WO2022070545A1 - 圧縮空気噴出装置 - Google Patents
圧縮空気噴出装置 Download PDFInfo
- Publication number
- WO2022070545A1 WO2022070545A1 PCT/JP2021/025908 JP2021025908W WO2022070545A1 WO 2022070545 A1 WO2022070545 A1 WO 2022070545A1 JP 2021025908 W JP2021025908 W JP 2021025908W WO 2022070545 A1 WO2022070545 A1 WO 2022070545A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compressed air
- pipe
- discharge port
- port member
- ejection device
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 27
- 239000002184 metal Substances 0.000 claims description 6
- 229920003002 synthetic resin Polymers 0.000 claims description 4
- 239000000057 synthetic resin Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000010865 sewage Substances 0.000 description 14
- 239000000463 material Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000000465 moulding Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
Images
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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
- F16L41/10—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe the extremity of the pipe being screwed into the wall
-
- 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
- B01D21/2433—Discharge mechanisms for floating particles
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/20—Activated sludge processes using diffusers
Definitions
- the present invention relates to a compressed air ejection device, and is particularly suitable for a place for treating sewage or wastewater such as a settling basin in a sewage treatment plant.
- Patent Document 1 Japanese Patent No. 3943551
- Patent Document 2 Japanese Patent No. 5443122
- compressed air ejection device suitable for the scum removing device
- the scum removing device shown in Patent Document 1 has been put into practical use under the nickname of "Weekly Ichikun” (Trademark), and the amount of water outflow associated with scum discharge is compared with that of the conventional scum removing device. It can be reduced to 1/20 to 1/30 and has the feature of contributing to energy saving. That is, when this scum removing device makes a part of the opening of the pipe type scum discharging mechanism (referred to as a pipe gap) submerged in water at the time of discharging the scum, the generated scum flows into the opening and is removed.
- a pipe gap the pipe type scum discharging mechanism
- a configuration is adopted in which a compressed air ejection device is provided on the wall surface side of the wall surface forming the opening where the scum flows, and the compressed air is ejected upward along the wall surface. ..
- the scum can smoothly flow into the opening of the pipe gap, the entire scum can be smoothly moved, and the scum can be discharged quickly.
- FIGS. 3 to 6 are enlarged views of the compressed air ejection device portion.
- the pipe clearance 30 provided with the compressed air ejection device 20 extends in a direction orthogonal to the flow at the end side of the raw water (sewage) of the settling basin T in the flow direction (see arrow a in the figure), and a part of the pipe gap 30 is provided. It is provided so that it can be submerged in water.
- An opening 31 is provided in the upper portion of the pipe clearance 30 along the axial direction.
- the pipe clearance 30 is configured so that a part of the opening 31 can be submerged in water when rotated about the axis by a drive device (not shown).
- the compressed air ejection device 20 is provided on the outside of the pipe clearance 30 on the side where the raw water flows and on the lower side of the opening 31.
- the compressed air ejection device 20 is attached so that the bowl-shaped body (discharge port member) 21 hangs down from the metal pipe material P via the joint portion 22. That is, the bowl-shaped body 21 is attached to the pipe material P with the opening of the bowl-shaped body 21 facing downward.
- This pipe material P extends in the longitudinal direction of the pipe clearance 30 and is connected to a compressed air source (not shown) via a valve.
- the pipe material P is fixed to the pipe clearance 30 via the support 23.
- the inside of the bowl 21 and the inside of the pipe material P are communicated with each other through a hole 24 provided so as to penetrate the axial center of the joint 22 (see FIGS. 4 and 6).
- the compressed air source connected to the pipe material P is connected. Since the valve (not shown) is closed, the raw water does not enter the bowl 21 and therefore the hole 24 does not come into contact with the raw water (sewage), so that clogging can be effectively prevented. (See FIG. 4).
- An object of the compressed air ejection device according to the present invention is to provide a compressed air ejection device that can be manufactured at low cost, is hard to adhere to dirt, can be easily peeled off even if it adheres, and can eject compressed air more uniformly. To provide.
- the compressed air ejection device includes a pipe connected to a source of compressed air and a discharge port member provided in the pipe, and the discharge port member is formed in a cup shape and has a top thereof. Is joined to the pipe, the opening is directed outward in the radial direction of the pipe, and the inside of the pipe and the inside of the discharge port member are communicated with the joint portion between the pipe and the discharge port member. It is a compressed air ejection device provided with a hole to be formed.
- the vertical cross-sectional shape of the peripheral wall forming the opening of the discharge port member is formed so that the inside and outside of the discharge port member, or both of them, are inclined toward the tip of the opening and the wall thickness is reduced. Has been done.
- the cross-sectional shape of the peripheral wall at the opening of the discharge port member is formed so as to be inclined so that the wall thickness becomes smaller toward the tip of the opening, it is easy to mold and can be manufactured at low cost.
- the discharge port member is formed so that the surface thereof has a mirror surface. Since it has a mirror surface, it is difficult for dirt to adhere to it, and even if it adheres, it can be easily peeled off.
- the peripheral wall of the discharge port member may have a recess in which a part of the inner surface is formed in a concave shape to reduce the wall thickness.
- the material cost is low due to the recess, it can be manufactured at a lower cost and the weight can be reduced.
- a plurality of the recesses are formed at intervals in the circumferential direction of the peripheral wall, and ribs along the length direction of the peripheral wall are formed between these recesses.
- the compressed air is evenly discharged in the circumferential direction of the discharge port member without being biased to a part in the circumferential direction.
- the discharge port member has a joint portion to be joined to the pipe made of metal and the others made of synthetic resin.
- the metal joint allows the outlet member to be firmly attached to the pipe.
- the compressed air ejection device according to the present invention is easy to mold and can be manufactured at low cost, and by forming it on a mirror surface, it is difficult for dirt to adhere to it, and even if it adheres, it can be easily peeled off. Can be ejected more evenly.
- FIG. 1 corresponds to the X-ray cross section of FIG.
- the compressed air ejection device A is composed of a pipe P connected to a source of compressed air and a plurality of discharge port members 1 provided in the pipe P.
- the discharge port member 1 is integrally provided with a joint portion 10, and the joint portion 10 is attached to the pipe P.
- the same components as those of the compressed air ejection device described with reference to FIGS. 3 to 6 will be described with reference to the same reference numerals.
- FIG. 1 shows a state in which the discharge port member 1 hangs down from the pipe P and is attached to the pipe P. That is, it shows a state in which the discharge port member 1 hangs down and is attached to the pipe P via the joint portion 10.
- the pipe P is made of metal such as SUS, and as shown in FIGS. 3 and 5 described above, when the compressed air ejection device A is first installed in the pipe clearance of the scum removing device of the settling basin. , Attached to the pipe clearance via a support (see reference numeral 23 in FIGS. 3 and 5). Further, in the case where the scum removing device of the first settling basin is a trough type scum discharging mechanism as shown in FIGS. 7 and 8 of Patent Document 2 described above, the compressed air ejection device A is attached to the trough.
- the pipe P is attached to the side wall.
- the pipe P is attached to the side wall.
- FIG. 1 only one discharge port member 1 is shown in the pipe P, but in an actual device, a large number of discharges are directed in the same direction at predetermined intervals along the longitudinal direction of the pipe P.
- the outlet member 1 is attached.
- This pipe P is provided with a screw hole P'.
- the screw hole P' is formed so that the screw portion 11 of the joint portion 10 described later can be screwed, and the depth of the screw hole P', that is, the wall thickness of the pipe P is the screw of the joint portion 10. It is determined that the joint portion 10 can be firmly fixed when the portion 11 is screwed. Further, the inner diameter of the pipe P is determined so that sufficient compressed air can be supplied to each discharge port member 1 hanging from the pipe P.
- the discharge port member 1 is made of a synthetic resin such as fluororesin, and its outer shape is formed in a cup shape (dog-shaped, bell-shaped, etc.) having an opening 1a at the bottom.
- the discharge port member 1 is a molded product of fluororesin, the surface is mirror-surfaced, so that dirt does not easily adhere even when placed in sewage, and even if it adheres, it can be easily peeled off. You can get the effect you can.
- another method can be adopted as a method of mirror-finishing the surface of the discharge port member 1.
- the surface of the discharge port member 1 is vapor-deposited with ceramics.
- the peripheral wall 2 forming the opening 1a of the discharge port member 1 has a cylindrical portion 2d continuous with the top portion 2c formed in a cylindrical shape, and has a tubular portion 2d in a vertical cross section passing through the axis C thereof.
- the outer surface and the inner surface are formed so as to be inclined so that the wall thickness becomes smaller toward the lower side (tip). That is, the outer side of the peripheral wall 2 is provided with an outer notch 2a that inclines in a direction that reduces the outer diameter of the discharge port member 1 as it goes downward, and the inner side of the peripheral wall 2 discharges as it goes downward.
- An inner notch 2b that is inclined in a direction that increases the inner diameter of the outlet member 1 is provided. Due to the outer notch 2a and the inner notch 2b, both the inner surface and the outer surface of the peripheral wall 2 near the opening 1a are inclined surfaces.
- both the outer notch 2a and the inner notch 2b are provided, but by using one of the notches, only one of them can be an inclined surface. Even in this case, the above-mentioned effect can be obtained.
- a recess 3 having a thin wall thickness of the discharge port member 1 is formed on a part of the inner surface of the peripheral wall 2 of the discharge port member 1.
- the concave portion 3 can be easily formed at the time of molding simply by providing a convex portion corresponding to the concave portion 3 in the mold without requiring a special cutting process or the like. If the recess 3 is provided in the discharge port member 1, the material cost can be reduced, so that the product can be manufactured at a lower cost and the weight can be reduced. In this case, the recess 3 is provided in the tubular portion 2d of the peripheral wall 2 excluding the top 2c of the discharge port member 1, and is continuously formed up to the tip of the opening 1a.
- a plurality of recesses 3 are formed at intervals in the circumferential direction of the discharge port member 1, and ribs 4 are formed between the recesses 3 along the length direction of the discharge port member 1 up to the tip. ..
- the rib 4 is formed in a narrow plate shape that protrudes inward in the radial direction of the tubular portion 2d of the peripheral wall 2 between the adjacent recesses 3. As shown in FIG. 2, the rib 4 is arranged toward the axis C when viewed from the opening 1a side of the peripheral wall 2. In the illustrated example, an inner notch 2b is formed at the lower end of the rib 4.
- the compressed air passes through the plurality of recesses 3 and is mutually partitioned by the ribs 4, so that the compressed air is biased to a part in the circumferential direction. It is evenly discharged in the circumferential direction of the discharge port member 1 without any problem.
- the joint portion 10 is made of metal such as SUS, and has a screw portion 11, a tool engaging portion 12, a flange portion 13, and a hole portion 14.
- the screw portion 11, the tool engaging portion 12, and the flange portion 13 are continuously and integrally configured on the axis C
- the hole portion 14 has a diameter of several mm at the position of the axis C of the integrated object. It is formed in a penetrating state by drilling.
- the hole 14 keeps the inside of the discharge port member 1 and the inside of the pipe P in a communicating state when the discharge port member 1 is attached to the pipe P.
- the threaded portion 11 is formed so as to be screwed into a screw hole P'provided in the pipe P, and the tool engaging portion 12 is formed below the threaded portion 11 in a hexagonal cross section. There is.
- Two flange portions 13 are formed above and below the tool engaging portion 12.
- the tool engaging portion 12 is for mounting a tool for screwing the discharge port member 1 into the screw hole P'of the pipe P, and the flange portion 13 is for resin molding the discharge port member 1. By being insert-molded into, it is used as a joint with the discharge port member 1.
- the joint portion 10 is set in the mold of the resin molding machine, and then injection molding is performed.
- the hole portion 14 is provided in advance in the joint portion 10, it is confirmed whether or not the hole is closed by the molded resin, and when the hole is closed, the hole is drilled. Further, when the hole portion 14 of the joint portion 10 is opened after molding, the hole portion 14 is processed in the molded product.
- the discharge port member 1 When the discharge port member 1 is first installed on the side wall near the scum removing device of the settling basin, or when it is installed on the side wall near the scum pit of the headrace of the first settling basin, it is discharged from the discharge port member 1.
- the generated air bubbles separate the scum attached to the side wall, smooth the movement of the scum, and efficiently remove the scum.
- the compressed air ejection device can be applied not only to a sewage treatment plant but also to a wastewater treatment facility such as wastewater from various factories and a water tank in which scum is generated. Furthermore, it can also be applied when valuable resources are levitated and separated in food factories, chemical factories, and the like.
- a notch 2b is formed at the end of the rib 4 in the vicinity of the opening 1a of the discharge port member 1, but by forming a notch at the lower end of each recess 3, the notch is also formed.
- An inclined surface that reduces the wall thickness of the tubular portion 2d of the peripheral wall 2 may be formed.
- This compressed air ejection device can be suitably used in a place where sewage or wastewater is treated, such as a settling basin in a sewage treatment plant. Air can be ejected more evenly.
- a ... Compressed air ejection device 1 ... Discharge port member 1a ... Opening 2 ... Peripheral wall 2a ... Outer notch 2b ... Inner notch 2c ... Top 2d ; Cylindrical part 3 ... Recessed part 4 ... Rib 10 ; Joint part 11 ... Threaded part 12 ... Tool engaging part 13 ... Flange part 14 ... Hole part P ... Pipe P'... Screw hole
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Public Health (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- Mechanical Engineering (AREA)
- Nozzles (AREA)
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- Jet Pumps And Other Pumps (AREA)
Abstract
Description
前記吐出口部材の開口部を形成する周壁の縦断面形状は、その吐出口部材の内側又は外側、もしくはそれら両方が前記開口部の先端に向かうにしたがって傾斜して壁厚が小さくなるように形成されている。
鏡面であるので、汚れが付着しにくく、付着しても容易に剥離することができる。
金属製の接合部により吐出口部材をパイプに強固に取り付けることができる。
1…吐出口部材
1a…開口部
2…周壁
2a…外側切り欠き
2b…内側切り欠き
2c…頂部
2d…筒状部
3…凹部
4…リブ
10…接合部
11…ネジ部
12…工具係合部
13…フランジ部
14…孔部
P…パイプ
P´…ネジ穴
Claims (5)
- 圧縮空気の供給源に連なるパイプ、そのパイプに設けられた吐出口部材と、を備え、
前記吐出口部材は、カップ状に形成されるとともに、その頂部が前記パイプに接合され、開口部が前記パイプの半径方向外方に向けられており、
前記パイプと前記吐出口部材との接合部に、そのパイプの内側とその吐出口部材の内側とを連通する孔部が設けられてなる圧縮空気噴出装置であって、
前記吐出口部材の開口部を形成する周壁の縦断面形状は、その吐出口部材の内側又は外側、もしくはそれら両方が前記開口部の先端に向かうにしたがって傾斜して壁厚が小さくなるように形成されていることを特徴とする圧縮空気噴出装置。 - 前記吐出口部材は、表面が鏡面を呈するように形成されていることを特徴とする請求項1に記載の圧縮空気噴出装置。
- 前記吐出口部材の前記周壁は、内面の一部を凹状に形成して壁厚を薄くする凹部を有することを特徴とする請求項1又は2に記載の圧縮空気噴出装置。
- 前記凹部は前記周壁の周方向に間隔をおいて複数形成されており、これら凹部の間に前記周壁の長さ方向に沿うリブが形成されていることを特徴とする請求項3に記載の圧縮空気噴出装置。
- 前記吐出口部材は、前記パイプに接合する接合部は金属製であり、他は合成樹脂製であることを特徴とする請求項1~4のいずれかの項に記載の圧縮空気噴出装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/028,427 US20230331589A1 (en) | 2020-09-30 | 2021-07-09 | Compressed air jet device |
BR112023005298A BR112023005298A2 (pt) | 2020-09-30 | 2021-07-09 | Dispositivo de jato de ar comprimido |
JP2021569151A JP7085102B1 (ja) | 2020-09-30 | 2021-07-09 | 圧縮空気噴出装置 |
EP21874849.9A EP4223703A1 (en) | 2020-09-30 | 2021-07-09 | Compressed air jet device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020164408 | 2020-09-30 | ||
JP2020-164408 | 2020-09-30 |
Publications (1)
Publication Number | Publication Date |
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WO2022070545A1 true WO2022070545A1 (ja) | 2022-04-07 |
Family
ID=80949835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2021/025908 WO2022070545A1 (ja) | 2020-09-30 | 2021-07-09 | 圧縮空気噴出装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20230331589A1 (ja) |
EP (1) | EP4223703A1 (ja) |
JP (1) | JP7085102B1 (ja) |
BR (1) | BR112023005298A2 (ja) |
WO (1) | WO2022070545A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5840167A (ja) * | 1982-02-19 | 1983-03-09 | Toshiyuki Kadowaki | 静電塗装装置 |
JP3943551B2 (ja) | 2004-01-29 | 2007-07-11 | 宇都宮工業株式会社 | スカム除去装置 |
JP2011088048A (ja) * | 2009-10-21 | 2011-05-06 | Utsunomiya Kogyo Kk | スカム除去装置 |
US20120159700A1 (en) * | 2010-12-28 | 2012-06-28 | Iacampo Sr Martin | Drain clearing apparatus |
JP2020164408A (ja) | 2019-03-28 | 2020-10-08 | 日本碍子株式会社 | セラミックス多孔体及びその製造方法、並びに集塵用フィルタ |
-
2021
- 2021-07-09 US US18/028,427 patent/US20230331589A1/en active Pending
- 2021-07-09 EP EP21874849.9A patent/EP4223703A1/en active Pending
- 2021-07-09 WO PCT/JP2021/025908 patent/WO2022070545A1/ja unknown
- 2021-07-09 JP JP2021569151A patent/JP7085102B1/ja active Active
- 2021-07-09 BR BR112023005298A patent/BR112023005298A2/pt unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5840167A (ja) * | 1982-02-19 | 1983-03-09 | Toshiyuki Kadowaki | 静電塗装装置 |
JP3943551B2 (ja) | 2004-01-29 | 2007-07-11 | 宇都宮工業株式会社 | スカム除去装置 |
JP2011088048A (ja) * | 2009-10-21 | 2011-05-06 | Utsunomiya Kogyo Kk | スカム除去装置 |
JP5443122B2 (ja) | 2009-10-21 | 2014-03-19 | 宇都宮工業株式会社 | スカム除去装置 |
US20120159700A1 (en) * | 2010-12-28 | 2012-06-28 | Iacampo Sr Martin | Drain clearing apparatus |
JP2020164408A (ja) | 2019-03-28 | 2020-10-08 | 日本碍子株式会社 | セラミックス多孔体及びその製造方法、並びに集塵用フィルタ |
Also Published As
Publication number | Publication date |
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JP7085102B1 (ja) | 2022-06-16 |
US20230331589A1 (en) | 2023-10-19 |
EP4223703A1 (en) | 2023-08-09 |
JPWO2022070545A1 (ja) | 2022-04-07 |
BR112023005298A2 (pt) | 2023-04-25 |
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