WO2019065995A1 - ポンプ及びポンプ組立体 - Google Patents
ポンプ及びポンプ組立体 Download PDFInfo
- Publication number
- WO2019065995A1 WO2019065995A1 PCT/JP2018/036325 JP2018036325W WO2019065995A1 WO 2019065995 A1 WO2019065995 A1 WO 2019065995A1 JP 2018036325 W JP2018036325 W JP 2018036325W WO 2019065995 A1 WO2019065995 A1 WO 2019065995A1
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- WIPO (PCT)
- Prior art keywords
- discharge pipe
- pump
- flange portion
- suction pipe
- pipe
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
Definitions
- the present invention relates to a pump and pump assembly.
- a pump which pumps a liquid by rotating a pump main shaft connected to an impeller with a drive source such as a motor (see, for example, Patent Document 1).
- a pump is configured to pressurize the liquid as the impeller rotates and discharge the liquid from the discharge pipe while sucking the liquid from the suction pipe.
- flanges for connecting with piping for transporting the liquid are integrally formed.
- the diameter (P. C. D) of an imaginary circle passing through the center of the hole through which the bolt passes differs for each standard (e.g., JIS, DIN, ANSI, etc.). Therefore, according to each standard, P.I. C. It is necessary to provide a pump casing with different flanges of D. As a result, it is necessary to make molds that differ only in the flange portion, and to reserve inventory of pump casings that differ only in the flange portion. Therefore, the cost required for manufacturing and stock keeping arises only due to the difference in the specification of the flange portion.
- the present invention has been made in view of the above problems, and one of its purposes is to reduce the cost resulting from the difference in the specifications of the flange portion.
- a pump is provided.
- the pump has a suction pipe and a discharge pipe, and a casing for accommodating an impeller, and a flange unit which is separate from the casing and configured to be attachable to the suction pipe or the discharge pipe.
- a suction pipe and a discharge pipe and a casing for accommodating an impeller, and a flange unit which is separate from the casing and configured to be attachable to the suction pipe or the discharge pipe.
- a pump assembly includes the pump, a drive source configured to rotationally drive the impeller of the pump, and a base supporting the pump and the drive source.
- FIG. 1 is a side view of a pump assembly provided with a pump of the present embodiment.
- FIG. 2 is a front view of the pump seen from the arrow A shown in FIG.
- the pump assembly 10 includes a motor 20 (corresponding to an example of a drive source), a base 30, and a pump 40.
- the pump 40 and the motor 20 are fixed on the base 30.
- the motor 20 has a motor body 21 and a rotatable motor main shaft 22.
- the pump 40 has a casing 41 configured to receive the impeller 46 and a pump main shaft 47 connected to the impeller 46.
- the pump main shaft 47 is connected to the motor main shaft 22 via the coupling 32, and is configured to be rotatable together with the impeller 46 by receiving the driving force of the motor main shaft 22.
- the pump main shaft 47 is rotatably supported by the bearing portion 48.
- the pump 40 of this embodiment is a horizontal axis pump, and the motor main shaft 22 of the motor 20 and the pump main shaft 47 of the pump 40 are connected so as to extend in a substantially horizontal direction.
- the casing 41 has a suction pipe 43 for sucking in the liquid, and a discharge pipe 42 for discharging the liquid pressurized by the impeller 46.
- the suction pipe 43 is arranged such that the opening 43a (see FIG. 2) of the suction pipe 43 faces in a substantially horizontal direction, and the opening 42c (see FIG. 3B described later) of the discharge pipe 42 faces in the substantially vertical direction. And the direction of the discharge pipe 42 is set.
- the suction pipe 43 and the discharge pipe 42 of the pump 40 are respectively attached with flanges 45 and 44 for connecting to a pipe for transporting a liquid.
- the casing 41 and the flanges 44 and 45 may be made of, for example, stainless steel or the like.
- the flanges differ from standard to standard in the diameter (PCD) of the imaginary circle passing through the center of the hole through which the bolt passes. Therefore, in the present embodiment, the flanges 44 and 45 are formed separately from the casing 41. Thereby, flanges 44 and 45 of arbitrary forms can be attached to discharge pipe 42 and suction pipe 43 according to a standard. In other words, by preparing one type of casing 41 and attaching the flanges 44 and 45 of any form to the casing 41, it is possible to easily cope with respective standards in which the forms of the flanges 44 and 45 are different. . In the present embodiment, both of the flanges 44 and 45 are configured to be attached to the discharge pipe 42 and the suction pipe 43, respectively.
- the present invention is not limited thereto. Only one of the flanges 44 and 45 is used. May be attached to the discharge pipe 42 or the suction pipe 43. In other words, any one of the flanges 44 and 45 may be integrally formed with the discharge pipe 42 or the suction pipe 43.
- FIG. 3A is a front view showing an example of the casing 41.
- FIG. 3B is a partially enlarged perspective view showing an example of the discharge pipe 42 of the casing 41.
- FIG. 3C is a side view showing an example of the flange portion 44 attached to the casing 41 shown in FIG. 3A.
- the aspect which attaches the flange part 44 to the discharge pipe 42 is demonstrated, also when attaching the flange part 45 to the suction pipe 43, the same aspect can be taken.
- the discharge pipe 42 of the casing 41 has a first threaded groove 42b on its inner surface.
- the flange portion 44 has a substantially disk-like flange main body 44a and a tubular portion 44b located inside the flange main body 44a.
- the diameter of the tubular portion 44b is slightly smaller than the diameter of the discharge pipe 42, and the outer peripheral surface of the tubular portion 44b is provided with a second screw groove 44c corresponding to the first screw groove 42b.
- the flange portion 44 is fixed to the casing 41 by screwing the second screw groove 44 c of the flange portion 44 into the first screw groove 42 b of the discharge pipe 42.
- the first screw groove 42 b may be provided on the outer surface of the discharge pipe 42.
- the diameter of the tubular portion 44b is formed slightly larger than the diameter of the discharge pipe 42, and the second threaded groove 44c is provided on the inner surface of the tubular portion 44b.
- the flange portion 44 can be screwed to the casing 41 in the same manner.
- the end surface 42a of the discharge pipe 42 of the casing 41 is covered by the flange portion 44.
- the pipe attached to the flange portion 44 does not contact the discharge pipe 42 of the casing 41 and contacts only the flange portion 44. Therefore, if the surface on which the piping of flange 44 is to be attached is formed or processed in advance with high accuracy, after the flange 44 is attached to the casing 41 and before the piping is attached to the flange 44, the piping of the flange 44 and There is no need to process the contact surface of
- FIG. 4A is a partially enlarged perspective view showing another example of the discharge pipe 42 of the casing 41.
- FIG. FIG. 4B is a perspective view showing an example of the flange portion 44 attached to the discharge pipe 42 shown in FIG. 4A.
- the discharge pipe 42 of the casing 41 has a plurality of positioning holes 42d at its end surface 42a.
- the flange main body 44a of the flange portion 44 has a plurality of positioning bosses 44d on the surface in contact with the discharge pipe 42.
- the bosses 44 d are configured to be insertable into the plurality of holes 42 d of the discharge pipe 42.
- the flange portion 44 can be easily positioned and fixed to the discharge pipe 42.
- the flange main body 44 a is brought into contact with the discharge pipe 42 while inserting the bosses 44 d of the flange portion 44 into the plurality of holes 42 d of the discharge pipe 42.
- the end face 42a of the discharge pipe 42 and the face in contact with the end face 42a of the flange main body 44a are fixed by welding or the like.
- the end surface 42 a of the discharge pipe 42 of the casing 41 is covered by the flange portion 44. Therefore, as described in the example of FIGS. 3A to 3C, after attaching the flange portion 44 to the casing 41, it is necessary to process the contact surface of the flange portion 44 with the pipe before attaching the pipe to the flange portion 44 There is not.
- FIG. 5A is a side view showing an example in which the flange portion 44 is attached to the discharge pipe 42 of the casing 41.
- FIG. 5B is a partially enlarged perspective view showing an example of the discharge pipe 42 of the casing 41.
- FIG. 5C is a perspective view showing an example of the flange portion 44.
- FIG. 5D is a perspective view showing an example of the annular fixing member.
- the flange portion 44 is attached to the discharge pipe 42 via the annular fixing member 50.
- a reduced diameter portion 42e is formed at the end of the discharge pipe 42.
- the reduced diameter portion 42 e is formed to have an outer diameter smaller than that of the other portion of the discharge pipe 42.
- the end of the discharge pipe 42 is formed in a stepped shape.
- the flange portion 44 has an enlarged diameter portion 44e having an inner diameter larger than the outer diameter of the discharge pipe 42, and the enlarged diameter portion 44e is disposed so as to surround the outer periphery of the discharge pipe 42. Be done.
- the enlarged diameter portion 44 e has an inner diameter larger than the inner diameter of the other portion of the flange portion 44.
- the annular fixing member 50 is an annular member having a large opening at the center. As shown in FIG. 5A, the annular fixing member 50 is fitted in the gap between the outer peripheral surface of the discharge pipe 42 and the inner peripheral surface of the flange portion 44.
- the annular fixing member 50 is fitted in a gap formed between the reduced diameter portion 42 e of the discharge pipe 42 and the enlarged diameter portion 44 e of the flange portion 44.
- the radial thickness of the annular fixing member 50 is equal to or larger than the size of the gap formed between the reduced diameter portion 42 e of the discharge pipe 42 and the enlarged diameter portion 44 e of the flange portion 44.
- the radial thickness of the annular fixing member 50 is slightly larger than the size of the gap formed between the reduced diameter portion 42 e of the discharge pipe 42 and the enlarged diameter portion 44 e of the flange portion 44.
- the surface (upper surface in FIG. 5A) of the annular fixing member 50, the flange portion 44, and the discharge pipe 42 to which piping is attached Preferably, they are positioned substantially on the same plane. Thereby, after attaching the flange part 44 to the casing 41, before attaching piping to the flange part 44, processing of a contact surface (upper surface in FIG. 5A) with piping can be made unnecessary.
- FIG. 6A is a side view showing an example of a state in which the flange portion 44 is attached to the discharge pipe 42 of the casing 41.
- FIG. FIG. 6B is a perspective view showing an example of the flange portion 44.
- FIG. 6C is a perspective view showing an example of the insertion member.
- the flange portion 44 is attached to the discharge pipe 42 via the insertion member 51. Specifically, the axial movement of the flange portion 44 with respect to the discharge pipe 42 is restricted by the insertion member 51.
- the discharge pipe 42 has the recessed part 42f for receiving the edge part of the insertion member 51 in the outer peripheral part.
- two insertion members 51 are used, and correspondingly the discharge pipe 42 has two recesses 42f.
- the recess 42 f is a slot-like blind hole extending in the circumferential direction of the discharge pipe 42.
- the flange portion 44 is generally annular and disposed so as to surround the outer periphery of the discharge pipe 42. It is desirable that the inner diameter of the flange portion 44 be substantially equal to the outer diameter of the discharge pipe 42.
- the flange portion 44 has a radially penetrating slot 44f into which the insertion member 51 is inserted. In the illustrated example, corresponding to the two insertion members 51, the flange portion 44 has two slots 44f.
- the number of insertion members 51, and the number of slots 44f and the number of recesses 42f corresponding thereto may be any number of one or more.
- the insertion member 51 is a member that can be inserted into the slot 44f and the recess 42f of the discharge pipe 42, and is plate-shaped as an example.
- the shape of the insertion member 51 can be formed in accordance with the shape of the slot 44 f and the shape of the recess 42 f of the discharge pipe 42.
- the insertion member 51 may be a cylindrical member.
- the insertion side end 51 a of the insertion member 51 is formed in an arc shape so as to match the shape of the recess 42 f of the discharge pipe 42 (bottom shape of the recess 42 f).
- the outer peripheral side end 51 b of the insertion member 51 is formed in an arc shape so as to coincide with the outer peripheral surface of the flange portion 44.
- the flange portion 44 has a bolt hole 44g through which a bolt for fixing a pipe passes
- the insertion member 51 has a bolt hole 51c through which a similar bolt passes.
- the insertion member 51 is inserted into the slot 44 f of the flange portion 44 in a state where the flange portion 44 is disposed so as to surround the outer periphery of the discharge pipe 42.
- the insertion side end 51 a of the insertion member 51 is received by the recess 42 f of the discharge pipe 42.
- the flange portion 44 and the insertion member 51 are positioned so that the bolt hole 44 g of the flange portion 44 and the bolt hole 51 c of the insertion member 51 coincide with each other.
- the bolt passes through the bolt hole 44 g of the flange portion 44 and the bolt hole 51 c of the insertion member 51. This prevents the insertion member 51 from coming out of the slot 44 f of the flange portion 44.
- the insertion member 51 is inserted into the slot 44 f of the flange portion 44 and the recess 42 f of the discharge pipe 42, axial movement of the flange portion 44 with respect to the discharge pipe 42 is restricted. As a result, the flange portion 44 can be prevented from coming off the discharge pipe 42.
- the surfaces (upper surface in FIG. 6A) of the flange portion 44 and the discharge pipe 42 to which the pipes are attached are substantially the same plane. Preferably it is positioned on top. Thereby, after attaching the flange part 44 to the casing 41, before attaching piping to the flange part 44, processing of a contact surface (upper surface in FIG. 6A) with piping can be made unnecessary.
- the pump 40 shown in FIG. 1 when the pump 40 shown in FIG. 1 is installed on the base 30, the pump 40 is lifted by a crane or the like and transported, and positioning is performed on the base 30.
- the hooked portion such as a crane or the like is intentionally provided, generally, the hooked portion other than the flange portion 44 does not have a hooked portion in the pump 40. Therefore, when the pump 40 is lifted by hooking a hook on the flange portion 44, a large force is applied to the flange portion 44 in the direction in which the flange portion 44 is removed from the discharge pipe 42.
- FIG. 1 when the pump 40 is installed on the base 30 and the pump 40 is operated, it is known that a force by the operation is applied in the direction of gravity.
- the base 30 may be distorted and the pump 40 may be displaced so as to sink.
- the flange portion 44 is connected to a pipe (not shown), also in this case, a force is applied to the flange portion 44 in the direction in which the flange portion 44 comes out of the discharge pipe 42.
- the flange portion 44 is firmly fixed to the discharge pipe 42, so the flange portion 44 is the discharge pipe 42 can be prevented. Therefore, the attachment mode of the flange portion 44 shown in FIGS. 3A to 5D to the discharge pipe 42 is to be applied to the discharge pipe 42 of the pump 40 in which the discharge pipe 42 as shown in FIG. Is more preferred.
- a pump is provided.
- the pump has a suction pipe and a discharge pipe, and a casing for accommodating an impeller, and a flange unit which is separate from the casing and configured to be attachable to the suction pipe or the discharge pipe.
- a suction pipe and a discharge pipe and a casing for accommodating an impeller, and a flange unit which is separate from the casing and configured to be attachable to the suction pipe or the discharge pipe.
- the flange portion attachable to the suction pipe or the discharge pipe is formed separately from the casing 41.
- the flange part of arbitrary forms can be attached to a suction pipe or a discharge pipe according to a specification.
- by preparing one type of casing and attaching an arbitrary form flange portion to the casing it is possible to easily cope with respective standards in which the form of the flange portion is different. As a result, it is to reduce the cost required for manufacturing and stock keeping that is caused only by the difference in the specifications of the flange portion.
- the suction pipe or the discharge pipe has a positioning hole at an end surface thereof, and the flange portion has a positioning boss inserted into the positioning hole .
- the flange portion can be easily positioned with respect to the suction pipe or the discharge pipe by the positioning boss and the positioning hole.
- the flange portion in the positioned state, can be firmly fixed by welding or the like to the suction pipe or the discharge pipe.
- the suction pipe or the discharge pipe has a first screw groove on an inner surface or an outer surface, and the flange portion corresponds to the first screw groove. It has a tubular portion provided with a 2-threaded groove, and the flange portion is configured to be capable of being screwed to the suction pipe or the discharge pipe having the first threaded groove.
- the flange portion can be screwed to the suction pipe or the discharge pipe, positioning and fixing can be easily performed.
- the end face of the suction pipe or the discharge pipe is covered by the flange portion when the flange portion is attached.
- the end face of the suction pipe or the discharge pipe of the casing is covered by the flange portion.
- the flange portion has an enlarged diameter portion having an inner diameter larger than the outer diameter of the suction pipe or the discharge pipe, and the enlarged diameter portion is the suction pipe
- the pump is an annular member which is disposed to surround the outer periphery of the discharge pipe, and the pump is fitted in a gap between the outer peripheral surface of the suction pipe or the discharge pipe and the inner peripheral surface of the enlarged diameter portion of the flange portion.
- a fixing member is provided, and a radial thickness of the annular fixing member is equal to or larger than a size of the gap.
- the flange portion can be fixed to the suction pipe or the discharge pipe by using the annular fixing member.
- the surfaces of the annular fixing member, the flange portion, and the suction pipe or the discharge pipe on which the pipes are attached are positioned substantially on the same plane. .
- the surface to which the pipe is attached is positioned substantially on the same plane.
- the flange portion has a slot penetrating in a radial direction, and is disposed so as to surround an outer periphery of the suction pipe or the discharge pipe, and the pump is further An insertion member is inserted into the slot of the flange portion, and the suction pipe or the discharge pipe has a recess on its outer peripheral portion for receiving an end of the insertion member inserted into the slot.
- the insertion member is inserted into the slot of the flange portion and the recess of the suction pipe or the discharge pipe.
- the opening of the suction pipe faces in a substantially horizontal direction
- the opening of the discharge pipe faces in a substantially vertical direction
- the flange portion Is configured to be attachable to the discharge pipe.
- a pump assembly includes a pump of a seventh form, a drive source configured to rotationally drive the impeller of the pump, and a base supporting the pump and the drive source.
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
20…モータ
30…ベース
40…ポンプ
41…ケーシング
42…吐出管
42a…端面
42b…第1ねじ溝
42c…開口
42d…穴
42e…縮径部
43…吸込管
44…フランジ部
44a…フランジ本体
44b…管状部
44c…第2ねじ溝
44d…ボス
44e…拡径部
45…フランジ部
43a…開口
46…羽根車
50…環状固定部材
Claims (9)
- 吸込管及び吐出管を有し、羽根車を収容するケーシングと、
前記ケーシングとは別体であり、且つ前記吸込管又は前記吐出管に取付可能に構成されるフランジ部と、を有する、ポンプ。 - 請求項1に記載されたポンプにおいて、
前記吸込管又は前記吐出管は、その端面に位置決め用穴を有し、
前記フランジ部は、前記位置決め用穴に挿入される位置決めボスを有する、ポンプ。 - 請求項1に記載されたポンプにおいて、
前記吸込管又は前記吐出管は、その内面又は外面に第1ねじ溝を有し、
前記フランジ部は、前記第1ねじ溝に対応する第2ねじ溝を備えた管状部を有し、
前記フランジ部は、前記第1ねじ溝を有する前記吸込管又は前記吐出管に螺合可能に構成される、ポンプ。 - 請求項2又は3に記載されたポンプにおいて、
前記吸込管又は前記吐出管は、前記フランジ部が取り付けられたとき、前記フランジ部によってその端面が覆われる、ポンプ。 - 請求項1に記載されたポンプにおいて、
前記フランジ部は、前記吸込管又は前記吐出管の外径よりも大きな内径を有する拡径部を有し、前記拡径部が前記吸込管又は前記吐出管の外周を取り囲むように配置され、
前記ポンプは、前記吸込管又は前記吐出管の外周面と、前記フランジ部の前記拡径部の内周面との隙間に嵌合される環状固定部材を有し、
前記環状固定部材の径方向の厚さが、前記隙間の大きさと同じ又はそれ以上である、ポンプ。 - 請求項5に記載されたポンプにおいて、
前記環状固定部材、前記フランジ部、及び前記吸込管又は前記吐出管のそれぞれの、配管が取り付けられる面が、略同一平面上に位置決めされる、ポンプ。 - 請求項1に記載されたポンプにおいて、
前記フランジ部は、径方向に貫通するスロットを有し、前記吸込管又は前記吐出管の外周を取り囲むように配置され、
前記ポンプは、さらに、前記フランジ部の前記スロットに挿入される挿入部材を有し、
前記吸込管又は前記吐出管は、前記スロットに挿入された前記挿入部材の端部を受けるための凹部をその外周部に有する、ポンプ。 - 請求項1から7の何れか一項に記載されたポンプにおいて、
前記吸込管の開口は、略水平方向を向き、
前記吐出管の開口は、略鉛直方向上を向き、
前記フランジ部は、前記吐出管に取付可能に構成される、ポンプ。 - 請求項8に記載されたポンプと、
前記ポンプの前記羽根車を回転駆動するように構成される駆動源と、
前記ポンプ及び前記駆動源を支持するベースと、を有する、ポンプ組立体。
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BR112020006176-0A BR112020006176B1 (pt) | 2017-09-29 | 2018-09-28 | Bomba e conjunto de bomba |
CN201880063488.9A CN111148904A (zh) | 2017-09-29 | 2018-09-28 | 泵及泵组装体 |
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JP2017190059A JP6944327B2 (ja) | 2017-09-29 | 2017-09-29 | ポンプ及びポンプ組立体 |
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JPS5469418U (ja) * | 1977-10-26 | 1979-05-17 | ||
JPS5615492U (ja) * | 1979-07-17 | 1981-02-10 | ||
JPS57129277A (en) * | 1981-02-04 | 1982-08-11 | Kubota Ltd | Reducing device for pressure pulsation |
JPS62184127U (ja) * | 1986-05-14 | 1987-11-21 | ||
JPH05332297A (ja) * | 1992-06-01 | 1993-12-14 | Ebara Corp | 板金製ポンプケーシング |
JP2000046261A (ja) * | 1998-07-24 | 2000-02-18 | Onda Seisakusho:Kk | 配管アダプタ |
JP2012132502A (ja) * | 2010-12-21 | 2012-07-12 | Sekisui Chem Co Ltd | フランジ付管体構造及び管路構造 |
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JP6944327B2 (ja) | 2021-10-06 |
JP2019065738A (ja) | 2019-04-25 |
CN111148904A (zh) | 2020-05-12 |
BR112020006176B1 (pt) | 2023-10-24 |
BR112020006176A2 (pt) | 2020-10-20 |
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