WO2022123867A1 - Dispositif de production de liquide contenant des bulles d'air - Google Patents

Dispositif de production de liquide contenant des bulles d'air Download PDF

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Publication number
WO2022123867A1
WO2022123867A1 PCT/JP2021/035868 JP2021035868W WO2022123867A1 WO 2022123867 A1 WO2022123867 A1 WO 2022123867A1 JP 2021035868 W JP2021035868 W JP 2021035868W WO 2022123867 A1 WO2022123867 A1 WO 2022123867A1
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WO
WIPO (PCT)
Prior art keywords
casing
rotating body
bubble
containing liquid
manufacturing apparatus
Prior art date
Application number
PCT/JP2021/035868
Other languages
English (en)
Japanese (ja)
Inventor
太志 吉田
輝海 森
陽介 畑山
Original Assignee
Ｋｙｂ株式会社
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Filing date
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Application filed by Ｋｙｂ株式会社 filed Critical Ｋｙｂ株式会社
Publication of WO2022123867A1 publication Critical patent/WO2022123867A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/74—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with rotary cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D31/00—Pumping liquids and elastic fluids at the same time

Definitions

  • the present invention relates to a bubble-containing liquid manufacturing apparatus.
  • Patent Document 1 discloses a conventional bubble-containing liquid manufacturing apparatus.
  • This bubble-containing liquid manufacturing apparatus includes a casing and a rotating body.
  • the casing circulates the gas and liquid that have flowed into the casing.
  • the rotating body is rotatably arranged in the casing around a predetermined axis.
  • the bubble-containing liquid manufacturing apparatus applies shear stress to the bubbles and liquid flowing between the inner wall of the casing and the rotating body by rotating the rotating body in the casing by a rotation driving source to refine the gas bubbles.
  • the present invention has been made in view of the above-mentioned conventional circumstances, and it is an object to be solved to provide a bubble-containing liquid manufacturing apparatus capable of suppressing the generation of air pools in the casing.
  • the bubble-containing liquid manufacturing apparatus includes a casing and a shearing mechanism.
  • the casing has a cylindrical shape in which an inflow port for gas and liquid to flow in is formed on one end side, and an outflow port in which gas and liquid flow out from the inflow port and flow through the inside is formed on the other end side. ..
  • the shearing mechanism applies a shearing force to the gas and liquid flowing in the casing.
  • the shearing mechanism portion has a rotating body, a rotation imparting portion, and a facing portion.
  • the rotating body has a cylindrical shape that is rotatably arranged in a casing around an axis.
  • the rotation imparting portion applies a rotational force around the axis to the rotating body.
  • the facing portion is provided on the inner wall portion of the casing, and has a cylindrical shape facing the outer peripheral portion of the rotating body through a predetermined gap.
  • the outlet faces the space formed between one end surface of the rotating body in the axial direction and the inner surface of the casing facing the one end surface.
  • the outlet may open to the inner surface of the inner surface of the casing extending along the direction intersecting the axial direction of the rotating body.
  • the casing can form an outflow path communicating with the outlet.
  • the outflow path can be formed extending along the axial direction of the rotating body.
  • the outflow path can be formed at a position distant from the axis of the rotating body in the centrifugal direction.
  • a plurality of outlets can be formed.
  • the inlet may be configured to have a liquid inlet into which the liquid flows.
  • the cross-sectional area of the outlet may be smaller than the cross-sectional area of the liquid inlet.
  • the inlet may be configured to have a gas inlet that opens at a position different from the liquid inlet and into which gas flows.
  • the gas inlet can be opened facing the gap between the outer peripheral portion and the facing portion of the rotating body.
  • the bubble-containing liquid manufacturing apparatus of the present invention may further include a pump unit.
  • the pump portion has a wing portion.
  • the wing portion is provided at an end portion of the rotating body opposite to the space side between the inner surface of the casing and rotates with the rotation of the rotating body. Then, the gas inlet can be opened at a position closer to the outlet than the wing.
  • FIG. 1 is a vertical sectional view schematically showing the structure of the bubble-containing liquid manufacturing apparatus which concerns on Embodiment 1.
  • FIG. 2 is a sectional view taken along line II-II in FIG.
  • FIG. 3 is a cross-sectional view taken along the line III-III in FIG.
  • It is a vertical sectional view schematically showing the structure of the bubble-containing liquid production apparatus which concerns on Embodiment 2.
  • FIG. It is a vertical sectional view schematically showing the structure of the bubble-containing liquid manufacturing apparatus which concerns on Embodiment 3.
  • the size of the bubbles includes, for example, ultrafine bubbles (UFB: ultrafine bubble) having a diameter of 1 ⁇ m or less, microbubbles (MB: micro bubble) having a diameter of 100 ⁇ m or less, and millibubbles (milli bubble) having a diameter of 1 mm or less.
  • UFB ultrafine bubble
  • MB micro bubble
  • millibubbles milli bubble
  • the size of the bubbles contained in the bubble-containing liquid may be any size, but is typically UFB.
  • the bubble-containing liquid manufacturing apparatus 1 of the first embodiment (hereinafter, also simply referred to as an apparatus 1) includes a casing 10, a shear mechanism portion 20, and a pump portion 30, as shown in FIGS. 1 to 3.
  • the casing 10 is made of a metal material or a synthetic resin material. As shown in FIG. 1, the casing 10 has a cylindrical shape, and its axis is arranged along the horizontal direction. The casing 10 allows coolant as a liquid and air as a gas to flow from one end 10A side in the axial direction to the other end 10B side.
  • the casing 10 has a case main body 11 and a lid portion 12.
  • the case body 11 is a member arranged on one end 10A side in the axial direction of the casing 10.
  • the case body 11 has a bottomed cylindrical shape with one end open.
  • the case body 11 has a bottom portion 11A and a peripheral wall portion 11B, and is a single member in a form in which one shaft end of the peripheral wall portion 11B is closed by the bottom portion 11A.
  • the lid portion 12 is a member arranged on the other end portion 10B side in the axial direction of the casing 10.
  • the lid portion 12 closes the opening-side end of the case body 11 in a liquid-tight manner.
  • the lid portion 12 has a stepped shape in which a large diameter portion 12A having an outer diameter and an inner diameter substantially equal to that of the case body 11 and a small diameter portion 12B having an outer diameter and an inner diameter smaller than the large diameter portion 12A are connected in the axial direction. It has a tubular shape.
  • a central hole 12C is formed in the lid portion 12.
  • the central hole 12C is formed so as to penetrate the lid portion 12 in the axial direction.
  • a bearing member B that rotatably supports the shaft member 24, which will be described later, is inserted into the center hole 12C.
  • the casing 10 forms a first inlet 13 (exemplified as a liquid inlet), a second inlet 14 (exemplified as a gas inlet), and an outlet 15.
  • the first inflow port 13 and the second inflow port 14 are formed on the end portion 10A side of the casing 10, and the outflow port 15 is formed on the end portion 10B side of the casing 10.
  • the bubble-containing liquid manufacturing apparatus 1 has a first inlet 13 into which the coolant flows, and a second inlet 14 which is opened at a position different from the first inlet 13 and into which air flows. It has two inlets.
  • the first inflow port 13, the second inflow port 14, and the outflow port 15 each open to the inner surface of the casing 10 and communicate with each other through the internal space of the casing 10. Coolant and air are supplied from the first inflow port 13 and the second inflow port 14, respectively.
  • the coolant flowing in from the first inflow port 13 and the air flowing in from the second inflow port 14 flow through the casing 10 while being subjected to shearing force in the shearing mechanism section 20 described later to become a bubble-containing liquid, and become an outflow port 15. Is sent out of the casing 10.
  • the first inflow port 13 is on the end portion 10A side of the casing 10 and is formed in the center of the bottom portion 11A of the case body 11. Specifically, a first inflow path 13A is formed at the center of the bottom portion 11A so as to penetrate along the axial direction.
  • the first inflow port 13 is an opening on the downstream end side of the first inflow path 13A.
  • a pipeline (not shown) through which the coolant flows is connected to the upstream side of the first inflow path 13A via the joint portion 13B.
  • the upstream side of this pipeline communicates with a storage tank (tank) (not shown) of the grinding machine.
  • the second inflow port 14 is on the end portion 10A side of the casing 10 and is formed on the peripheral wall portion 11B of the case main body 11.
  • a second inflow path 14A is formed through the peripheral wall portion 11B.
  • the second inflow path 14A is formed so as to vertically penetrate the peripheral wall portion 11B at a position corresponding to the upper end portion of the casing 10 in the installed state.
  • the second inflow port 14 is an opening on the downstream end side of the second inflow path 14A.
  • a pipeline (not shown) through which compressed air flows is connected to the upstream side of the second inflow path 14A via the joint portion 14B.
  • the upstream side of this pipeline communicates with a source of compressed air such as a compressor.
  • the outlet 15 is open on the inner surface of the casing 10 extending in a direction intersecting the axial direction of the casing 10. Specifically, as shown in FIGS. 1 and 3, the outlet 15 is formed on the end portion 10B side of the casing 10 and at the bottom of the large diameter portion 12A of the lid portion 12. An outflow path 15A is formed through the bottom of the large diameter portion 12A. The outflow port 15 is an opening on the upstream end side of the outflow path 15A. As shown in FIG. 1, the inner surface A1 of the bottom portion of the large diameter portion 12A is formed so as to extend in a direction substantially orthogonal to the axial direction of the casing 10. The outlet 15 is open to the inner surface A1.
  • the outflow path 15A is formed at a position separated in the centrifugal direction from the central axis of the lid portion 12. Specifically, the outflow path 15A is formed so as to extend along the central axis of the lid portion 12 at a position offset upward from the central axis of the lid portion 12.
  • the central axis of the lid portion 12 has the same meaning as the central axis of the casing 10, and the central axis of the casing 10 coincides with the rotation axis of the rotating body 21 described later.
  • a pipeline (not shown) for delivering the bubble-containing liquid generated by the device 1 to the grinding machine side is connected to the downstream end side of the outflow path 15A via the joint portion 15B.
  • the upstream side of this pipeline may be connected to the above-mentioned storage tank, or may directly communicate with the discharge port for discharging the coolant to the processing point.
  • the cross-sectional area of the outflow port 15 is smaller than the cross-sectional area of the first inflow port 13. Specifically, the opening diameter of the outlet 15 is about 25 mm, while the opening diameter of the first inlet 13 is about 32 mm, and the cross-sectional area ratio is about 0.6 times.
  • the cross-sectional area ratio between the outlet 15 and the first inlet 13 can be, for example, about 0.5 times to 0.8 times.
  • the shearing mechanism unit 20 applies a shearing force to the coolant and air flowing in the casing 10.
  • the shearing mechanism portion 20 includes a rotating body 21, a motor 22 (exemplified as a rotation imparting portion), and an opposing member 23 (exemplified as an opposing portion).
  • the shearing mechanism portion 20 is configured by arranging the rotating body 21 and the facing member 23 so as to face each other.
  • the shearing mechanism portion 20 rotates the rotating body 21 by the motor 22 to cause relative rotation (relative movement) between the rotating body 21 and the facing member 23.
  • a mixed fluid of coolant and air flows between the rotating body 21 and the facing member 23.
  • the shearing mechanism portion 20 is configured to apply a shearing force to the mixed fluid by the relative movement between the rotating body 21 and the facing member 23.
  • the rotating body 21 is formed in a cylindrical shape.
  • the rotating body 21 is rotatably arranged in the casing 10 around the central axis of the rotating body 21.
  • the central axis of the rotating body 21 is arranged coaxially with the central axis of the casing 10. That is, in the present embodiment, the rotating body 21 is arranged so that its central axis coincides with the central axis of the casing 10.
  • the rotating body 21 is made of a metal material or a synthetic resin material.
  • the rotating body 21 includes a peripheral wall portion 21A, a bottom wall portion 21B, and a tubular member 21C.
  • the peripheral wall portion 21A is a portion corresponding to the inner peripheral portion of the rotating body 21.
  • the peripheral wall portion 21A has a cylindrical shape.
  • the bottom wall portion 21B is a portion corresponding to one end portion in the axial direction of the rotating body 21.
  • the bottom wall portion 21B has a disk shape and closes one end of the peripheral wall portion 21A in the axial direction.
  • the tubular member 21C is a portion corresponding to the outer peripheral portion of the rotating body 21.
  • the tubular member 21C has a cylindrical shape having a diameter larger than that of the peripheral wall portion 21A, and is attached to the outer periphery of the peripheral wall portion 21A.
  • the end surface (one end surface in the axial direction of the rotating body) on the bottom wall portion 21B side faces the inner surface of the lid portion 12 of the casing 10, and the outer peripheral surface of the tubular member 21C is formed.
  • the casing 10 is housed in the casing 10 so as to face the inner peripheral surface of the case body 11.
  • a space S is formed between the bottom wall portion 21B and the lid portion 12.
  • the outlet 15 faces the space S and is open.
  • the distance between the bottom wall portion 21B and the lid portion 12 is about 0.2 to 0.33 times (30 mm to 50 mm) the outer diameter (about 150 mm) of the rotating body 21.
  • the tubular member 21C forms an annular gap C at a predetermined interval from the facing member 23.
  • the second inflow port 14 is open facing the gap C.
  • the distance between the tubular member 21C and the facing member 23 in the annular gap C is about 2 mm.
  • the size of the distance between the tubular member 21C and the facing member 23 can be appropriately set according to the viscosity of the flowing liquid and the like, regardless of the outer diameter of the rotating body 21.
  • the distance between the gaps C can be about 1 mm to 4 mm.
  • the size of the cross-sectional area of the entire annular gap C is larger than the cross-sectional area of the first inflow port 13.
  • the first structural surface S1 is provided on the outer peripheral portion of the rotating body 21.
  • the first structural surface S1 is provided on the outer peripheral portion of the tubular member 21C.
  • the first structural surface S1 is a cylindrical curved surface centered on the central axis of the rotating body 21.
  • a plurality of recesses S10 are formed on the first structural surface S1.
  • the plurality of recesses S10 are circular dimples.
  • the plurality of recesses S10 are arranged at predetermined intervals in the axial direction and the circumferential direction on the first structural surface S1.
  • the motor 22 is arranged outside the end portion 10B side of the casing 10.
  • One end of the shaft member 24 is connected to the motor 22.
  • the shaft member 24 is rotatably supported by a bearing member B arranged in the central hole 12C of the lid portion 12.
  • the other end side of the shaft member 24 projects cantileverly into the casing 10 and is connected to the rotating body 21.
  • the shaft member 24 transmits the rotational force of the motor 22 to the rotating body 21. That is, the rotating body 21 is subjected to rotational force from the motor 22 via the shaft member 24.
  • the facing member 23 is a cylindrical member provided on the inner wall portion of the casing 10.
  • the inner peripheral surface of the facing member 23 faces the outer peripheral surface of the tubular member 21C of the rotating body 21.
  • an annular gap C is formed between the facing member 23 and the tubular member 21C.
  • the second structural surface S2 is provided on the inner peripheral portion of the facing member 23.
  • the second structural surface S2 is a cylindrical curved surface centered on the central axis of the case body 11.
  • a plurality of recesses S20 are formed on the second structural surface S2.
  • the plurality of recesses S20 are circular dimples, and are arranged at predetermined intervals in the axial direction and the circumferential direction on the second structural surface S2, which is the same as the first structural surface S1.
  • the pump unit 30 is configured to be able to transfer the coolant from the first inlet 13 to the outlet 15 by driving the motor 22.
  • the pump portion 30 has a base portion 31 and a plurality of wing portions 32.
  • the base portion 31 is attached to an end portion of the rotating body 21 opposite to the end portion corresponding to the space S, and rotates integrally with the rotating body 21.
  • the base portion 31 has a disk shape having an outer diameter equivalent to the outer diameter of the tubular member 21C in the rotating body 21.
  • the plurality of wing portions 32 are provided integrally with the base portion 31 so as to project toward the bottom portion 11A side of the case main body 11. As shown in FIG. 3, the plurality of wing portions 32 are formed so as to extend radially from the central portion of the base portion 31 toward the peripheral portion while swirling.
  • the pump unit 30 constitutes a centrifugal pump (centrifugal pump), and the plurality of blade units 32 correspond to centrifugal impellers. That is, the pump portion 30 forms a flow of coolant in the centrifugal direction from the center (rotation axis) of the base portion 31.
  • the plurality of blade portions 32 apply a turning force to the coolant to increase energy, and from the first inflow port 13, an annular gap C between the inner peripheral surface of the casing 10 and the outer peripheral surface of the rotating body 21 and an outflow port. Form a discharge pressure to transfer the coolant towards 15.
  • each wing portion 32 is formed in a streamlined shape so that the width increases from the inner peripheral side to the outer peripheral side thereof. As a result, a sufficient width of the flow path 33 formed between the blade portions 32 is secured, and the width of the flow path 33 is made uniform. As a result, it is possible to reduce the resistance of the coolant flowing through the flow path 33.
  • the second inflow port 14 is open facing the gap C between the outer peripheral surface of the rotating body 21 and the inner peripheral surface of the facing member 23.
  • the opening position of the second inflow port 14 is a position closer to the outflow port 15 than the wing portion 32 of the pump portion 30 in the axial direction of the casing 10. Therefore, the air from the second inflow port 14 flows into the downstream side of the pump unit 30.
  • the second inflow port 14 is closer to the outflow port 15 than the pump portion 30 and corresponds to the most upstream side of the first structural surface S1 and the second structural surface S2 (the position corresponding to the most upstream side of the first structural surface S1 and the second structural surface S2. It is preferably formed at a position closer to the first inflow port 13.
  • the motor 22 is activated and the rotating body 21 rotates at a predetermined rotation speed (for example, 3000 rpm).
  • a predetermined rotation speed for example, 3000 rpm.
  • the pump unit 30 rotates together with the rotating body 21, and the coolant is sucked from the storage tank of the grinding machine (not shown) and introduced into the casing 10 from the first inflow port 13.
  • the coolant introduced into the casing 10 from the first inflow port 13 receives a swirling action by the pump unit 30 and is supplied to the gap C at a predetermined discharge pressure. Further, from the second inflow port 14, compressed air from a compressor or the like (not shown) is introduced into the casing 10 at a predetermined pressure and mixed with the coolant in the gap C. The coolant mixed with air flows between the first structural surface S1 and the second structural surface S2 toward the downstream side. At this time, the first structural surface S1 of the rotating body 21 rotates relative to the second structural surface S2 of the opposing member 23. As a result, the coolant containing air receives shear stress, and the bubbles become finely divided bubble-containing coolant (bubble-containing liquid).
  • two structural surfaces S1 and S2 are formed, a first structural surface S1 on the rotating body 21 side and a second structural surface S2 on the casing 10 (opposing member 23) side, and these two structures are formed.
  • a shear force is applied to the coolant between the uneven surfaces of the surfaces S1 and S2. Therefore, an extremely large shear energy (energy) can be applied to the coolant as compared with the case where there is only one uneven surface or the case where the uneven surface is not formed, and the miniaturization of bubbles can be promoted.
  • the size of the cross-sectional area of the entire annular gap C is larger than the size of the cross-sectional area of the first inflow port 13, the pressure loss of the coolant flowing through the gap C is reduced.
  • the bubble-containing liquid generated between the first structural surface S1 and the second structural surface S2 reaches the space S between the bottom wall portion 21B of the rotating body 21 and the lid portion 12 of the casing 10, and reaches the outflow port 15. Outflow from. Since the outflow port 15 is open facing the space S, the bubble-containing liquid can flow out without causing an air pool in the space S. Further, since the outflow port 15 is provided with a cross-sectional area smaller than the cross-sectional area of the first inflow port 13, it is delivered to the grinding machine side (not shown) with sufficient discharge pressure by the pump unit 30.
  • the bubble-containing liquid enters the outflow path 15A from the outflow port 15 and flows out to the outside of the casing 10 through the outflow path 15A.
  • the outflow path 15A extends along the axial direction of the rotating body 21. That is, the outflow path 15A extends in the same direction as the flow direction of the bubble-containing liquid in the casing 10. Therefore, the outflow of the bubble-containing liquid from the casing 10 is promoted.
  • the outlet 15 is formed between the end surface on the bottom wall portion 21B side, which is one end surface of the rotating body 21 in the axial direction, and the inner surface of the lid portion 12, which is the inner surface of the casing 10 facing the end surface. It is open facing the space S.
  • This space S is located downstream of the shear mechanism portion 20. Therefore, the bubble-containing liquid that has reached the space S has the bubble miniaturization process completed in the shear mechanism portion 20 on the upstream side. Therefore, only the bubble-containing liquid for which the bubble miniaturization treatment has been completed flows out from the outlet 15, and the liquid in the middle of the treatment does not flow out.
  • the bubble-containing liquid manufacturing apparatus 1 includes a casing 10 and a shearing mechanism section 20.
  • the casing 10 has a first inlet 13 and a second inlet 14 formed on one end 10A side, and flows into the other end 10B side from the first inlet 13 and the second inlet 14 to the inside. It has a cylindrical shape in which the coolant and the outflow port 15 through which air flows out are formed.
  • the shearing mechanism unit 20 applies a shearing force to the coolant and air flowing in the casing 10 to generate a bubble-containing liquid.
  • the shearing mechanism portion 20 has a rotating body 21, a motor 22 as a rotation imparting portion, and an opposing member 23 as an opposing portion.
  • the rotating body 21 has a cylindrical shape that is rotatably arranged in the casing 10 around an axis.
  • the motor 22 applies a rotational force around the axis to the rotating body 21.
  • the facing member 23 is provided on the inner wall portion of the casing 10 and has a cylindrical shape facing the outer peripheral portion of the rotating body 21 via a predetermined gap.
  • the outlet 15 is a space S formed between an end surface on the bottom wall portion 21B side, which is one end surface of the rotating body 21 in the axial direction, and an inner surface of the lid portion 12, which is the inner surface of the casing 10 facing the end surface. It is open facing the roof.
  • the outlet 15 is open in the space S.
  • the space S is a space between one end surface of the rotating body 21 and the inner surface of the casing 10, and is a space at the axial end in the internal space of the casing 10. Therefore, the bubble-containing liquid that has entered the space S can be discharged from the outlet 15 without staying.
  • the bubble-containing liquid manufacturing apparatus 1 can suppress the generation of air pools in the casing 10.
  • the outlet 15 is open in the space S, and this space S is located on the downstream side of the shear mechanism portion 20. Therefore, the bubble-containing liquid manufacturing apparatus 1 can suitably flow out the treated bubble-containing liquid without flowing out the bubble-containing liquid in the middle of the bubble miniaturization treatment.
  • the outlet 15 is open to the inner surface A1 of the inner surface of the casing 10 extending along the direction orthogonal to the axial direction of the casing 10. Therefore, the bubble-containing liquid that flows along the axial direction of the casing 10, which is the same direction as the axial direction of the rotating body 21, can be introduced into the outlet 15 as it is in the flow direction. As a result, the bubble-containing liquid can be efficiently discharged from the casing 10.
  • the casing 10 forms an outflow path 15A communicating with the outflow port 15.
  • the outflow path 15A is formed so as to extend along the axial direction of the rotating body 21. Therefore, the flow of the bubble-containing liquid flowing through the outflow passage 15A can be made to flow along the axial direction which is the flow direction in the casing 10. As a result, the bubble-containing liquid can be efficiently discharged from the casing 10.
  • the outflow path 15A is formed at a position separated in the centrifugal direction from the central axis of the lid portion 12 (the axis of the rotating body 21). Specifically, the outflow path 15A is formed in the casing 10 in which the central axis is arranged along the horizontal direction, extending along the central axis of the lid portion 12 at a position offset upward from the central axis of the lid portion 12. Has been done. Therefore, it is possible to promote the discharge of air and suppress the generation of air pools. That is, since the coolant, which is a liquid constituting the bubble-containing liquid, collects in the centrifugal direction due to centrifugal force, it is easily discharged from the outlet 15. Therefore, the retention of fluid (both gas and liquid) in the casing 10 is less likely to occur, and as a result, the generation of air pools can be suppressed.
  • the inflow port is configured to have a first inflow port 13 as a liquid inflow port into which a liquid flows.
  • the cross-sectional area of the outlet 15 is smaller than the cross-sectional area of the first inlet 13. Therefore, the pressure loss of the inflowing liquid can be reduced, and the suction property can be improved.
  • the inflow port is configured to have a second inflow port 14 as a gas inflow port.
  • the second inflow port 14 opens at a position different from that of the first inflow port 13 to allow air to flow in. Therefore, the coolant and the air are made to flow in from separate inlets, and the decrease in pressure can be suppressed.
  • the second inflow port 14 is open facing the annular gap C between the outer peripheral portion of the rotating body 21 and the facing member 23. Therefore, air can be efficiently flowed into the casing 10. Further, the second inflow port 14 opens in the gap C at a position closer to the end portion 10A in the casing 10. Therefore, the shearing force of the shearing mechanism portion 20 can be applied over a longer distance.
  • the bubble-containing liquid manufacturing apparatus 1 further includes a pump unit 30.
  • the pump portion 30 has a wing portion 32.
  • the wing portion 32 is provided at an end portion of the rotating body 21 opposite to the space S side between the inner surface of the casing 10 and rotates with the rotation of the rotating body 21.
  • the second inflow port 14 is open at a position closer to the outflow port 15 than the wing portion 32. Therefore, it is possible to prevent air from entering the wing portion 32 and prevent a pressure drop. That is, in the bubble-containing liquid manufacturing apparatus 1, air is introduced into the casing 10 on the downstream side of the wing portion 32. Therefore, in the wing portion 32, the coolant before the air from the second inflow port 14 is mixed flows, and the decrease in pressure can be suppressed.
  • the bubble-containing liquid manufacturing apparatus 1 includes a pump unit 30, a pump is separately provided on the pipeline side for feeding coolant to the first inlet 13 or on the pipeline side for delivering the bubble-containing liquid from the outlet 15. No need to install. Therefore, it is possible to simplify the system provided with the bubble-containing liquid manufacturing apparatus 1.
  • the bubble-containing liquid manufacturing apparatus 201 according to the second embodiment will be described.
  • the bubble-containing liquid manufacturing apparatus 201 of the first embodiment has a second outlet 216 in addition to the outlet 15 similar to that of the first embodiment. Is different from.
  • the same configurations as those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.
  • the second outlet 216 is open facing the space S and is formed on the inner surface A1 of the bottom of the large diameter portion 12A. It is open.
  • the second outlet 216 is on the end 10B side of the casing 10 and is formed at the bottom of the large diameter portion 12A of the lid portion 12.
  • a second outflow path 216A is formed through the bottom of the large diameter portion 12A.
  • the second outflow port 216 is an opening on the upstream end side of the second outflow path 216A.
  • the second outflow path 216A is formed so as to extend along the central axis of the lid portion 12 at a position offset downward from the central axis of the lid portion 12.
  • the second outflow passage 216A is formed vertically and vertically symmetrically with the outflow passage 15A with the central axis of the lid portion 12 interposed therebetween.
  • a pipeline (not shown) is connected to the downstream side of the second outflow passage 216A. This pipeline joins the pipeline connected to the downstream side of the outflow channel 15A on the downstream side.
  • a shaft member 24 connected to the rotating body 21 is inserted in the center of the lid portion 12, and a bearing member that rotatably supports the shaft member 24. B is placed.
  • a mechanism portion for rotationally supporting the rotating body 21 is provided on the end portion 10B side of the casing 10, so that space is restricted. Therefore, it may not be possible to secure a cross-sectional area of a desired size with only one outlet. However, by forming a plurality of outlets such as the outlet 15 and the second outlet 216, it is possible to easily secure a cross-sectional area having a desired size.
  • the bubble-containing liquid manufacturing apparatus 301 differs from the bubble-containing liquid manufacturing apparatus 1 of the first embodiment in that it has an outlet 315 instead of the outlet 15 of the first embodiment.
  • the same configurations as those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.
  • the outlet 315 is similar to the outlet 15 in that the outlet 315 is open facing the space S.
  • the outlet 315 differs from the outlet 15 of the first embodiment in that the outlet 315 is open to the inner surface of the inner surface of the casing 10 extending in the axial direction of the casing 10.
  • the outlet 315 is formed on the end portion 10B side of the casing 10 and on the peripheral wall portion of the large diameter portion 12A of the lid portion 12.
  • the outflow port 315 opens at the uppermost position in the internal space of the casing 10 and at a position closest to the end portion 10B in the bubble-containing liquid manufacturing apparatus 301 in the installed state.
  • An outflow path 315A is formed through the peripheral wall portion of the large diameter portion 12A.
  • the outflow port 315 is an opening on the upstream end side of the outflow path 315A.
  • the inner surface A2 of the peripheral wall portion of the large diameter portion 12A is formed so as to extend in a direction along the axial direction of the casing 10.
  • the outlet 315 is open to the inner surface A2.
  • the outflow path 315A is formed so as to extend in the vertical direction at a position close to the bottom of the large diameter portion 12A in the peripheral wall portion of the large diameter portion 12A.
  • the extension direction of the outflow path 315A may be a direction that intersects the central axis of the lid portion 12, or is twisted with respect to the central axis of the lid portion 12, such as the tangential direction of the peripheral wall portion of the lid portion 12. It may extend in the direction of the relationship.
  • the outlet 315 is open in the space S. Since the space S is the space at the axial end in the internal space of the casing 10, the bubble-containing liquid that has entered the space S can be discharged from the outflow port 315 without staying.
  • the outlet 315 is open at the uppermost position in the internal space of the casing 10 and at the position closest to the end portion 10B. Therefore, even if an air pool is generated in the space S, it can be quickly discharged from the outlet 315.
  • the rotating body may have, for example, a conical trapezoidal shape, a shape having a step formed on the outer circumference, or the like.
  • the facing portion that opposes the outer peripheral portion of the rotating body through a predetermined gap may also have a shape that follows the shape of the outer peripheral portion of the rotating body.
  • coolant and air are exemplified as the liquid and gas constituting the bubble-containing liquid, but this is not essential.
  • the gas forming bubbles include air, nitrogen, oxygen, ozone, carbon dioxide and the like.
  • the liquid constituting the bubble-containing liquid include coolant, cutting oil, water (tap water, purified water, seawater, etc.) and the like. The gas and liquid constituting these bubble-containing liquids can be appropriately selected depending on the intended use.
  • the shear mechanism portion has an example of having a first structural surface and a second structural surface arranged to face the first structural surface, but this is not essential. ..
  • the shearing mechanism portion may have, for example, only one of the first structural surface and the second structural surface, or may not have either the first structural surface or the second structural surface. That is, the shearing mechanism portion may be in a form in which a shearing force is applied to the gas and the liquid flowing between the rotating bodies and the casings that rotate relative to each other, and the specific configuration thereof is particularly questionable. do not have. It is preferable that the shearing mechanism portion has undulations such as concave and convex formed on the surfaces facing each other in at least one of the relative rotating portions of the rotating body and the casing.
  • the first structural surface and the second structural surface each have a plurality of circular recesses, but this is not essential.
  • first structural surface and the second structural surface have recesses, their size, depth, external shape, arrangement spacing, and the like are not particularly limited.
  • the outer shape of the concave portion may be, for example, a polygonal shape such as a triangle or a quadrangle. In particular, in the case of a hexagonal honeycomb structure, a plurality of recesses can be formed at high density.
  • the concave portion is not limited to an independent shape, and may have various shapes such as a groove shape, a grid shape, a radial shape, and the like that can form an uneven surface.
  • tubular member is provided as a member separate from the peripheral wall portion of the rotating body, but the tubular member may be provided integrally with the peripheral wall portion of the rotating body.
  • the facing portion is provided as a facing member by a member separate from the peripheral wall portion of the casing, but the facing portion may be provided integrally with the casing on the inner wall portion of the casing. good.
  • the second structural surface can be formed directly on the inner wall portion of the casing.
  • the inlet may have, for example, one or more inlets into which a liquid premixed with gas flows, one or more liquid inlets into which the liquid flows, and one or more inlets into which the gas flows. It may be in the form of having a gas inlet of the above.
  • the embodiment including the pump unit is illustrated, but this is not essential.
  • the function of the pump unit can be realized by, for example, a configuration in which a separate pump is provided in the upstream pipe of the inflow port or the downstream pipe of the outflow port. In this case, it is not necessary for the bubble-containing liquid manufacturing apparatus to include a pump unit.
  • the structure of the pump portion is not limited to the centrifugal pump, and other pump structures such as a vane pump and a cascade pump (centrifugal pump) may be adopted.
  • the outlet is formed so as to face one of the shaft end surface or the peripheral wall surface in the space between the end surface of the rotating body and the inner surface of the casing, but this is not essential. ..
  • the outlet may be formed, for example, in a form that is open facing both the shaft end surface and the peripheral wall surface in the space between the end surface of the rotating body and the inner surface of the casing, that is, straddling the peripheral wall and the end wall of the casing. ..
  • the outlet facing the shaft end surface in the space between the end surface of the rotating body and the inner surface of the casing and the outlet opening facing the peripheral wall surface. Both may be formed.
  • the outlet When the outlet is formed by opening in the inner surface of the casing extending along the direction intersecting the axial direction of the rotating body, the extending direction of this "inner surface" is in the axial direction of the rotating body.
  • Bubble-containing liquid manufacturing apparatus 10 ... Casing, 13, 14 ... Inflow port (13 ... First inflow port (liquid inflow port), 14 ... Second inflow port (gas inflow port)), 15, 216, 315 ... Outlet, 15A, 216A, 315A ... Outflow path, 20 ... Shear mechanism part, 21 ... Rotating body, 22 ... Motor (rotation imparting part), 23 ... Opposing member (opposing part), 30 ... Pump part, 32 ... Wings, C ... Gap (between the outer peripheral portion of the rotating body and the facing portion), S ... Space (between one end surface of the rotating body in the axial direction and the inner surface of the casing).

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Accessories For Mixers (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Le présent dispositif de production de liquide contenant des bulles d'air (1) comprend un boîtier (10) et une unité de mécanisme de cisaillement (20). Le boîtier (10) présente une forme cylindrique dans laquelle un premier orifice d'entrée (13) et un second orifice d'entrée (14) sont formés dans un côté d'extrémité (10A), et un orifice de sortie (15) est formé dans l'autre côté d'extrémité (10B). L'unité de mécanisme de cisaillement (20) applique une force de cisaillement au gaz et au liquide s'écoulant dans le boîtier (10) afin de générer un liquide contenant des bulles d'air. L'unité de mécanisme de cisaillement (20) comprend un corps rotatif (21), un moteur (22), et un élément opposé (23). Le corps rotatif (21) est disposé à l'intérieur du boîtier (10) de manière à pouvoir tourner autour de l'axe. Le moteur (22) applique une force de rotation axiale au corps rotatif (21). L'élément opposé (23) s'oppose au corps rotatif (21) à travers un espace prescrit. L'orifice de sortie (15) fait face à et s'ouvre dans un espace (S) formé entre : une surface d'extrémité de direction axiale du corps rotatif (21) ; et une surface interne du boîtier (10) faisant face à la surface d'extrémité.
PCT/JP2021/035868 2020-12-07 2021-09-29 Dispositif de production de liquide contenant des bulles d'air WO2022123867A1 (fr)

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JP2020202380A JP2022090168A (ja) 2020-12-07 2020-12-07 気泡含有液体製造装置
JP2020-202380 2020-12-07

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1157440A (ja) * 1997-08-12 1999-03-02 Yaskawa Electric Corp 気液混合装置
WO2002038263A1 (fr) * 2000-11-10 2002-05-16 Maelstrom Advanced Process Technologies Ltd Melangeur dynamique
JP2007307494A (ja) * 2006-05-19 2007-11-29 Yamazaki Co Ltd 気体混入水生成装置及び加湿装置
JP2011240265A (ja) * 2010-05-19 2011-12-01 Aisin Seiki Co Ltd 微細泡沫群生成装置および微細泡沫群入浴システム
JP2015188857A (ja) * 2014-03-28 2015-11-02 俊行 門脇 ナノバブル水素水・水素フォーム生成システム
JP2020168598A (ja) * 2019-04-02 2020-10-15 Ｋｙｂ株式会社 気泡含有液体製造装置及び気泡含有液体製造システム

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1157440A (ja) * 1997-08-12 1999-03-02 Yaskawa Electric Corp 気液混合装置
WO2002038263A1 (fr) * 2000-11-10 2002-05-16 Maelstrom Advanced Process Technologies Ltd Melangeur dynamique
JP2007307494A (ja) * 2006-05-19 2007-11-29 Yamazaki Co Ltd 気体混入水生成装置及び加湿装置
JP2011240265A (ja) * 2010-05-19 2011-12-01 Aisin Seiki Co Ltd 微細泡沫群生成装置および微細泡沫群入浴システム
JP2015188857A (ja) * 2014-03-28 2015-11-02 俊行 門脇 ナノバブル水素水・水素フォーム生成システム
JP2020168598A (ja) * 2019-04-02 2020-10-15 Ｋｙｂ株式会社 気泡含有液体製造装置及び気泡含有液体製造システム

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