WO2022249829A1 - 分離装置及び分離システム - Google Patents

分離装置及び分離システム Download PDF

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Publication number
WO2022249829A1
WO2022249829A1 PCT/JP2022/018662 JP2022018662W WO2022249829A1 WO 2022249829 A1 WO2022249829 A1 WO 2022249829A1 JP 2022018662 W JP2022018662 W JP 2022018662W WO 2022249829 A1 WO2022249829 A1 WO 2022249829A1
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WO
WIPO (PCT)
Prior art keywords
cylindrical portion
fluid
separation device
tubular portion
axial direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2022/018662
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English (en)
French (fr)
Japanese (ja)
Inventor
将大 鶴居
將有 鎌倉
嘉城 早崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Priority to US18/560,672 priority Critical patent/US20240375025A1/en
Priority to EP22811103.5A priority patent/EP4349490A4/en
Priority to JP2023523368A priority patent/JP7811699B2/ja
Publication of WO2022249829A1 publication Critical patent/WO2022249829A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/245—Discharge mechanisms for the sediments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B01D21/04—Settling tanks with single outlets for the separated liquid with moving scrapers
    • B01D21/06—Settling tanks with single outlets for the separated liquid with moving scrapers with rotating scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B01D21/08—Settling tanks with single outlets for the separated liquid provided with flocculating compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2405—Feed mechanisms for settling tanks
    • B01D21/2411—Feed mechanisms for settling tanks having a tangential inlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
    • B01D21/267—Separation of sediment aided by centrifugal force or centripetal force by using a cyclone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/12—Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C3/00—Apparatus in which the axial direction of the vortex flow following a screw-thread type line remains unchanged ; Devices in which one of the two discharge ducts returns centrally through the vortex chamber, a reverse-flow vortex being prevented by bulkheads in the central discharge duct
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
    • B04C2009/007—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks with internal rotors, e.g. impeller, ventilator, fan, blower, pump
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/005—Processes using a programmable logic controller [PLC]

Definitions

  • the present disclosure relates generally to separation devices and separation systems, and more particularly to a separation device for separating solids contained in a fluid from a fluid, and a separation system comprising the same.
  • Patent Document 1 chemical injection for injecting chemicals such as flocculants into raw sludge used for efficiently recovering solids when raw sludge is solid-liquid separated at sewage treatment plants or sewage treatment plants A centrifuge with the device is disclosed.
  • An object of the present disclosure is to provide a separation device and a separation system capable of improving the separation performance of separating solids contained in a fluid from the fluid.
  • a separation device includes a bottomed casing, a rotating body, and blades.
  • the casing includes an outer tubular portion and an inner tubular portion arranged inside the outer tubular portion.
  • the rotating body is arranged inside the inner cylindrical portion and is rotatable about a rotation axis along the axial direction of the inner cylindrical portion.
  • the blades are arranged between the inner cylindrical portion and the rotating body, and rotate together with the rotating body.
  • the inner tubular portion has an inner inlet that communicates the inside and the outside of the inner tubular portion, and an inner tubular portion that allows the inside and the outside of the inner tubular portion to communicate with each other. a discharge port for discharging contained solids between the inner cylinder portion and the outer cylinder portion.
  • the outer cylinder part communicates the inside and the outside of the outer cylinder part, and causes the fluid that has flowed out from the inside of the inner cylinder part and flowed into the inside of the outer cylinder part to flow out of the outer cylinder part.
  • a fluid outlet a solid discharge section that is separated from the fluid outlet in the axial direction and discharges the solid discharged from the discharge port of the inner cylindrical section to the outside of the outer cylindrical section.
  • a separation system includes the separation device and a drive device.
  • the driving device rotationally drives the rotating body.
  • the separation device and separation system of the present disclosure can improve the separation performance of separating solids contained in a fluid from the fluid.
  • FIG. 1 is a perspective view of a separation device according to an embodiment.
  • FIG. 2 is a see-through perspective view of the same separation device.
  • FIG. 3 is a partially broken side view of the separation device of the same.
  • FIG. 4 is a perspective view of a main part of the separating device same as the above.
  • FIG. 5 is a perspective view of another essential part of the separating device;
  • FIG. 6 is a cross-sectional view corresponding to a cross-section of the inner cylindrical portion taken along line VI--VI in FIG.
  • FIG. 7 is a cross-sectional view showing the same separation device, corresponding to the VII-VII line cross-section of FIG.
  • FIG. 8 is a schematic configuration diagram of a separation system including the same separation device.
  • FIG. 8 is a schematic configuration diagram of a separation system including the same separation device.
  • FIG. 9 is a diagram showing simulation results of the separation performance of the same separation apparatus.
  • 10 is a see-through perspective view of a separation device according to Modification 1.
  • FIG. 11 is a perspective view of a main part of the separating device same as the above.
  • FIG. 12 is a perspective view of another essential part of the separating device;
  • FIG. 1 is a perspective view of a separation device 1 according to an embodiment.
  • FIG. 2 is a see-through perspective view of the separation device 1.
  • FIG. FIG. 3 is a partially broken side view of the separation device 1.
  • FIG. FIG. 4 is a perspective view of the main part of the separation device 1.
  • FIG. FIG. 5 is a perspective view of another essential part of the separation device 1.
  • FIG. FIG. 6 is a cross-sectional view of the separating device 1 corresponding to a cross section taken along the line VI--VI in FIG.
  • FIG. 7 shows the separation device 1 and is a sectional view corresponding to the VII-VII line section of FIG.
  • FIG. 8 is a schematic configuration diagram of a separation system 10 including the separation device 1. As shown in FIG.
  • the separation device 1 is a device that separates solids contained in a fluid from the fluid.
  • the fluid is a liquid, more particularly water.
  • the solids to be separated by the separation device 1 are impurities (particles, etc.) contained in water.
  • the separation device 1 is provided, for example, in the middle of a tubular conduit (duct) for supplying water such as domestic water, and separates solids 90 (see FIG. 1) such as impurities contained in the fluid (water) from the fluid. To separate.
  • the separation device 1 may be used to separate impurities (solids 90) contained in gray water after it has been used as domestic water.
  • the separation device 1 includes a casing 2, a rotating body 3, and blades 4.
  • the casing 2 includes an outer tubular portion 5 and an inner tubular portion 6. As shown in FIGS. At least a portion (entirely in this embodiment) of the inner tubular portion 6 is arranged inside the outer tubular portion 5 .
  • the rotating body 3 is arranged inside the inner cylindrical portion 6 .
  • the rotating body 3 is rotatable around the rotation axis.
  • the axial direction of the rotating shaft is along the axial direction D1 of the inner cylindrical portion 6 (see FIG. 4).
  • the blades 4 are arranged between the inner cylindrical portion 6 and the rotor 3 . The blades 4 rotate together with the rotating body 3 .
  • the inner tubular portion 6 has an inner inlet 61 and an outlet 63 .
  • the inner inlet 61 connects the inner space of the inner tubular portion 6 and the outer space of the inner tubular portion 6 .
  • the inner inlet port 61 allows communication between the inside and the outside of the inner cylindrical portion 6 .
  • the inner inlet 61 is a hole for allowing fluid (here, water) to flow from the outside to the inside of the inner tubular portion 6 .
  • the discharge port 63 connects the inner space of the inner tubular portion 6 and the outer space of the inner tubular portion 6 .
  • the discharge port 63 allows communication between the inside and the outside of the inner tubular portion 6 .
  • the discharge port 63 removes solids 90 (impurities) contained in the fluid (water) that has flowed into the inner cylindrical portion 6 into the space between the inner cylindrical portion 6 and the outer cylindrical portion 5 (recovery space 26; FIG. 1, Figure 3) is a hole for discharging.
  • the outer cylinder part 5 has a fluid outlet 52 .
  • the fluid outlet 52 connects the inner space of the outer cylinder portion 5 and the outer space of the outer cylinder portion 5 .
  • the fluid outflow port 52 allows communication between the inside and the outside of the outer cylindrical portion 5 .
  • the fluid outflow port 52 allows the inside and outside of the casing 2 to communicate with each other.
  • the fluid outflow port 52 is a hole for allowing the fluid (water) that has flowed out from the inside of the inner cylinder portion 6 and flowed into the inside of the outer cylinder portion 5 to flow out of the outer cylinder portion 5 .
  • the outer cylinder part 5 further includes a fluid inlet 51 .
  • the fluid inlet 51 connects the inner space of the outer cylinder portion 5 and the outer space of the outer cylinder portion 5 .
  • the fluid inlet 51 allows communication between the inside and the outside of the outer cylindrical portion 5 .
  • the fluid inlet 51 allows the inside and outside of the casing 2 to communicate with each other.
  • the fluid inlet 51 is a hole for allowing fluid to flow from the outside to the inside of the outer cylindrical portion 5 .
  • the inner tubular portion 6 is arranged inside the outer tubular portion 5 such that the inner inlet 61 is connected to the fluid inlet 51 of the outer tubular portion 5 . Therefore, the fluid that has flowed into the outer tubular portion 5 from the fluid inlet 51 flows into the inner tubular portion 6 through the inner inlet 61 .
  • the separation device 1 generates a fluid flow (water flow) that swirls inside the inner cylindrical portion 6 when the rotating body 3 rotates. As a result, the separation device 1 generates a swirling fluid flow within the casing 2 when the rotating body 3 rotates.
  • the separation device 1 can allow the fluid (water) that has flowed into the casing 2 from the upstream side to flow downstream while spirally rotating around the rotating body 3 .
  • the "upstream side” here means the upstream side (primary side) when viewed in the direction of fluid flow.
  • downstream side means the downstream side (secondary side) when viewed in the direction of fluid flow.
  • the separation device 1 is used in a state in which the fluid outlet 52 of the outer cylindrical portion 5 is positioned above the fluid inlet 51 in the vertical direction. In this case, in the separation device 1 , the fluid that has flowed into the casing 2 from the fluid inlet 51 can be moved upward while spirally rotating around the rotating body 3 and flowed to the fluid outlet 52 .
  • the outer cylinder part 5 further includes a solid discharge part 53.
  • the solid discharge portion 53 is a hole for discharging the solid 90 discharged from the discharge port 63 of the inner cylinder portion 6 to the outside of the outer cylinder portion 5 .
  • the solid discharge portion 53 connects the inner space of the outer cylinder portion 5 and the outer space of the outer cylinder portion 5 .
  • the solid discharge portion 53 allows communication between the inside and the outside of the outer cylindrical portion 5 .
  • the solid discharging part 53 allows the inside and outside of the casing 2 to communicate with each other.
  • the solid discharge portion 53 is separated from the fluid outlet 52 in the axial direction D2 of the outer cylinder portion 5 .
  • the separation device 1 In the separation device 1 , at least part of the solids 90 (impurities) contained in the fluid (water) that has flowed into the inner cylindrical portion 6 from the fluid inlet 51 through the inner inlet 61 flows from the outlet 63 to the inside. It is discharged between the cylindrical portion 6 and the outer cylindrical portion 5 (recovery space 26). In the separation device 1, the solids 90 discharged between the inner cylinder part 6 and the outer cylinder part 5 (recovery space 26) are discharged from the solids discharge part 53 to the outside of the outer cylinder part 5 (outside of the casing 2). can be discharged.
  • centrifugal force can be applied to the solids 90 contained in the fluid inside the inner tubular portion 6.
  • centrifugal force can be applied to the solids 90 contained in the fluid inside the inner tubular portion 6.
  • the separation system 10 includes a separation device 1 and a drive device 11, as shown in FIG.
  • the driving device 11 drives the rotor 3 to rotate.
  • the driving device 11 rotates the rotating body 3 around the rotating shaft.
  • the driving device 11 includes, for example, a motor.
  • the separation device 1 includes the casing 2 , the rotor 3 , and the blades 4 .
  • the casing 2 includes an outer tubular portion 5 and an inner tubular portion 6 .
  • the inner tubular portion 6 is entirely disposed within the outer tubular portion 5 .
  • the separation device 1 further includes an inflow cylinder portion 21, an outflow cylinder portion 22, a discharge cylinder portion 23, and an opening/closing portion 7.
  • the material of the outer cylinder part 5 is, for example, metal.
  • the material of the outer tube portion 5 is not limited to this, and may be resin (for example, polyethylene resin).
  • the outer cylindrical portion 5 may include a metal portion made of metal and a resin portion made of resin.
  • a material used as a material for water pipes is appropriately used.
  • the outer cylindrical portion 5 has a circular inner peripheral shape.
  • the phrase "having a circular inner circumference” means that the shape along the inner circumference of the outer cylindrical portion 5 is circular.
  • the shape along the outer circumference of the outer cylindrical portion 5 is circular.
  • the outer cylinder part 5 has a first end 501 and a second end 502 in the axial direction D2.
  • the casing 2 includes a first outer bottom portion 58 that closes the opening of the first end 501 of the outer cylinder portion 5 and a second outer bottom portion 58 that closes the opening of the second end 502 of the outer cylinder portion 5 . and an outer bottom 59 .
  • the outer cylindrical portion 5 , the first outer bottom portion 58 and the second outer bottom portion 59 form a bottomed cylindrical member with both ends closed.
  • the outer shell of the casing 2 is composed of the outer cylindrical portion 5 , the first outer bottom portion 58 and the second outer bottom portion 59 .
  • the separation device 1 is used with the axial direction D2 of the outer cylindrical portion 5 along the vertical direction, the first end 501 facing downward, and the second end 502 facing upward.
  • the vertical upper side may be referred to as “upper”
  • the vertical lower side may be referred to as “lower”.
  • the outer cylindrical portion 5 integrally has a first cylindrical portion 503, an enlarged diameter portion 504, and a second cylindrical portion 505.
  • the first cylindrical portion 503 , the enlarged diameter portion 504 , and the second cylindrical portion 505 are arranged in this order from the first end 501 toward the second end 502 in the axial direction D ⁇ b>2 of the outer cylindrical portion 5 . That is, the first cylindrical portion 503, the enlarged diameter portion 504, and the second cylindrical portion 505 are arranged in this order from bottom to top.
  • the inner and outer diameters of the first cylindrical portion 503 are constant over the entire length of the first cylindrical portion 503 in the axial direction D2 of the outer cylindrical portion 5 .
  • the inner and outer diameters of the second cylindrical portion 505 are constant over the entire length of the second cylindrical portion 505 in the axial direction D2 of the outer cylindrical portion 5 .
  • the inner diameter of the second cylindrical portion 505 is greater than the inner diameter of the first cylindrical portion 503
  • the outer diameter of the second cylindrical portion 505 is greater than the outer diameter of the first cylindrical portion 503 .
  • the inner diameter of the second cylindrical portion 505 is, for example, about 20 cm. However, the inner diameter of the second cylindrical portion 505 is not limited to this, and the inner diameter of the second cylindrical portion 505 is appropriately set according to the type of fluid, the type of the solid 90 to be separated, the desired separation performance, and the like.
  • the enlarged diameter portion 504 is located between the first cylindrical portion 503 and the second cylindrical portion 505 and connects the first cylindrical portion 503 and the second cylindrical portion 505 .
  • the opening area gradually increases from the end portion on the first end 501 side toward the end portion on the second end 502 side in the axial direction D ⁇ b>2 of the outer cylinder portion 5 .
  • the opening at the lower end of the first cylindrical portion 503 is closed by the first outer bottom portion 58 .
  • the upper end of the first cylindrical portion 503 is connected to the lower end of the enlarged diameter portion 504 .
  • the upper end of the enlarged diameter portion 504 is connected to the lower end of the second cylindrical portion 505 .
  • the opening at the upper end of the second cylindrical portion 505 is closed by the second outer bottom portion 59 .
  • the length in the axial direction D1 of the portion where the enlarged diameter portion 504 and the second cylindrical portion 505 are combined is about 50 cm.
  • the length of the purifying section is not limited to this, and the length of the purifying section is appropriately set according to the type of fluid, the type of solid 90 to be separated, desired separation performance, and the like.
  • the fluid inlet 51 communicates the inside and the outside of the outer cylinder part 5 between the first end 501 and the second end 502 of the outer cylinder part 5 .
  • a fluid inlet 51 is formed in the first cylindrical portion 503 .
  • the fluid inlet 51 is formed near the first outer bottom portion 58 along one direction that intersects with the axial direction D2 of the outer cylindrical portion 5 . In other words, the fluid inlet 51 is open to the side of the outer cylindrical portion 5 .
  • the fluid outlet port 52 is separated from the fluid inlet port 51 in the axial direction D ⁇ b>2 of the outer cylinder portion 5 , and the outer cylinder portion 5 is positioned between the first end 501 and the second end 502 of the outer cylinder portion 5 .
  • the inside and outside of the part 5 are communicated.
  • a fluid outlet 52 is formed in the second cylindrical portion 505 .
  • the fluid outlet 52 is formed near the second outer bottom portion 59 along one direction intersecting the axial direction D2 of the outer cylinder portion 5 . In other words, the fluid outflow port 52 is open to the side of the outer tube portion 5 .
  • the inflow tubular portion 21 is connected to the periphery of the fluid inflow port 51 on the outer peripheral surface 57 of the outer tubular portion 5, for example.
  • the inflow tubular portion 21 is a member for allowing the fluid to flow into the outer tubular portion 5 . That is, the inflow tubular portion 21 guides the fluid from the outside to the inside of the casing 2 .
  • the inflow tubular portion 21 has an internal space communicating with the fluid inflow port 51 and protrudes from the outer peripheral surface 57 of the outer tubular portion 5 .
  • the inflow cylinder part 21 is square cylinder shape.
  • the opening on the side opposite to the fluid inflow port 51 side is rectangular with respect to the part protruding from the outer peripheral surface 57 of the outer cylinder part 5 .
  • the inflow tubular portion 21 protrudes in a direction along one tangential line of the inner peripheral surface 56 of the outer tubular portion 5 when viewed from the axial direction D2 of the outer tubular portion 5 (see FIG. 6).
  • the outflow cylinder part 22 is connected to the periphery of the fluid outflow port 52 on the outer peripheral surface 57 of the outer cylinder part 5, for example.
  • the outflow cylinder part 22 is a member for supplying the fluid from which the solids 90 have been separated to the outside of the outer cylinder part 5 .
  • the outflow cylinder portion 22 has an internal space communicating with the fluid outflow port 52 and protrudes from the outer peripheral surface 57 of the outer cylinder portion 5 .
  • the outflow cylinder part 22 is rectangular cylinder-shaped. In the outflow tubular portion 22 , the opening on the side opposite to the fluid outflow port 52 is rectangular with respect to the portion protruding from the outer peripheral surface 57 of the outer tubular portion 5 .
  • the outflow tube portion 22 protrudes in a direction along one tangential line of the inner peripheral surface 56 of the outer tube portion 5 when viewed from the axial direction D2 of the outer tube portion 5 (see FIG. 7). In one specific example, the outflow tubular portion 22 protrudes in a direction parallel to the protruding direction of the inflow tubular portion 21 when viewed from the axial direction D1.
  • the material of the inner cylindrical portion 6 is, for example, metal. However, the material of the inner cylindrical portion 6 is not limited to this, and may be resin (for example, polyethylene resin). In addition, the inner cylindrical portion 6 may include a metal portion made of metal and a resin portion made of resin. The material of the inner tubular portion 6 may be the same as or different from the material of the outer tubular portion 5 . As the material of the inner cylindrical portion 6, for example, a material used as a material for water pipes is appropriately used.
  • the inner cylindrical portion 6 has a circular inner peripheral shape. "Having a circular inner circumference” means that the shape along the inner circumference of the inner cylindrical portion 6 is circular. The shape in the direction along the outer circumference of the inner cylindrical portion 6 is circular.
  • the axial direction D1 of the inner tubular portion 6 is along the axial direction D2 of the outer tubular portion 5 . That is, the inner tubular portion 6 is arranged inside the outer tubular portion 5 so that the axial direction D1 of the inner tubular portion 6 is aligned with the axial direction D2 of the outer tubular portion 5 . In one specific example, the axial direction D1 of the inner tubular portion 6 and the axial direction D2 of the outer tubular portion 5 are parallel to each other. More specifically, the inner tubular portion 6 is arranged coaxially with the outer tubular portion 5 . “Coaxially arranged with the outer cylinder part 5 ” means that the inner cylinder part 6 is arranged so that the axis of the outer cylinder part 5 is aligned with the axis of the inner cylinder part 6 .
  • the inner cylindrical portion 6 has a first end 601 and a second end 602 in the axial direction D1.
  • the inner diameter and the outer diameter of the inner tubular portion 6 are constant over the entire length of the inner tubular portion 6 in the axial direction D1.
  • the inner cylinder part 6 is cylindrical.
  • the outer diameter of the inner cylindrical portion 6 is approximately equal to the inner diameter of the first cylindrical portion 503 of the outer cylindrical portion 5 .
  • the outer diameter of the inner cylindrical portion 6 is smaller than the inner diameter of the second cylindrical portion 505 of the outer cylindrical portion 5 .
  • the length of the inner cylindrical portion 6 is longer than the length of the rotating body 3 in the axial direction D1 of the inner cylindrical portion 6 .
  • the length of the inner tubular portion 6 is shorter than the length of the outer tubular portion 5 in the axial direction D1 of the inner tubular portion 6 .
  • the casing 2 further includes an inner bottom portion 68 closing the opening of the first end 601 of the inner cylinder portion 6 .
  • the inner cylindrical portion 6 and the inner bottom portion 68 form a bottomed cylindrical member with one end open.
  • the opening at the second end 602 of the inner tubular portion 6 constitutes a discharge port 63 .
  • the discharge port 63 penetrates the inner cylindrical portion 6 in the axial direction D1.
  • the inner tubular portion 6 is provided with a fluid circulation port 62 .
  • the fluid flow port 62 connects the inner space of the inner tubular portion 6 and the outer space of the inner tubular portion 6 .
  • the fluid communication port 62 communicates the inside and the outside of the inner tubular portion 6 .
  • the opening of the second end 602 of the inner cylindrical portion 6 constitutes the fluid flow port 62 . That is, in the present embodiment, the opening of the second end 602 of the inner cylindrical portion 6 serves both as the fluid flow port 62 and as the discharge port 63 .
  • the inner inlet 61 communicates the inside and the outside of the inner tubular portion 6 between the first end 601 and the second end 602 of the inner tubular portion 6 .
  • the inner inlet port 61 is separated from the outlet port 63 and the fluid flow port 62 in the axial direction D1 of the inner tubular portion 6 .
  • the inner inlet 61 is formed in the inner tubular portion 6 at a position near the inner bottom portion 68 along one direction intersecting the axial direction D1 of the inner tubular portion 6 . In other words, the inner inlet 61 is open to the side of the inner cylindrical portion 6 .
  • the rotating body 3 is arranged inside the inner cylindrical portion 6 .
  • the rotor 3 is made of polycarbonate resin, for example.
  • the rotor 3 is rotatable about a rotation axis along the axial direction D1 of the inner cylindrical portion 6 .
  • the rotating body 3 is arranged coaxially with the inner cylindrical portion 6 inside the inner cylindrical portion 6 . “Coaxially arranged with the inner cylindrical portion 6 ” means that the rotating body 3 is arranged so that the rotational axis of the rotating body 3 is aligned with the central axis of the inner cylindrical portion 6 .
  • the rotating body 3 is, for example, a columnar shape with a constant diameter in the axial direction D1 of the inner cylindrical portion 6 .
  • the rotor 3 has a first end 31 on the side of the inner inlet 61 and a second end 32 on the side of the fluid flow port 62 .
  • the length of the rotor 3 is shorter than the length of the inner cylindrical portion 6 in the direction along the rotation axis of the rotor 3 .
  • the rotating body 3 is arranged at a position overlapping the central portion of the inner tubular portion 6 in the axial direction D1 of the inner tubular portion 6 .
  • a shaft 30 is connected to the rotor 3 .
  • the shaft 30 is arranged coaxially with the rotating body 3 .
  • the shaft 30 is connected to the motor of the drive 11 in the separating system 10 .
  • the motor is for example arranged on the outside of the casing 2 , more particularly on the outside face of the second outer bottom 59 . Note that illustration of the motor is omitted in each figure.
  • the blades 4 are arranged between the inner cylindrical portion 6 and the rotating body 3 and rotate together with the rotating body 3 .
  • a plurality of blades 4 (here, six blades) are arranged between the inner cylindrical portion 6 and the rotating body 3 . That is, the separation device 1 has a plurality of vanes 4 .
  • the plurality of blades 4 are connected to the rotating body 3 and separated from the inner peripheral surface 66 of the inner cylindrical portion 6 .
  • a plurality of blades 4 rotate together with the rotor 3 .
  • a plurality of blades 4 are provided on the rotating body 3 over the entire length of the rotating body 3 in the direction along the axial direction D1 of the inner cylindrical portion 6 . That is, the plurality of blades 4 are provided from the first end 31 to the second end 32 of the rotor 3 .
  • the material of the plurality of blades 4 is polycarbonate resin, for example.
  • the material of the rotating body 3 and the material of the plurality of blades 4 are the same, but are not limited to this and may be different.
  • the plurality of blades 4 may be formed integrally with the rotating body 3 , or may be formed as separate members from the rotating body 3 and fixed to the rotating body 3 to be connected to the rotating body 3 .
  • each of the plurality of blades 4 is arranged such that a gap is formed between each blade 4 and the inner cylinder portion 6 when viewed from the axial direction D1 of the inner cylinder portion 6 .
  • the distance between the projecting tip of each of the plurality of blades 4 and the outer peripheral surface 37 of the rotating body 3 is less than the distance of
  • Each of the plurality of blades 4 is arranged parallel to the rotation axis of the rotating body 3 in the space (flow path) between the outer peripheral surface 37 of the rotating body 3 and the inner peripheral surface 66 of the inner cylindrical portion 6 .
  • Each of the plurality of blades 4 has a flat plate shape.
  • Each of the plurality of blades 4 has a rectangular shape elongated in the direction along the rotation axis of the rotating body 3 when viewed from its thickness direction.
  • Each of the plurality of blades 4 forms an angle of 0 degrees with one radial direction of the rotating body 3 when viewed from the inner bottom portion 68 side in the direction along the axial direction D1 of the inner cylindrical portion 6 . That is, the plurality of blades 4 radially extend from the rotor 3 .
  • a plurality of blades 4 are arranged at equal angular intervals in the direction along the outer periphery of the rotating body 3 .
  • the term “equidangular interval” as used herein is not limited to the case where the angular interval is exactly the same. may be an angular interval of
  • the length of each of the plurality of blades 4 in the axial direction D1 of the inner cylindrical portion 6 is the same as the length of the rotor 3.
  • the length of each of the plurality of blades 4 is not limited to being the same as the length of the rotating body 3, and may be longer or shorter than the rotating body 3.
  • each of the plurality of blades 4 is shorter than the length of the inner cylinder portion 6 in the axial direction D1 of the inner cylinder portion 6 .
  • Each of the plurality of blades 4 is entirely arranged inside the inner cylindrical portion 6 in the axial direction D ⁇ b>1 of the inner cylindrical portion 6 .
  • the rotating body 3 and the plurality of blades 4 are positioned so as not to overlap the inner inlet 61 in the direction perpendicular to the axial direction D1 of the inner tubular portion 6 .
  • the inner tubular portion 6 is arranged inside the outer tubular portion 5 so that the lower surface of the inner bottom portion 68 contacts the upper surface of the first outer bottom portion 58, for example.
  • the lower surface of the inner bottom portion 68 being in contact with the upper surface of the first outer bottom portion 58 may mean that the lower surface of the inner bottom portion 68 is in surface contact with the upper surface of the first outer bottom portion 58. It may mean partially contacting the top surface of the first outer bottom 58 .
  • the inner inlet 61 of the inner tubular portion 6 communicates with the fluid inlet 51 of the outer tubular portion 5 while the inner tubular portion 6 is arranged inside the outer tubular portion 5 .
  • the second end 602 (upper end) of the inner cylinder portion 6 that is, the fluid flow opening 62 and the discharge port 63 are arranged in the second cylindrical portion of the outer cylinder portion 5 in a state where the inner cylinder portion 6 is arranged inside the outer cylinder portion 5 . It is in the middle position of the portion 505 in the axial direction D1. Therefore, in the second cylindrical portion 505 of the outer cylindrical portion 5, there is no inner cylindrical portion 6 inside the upper half in the axial direction D1. Therefore, the outer tubular portion 5 has the space 25 closer to the fluid outlet 52 than the second end 602 of the inner tubular portion 6 in the axial direction D2 of the outer tubular portion 5 .
  • the fluid outlet 52 is located at a position overlapping the space 25 in the direction perpendicular to the axial direction D ⁇ b>2 of the outer tube portion 5 . Further, in the separation device 1 , the fluid outlet 52 is positioned so as not to overlap the inner tubular portion 6 in the direction orthogonal to the axial direction D ⁇ b>2 of the outer tubular portion 5 . In other words, there is no inner cylinder part 6 in the projected area of the fluid outlet 52 when the outer cylinder part 5 is viewed from the side.
  • the inner peripheral surface of the first cylindrical portion 503 of the outer cylindrical portion 5 contacts the outer peripheral surface 67 of the inner cylindrical portion 6 without any gap.
  • a gap (recovery space 26 ) is formed between the inner cylinder part 6 and the outer cylinder part 5 in a state where the inner cylinder part 6 is arranged inside the outer cylinder part 5 .
  • the recovery space 26 is defined by the outer peripheral surface 67 of the inner tubular portion 6, the inner peripheral surface of the enlarged diameter portion 504 of the outer tubular portion 5, and the inner surface of the second cylindrical portion 505 in the direction perpendicular to the axial direction D2 of the outer tubular portion 5. It is the space sandwiched between the peripheral surface and .
  • the solid discharge portion 53 is provided in the enlarged diameter portion 504 of the outer cylinder portion 5 .
  • the solid discharge portion 53 connects the inner space of the outer cylinder portion 5 and the outer space of the outer cylinder portion 5 via the inner space of the solid discharge portion 53 .
  • the solid discharge part 53 connects the recovery space 26 in the inner space of the outer cylinder part 5 and the outer space of the outer cylinder part 5 .
  • the solid discharge part 53 is open downward in the vertical direction.
  • the distance between the solid discharge portion 53 and the fluid inlet 51 is shorter than the distance between the solid discharge portion 53 and the fluid outlet 52 in the direction along the axial direction D2 of the outer cylinder portion 5 .
  • the distance between the solid discharging portion 53 and the inflow cylindrical portion 21 is shorter than the distance between the solid discharging portion 53 and the fluid outlet 52. .
  • the discharge cylinder part 23 is connected to the peripheral edge of the solid discharge part 53 on the outer peripheral surface 57 of the outer cylinder part 5, for example.
  • the discharge cylinder part 23 is a member for discharging the solid 90 discharged into the recovery space 26 to the outside of the outer cylinder part 5 .
  • the discharge cylinder part 23 has an internal space communicating with the solid discharge part 53 and protrudes from the outer peripheral surface 57 of the outer cylinder part 5 .
  • the discharge cylinder part 23 is cylindrical.
  • the opening on the side opposite to the fluid outflow port 52 side is circular in relation to the part protruding from the outer peripheral surface 57 of the outer cylinder part 5 .
  • the discharge tube portion 23 protrudes in a direction along the axial direction D2 of the outer tube portion 5 .
  • the discharge tube portion 23 protrudes downward from the solid discharge portion 53 .
  • the opening/closing part 7 opens and closes the discharge tube part 23 .
  • the opening/closing part 7 opens and closes the solid discharging part 53 .
  • the opening/closing part 7 is, for example, a valve provided in the discharge cylinder part 23 .
  • the valve has, for example, a closed state in which the fluid in the outer cylinder portion 5 is prevented from flowing out of the outer cylinder portion 5 through the solid discharge portion 53 and the discharge cylinder portion 23, and a closed state in which the fluid in the outer cylinder portion 5 is prevented from flowing out. and an open state that allows the liquid to flow out of the outer tube portion 5 through the solid discharge portion 53 and the discharge tube portion 23 .
  • the valve may variably adjust the flow rate of fluid through the discharge tube 23 in the open state.
  • the valve is, for example, a manually operated valve that allows a user to manually switch between a closed state and an open state. may be
  • the separation system 10 includes a separation device 1 and a driving device 11 that drives the rotor 3 of the separation device 1 to rotate.
  • the driving device 11 includes, for example, a motor that rotates the rotating body.
  • the driving device 11 may have the rotating shaft of the motor directly or indirectly connected to the rotating body 3, or the rotation of the rotating shaft of the motor may be transmitted to the rotating body 3 via a pulley and a rotating belt.
  • the motor may be arranged inside the casing 2 or outside the casing 2 .
  • the rotational speed of the rotating body 3 rotationally driven by the driving device 11 is, for example, 250 rpm to 1000 rpm.
  • the separation system 10 further comprises a control device 12 that controls the drive device 11 .
  • Controller 12 includes a computer system.
  • a computer system is mainly composed of a processor and a memory as hardware.
  • the function of the control device 12 is realized by the processor executing a program recorded in the memory of the computer system.
  • the program may be recorded in advance in the memory of the computer system, may be provided through an electric communication line, or may be recorded in a non-temporary recording medium such as a computer system-readable memory card, optical disk, or hard disk drive. may be provided.
  • a processor in a computer system is made up of one or more electronic circuits, including semiconductor integrated circuits (ICs) or large scale integrated circuits (LSIs).
  • Integrated circuits such as ICs or LSIs are called differently depending on the degree of integration, and include integrated circuits called system LSI, VLSI (Very Large Scale Integration), or ULSI (Ultra Large Scale Integration).
  • FPGAs Field-Programmable Gate Arrays
  • a plurality of electronic circuits may be integrated into one chip, or may be distributed over a plurality of chips.
  • a plurality of chips may be integrated in one device, or may be distributed in a plurality of devices.
  • a computer system includes a microcontroller having one or more processors and one or more memories. Accordingly, the microcontroller also consists of one or more electronic circuits including semiconductor integrated circuits or large scale integrated circuits.
  • the rotation direction R1 of the rotor 3 is, for example, the direction of rotation of the rotor 3 from the second outer bottom portion 59 side in the axial direction D2 of the outer cylindrical portion 5. 3 is in the counterclockwise direction (see FIGS. 6 and 7).
  • the separating system 10 rotates the rotating body 3 by the driving device 11 .
  • the separation device 1 is used, for example, with the opening/closing part 7 closed.
  • the rotation of the rotating body 3 having the blades 4 makes it possible to apply force in the direction of rotation around the shaft 30 to the fluid in the inner space of the inner cylindrical portion 6.
  • the rotation of the rotating body 3 causes the plurality of blades 4 to rotate together with the rotating body 3 , and the velocity vector of the fluid flowing in the inner space of the inner cylindrical portion 6 changes in the direction parallel to the shaft 30 . It will have a velocity component and a rotational velocity component about the shaft 30 .
  • a swirling flow of fluid can be generated in the inner cylindrical portion 6 by rotating the rotating body 3 and each blade 4 .
  • a swirling fluid flow is a flow that rotates in a three-dimensional spiral.
  • the rotation of the rotating body 3 and the blades 4 generates a spirally rotating fluid flow that rises from the inner inlet 61 toward the fluid circulation port 62 . Therefore, in the separation device 1 , the rotation of the rotor 3 and the blades 4 generates a spirally rotating fluid flow that ascends from the fluid inlet 51 toward the fluid outlet 52 of the outer cylinder 5 .
  • the fluid flows from the outside of the casing 2 toward the inner space of the casing 2 through the inflow tubular portion 21 .
  • the fluid flows out from the inner space of the casing 2 toward the outside of the casing 2 through the outflow tubular portion 22 .
  • the solid 90 contained in the fluid that has flowed into the inner tubular portion 6 moves from the shaft 30 of the rotating body 3 into the inner tubular portion 6 as it spirally rotates in the inner space of the inner tubular portion 6 .
  • a centrifugal force directed toward the peripheral surface 66 is received.
  • the solid body 90 subjected to the centrifugal force tends to move toward the inner peripheral surface 66 of the inner tubular portion 6 and spirally rotate along the inner peripheral surface 66 in the vicinity of the inner peripheral surface 66 of the inner tubular portion 6 .
  • the solid 90 in the fluid moves from the inner space of the inner tubular portion 6 to the outside of the inner tubular portion 6 at a position near the inner peripheral surface 66 of the inner tubular portion 6 in the direction orthogonal to the axial direction D2. It is discharged into the space (that is, space 25) through the discharge port 63 (fluid flow port 62).
  • the solid 90 discharged to the space 25 through the discharge port 63 is moved to the recovery space 26 between the outer peripheral surface 67 of the inner cylinder portion 6 and the inner peripheral surface 56 of the outer cylinder portion 5 by gravity acting on the solid 90 . and sink.
  • the number of revolutions of the rotating body 3 is such that the solid 90 to be separated among the solids 90 discharged from the inner space of the inner cylindrical portion 6 through the discharge port 63 into the space 25 is equal to the amount of the fluid in the outer cylindrical portion 5 . It is appropriately set to a value that allows it to sink into the recovery space 26 against the rising force of the flow.
  • the solid 90 to be separated by the separation device 1 is not particularly limited, but is, for example, particles having a particle diameter of about 10 ⁇ m.
  • the solids 90 that have settled into the recovery space 26 pass through the solids discharge portion 53 and accumulate in the inner space of the discharge cylinder portion 23 .
  • the solids 90 accumulated in the discharge cylinder part 23 are discharged to the outside of the casing 2 through the discharge cylinder part 23 of the outer cylinder part 5 by opening the opening/closing part 7 .
  • an administrator who manages the separation system 10 may operate the opening/closing unit 7 to discharge the solid 90 during regular maintenance of the separation system 10 or the like.
  • the arrow A3 schematically shows the flow of the fluid containing the solids 90 from the inner space of the casing 2 toward the outside of the casing 2 through the discharge cylinder portion 23 .
  • part of the solids 90 in the fluid (water) that has flowed into the casing 2 from the fluid inlet 51 of the outer cylindrical portion 5 is discharged through the discharge port 63 and the solid discharge portion 53, and the solids 90 are separated.
  • a portion of the (removed) fluid (cleaned water) flows out from the fluid outlet 52 of the outer tube portion 5 .
  • FIG. 9 is a graph showing simulation results of separation characteristics when the number of revolutions of the rotor 3 is changed in the separation device 1 according to the embodiment.
  • the inner diameter of the second cylindrical portion 505 of the outer cylinder portion 5 is 20 cm
  • the length in the axial direction D1 of the purification portion (the portion where the enlarged diameter portion 504 and the second cylindrical portion 505 are combined) of the outer cylinder portion 5 is 50 cm
  • the flow rate of the fluid flowing into the inner space of the casing 2 from the fluid inlet 51 is 5 L/min.
  • water is assumed as the fluid.
  • the horizontal axis of FIG. 9 is the particle size [ ⁇ m] of the solid 90 to be separated.
  • the vertical axis of FIG. 9 is the separation efficiency [%]. Separation efficiency here means the dust collection efficiency (ratio of the amount of collected solids 90 to the amount of solids 90 contained in the fluid flowing into the fluid inlet 51).
  • the data plotted with triangles indicates the separation characteristics when the rotational speed of the rotor 3 is 1000 rpm.
  • the data plotted with diamonds indicates the separation characteristics when the rotational speed of the rotor 3 is 750 rpm.
  • the data plotted in squares indicates the separation characteristics when the rotational speed of the rotor 3 is 500 rpm.
  • the data plotted with circles indicates the separation characteristics when the rotational speed of the rotor 3 is 250 rpm.
  • the separation device 1 can separate solids 90 (particles) having a particle size of 10 ⁇ m from water with a separation efficiency of nearly 100% when the rotational speed of the rotor 3 is in the range of 250 rpm to 1000 rpm. .
  • the separation efficiency tends to increase as the rotation speed of the rotor 3 increases.
  • the rotation speed of the rotating body 3 is set so as to separate the solid 90 having a specified particle size or more.
  • the solid 90 with a specified particle size for example, particles with a particle size of 10 ⁇ m are assumed.
  • the solids 90 that remain in the fluid without being separated by the separation device 1 are, for example, fine particles having a particle diameter smaller than that of the solids 90 that are supposed to be separated by the separation device 1 (in other words, microparticles with a mass less than the mass of microparticles assumed to be
  • FIG. 10 is a see-through perspective view of a separation device 1A according to Modification 1.
  • FIG. 11 is a perspective view of a main part of the separation device 1A.
  • FIG. 12 is a perspective view of another essential part of the separation device 1A.
  • the separation device 1A of this modified example is different from the separation device 1 of the embodiment in that the discharge port 63 is formed separately from the fluid flow port 62 in the inner cylindrical portion 6. do.
  • the separation device 1A of this modified example is different from the separation device 1 of the embodiment in that a prevention unit 8 is further provided.
  • the same components as those of the separation device 1 according to the embodiment are denoted by the same reference numerals, and the description thereof is appropriately omitted.
  • the discharge port 63 is separated from the fluid flow port 62 in the axial direction D1 of the inner cylindrical portion 6.
  • the discharge port 63 allows communication between the inside and the outside of the inner tubular portion 6 between the first end 601 and the second end 602 of the inner tubular portion 6 .
  • the discharge port 63 is a slit extending along the axial direction D1 of the inner cylindrical portion 6 .
  • two slit-shaped discharge ports 63 are formed in the inner cylindrical portion 6 . 10 and 12, the discharge port 63 is illustrated as a wide opening for convenience of explanation.
  • the fluid circulation port 62 is configured by an opening of the second end 602 of the inner cylindrical portion 6, as in the separation device 1 of the embodiment.
  • the separation device 1A of this modified example when the rotating body 3 is rotated, the fluid flows into the inner cylindrical portion 6 . Then, when the solid 90 contained in the fluid that has flowed into the inner cylindrical portion 6 spirally rotates in the inner space of the inner cylindrical portion 6 , the solid 90 moves from the rotation center axis 30 of the rotating body 3 to the inner periphery of the inner cylindrical portion 6 . A centrifugal force directed toward the surface 66 is received. The solid body 90 subjected to the centrifugal force tends to move toward the inner peripheral surface 66 of the inner tubular portion 6 and spirally rotate along the inner peripheral surface 66 in the vicinity of the inner peripheral surface 66 of the inner tubular portion 6 . In the separation device 1A, part of the solids 90 in the fluid pass through the discharge port 63 on the way through the inner space of the inner cylinder part 6 and exit the inner cylinder part 6 and the outer cylinder part 5. is discharged into the recovery space 26 between.
  • part of the solids 90 in the fluid that has flowed into the inner cylindrical portion 6 from the inner inlet 61 of the inner cylindrical portion 6 is discharged from the inner cylindrical portion 6 through the outlet 63, and the solids 90 are separated ( A portion of the removed fluid (cleaned water) flows out from the fluid flow opening 62 of the inner tubular portion 6 into the inner space of the outer tubular portion 5 .
  • the prevention part 8 prevents the solid 90 discharged between the inner cylinder part 6 and the outer cylinder part 5 (recovery space 26 ) from the discharge port 63 toward the fluid outlet 52 of the outer cylinder part 5 .
  • the prevention unit 8 includes a partition plate 81 .
  • the partition plate 81 is positioned between the inner cylinder portion 6 and the outer cylinder portion 5 when viewed in the axial direction D2 of the outer cylinder portion 5, and is located between the fluid flow opening 62 and the discharge port of the inner cylinder portion 6 in the axial direction D1. 63.
  • the partition plate 81 is a ring-shaped disc.
  • the inner diameter of the partition plate 81 is substantially equal to the inner diameter of the inner cylindrical portion 6 .
  • the outer diameter of the partition plate 81 is substantially equal to the inner diameter of the second cylindrical portion 505 of the outer cylindrical portion 5 .
  • the partition plate 81 is arranged such that the inner peripheral edge portion of its lower surface is in contact with the upper end surface of the inner cylindrical portion 6 . Thereby, the partition plate 81 separates the space 25 and the collection space 26 .
  • the separation device 1A since the discharge port 63 is formed separately from the fluid circulation port 62, at least a part of the solid 90 passes through the discharge port 63 on the way through the inner space of the inner cylindrical portion 6 and enters the recovery space. 26. As a result, even the solid 90 that has a small mass and is difficult to settle can be easily discharged to the recovery space 26 . Therefore, according to the separation device 1A, it is possible to improve the discharge efficiency of the solid 90 from the inner cylindrical portion 6 . As a result, it is possible to further improve the separation performance of separating the solids 90 contained in the fluid from the fluid.
  • the separation device 1A is provided with the prevention section 8 (partition plate 81), it is possible to prevent the solids 90 once discharged into the recovery space 26 from flowing into the space 25. This makes it possible to further improve the separation performance of separating the solids 90 contained in the fluid from the fluid.
  • the partition plate 81 may have an outer diameter slightly smaller than the inner diameter of the second cylindrical portion 505.
  • a gap connecting the space 25 and the recovery space 26 may be formed by, for example, forming a hole in the partition plate 81 .
  • the gap preferably has a shape and size that make it difficult for the fluid to flow from the collection space 26 to the space 25 .
  • the separation devices 1 and 1A may not include the opening/closing section 7 .
  • the fluid flows into the casing 2 from the fluid inlet 51 .
  • a part of the fluid that has flowed into the casing 2 flows out from the fluid outlet 52 , and the rest is discharged from the solid discharge part 53 together with the solid 90 .
  • the casing 2 may not have the inner bottom 68 .
  • the inner cylindrical portion 6 may be present at a position that overlaps part of the second cylindrical portion 505 and the enlarged diameter portion 504 in the direction orthogonal to the axial direction D1, and at a position that overlaps the first cylindrical portion 503. does not have to exist.
  • the inner tubular portion 6 and the outer tubular portion 5 may be integrally formed.
  • the second end 602 (upper end) of the inner cylindrical portion 6 may not be located at the middle position in the axial direction D1 of the second cylindrical portion 505 of the outer cylindrical portion 5, and the fluid outlet in the outer cylindrical portion 5 may be It is sufficient if it is on the second end 502 side (lower side) than the position of 52 .
  • the outer cylindrical portion 5 may not include all or at least the lower half of the first cylindrical portion 503 (the portion including the fluid inlet 51).
  • a portion of the inner cylindrical portion 6 including the inner inlet port 61 constitutes a portion of the outer shell of the casing 2 .
  • the inflow tubular portion 21 may be connected to the peripheral edge of the inner inflow port 61 on the outer peripheral surface 67 of the inner tubular portion 6 .
  • the outer tubular portion 5 does not have the fluid inlet 51
  • the inner inlet 61 of the inner tubular portion 6 also serves as the fluid inlet 51 .
  • At least one of the inner diameter and the outer diameter of the first cylindrical portion 503 of the outer cylinder portion 5 may not be constant. At least one of the inner diameter and the outer diameter of the first cylindrical portion 503 may gradually increase or decrease in the axial direction D2 of the outer cylinder portion 5 .
  • At least one of the inner diameter and the outer diameter of the second cylindrical portion 505 of the outer cylinder portion 5 may not be constant. At least one of the inner diameter and the outer diameter of the second cylindrical portion 505 may gradually increase or decrease in the axial direction D2 of the outer cylindrical portion 5 .
  • the number of discharge ports 63 provided in the inner cylindrical portion 6 is not limited to one or two, and may be three or more.
  • At least one of the inner diameter and the outer diameter of the inner cylindrical portion 6 may not be constant. At least one of the inner diameter and the outer diameter of the inner tubular portion 6 may gradually increase or decrease in the axial direction D1 of the inner tubular portion 6 .
  • the solid discharge portion 53 (discharge tubular portion 23) may be connected to the fluid inlet 51 (inflow tubular portion 21) via an appropriate bypass route.
  • the inflow tubular portion 21 is not limited to a square tubular shape, and may have another shape such as a cylindrical shape.
  • the outflow tube portion 22 is not limited to a square tube shape, and may have another shape such as a cylindrical shape.
  • the shape of the rotating body 3 is not limited to a cylindrical shape, and may be another shape.
  • the rotating body 3 may have a truncated cone shape whose diameter gradually increases from the first end 31 side toward the second end 32 side. In this case, by rotating the rotating body 3, the second end 32 side in the space around the rotating body 3 tends to have a negative pressure (lower pressure than the first end 31 side), and the fluid flows inside the casing 2. Easier to pull in.
  • each of the plurality of blades 4 may be inclined by a predetermined angle (for example, 45 degrees) with respect to one radial direction of the rotating body 3.
  • a predetermined angle for example, 45 degrees
  • the distal end on the side of the inner cylindrical portion 6 in the direction of projection from the rotating body 3 is positioned further than the proximal end on the side of the rotating body 3 in the rotational direction R1 of the rotating body 3 (FIGS. 4 and 4). 5) may be positioned rearward.
  • the tip on the side of the inner cylindrical portion 6 in the direction of projection from the rotating body 3 is positioned forward in the direction of rotation R1 of the rotating body 3 from the base end on the side of the rotating body 3.
  • each of the plurality of blades 4 may be inclined by a predetermined angle (for example, 45 degrees) in the rotation direction R1 of the rotor 3 with respect to the radial direction of the rotor 3 .
  • the predetermined angle is not limited to 45 degrees, and may be an angle greater than 0 degrees and less than or equal to 90 degrees.
  • the predetermined angle may be an angle within the range of 10 degrees or more and 80 degrees or less.
  • each of the plurality of blades 4 may have a shape including one or more curved portions such as an arc shape.
  • each of the plurality of blades 4 may be spirally formed around the shaft 30 of the rotating body 3 .
  • the term “spiral” is not limited to a spiral shape with a number of revolutions of 1 or more, but also includes a part of a spiral shape with a number of revolutions of 1.
  • the fluid flowing into the casing 2 from the fluid inlet 51 is not limited to water, and may be liquid other than water or gas such as air.
  • the discharge port 63 may not have a slit shape, and may have an appropriate shape such as a circle or polygon.
  • the discharge port 63 may be connected to the fluid circulation port 62 (opening on the second end 602 side of the inner cylindrical portion 6).
  • the discharge port 63 may have a slit shape extending from the periphery of the fluid circulation port 62 along the axial direction D2.
  • the separation device (1; 1A) of the first aspect comprises a bottomed casing (2), a rotating body (3), and blades (4).
  • the casing (2) comprises an outer tubular portion (5) and an inner tubular portion (6) arranged inside the outer tubular portion (5).
  • the rotating body (3) is arranged inside the inner cylindrical portion (6).
  • the rotor (3) is rotatable around a rotation axis along the axial direction (D1) of the inner cylinder (6).
  • the vanes (4) are arranged between the inner cylinder (6) and the rotor (3).
  • the vanes (4) rotate together with the rotating body (3).
  • the inner cylinder part (6) has an inner inlet (61) and an outlet (63).
  • the inner inlet (61) communicates the inside and the outside of the inner tubular portion (6).
  • the discharge port (63) communicates the inside and outside of the inner cylindrical portion (6).
  • the discharge port (63) discharges solids (90) contained in the fluid that has flowed into the inner cylinder part (6) through the inner inlet (61) into the inner cylinder part (6) and the outer cylinder part (5).
  • Eject between The barrel (5) comprises a fluid outlet (52) and a solids discharge (53).
  • the fluid outlet (52) communicates the inside and outside of the outer tube (5).
  • the fluid outflow port (52) allows the fluid that has flowed out from the inside of the inner tubular portion (6) and flowed into the inside of the outer tubular portion (5) to flow out of the outer tubular portion (5).
  • the solids discharge (53) is separated from the fluid outlet (52) in the axial direction (D1).
  • the solid discharge part (53) discharges the solids (90) discharged from the discharge port (63) of the inner cylinder part (6) to the outside of the outer cylinder part (5).
  • the separation device (1; 1A) of the second mode further comprises an opening/closing part (7) for opening and closing the solid discharging part (53).
  • the discharge port (63) is a slit formed in the inner cylindrical portion (6).
  • the inner tubular portion (6) further comprises a fluid flow port (62).
  • the fluid flow opening (62) is separated from the outlet (63) and the inner inlet (61) in the axial direction (D1).
  • the fluid flow port (62) communicates the inside and outside of the inner tubular portion (6).
  • the fluid flow opening (62) allows the fluid that has flowed into the inner tubular portion (6) to flow out to the outside of the inner tubular portion (6) and the inside of the outer tubular portion (5).
  • the separation device (1A) of the fifth aspect further comprises a prevention part (8) in the fourth aspect.
  • the prevention part (8) prevents the solid (90) discharged from the discharge port (63) between the inner cylinder part (6) and the outer cylinder part (5) from going to the fluid outlet (52). .
  • the prevention part (8) includes a partition plate (81).
  • the partition plate (81) is located between the inner cylinder part (6) and the outer cylinder part (5) when viewed in the axial direction (D1) and is positioned between the inner cylinder part (6) and the outer cylinder part (5) in the axial direction (D1). It is located between the flow port (62) and the discharge port (63).
  • the separation device (1; 1A) of the seventh aspect in any one of the first to sixth aspects, further comprises an inflow tubular part (21).
  • the inflow tube (21) guides the fluid from the outside to the inside of the casing (2).
  • the outer cylindrical part (5) has a bottomed cylindrical shape with a circular inner circumference.
  • the inflow tubular portion (21) protrudes in a direction along one tangential line of the inner peripheral surface of the outer tubular portion (5) when viewed from the axial direction (D1).
  • the separation device (1; 1A) of the tenth aspect in any one of the first to ninth aspects, further comprises an outflow tubular part (22).
  • the outflow cylinder part (22) has an internal space communicating with the fluid outflow port (52) and protrudes from the outer peripheral surface of the outer cylinder part (5).
  • the fluid from which the solid (90) has been separated flows easily through the fluid outlet (52) and the outlet cylinder (22).
  • a separation system (10) of an eleventh aspect comprises the separation device (1; 1A) of any one of the first to tenth aspects, and a driving device (11) for rotationally driving a rotating body (3). Prepare.
  • the separation device and separation system of the present disclosure can improve the separation performance of separating solids contained in a fluid from the fluid. As a result, the amount of impurities contained in domestic water, industrial water, agricultural water, etc. can be reduced. That is, the separation device and separation system of the present disclosure are industrially useful.

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JP2000254549A (ja) 1999-03-08 2000-09-19 Nishihara Environ Sanit Res Corp 薬品注入手段を備えた遠心分離機
JP2010158634A (ja) * 2009-01-09 2010-07-22 Amano Corp オイルミスト除去装置
JP2019202304A (ja) * 2018-05-25 2019-11-28 パナソニックＩｐマネジメント株式会社 分離システム
WO2019230258A1 (ja) * 2018-05-31 2019-12-05 パナソニックＩｐマネジメント株式会社 分離装置

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