JP2009279502A - Particulate atomizer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain a particulate atomizer which can pulverize sufficiently a fluid circulating the inside and can atomize particulates in the fluid without depending on the specific gravity. <P>SOLUTION: The particulate atomizer comprises a column-shaped tubular body provided with a part generating a rotational flow, a pulverizing part, and a column, and an air supply part, and is characterized in that the part generating a rotational flow and the pulverizing part are positioned respectively in a fluid introducing port of the body and between the part generating a rotational flow and a fluid discharge spout of the body, and the column is positioned from the fluid introducing port of the body to the fluid discharge spout inside the body and a flow path is formed between the inner surface of the body and the column surface. The air supplier introduces a fluid in the vicinity of the air supplier from the fluid introducing port of the body to the inside of the body by the circulation of a gas supplied from a gas feeding system, and also generates a rotational flow to the fluid by the part generating a rotational flow, and allows the fluid introduced into the body to circulate the flow path between the inner surface of the body and the column surface to pulverize it in the pulverizing part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a granular material refining apparatus for refining a granular material contained in a fluid such as waste water.

For example, raw garbage pulverized in a granular form by a disposer is discharged into a public sewer or the like together with kitchen wastewater and processed in a public sewage treatment facility. In such sewage treatment, water quality standards for wastewater discharged to public sewers and the like tend to be raised from the viewpoint of environmental problems and the like (standard values such as BOD values tend to be set more strictly).
In order to cope with such an increase in water quality standards, it is conceivable that granular materials such as garbage that have been pulverized by a disposer are decomposed by bacteria (aerobic bacteria) in the treatment tank. In the treatment tank, air is fed into the wastewater in the treatment tank by an air diffuser, so that the bacteria propagate and the propagated bacteria decomposes the crushed garbage. Since it is low, pulverized granular garbage settles and the solubilization rate is slow. If not solubilized, decomposition by bacteria does not proceed, so it is necessary to stay in the treatment tank for a long time in order to improve water quality. Since the pulverized granular garbage flows into the processing tank almost regularly, an increase in the size of the processing tank is required in order to stay in the processing tank for a long time. On the other hand, there is a demand to reduce the size of the treatment tank from the viewpoint of space restrictions and cost. Therefore, it is conceivable to reduce the size of the processing tank by promoting solubilization of the granular material by refining the granular material contained in a fluid such as waste water.

As a technique adjacent to such a technique, an air supply pipe is provided in the vicinity of the fluid inlet of the cylindrical pipe having the fluid inlet and outlet, a swirl flow generating means is provided inside the fluid inlet of the cylindrical pipe, and the cylindrical pipe There is a gas-liquid mixing device provided with gas-liquid mixing means on the fluid discharge port side (Patent Document 1). In such a gas-liquid mixing device 1 (FIG. 6), the fluid (drainage) introduced into the cylindrical tube 3 together with the air discharged from the air feeding tube 2 is turned into a swirling flow by the swirling flow generating means 4. Flows inside. The swirled wastewater flows spirally around the inner surface of the cylindrical tube 3 toward the fluid discharge port 5, while air from the air supply tube 2 flows near the central axis of the cylindrical tube 3 to the fluid discharge port. Circulate towards Thus, the waste water is stirred by the gas-liquid mixing means 6 (stirring protrusion) on the inner surface of the cylindrical tube 3 to mix the gas and liquid. In the present specification, the fluid means a liquid.
Japanese Patent Laid-Open No. 2001-62269

  In the gas-liquid mixing device 1, a swirling flow is generated in the fluid (drainage), and only the fluid is passed near the gas-liquid mixing means 6 on the inner surface of the cylindrical tube 3, and the vicinity of the central axis inside the cylindrical tube 3. It can be said that only air is allowed to flow through. In the gas-liquid mixing device 1, there is a possibility that fluid (drainage) flows to a certain extent through the region near the central axis of the cylindrical tube 3, but the center of the cylindrical tube 3 is caused by the action of microbubbles generated in the gas-liquid mixing means 6. Gas-liquid can be mixed even in the fluid flowing through the region near the axis.

  However, if the granular material in the waste water is made finer instead of the gas-liquid mixing, the problem does not occur in the gas-liquid mixing apparatus 1, that is, the granular material in the fluid flowing through the region near the central axis of the cylindrical tube 3. This causes a problem that it is difficult to crush (a problem that crushing of the granular material depends on a flow region in the cylindrical tube 3). Further, in the fluid flowing while swirling inside the cylindrical tube 3, the granular material having a specific gravity larger than that of the fluid flows near the inner surface of the cylindrical tube 3, but the granular material having a specific gravity smaller than that of the fluid is a cylinder. There arises a problem that it is difficult to be crushed by flowing through a region close to the central axis of the tube 3.

  In addition, the cylindrical body 7 provided with the swirling flow generating means 4 is positioned inside the fluid inlet port side. On the other hand, the cylindrical body 7 is not positioned in the portion where the gas-liquid mixing means 6 is provided. The area is wider than the cross-sectional area of the flow path in the portion where the cylindrical body 7 on the fluid inlet side is disposed. Therefore, in the portion where the gas-liquid mixing means 6 is provided, the flow velocity of the fluid is slower in the central axis direction and the swirling direction than in the portion where the cylindrical body 7 is arranged, and the waste water is discharged by the gas-liquid mixing means 6. A larger amount of air flows in the vicinity of the central axis inside the cylindrical tube 3 that is not crushed. That is, it does not become a problem in gas-liquid mixing by microbubbles, but it becomes a problem in the refinement of granular materials.

  Therefore, the present invention can sufficiently pulverize the particulate matter in the wastewater by the swirling flow generated by discharging the gas into the fluid (drainage) (the refinement of the particulate matter in the wastewater is distributed in the flow path). It is possible to improve the dependence on the area), and also to improve the refining of the granular material depending on the specific gravity of the granular material. Further, by reducing the change in the cross-sectional area of the flow path of the device, It aimed at realization of the granular material refinement | miniaturization apparatus which can accelerate | stimulate refinement | miniaturization and solubilization more. It is also desirable to realize a granule refinement apparatus suitable for bacterial inhabitants that promotes the degradation of particulate matter.

  In order to achieve the above object, a granular material refinement apparatus according to the present invention includes a swirl flow generating unit, a crushing unit, a columnar tube-shaped main body unit including a columnar body, and a granular material fine unit having an air supply unit. The swirling flow generating portion is positioned on the fluid inlet side of the main body portion, and the crushing portion is positioned between the swirling flow generating portion and the fluid discharge port of the main body portion. The column body is positioned from the fluid introduction port side to the fluid discharge port side, and a flow path is formed between the inner surface of the main body and the column surface. Then, the air supply unit discharges the gas supplied from the air supply device, thereby introducing the fluid in the vicinity of the air supply unit from the fluid introduction port of the main unit into the main unit, and the swirl flow generating unit By causing a swirl flow to occur, the fluid introduced into the main body portion flows through the flow path between the inner surface of the main body portion and the surface of the column body. Thus, the granule refiner can improve the dependence of the refinement of the granulate on the flow area and the specific gravity of the granule. Of course, the change in the cross-sectional area of the flow path can also be reduced (claim 1).

The crushing part is formed of crushing wing parts connected in multiple stages, and the crushing wing part has crushing means protruding to the flow path side, so that the particulate matter in the waste water flowing through the flow path can be sufficiently crushed. And solubilization of the particulate matter can be promoted (claim 2).
The crushing means has a crush plate and a plurality of notches formed in the crush plate, and has a plurality of crush projections, so that the waste water flowing through the flow path can be sufficiently crushed. Refinement of the particulate matter contained in the waste water can be promoted (Claim 3).

If the central axis of the column is positioned on the central axis of the main body, the cross-sectional shape of the flow path in the central axis direction is uniform in any region in the radial direction of the main body, and the swirl flow The granular material contained in the drained wastewater can be uniformly crushed (claim 4).
In addition, if both or any one of the main body and the column have a circular or regular polygonal cross-sectional shape, it is possible to smoothly flow the drainage that has turned into a swirling flow. ).

  Further, if either one or both of the crushing means and the column body are formed of porous ceramic, the particulate matter collides with fine irregularities on the ceramic surface and the miniaturization is promoted. These micropores can help the bacteria to promote water quality improvement and increase the wastewater treatment capacity (Claim 6).

  As described above, according to the granular material refining device of the present invention, it is possible to improve that the refining of the granular material in the wastewater depends on the distribution region, and the above-mentioned refining is added to the specific gravity of the granular material. Dependence can be improved and further refinement and solubilization of the granular material can be promoted. Moreover, the change of the cross-sectional area of a flow path can be decreased, and the crushing of waste water and the refinement | miniaturization and solubilization of a granular material can be promoted more. Furthermore, it is possible to realize a particulate refining device that is suitable for the inhabiting of bacteria that promote water quality improvement, that is, can maintain the treatment capacity well over a long period of time.

  Hereinafter, with reference to drawings, one embodiment of the granular material refinement device concerning the present invention is described.

  The granular material refinement | miniaturization apparatus 10 is demonstrated based on FIGS. FIG. 1 is a diagram illustrating a schematic configuration of a granular material refinement apparatus 10, and the granular material refinement apparatus 10 includes a main body 11 and an air supply unit 20. The main body 11 is formed, for example, by connecting the crushing part 40 to the swirling flow generating part 30, and has a cylindrical tube having an outer diameter of 40 mm and an inner diameter of 30 mm, for example. Here, the swirl flow generating unit 30 is disposed on the fluid introduction port 12 side of the main body 11, and the crushing unit 40 is disposed between the swirl flow generating unit 30 and the fluid discharge port 13. Further, the main body 11 includes a columnar column 50 having an outer diameter of 12 mm, for example, disposed from the fluid inlet 12 to the fluid outlet 13, and the central axis of the column 50 is the center of the main body 11. Positioned on the shaft 11x, a flow path 14 is formed between the inner surface 11a of the main body 11 and the surface of the column 50 (the peripheral surface of the column) 50a. The air supply unit 20 is connected to the fluid introduction port 12 side of the main body unit 11. In the main body 11, for example, in the waste water of the processing tank, the air supply unit 20 is positioned below and the fluid discharge port 13 is positioned above.

Next, the air supply unit 20 will be described.
As shown in FIG. 1, the air supply unit 20 includes an air supply unit tube body 21 that forms a cylindrical tube body having an outer diameter larger than that of the main body unit 11. One end 21 a side of the air supply tube 21 is reduced in diameter, and is connected to the vicinity of the fluid inlet 12 of the main body 11. A cutout portion is provided in a part on the side of the other end 21b of the air supply unit tube body 21, and the swirl flow generating unit 30 converts gas (air) supplied from an air supply device (for example, an air pump) (not shown). An air supply tube 22 (elbow) for supplying to the inside of the air supply unit tube 21 is introduced. The air supply pipe 22 supplies the gas supplied from the air supply device to the swirl flow generating unit 30. The air supply tube 21 is formed of porous ceramic, and the air supply tube 22 is formed of resin or the like.

Next, the swirl flow generator 30 will be described.
As shown in FIG. 1, the swirling flow generating unit 30 has a swirling flow generating unit main body 31 that forms a cylindrical tubular body, and two swirling flow generating blades 32 a and 32 b that are substantially semicircular. The inner surface of the swirl flow generator 30 forms part of the inner surface 11 a of the main body 11 in the swirl flow generator 30. The swirl flow generating blades 32a and 32b are positioned so as to face each other across the central axis 11x, and are positioned so as to intersect in FIG.

  The swirl flow generating blades 32a and 32b have their outer peripheries 32c and 32d arced as an ellipse (FIG. 2), are positioned in the direction of the central axis 11x, are attached to the inner surface of the swirl flow generating unit 30, and The body 50 is supported (the outer peripheries 32c and 32d are swirled about 180 degrees on the inner surface of the swirling flow generating unit 30). FIG. 2 is an exploded perspective view showing the swirl flow generating blades 32a and 32b and the column bodies 50 supported by them, taken out from the swirl flow generating unit 30 in the direction of the central axis 11x. The swirling flow generating section main body 31 and swirling flow generating blades 32a and 32b are formed of porous ceramic.

Next, connection between the air supply unit 20 and the swirl flow generation unit 30 will be described.
As shown in FIG. 1, the swirl flow generating unit 30 is positioned with an air supply pipe connecting part 23 in which an air supply pipe 22 is connected to the fluid inlet 12 side of the main body 11. The air supply pipe connection portion 23 is a cylindrical tube body, the central axis thereof is positioned on the central axis 11x of the main body portion 11, and one end side thereof slightly enters the fluid inlet 12 of the main body portion 11. In addition, a plurality of (for example, 3 to 4) support plates 24 each having a substantially trapezoidal shape are connected to the fluid inlet 12 side. These support plates 24 are positioned radially with respect to the central axis 11x of the main body 11, and the surface of the support plate 24 is parallel to the central axis 11x (the passage of fluid introduced into the fluid inlet 12). Not to obstruct the flow). The air pipe connecting portion 23 and the support plate 24 are formed of porous ceramic.

Next, the crushing part 40 will be described.
As shown in FIG. 3, the crushing part 40 is formed of crushing blade parts 40A to 40F connected in six stages (the crushing blade part 40A is positioned in the immediate vicinity of the swirl flow generating part 30 and the crushing blade part 40B to 40F). 40F is sequentially positioned toward the fluid discharge port 13 side). As shown in FIG. 4, the crushing blade portions 40 </ b> A to 40 </ b> F made of porous ceramic include a ring-shaped torus 41, and a crushing plate 42 (crushing means) that protrudes when formed inside the torus 41. have. The crushing plate 42 is formed with six substantially circular flow path holes 43 at equal intervals in plan view, and these flow path hole 43 is a central hole 44 formed at the center of the torus 41. Communicating with Thus, the crushing plate 42 is formed with the crushing protrusions 45 between the respective flow path hole 43 so that a gap P (FIG. 3) between the protrusion tip 45a of the crushing protrusions 45 and the column body 50 is formed. It has become.

  As shown in FIG. 3, the crushing plate 42 has a thickness of about one half of the thickness of the torus 41 at the boundary with the torus 41, but the crushing plate 42 is directed toward the center hole 44. The thickness is decreasing. Therefore, between the crushing plates 42 of the crushing blade portions 40A to 40F, substantially disc ring-shaped gaps 40Ag to 40Eg having an inner diameter of the inner surface 41a of the annular body 41 as an outer diameter are formed. Note that the inner surface 41 a of the torus 41 forms the inner surface 11 a of the main body 11 in the crushing portion 40.

  Further, the projection tips 45a of the first, third, and fifth stage crushing blade portions 40A, 40C, and 40E are positioned so that the straight line connecting them is parallel to the central axis 11x, and the second stage The projections 45a of the fourth and sixth stage crushing wings 40B, 40D, and 40F are similarly positioned. As shown in FIG. 5, the protrusion tips 45 a of the crushing blade portions 40 </ b> B, 40 </ b> D, and 40 </ b> F are positioned just in the middle of the protrusion tips 45 a of the crushing blade portions 40 </ b> A, 40 </ b> C, and 40 </ b> E when viewed from the central axis 11x direction. (FIG. 5 is a plan view of the granular material refinement apparatus 10). The protrusion tips 45a of the crushing blade portions 40A to 40F arranged in this way can be connected by a spiral curve, and connect the center portions of the flow path portion holes 43 of the crushing blade portions 40A to 40F. Since the curve can also be connected by a spiral curve, a spiral channel is formed in the crushing part 40 around each column 50 by the channel holes 43. Of course, this flow path is formed so as to penetrate the disc ring-shaped gaps 40Ag to 40Eg.

Even such a relatively complicated flow path can be easily formed by connecting the crushing blade portions 40A to 40F formed of the same shape or the like. The cost of the crushing part 40) can be reduced. Of course, the crushing wings 40 </ b> A to 40 </ b> F may be integrally formed as the crushing unit 40.
If the swirl flow (curve F) of the drainage generated by the swirl flow generating blades 32a and 32 illustrated in FIG. 2 can flow through the crushing portion 40 while swirling, the crushing blade portions 40A to 40F. The arrangement of the protrusion tips 45a is not limited to the example of FIG.

Next, the refinement | miniaturization of the granular material in the waste_water | drain by the granular material refinement | purification apparatus 10 is demonstrated.
The granular material refinement | miniaturization apparatus 10 is installed in a processing tank (in waste water). Of course, it is desirable that the granular material refinement device 10 is installed so as to be submerged in the waste water, and the central axis 11x of the main body 11 is positioned at the center of the treatment tank.
Thus, when gas (air) is supplied to the air supply unit 20 of the granular material refinement apparatus 10 installed in the processing tank by an air pump (not shown), the fluid introduction port of the main body unit 11 is supplied from the air supply pipe connection unit 23. As a result, gas is discharged to 12 and a negative pressure is generated from the air supply pipe connection portion 23 toward the swirl flow generation portion 30. Then, the waste water in the air supply unit 20 and in the vicinity of the fluid introduction port 12 of the main body unit 11 flows from the fluid introduction port 12 of the main body unit 11 to the fluid discharge port 13 together with the gas by the negative pressure (of course, the air supply unit). Drainage flows into the partial tube 21. Drainage also flows from the other end 21b).

  In the vicinity of the air supply pipe connection portion 23, the waste water flows into the swirl flow generation portion 30 with almost only the velocity component in the direction of the central axis 11 x together with the discharged gas. For example, a swirl flow in the right-hand screw direction is generated by the swirl flow generating blades 32a and 32b in the waste water flowing into the swirl flow generating unit 30 (a part of the speed component in the direction of the central axis 11x is converted into a speed component in the swirl direction). ) Of course, the swirl flow generator 30 swirls the drainage in a spiral shape formed by the outer peripheries 32c and 32d of the swirl flow generating blades 32a and 32b. A curve F in FIG. 2 illustrates the swirl flow generated by the swirl flow generating blades 32a and 32.

  The drainage that has turned into a swirling flow flows into the crushing section 40. In the crushing part 40, the drainage is made into disc ring-shaped gaps 40Ag to 40Eg, the flow passage part holes 43 of the crushing blade parts 40A to 40F communicating so as to penetrate these, the column body 50, and the crushing protrusions. The gap P with the protrusion tip 45a of the 45 flows through. At this time, the wastewater collides with the crushing plates 42 of the crushing blade portions 40A to 40F and is crushed by the crushing projections 45 and the projection tips 45a, so that the particulate matter contained in the wastewater is refined. That is, the waste water is sufficiently crushed by passing through the crushing section 40, and the particulate matter in the waste water is refined.

  In this way, in the granular material refinement device 10, the problem that the waste water flowing through the vicinity of the central axis 11x of the main body 11 is difficult to be crushed (difficult to be miniaturized) is improved, and a granular material having a specific gravity smaller than that of the fluid. The problem that it is difficult to be crushed by flowing through a region close to the central axis of the cylindrical tube is also improved. Of course, also in the crushing part 40, the cross-sectional area of the flow path 14 formed between the inner surface 11a of the main body part 11 (in the crushing part 40, the inner surface 41a of each torus 41) and the column body 50 does not change. Further, it is possible to prevent a decrease in the flow velocity in the central axis direction and the swirling direction of the drainage flowing through the crushing portion 40.

  Further, each crushing plate 42 of the crushing blade portions 40A to F with which the swirling flow drainage collides exerts an effect of further shortening the pitch of the swirling flow generated in the swirling flow generating unit 30. As a result, each crushing plate 42 exhibits an effect of increasing the kinetic energy of the swirl flow by converting the kinetic energy of the fluid in the direction of the central axis 11x into the kinetic energy of the swirl flow. Thus, the crushing unit 40 can realize sufficient crushing. Moreover, in the crushing part 40, the granular material contained in the waste water collides with the torus 41 and the crushing plate 42 which are formed of porous ceramics and have fine irregularities on the surface, and the surface is similarly fine. Colliding with the surface of the columnar body 50 having irregularities, the refinement of the granular material is promoted and the solubilization speed is increased. Therefore, if the granular material refinement apparatus 10 is used, the refinement and solubilization of the granular material is promoted, the decomposition by bacteria becomes faster, and the wastewater flowing into the treatment tank can be treated to a high water quality standard in a short time and discharged. Therefore, the processing tank can be downsized.

Furthermore, in the granular material refinement apparatus 10, the crushing plate 42 and the column 50 formed of porous ceramic can inhabit bacteria that decompose the granular material inside the fine holes. , The wastewater treatment capacity is improved.
In addition, the granular material refinement | miniaturization apparatus which concerns on this invention can be implemented suitably after changing suitably in the range which does not deviate from the technical idea, and is not limited to the Example mentioned above. For example, the number of stages of the crushing blade portion is not limited to the above-described embodiment, and the method of forming a spiral shape formed by a curve connecting the protrusion tips 45a is not limited to the above-described embodiment. Further, both or any one of the main body portion and the column body may have a circular or regular polygonal cross-sectional shape (for example, a regular hexagon or a regular octagon).

It is a cross-sectional schematic block diagram in one Example of the granular material refinement | miniaturization apparatus which concerns on this invention. FIG. 2 is an exploded perspective view of the swirl flow generating unit in the granular material refinement apparatus of FIG. 1 when swirl flow generating blades and column bodies supported by them are taken out in the central axis direction. It is a figure which shows the cross-sectional schematic structure of the crushing part of the granular material refinement | miniaturization apparatus of FIG. It is a figure which shows schematic structure of the plane and side surface of the crushing wing | blade part which comprises the crushing part of FIG. It is a figure which shows the example of an arrangement | sequence of each crushing protrusion part in a crushing part while showing the plane schematic structure of the granular material refinement | miniaturization apparatus shown in FIG. It is a figure which shows the cross-sectional schematic structure example of the conventional granular material refinement | miniaturization apparatus (gas-liquid mixing apparatus).

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Granular material refiner 11 Main body part 11a Main body inner surface 12 Fluid introduction port 13 Fluid discharge port 14 Flow path 20 Air supply part 30 Swirling flow generation part 40 Crushing part 40A-40F Crushing blade part 42 Crushing plate 43 Channel part hole (Notch)
45 Crushing protrusion (crushing means)
50 Column 50a Column surface

Claims (6)

In a granular material refinement apparatus having a swirl flow generating section, a crushing section, and a main body section having a columnar tube shape including a column body, and an air supply section,
The swirl flow generating portion is positioned on the fluid introduction port side of the main body, and the crushing portion is positioned between the swirl flow generating portion and the fluid discharge port of the main body,
Furthermore, in the inside of the main body portion, the column body is positioned from the fluid introduction port side to the fluid discharge port side, and a flow path is formed between the main body portion inner surface and the column body surface,
The air supply unit introduces the fluid in the vicinity of the air supply unit into the flow path from the fluid introduction port of the main body unit by the flow of the gas supplied from the air supply device, and the swirl flow generator generates A granular material refinement apparatus characterized in that a swirling flow is generated in the crushing unit, and the fluid flowing through the flow path is crushed by the crushing unit.   The granular material refinement apparatus according to claim 1, wherein the crushing part is formed of crushing wing parts connected in a plurality of stages, and the crushing wing part has crushing means protruding to the flow path side.   The granular material refinement apparatus according to claim 2, wherein the crushing means includes a crush plate and a plurality of notches formed in the crush plate, and includes a plurality of crush projections. .   The granular material refinement apparatus according to any one of claims 1 to 3, wherein a central axis of the column is positioned on a central axis of the main body.   The granular material refinement apparatus according to any one of claims 1 to 4, wherein both or any one of the main body and the column has a circular or regular polygonal cross-sectional shape.   4. The granular material refining apparatus according to claim 2, wherein either one or both of the crushing means and the column body are formed of a porous ceramic.

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