generation of harmful substances due to the combustion of the emulsifier. In addition, since the fine particles of the water-oil emulsion can be maintained, even if they are stored in the storage device 85 after the emulsion is formed, they can be sent to the burner via a pressurizing device such as a plunger without re-stirring. Therefore, the number of components of the fuel supply device can be reduced, and the amount of fuel supplied to the burner can be controlled easily and with a good response.

  In the fuel supply device of the present embodiment, light oil, kerosene, heavy oil, vegetable oil, waste oil, or the like can be used as oil mixed with water.

  Moreover, the fuel supply apparatus of this embodiment can be used for an engine, a turbine, etc. other than a burner.

  In each of the above embodiments, the vibration orifice plate 5 of the vibration orifice member 3 employs various materials depending on the mixed fluid, such as resin such as engineer plastic and fiber reinforced plastic, and metal such as stainless steel and titanium. be able to.

DESCRIPTION OF SYMBOLS 1 Fine mixing apparatus 2 Channel pipe 3 Vibrating orifice member 4 Seal ring 5 Vibrating orifice plate 21 Inlet pipe 22 Outlet pipe 51 Through-hole 52 Slit

Claims (7)

A refined mixing apparatus for producing a refined mixed fluid by refining at least one kind of fluids of a mixed fluid in which a plurality of types of fluids are mixed in advance,
A channel through which the mixed fluid is guided;
A reduced vibration member that is disposed in the middle of the flow path and has a reduced passage having a cross section smaller than the cross section of the flow path, and a vibrating body surrounding the reduced passage;
A miniaturized mixing apparatus comprising a buffer container connected to the flow path in the vicinity of the reduced vibration member and formed so that the mixed fluid flows between the flow path and the flow path. In the fine mixing apparatus according to claim 1,
The reduced vibration member includes a plate-like body, a through-hole formed in the plate-like body, and a notch formed in the plate-like body connected to the through-hole,
The miniaturization mixing apparatus, wherein the through hole is a reduction passage, and an adjacent portion of the cut of the plate-like body is a vibrating body. In the fine mixing apparatus according to claim 1,
A plurality of reduced vibration members are provided in the axial direction of the flow path,
A miniaturizing and mixing apparatus, wherein the buffer container is provided in at least one place between a plurality of reduced vibration members. In the refinement | mixing mixing apparatus of Claim 2,
The through hole of the reduced vibration member is formed in a polygon,
2. The miniaturization characterized in that the cuts of the reduced vibration member are formed so as to extend in parallel with each other from each end of one side of the polygonal through-hole, corresponding to each side. Mixing equipment. In the fine mixing apparatus according to claim 1,
The miniaturization mixing apparatus, wherein the reduction passage of the reduction vibration member is formed in a tapered shape whose diameter is increased on the downstream side. In the fine mixing apparatus according to claim 1,
The miniaturized mixing apparatus, wherein the mixed fluid is a fluid in which a first fluid in a gas phase and a second fluid in a liquid phase are mixed. In the fine mixing apparatus according to claim 1,
The miniaturized mixing apparatus, wherein the mixed fluid is a fluid in which a liquid first fluid and a liquid second fluid are mixed.

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