JP2010158680A - Additional device for whirling type fine bubble generation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems of the conventional fine air bubble generation apparatus wherein, a large amount of fine bubbles is not generated without heightening the feed pressure, causing large noise, increasing power for a pump and a scale of a whole system, resulting in high cost. <P>SOLUTION: A circulation cylindrical lid (200) is provided immediately after the leading out port of the whirling chamber of a whirling type fine bubble generation apparatus, bubbles of large diameters are selectively sheared again. This structure allows generation of a large amount of fine bubbles with low energy consumption. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention mainly relates to a fine bubble generating apparatus that generates a large amount of fine bubbles in water or a liquid in a gas-liquid reaction tank such as a water tank, a bathtub, or a culture pond.

  In recent years, by generating fine bubbles in water, water purification, purification assistance, means for increasing dissolved oxygen in water, or the reaction rate and reaction efficiency of gas-liquid reaction tanks, Research, development, and commercialization have been carried out, such as generating fine bubbles in the bathtub to obtain a massage effect, thermal effect and cleaning effect, and removing dirt from parts, etc., but in order to generate a large amount of fine bubbles Required a high supply pressure.

  As a conventional fine bubble generating device, for example, Japanese Patent Laid-Open No. 2000-000447 discloses “a container body having a conical, frustoconical, bottle-shaped or wine bottle-shaped space, and a part of the inner wall circumferential surface of the space. And a pressurized liquid introduction port opened in the tangential direction thereof is disclosed.

  In Japanese Patent No. 3682286, “a container body having a hollow portion formed in a substantially rotational symmetry and having a diameter reduced toward one or both of the axial directions of the rotational symmetry axis, and a peripheral wall portion of the container body opened in a tangential direction. “Gas-liquid introduction hole” is disclosed.

  Japanese Patent Application Laid-Open No. 2007-111616 discloses that a container having a space in which a swirl flow can be generated (a space is a cylinder or a cone) and a pressurized liquid that generates the swirl flow in the space are guided into the container. And a pressurized liquid inlet provided on a side surface of the container.

JP 2000-000447 A Japanese Patent No. 3682286 JP 2007-111616 A

However, the above prior art has the following problems.
There are various swirl chamber shapes, such as columnar, conical, frustoconical, bottle-shaped, wine bottle-shaped, spherical, shell-shaped, and hemispherical. In addition to the unnecessary frictional resistance , an acceleration due to unnecessary deceleration and acceleration is generated, so that more energy is required and the supply pressure of the pressurized fluid needs to be increased.

The additional device of the swirl type fine bubble generator of the present invention was invented to increase the number of fine bubbles in the liquid per unit volume, and the circulation cylindrical lid (200) immediately after the outlet (103 ). the provided, outlet (103) shear air bubbles larger diameter ones and temporarily large amount entrained gas in the manner to be sheared again, a bubble with a large diameter was set to be finer.

Since a large amount of good fine bubbles can be generated, it is possible to reduce the size and cost of the entire fine bubble generation system. Furthermore, the noise can be reduced by shielding the generation of noise at the outlet through the lid and lowering the pressure of the pump. Further, since the energy consumption is reduced , the running cost is also reduced.

Sectional drawing of the side surface of the addition apparatus of the turning-type fine bubble generator of Example 1 Sectional drawing of the side surface of the addition apparatus of the swirl type fine bubble generator of Example 2 Sectional drawing of the side surface of the addition apparatus of the turning | swing type fine bubble generator of Example 3 Sectional drawing of the side surface of the addition apparatus of the turning-type fine bubble generator of Example 4

A circulating cylindrical lid (200) that re-shears a large-sized bubble that has been sheared at the outlet and a gas that has been temporarily mixed in a large amount is recirculated to the outlet (103) of the swirling microbubble generator. Prepare immediately.

FIG. 1 is a side cross-sectional view of an example in which the additional device according to claim 1 of the present invention is configured as a swirling fine bubble generating device. A cylindrical lid (200) for circulation installed immediately after the liquid outlet (103) for high-speed swirling, and a plurality of cylinder lids on the cylindrical circumference with a rear wall with the same inner diameter as the outlet (103) A circulation tubular portion (550) having a circulation flow path with a perforated hole and a predetermined space (502) formed on the outer periphery of the circulation tubular portion (550). A cylindrical lid with a discharge passage to the outside on the outer periphery is constructed in accordance with the turning center axis, and the gas-liquid in the form of a film containing fine bubbles discharged from the outlet (103) can pass through. In addition, air bubbles that are placed at a minimum interval and are sheared at the outlet port (103), where the central portion of the cylinder becomes negative pressure due to the centrifugal force generated by the swirling motion of the liquid that rotates at the outlet port (103) at a high speed. The large diameter object is selected again by the centripetal force due to the turning motion in the space (502). An additional device pivoting fine bubble generating apparatus was set to be.

FIG. 2 shows an example of an additional device for the swirling fine bubble generator according to claim 2 of the present invention. The additional device of the swirl type fine bubble generator according to claim 1 has a structure for further providing a bubble diameter selecting function and a function of promoting the foaming of dissolved gas, and the cylindrical cover for circulation (200) A predetermined gap is provided in the radial direction in the space (502) on the outer periphery of the circulation tubular portion (550), and a single or double tubular body (520) is installed in accordance with the turning center axis. A cylindrical body (520) having a plurality of slit-like or hole-like channels opened at one end thereof, or shortened by a fluid channel width. In the case of heavy, the outer cylindrical body (520) is an additional device for the swirling fine bubble generator according to claim 1, wherein the flow path is installed on the surface of the outlet (103).

FIG. 3 shows an example of an additional device of the swirling fine bubble generator according to claim 3 of the present invention. 3. The circulating cylindrical portion (550) of the circulating cylindrical lid (200) of the additional device for the swirling fine bubble generating device according to claim 1 or 2 is separated so as to be movable in the swirling axis direction. The connecting member 551 having a communication hole 552 having flexibility and elasticity is connected, and the initial position of the open end of the cylindrical portion for circulation (550) is the outlet port ( 103) The circulating tubular portion (550) is installed so that the gas-liquid in the form of a film containing fine bubbles released from 103) can pass through and the central portion of the tube is wider than the minimum interval at which the negative pressure is obtained. This is an additional device for the swirling fine bubble generator equipped with a mechanism that automatically adjusts the gap by axial thrust due to the pressure difference between the inside and outside of the tube. The principle of operation, during normal operation P1 = P2> P3 next outlet (103) to the side, when the foreign substance is entangled is P1 = P2 <circulating tubular portion acts thrust on the opposite side of the P3 becomes outlet (550) moves and adjusts the gap to provide a blocking prevention function.

FIG. 4 shows an example of an additional device for the swirling fine bubble generator according to claim 4 of the present invention. A cylindrical cover for circulation (200) of the additional device for the swirling fine bubble generator according to any one of claims 1, 2, and 3 and a member including the outlet port (103) are made of a magnetic material. A permanent magnet (540) or an excitation coil (541) is installed on the outer periphery of the circulation cylindrical lid (200) to form a magnetic circuit, and the outlet ( 103) and the circulating end portion (550) of the circulation tubular portion (550), the liquid in the form of a film discharged at a high speed is allowed to flow, so that the generated current flows in the liquid in a ring shape . function to have a, also the shape is an additional device can become swivel fine bubble generating device without disturbing the fine bubble generation because there is no changing.

  The present invention is mainly applicable to a fine bubble generating device that generates a large amount of fine bubbles in water or in a gas-liquid reaction tank such as a water tank, a bathtub, or a culture pond.

103 outlet 200 circulation cylindrical lid 201 circulation hole 502 space 520 tubular body 540 permanent magnet 541 excitation coil 550 circulation tubular portion 551 support member 552 communication hole

Claims (4)

A cylindrical lid for circulation (200) installed immediately after the outlet port (103) for the high-speed swirling liquid of the swirling fine bubble generator , and has a rear wall with an inner diameter similar to that of the outlet port (103) A circulation tubular portion (550) having a circulation flow path having a plurality of holes perforated on a tubular periphery, and a predetermined space (502) is formed on the outer periphery of the circulation tubular portion (550). A cylindrical lid portion having a discharge passage to the outside on the outer periphery of the space (502) is configured in accordance with the turning center axis, and a film shape including fine bubbles discharged from the outlet port (103) since liquid is able to pass, and a negative pressure in the centrifugal force caused by the turning motion of the liquid center portion of the cylinder at a high speed turning at the outlet (103), placed at a minimum interval, said outlet ( centripetal things large diameter sheared bubbles 103) by pivoting movement in the space (502) More selective, additional device was set to be sheared again pivotally fine bubble generator. A single or double cylindrical body (520) is provided with a predetermined gap in the radial direction in the space (502) of the outer periphery of the cylindrical section for circulation (550) of the cylindrical lid for circulation (200 ). Are arranged so as to be aligned with the turning center axis , and one end of the cylindrical body (520) has a plurality of slit-like or hole-like channels opened, or is shortened by an amount corresponding to the fluid channel width. In the case of (2), the flow path is on the front side, and in the case of double, the outer cylindrical body (520) is provided with the flow path on the surface of the outlet (103) . Additional equipment . The circulation tubular portion (550) of the circulation tubular lid (200) is separated so as to be movable in the direction of the turning axis , and is supported by a support member 551 having a communication hole 552 having flexibility and elasticity. and the connection configuration, the initial position of the open end of the circulation tubular portion (550), gas-liquid became the outlet (103) membrane containing fine bubbles released from during operation Installed so that the center of the cylinder is wider than the minimum interval at which negative pressure can pass, and the gap is automatically adjusted by the axial thrust due to the pressure difference between the inside and outside of the circulating cylinder (550) The addition device of the swirl type fine bubble generating device according to claim 1 or 2 , further comprising a mechanism for performing the operation . Wherein the circulating tubular cap (200), said outlet port and a member comprising a (103) made of a magnetic material, the permanent magnet (540) or the exciting coil on the outer periphery of the circular tubular cap (200) ( 541) by installing a magnetic circuit, a high speed in a gap open ends of the circulating tubular portion and the outlet of the magnetic flux density of the air gap of the magnetic circuit is maximized (103) (550) The addition device of the swirling fine bubble generating device according to any one of claims 1, 2, and 3, wherein the discharged film-like liquid flows and a generated current flows in the liquid in a ring shape .

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