JP4678617B2 - Additional device for swirling microbubble generator - Google Patents

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, purification of water, assistance in purification, means for increasing dissolved oxygen in water, or the reaction speed 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 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 that is formed substantially rotationally symmetric and has a diameter reduced toward one or both of the axial directions of the rotational symmetry axis, and a tangential opening is formed in the peripheral wall portion of the container body. “Gas-liquid introduction hole” is disclosed.

  Japanese Patent Application Laid-Open No. 2007-111616 discloses that a container having a space in which a swirling flow can be generated (a space is a cylinder or a cone) and a pressurized liquid that generates the swirling 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 large-sized bubble was refined by re-shearing the large-sized bubble sheared at the outlet (103) and the gas mixed in a large amount temporarily.

  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

  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 generator. 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 structure in which a cylindrical lid portion having a discharge passage to the outside on the outer periphery is aligned with the turning center axis is configured, and the gas-liquid in the form of a film containing fine bubbles discharged from the outlet (103) is circulated. The swirl of the liquid that can pass through the gap between the open end of the cylindrical portion (550) and the member having the outlet port (103) , and the center portion of the cylinder rotates at the outlet port (103) at a high speed Installed at a minimum interval, resulting in negative pressure due to centrifugal force due to movement, and shearing at the outlet (103) In the selectively by centripetal force caused by the turning motion of a large diameter ones said space (502) of the bubble, which is additional device the pivoting fine bubble generating device as is sheared again.

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. The cylindrical body (520) is provided with a plurality of slit-like or hole-like flow paths at one end, or the axial length of the tubular body (520 ) is shortened by the fluid flow path width. The flow path is arranged on the opposite side of the outlet (103) surface in the case of heavy, and the outer cylindrical body (520) in the case of double has the flow path installed on the side of the outlet (103). Is an additional device of the swirl type fine bubble generator

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 gas-liquid in the form of a film containing the fine bubbles released from can pass through the gap between the opened end of the circulation tubular portion (550) and the member having the outlet (103) , In addition, a mechanism is installed in which the central portion of the cylinder is wider than the minimum interval at which negative pressure is obtained, and the gap is automatically adjusted by the axial thrust due to the pressure difference between the inside and the outside of the circulation tubular portion (550). It is an addition apparatus of the swirl type fine bubble generator provided with. The principle of operation is P1 = P2> P3 during normal operation, and P1 = P2 <P3 when foreign matter is entangled, and thrust is applied to the opposite side of the discharge port. (550) moves and adjusts the gap to provide a blocking prevention function.

  The present invention can be mainly applied to a fine bubble generator 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 Cylindrical body 550 Cycling cylindrical portion 551 Support member 552 Communication hole

Claims (3)

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 the circulation tubular portion can pass through the gap between the member comprising the opening freed the end portion and the outlet of (550) (103), and the central portion of the cylinder is the outlet (103) Installed at a minimum interval, resulting in negative pressure due to centrifugal force due to the swirling motion of the liquid swirling at high speed, Alternatively by centripetal force caused by the turning motion of the outlet (103) the space things large diameter sheared bubbles (502), the suction towards the plurality of holes on the circumference of the circulating tubular portion (550) An additional device for the swirling fine bubble generator , which is rarely sheared again at the outlet (103) . 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 in accordance with the turning center axis, and the cylindrical body (520) is provided with a plurality of slit-like and hole-shaped flow paths at one end thereof , or the axial length of the cylindrical body (520). In the case of a single layer, the channel is on the opposite side of the outlet (103) surface, and in the case of a double layer, the outer cylindrical body (520) has a channel on the outlet (103). The additional device of the swirl type fine bubble generating device according to claim 1 installed on the surface side. 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. In the connected configuration, the initial position of the opened end of the circulation tubular portion (550) is a film-like gas-liquid containing fine bubbles discharged from the outlet (103) during operation. Installation is such that it can pass through the gap between the open end of the cylindrical portion for circulation ( 550) and the member having the outlet port (103) , and the central portion of the cylinder is wider than the minimum interval at which negative pressure is applied. 3. The swirling fine bubble generating device according to claim 1, further comprising a mechanism that automatically adjusts a gap by an axial thrust due to a pressure difference between the inside and the outside of the cylindrical portion for circulation (550). Additional equipment.

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