WO1999030040A1 - Pumping device formed by sheet-metal working - Google Patents
Pumping device formed by sheet-metal working Download PDFInfo
- Publication number
- WO1999030040A1 WO1999030040A1 PCT/JP1997/004484 JP9704484W WO9930040A1 WO 1999030040 A1 WO1999030040 A1 WO 1999030040A1 JP 9704484 W JP9704484 W JP 9704484W WO 9930040 A1 WO9930040 A1 WO 9930040A1
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- WO
- WIPO (PCT)
- Prior art keywords
- pump
- motor
- casing
- impeller
- sheet metal
- Prior art date
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Classifications
-
- 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
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4266—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps made of sheet metal
Definitions
- the present invention relates to a sheet-metal-worked pump device comprising an integral motor portion and a pump portion and having an impeller rotated by a motor in a pump casing.
- the pump device is made of sheet metal to reduce the weight.
- the sheet metal such as stainless steel
- Another object of the present invention is to prevent the deformation of the cover casing and prevent the mechanical seal that seals the rotating shaft from being unable to seal.
- Another object of the present invention is to prevent deformation of the venturi tube communicating with the suction port, to prevent the 0-ring provided at that portion from falling off, and to prevent liquid leakage.
- Yet another object of the present invention is to provide a liner that works effectively in the event of pressure fluctuations, thereby reducing the amount of leakage between the impeller and the casing and preventing seizure of the liner ring. is there.
- Still another object of the present invention is to provide a sheet metal processed pump device capable of easily forming an air vent hole for discharging air near the center of the impeller.
- Still another object of the present invention is to provide a multi-stage pump capable of shortening the axial length of a multi-stage pump.
- the present invention provides a pump device that has been improved. Disclosure of the invention
- the motor part and the pump part integrally comprised,
- the impeller which rotates by a motor in pump casing is provided, and the rotating shaft is sealed by the mechanical seal supported by the cover casing.
- the inside of the cover casing in the radial direction is supported by a support member fixed to the motor side, thereby preventing axial deformation to the motor side.
- an impeller which is constituted by a motor portion and a pump portion integrally formed, is provided in a pump casing and is rotated by a motor, and a suction port provided in the suction casing is connected to the impeller via a venturi tube.
- the suction casing In a sheet metal machined pump device communicating with the inlet, the suction casing has a guide portion extending inward at the suction port, the guide portion engaging the inside of the bench lily tube, and the bench lily.
- a 0-ring is housed in a step formed at the tip of the tube, and a stopper is provided outside the 0-ring.
- a motor part and a pump part which are integrally formed are provided, an impeller rotated by a motor is provided in the pump casing, and a liner is provided between the impeller and the casing part.
- the liner was provided with a U-shaped cross-section liner with the high-pressure side open, and the flange portion radially outward of the liner was attached to a step formed in the casing part. Attached to the liner holder, the inner radial flange is provided with a lip, and the outer radial flange and the inner radial flange are connected by an appropriate number of ribs. I have.
- a pump unit includes an integral motor portion and a pump portion, the pump casing includes an impeller that is rotated by the motor, and the rotating shaft is supported by the cover casing.
- an impeller is provided with an air vent hole, and the impeller is mounted on a boss mounted on a rotating shaft, and the air vent is a radius of the boss. It is partially covered by a flange that extends outward in the direction.
- a plurality of impellers each of which includes a motor portion and a pump portion, which are integrally formed, is provided in a pump casing and is rotated by a motor, and a guide vane and a passage are provided between the impellers.
- a rectifying blade provided between the guide vane and the passage cover is fixed to the guide vane.
- a sheet metal processed pump comprising a motor portion and a pump portion integrally formed, a plurality of impellers rotated by a motor in a pump casing, and a suction port and a discharge port are provided.
- a volute is formed radially outward of the last stage impeller, and the discharge port communicates through the volute.
- FIG. 1 is a side sectional view of a pump device embodying the present invention
- FIG. 2 is a diagram illustrating an effect of the pump device shown in FIG. 1
- FIG. 3 shows another modification of FIG.
- FIG. 4 is a side sectional view showing another modified example of FIG. 1
- FIG. 5 is a side sectional view showing another modified example of FIG. 1
- FIG. 7 is an enlarged view of a Z part of FIG. 1
- FIG. 8 is an enlarged view of FIG. 7, viewed from the right side
- FIG. 9 is a view of a U of FIG.
- FIG. 10 is an enlarged view of a portion
- FIG. 10 is a view of FIG. 9 viewed from the direction of arrow V
- FIG. 11 is a side sectional view showing one embodiment of a pump device using a number of impellers.
- FIG. 1 shows a pump device embodying the present invention.
- a pump device generally indicated by reference numeral A is composed of a pump portion P and a motor portion M, and the motor portion M is housed in a motor casing 1.
- the motor 2 is provided, and the rotating shaft 3 is rotated.
- the pump part P includes a pump casing 4 and a cover casing 5 provided on the motor portion M side of the pump casing 4, and is fixed in the pump casing 4 by the rotating shaft 3 and fixing means 10.
- the rotating impeller 7 is housed. But The liquid sucked from the suction port 8 provided in the pump casing 4 is pressurized by the impeller 7 and discharged from the discharge port 9 provided in the pump casing 4.
- the rotating shaft 3 that drives the impeller 7 is supported by a bearing 10 on the motor side at a location penetrating through the cover casing 5, and the pump side is sealed with a mechanical seal.
- the central portion of the cover casing 5 is supported from the motor side by a support member, in the illustrated example, a thrust flange 12.
- This thrust flange 12 is made of sheet metal and formed in a frusto-conical shape.
- FIG. 2 is a diagram showing the effect of the present invention.
- pressure is applied to the impeller 7 side of the cover casing 5, that is, the left side of the drawing. Therefore, the cover casing 5 moves to the motor side, that is, the right side in the drawing. Then, as shown in FIG. 2, the mechanical seal 11 cannot slide between the first component 11a and the second component 11b, and leakage occurs as shown by the symbol X.
- the support member 12 since the support member 12 is provided, such a disadvantage does not occur.
- FIG. 3 shows another embodiment of the present invention, which is an example in which a keyed boss 10 a is used as a fixing means of the impeller 7.
- the other points are substantially the same as those in FIG.
- FIG. 4 shows another embodiment of the present invention.
- the supporting member 12A is configured by a protruding portion extending to the pump side of the front casing 15 of the module M.
- the other points are substantially the same as the embodiment of FIG.
- Each embodiment is effective for the cover casing 5 made of sheet metal.
- FIG. 5 shows an example in which the support member 12A of FIG. 4 is used in the embodiment of FIG. Other points are substantially the same as those of the above-described embodiments.
- FIG. 6 shows an enlarged view of the circle Y portion in FIG.
- the suction port 8 is attached to the pump casing 4 by, for example, welding 20.
- the pump casing 4 has a guide portion 6a which is bent inward at the suction port 8 and extends. 2 1 is engaged.
- the chamber H 1 outside the bench lily tube 21, that is, the pump casing 4 communicates with the discharge port 9 and has a high pressure.
- the chamber H 2 inside the bench lily tube 21 1 Is sucked by the impeller 7, so that the pressure is low.
- a 0-ring 22 is provided to prevent leakage between chambers H1 and H2.
- only the 0-ring 22 is provided, and the pressure of the chamber ⁇ 1 may deform the guide portion 6a inward in the radial direction and the 0-ring may fall off.
- the pressure of the chamber ⁇ 1 may deform the guide portion 6a inward in the radial direction and the 0-ring may fall off.
- a ring-shaped stopper 24 is fixed to the outside of the stepped portion 23 formed at the tip of the venturi tube 21, and the inner end 6 b of the guide portion 6 a is positioned inside the venturi tube 21. Along a predetermined length of one.
- the 0-ring 22 can come off, but also sufficient sealing performance can be obtained at this portion.
- the stopper 24 has an effect of receiving the high pressure of the chamber H2 and preventing the high pressure from being applied to the inner end 6b of the guide portion 6a. Therefore, it is effective for sheet metal casings. It should be noted that embodiments other than FIG. 1 can be similarly implemented.
- a step portion 25a is formed in the casing portion 25 extending toward the boss portion of the impeller 7, and the step portion 25a has an L-shaped cross section.
- a liner holder 26 is provided, and a rubber liner ring indicated generally by reference numeral 27 is attached to the liner holder 26.
- the liner 27 has a U-shaped cross section, and its high-pressure side is open. Accordingly, the liner ring 27 is formed of the flange portion 27a attached to the liner ring holder 26, the web portion 27b extending radially inward from the flange portion 27a, and the web portion 27b.
- the flange portion 27c has a lip portion 27d extending substantially perpendicularly from the radial inner edge.
- an opening 28 is formed by the flange portions 27a and 27c and the web portion 27b, and when high-pressure water flows into the opening 28, the opening 28 expands, The lip portion 27 d comes into engagement with the impeller 7.
- an appropriate number of ribs 29 are provided at angular intervals in the circumferential direction as shown in FIG. 8 to regulate the amount of deformation.
- the linering 27 having a U-shaped cross section, leakage can be reduced and galling can be prevented. Therefore, it is very suitable for a deformable part such as a sheet metal casing or an impeller.
- a deformable part such as a sheet metal casing or an impeller.
- FIG. 9 is an enlarged view of a portion surrounded by a circle U in FIG. 3, and FIG. 10 is a view seen in the direction of arrow V in FIG.
- an air layer Ai is likely to be formed in the chamber H3 between the impeller 7 and the cover casing 5 due to a difference in centrifugal force. It is known that an air vent hole 30 is provided at an appropriate position of the impeller 7 in order to remove the air layer Ai. The reason is that the mechanical seal 11 becomes dry touch due to the air layer Ai, and there is a risk of seizure.
- the diameter of the air vent hole 30 is preferably about 2 mm, because if the air vent hole 30 is too large, the efficiency will decrease due to leakage.
- the impeller 7 made of sheet metal it is easy to form a hole having a diameter of about 3.5 mm or more. However, that would make the hole too large and reduce efficiency. Therefore, in the present invention, the air vent hole 30 is configured to cover about half of the air vent hole 30 as shown in FIG. 10 by using the flange portion 10b that extends radially outward of the boss portion 10a of the impeller. is there. By doing so, the processing of the hole 30 is facilitated, and the air can be effectively exhausted.
- the present invention can be applied not only to a single-stage pump but also to a multi-stage pump as in the above embodiment.
- An example is shown in FIG. In FIG. 11, components corresponding to FIGS. 1, 3, 4, and 5 are denoted by the same reference numerals.
- a first-stage impeller 7a and a second-stage impeller 7b are mounted on the rotating shaft 3, and a guide is provided to partition between the impellers 7a and 7b.
- Daven 31 and passage cover 33 are provided.
- a rectifying blade 32 is provided between the guide vane 31 and the passage cover 33, and the blade 32 is fixed to the guide vane 31 by welding. Therefore, the blade 3 2 becomes free with respect to the passage cover 3 3.
- the passage cover 33 has a pressure difference in the axial direction of the pump P. Therefore, the passage cover 33 is easily deformed during operation.
- the guide vane 31 does not deform because there is almost no pressure difference in the axial direction.
- the blade 32 is fixed to the passage cover 33, the deformation may cause stress concentration at the fixed welded portion, which may cause damage.
- the blade is fixed to the guide vane 31. No stress concentration occurs. Therefore, it is suitable for sheet metal O
- a volute chamber 35 is formed radially outward of the final stage, that is, the second stage impeller 7 b, and communicates with the discharge port 9. That is, no guide vane is provided for the impeller 7b in the final part (the second stage in the example of FIG. 3).
- the discharge port 9 is provided through the polytube 35, the discharge port 9 can be located radially outward of the impeller 7b, and the length in the axial direction can be shortened.
- the cover casing supporting the mechanical seal provided on the rotating shaft is supported by the support member from the motor side, the mechanical seal does not fail.
- the O-ring which seals the fluid path from the suction port to the venturi tube, is supported by stoppers to receive high-pressure liquid, so the sealing effect is reduced and the 0-ring may fall off due to deformation. Absent.
- the liner between the impeller and the casing has a U-shaped cross section with the high-pressure side open, so that leakage is small and galling can be prevented. Then, holes for letting out the air accumulated in the motor side chamber of the impeller Since part of the hole is covered, large holes can be drilled, improving workability.
- the flow regulating blades are fixed to guide vanes that are not affected by changes in pressure, and are free from the passage cover. Therefore, stress concentration does not occur even if the passage cover is deformed.
- the discharge port is communicated through the radially outer volute of the last stage impeller, the length in the axial direction can be shortened. Therefore, the present invention can be suitably implemented in a sheet metal pump device that is lightweight but relatively easily deformed.
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A pumping device formed by sheet-metal working which is prevented from being deformed due to pressure change and has a good efficiency. According to the invention, a pumping device comprises a motor section (M) and a pump section (P) which are integrally formed, an impeller (7) provided in a pump casing (4) and rotated by a motor (2), a mechanical seal (11) supported by a cover casing (5) to seal a rotating shaft (3) of the impeller, and a support member (21, 12A) secured on a side of the motor (2) to support a radially inner side of the cover casing (5) so as to prevent the cover casing (5) from being moved toward the motor by pressure changes. Thus the cover casing is supported from the side of the motor by the support member, and so malfunction of the mechanical seal is eliminated.
Description
明細書 板金加工したポンプ装置 技術分野 Description Sheet metal processed pump device
本発明は、 一体に構成されたモータ部分とポンプ部分とよりなり、 ポンプケ一 シング内にモータにより回転する羽根車を有する板金加工したポンプ装置に関す o 背景技術 BACKGROUND OF THE INVENTION The present invention relates to a sheet-metal-worked pump device comprising an integral motor portion and a pump portion and having an impeller rotated by a motor in a pump casing.
周知の通り、 板金加工技術の発展に伴い、 ポンプ装置を板金で作り、 重量を軽 減することは知られている。 しかしながら、 ポンプは圧力が加わるので、 ステン レスのような板金の場合に、 変形がしゃすく、 そのために液の漏洩や効率の低下 等の問題が生ずる。 As is well known, it is known that, with the development of sheet metal processing technology, the pump device is made of sheet metal to reduce the weight. However, since pressure is applied to the pump, deformation of the sheet metal, such as stainless steel, is slow, which causes problems such as leakage of liquid and reduction in efficiency.
したがって本発明の主目的は、 圧力変動に際して変形しにくい板金加工したポ ンプ装置を提供するにある。 Accordingly, it is a primary object of the present invention to provide a pump apparatus which is made of a sheet metal and is not easily deformed by pressure fluctuation.
本発明の他の目的は、 カバーケーシングの変形を防止し、 回転軸をシールして いるメニカルシ一ルがシ一ル不能となることを防止することにある。 Another object of the present invention is to prevent the deformation of the cover casing and prevent the mechanical seal that seals the rotating shaft from being unable to seal.
本発明の別の目的は、 吸込口と連通しているベンチュリチューブの変形を防止 し、 その部分に設けた 0—リ ングの脱落を防止するとともに液の漏洩を防止する と ί ある 0 Another object of the present invention is to prevent deformation of the venturi tube communicating with the suction port, to prevent the 0-ring provided at that portion from falling off, and to prevent liquid leakage.
本発明のさらに別の目的は、 圧力変動に際して、 効果的に作用するライナリン グを提供し、 もって羽根車とケーシング部分との間の漏洩量を減少させると共に ライナリ ングの焼付きを防止することにある。 Yet another object of the present invention is to provide a liner that works effectively in the event of pressure fluctuations, thereby reducing the amount of leakage between the impeller and the casing and preventing seizure of the liner ring. is there.
本発明のさらに他の目的は、 羽根車の中心付近の空気を排出するための空気抜 穴を容易に加工できる板金加工したポンプ装置を提供するにある。 Still another object of the present invention is to provide a sheet metal processed pump device capable of easily forming an air vent hole for discharging air near the center of the impeller.
本発明のもう 1つの目的は、 多段ポンプの通路ケーシングが損傷しない板金加 ェしたボンプ装置を提供するにある。 It is another object of the present invention to provide a sheet-metal-pumped pump apparatus in which a passage casing of a multi-stage pump is not damaged.
本発明のさらに別の目的は、 多段ポンプの軸線方向の長さを短くできる板金加
ェしたポンプ装置を提供するにある。 発明の開示 Still another object of the present invention is to provide a multi-stage pump capable of shortening the axial length of a multi-stage pump. The present invention provides a pump device that has been improved. Disclosure of the invention
本発明によれば、 一体に構成されたモータ部分とポンプ部分とよりなり、 ボン プケ一シング内にモータにより回転する羽根車を備え、 回転軸がカバーケーシン グで支持されたメカニカルシールでシールされている板金加工したボンプ装置に おいて、 前記カバ一ケーシングはその半径方向内側がモータ側に固定された支持 部材で支持されてモータ側への軸線方向の変形が防止されている。 ADVANTAGE OF THE INVENTION According to this invention, it comprises the motor part and the pump part integrally comprised, The impeller which rotates by a motor in pump casing is provided, and the rotating shaft is sealed by the mechanical seal supported by the cover casing. In the above-described sheet metal processed pump device, the inside of the cover casing in the radial direction is supported by a support member fixed to the motor side, thereby preventing axial deformation to the motor side.
また本発明によれば、 一体に構成されたモータ部分とポンプ部分とよりなり、 ポンプケーシング内にモータにより回転する羽根車を備え、 吸込ケーシングに設 けた吸込口はベンチュリチューブを介して羽根車の入口に連通している板金加工 したポンプ装置において、 吸込ケ一シングは吸込口の所で内方に延びる案内部分 を有し、 その案内部分はベンチユリチューブの内側に係合しており、 ベンチユリ チューブの先端に形成した段部には 0—リ ングが収納され、 その 0—リ ングの外 側にストツパが設けられている。 Further, according to the present invention, an impeller, which is constituted by a motor portion and a pump portion integrally formed, is provided in a pump casing and is rotated by a motor, and a suction port provided in the suction casing is connected to the impeller via a venturi tube. In a sheet metal machined pump device communicating with the inlet, the suction casing has a guide portion extending inward at the suction port, the guide portion engaging the inside of the bench lily tube, and the bench lily. A 0-ring is housed in a step formed at the tip of the tube, and a stopper is provided outside the 0-ring.
そして本発明によれば、 一体に構成されたモータ部分とポンプ部分とよりなり、 ポンプケ一シング内にモータにより回転する羽根車を備え、 羽根車とケーシング 部分との間にライナリ ングが設けられている板金加工したポンプ装置において、 ライナリ ングは高圧側が開いている断面コ字状のライナリ ングを備え、 そのライ ナリ ングの半径方向外方のフラ ンジ部分はケーシング部分に形成した段部に取付 けたライナリ ングホルダに取付けられ、 その半径方向内方のフランジ部分にはリ ップ部が設けられ、 半径方向外方のフランジ部分と半径方向内方のフラ ンジ部分 とは適数のリブで連結されている。 Further, according to the present invention, a motor part and a pump part which are integrally formed are provided, an impeller rotated by a motor is provided in the pump casing, and a liner is provided between the impeller and the casing part. In the sheet metal machined pump device, the liner was provided with a U-shaped cross-section liner with the high-pressure side open, and the flange portion radially outward of the liner was attached to a step formed in the casing part. Attached to the liner holder, the inner radial flange is provided with a lip, and the outer radial flange and the inner radial flange are connected by an appropriate number of ribs. I have.
さらに本発明によれば、 一体に構成されたモータ部分とポンプ部分とよりなり、 ポンプケ一シング内にモータにより回転する羽根車を備え、 回転軸がカバ一ケ一 シングで支持されたメ力二カルシールでシールされている板金加工したポンプ装 置において、 羽根車には空気抜穴が穿設され、 羽根車は回転軸に取付けたボス部 に取付けられ、 前記空気抜穴は前記ボス部の半径方向外方に拡がるフランジで部 分的に覆われている。
また本発明によれば、 一体に構成されたモータ部分とボンプ部分とよりなり、 ポンプケーシング内にモータにより回転する複数の羽根車を備え、 それらの羽根 車の間はガイ ドべ一ンと通路カバーとで区画されている板金加工したポンプ装置 において、 前記ガイ ドベーンと通路カバーとの間に設けた整流用のブレードがガ ィ ドベーンに固着されている。 Furthermore, according to the present invention, a pump unit includes an integral motor portion and a pump portion, the pump casing includes an impeller that is rotated by the motor, and the rotating shaft is supported by the cover casing. In a sheet metal processed pump device sealed with a cull seal, an impeller is provided with an air vent hole, and the impeller is mounted on a boss mounted on a rotating shaft, and the air vent is a radius of the boss. It is partially covered by a flange that extends outward in the direction. Further, according to the present invention, a plurality of impellers, each of which includes a motor portion and a pump portion, which are integrally formed, is provided in a pump casing and is rotated by a motor, and a guide vane and a passage are provided between the impellers. In a sheet metal working pump device partitioned by a cover, a rectifying blade provided between the guide vane and the passage cover is fixed to the guide vane.
そして本発明によれば、 一体に構成されたモータ部分とポンプ部分とよりなり、 ポンプケーシング内にモータにより回転する複数の羽根車を備え、 そして吸込口 および吐出口が設けられた板金加工したポンプ装置において、 最終段の羽根車の 半径方向外方にボリユートが形成され、 そのボリュ一トを介して吐出口が連通し ている。 図面の簡単な説明 According to the present invention, a sheet metal processed pump comprising a motor portion and a pump portion integrally formed, a plurality of impellers rotated by a motor in a pump casing, and a suction port and a discharge port are provided. In the apparatus, a volute is formed radially outward of the last stage impeller, and the discharge port communicates through the volute. BRIEF DESCRIPTION OF THE FIGURES
図 1は、 本発明を実施したポンプ装置の側断面図であり、 図 2は、 図 1に示す ポンプ装置の効果を説明する図であり、 図 3は、 図 1の他の変形例を示す側断面 図であり、 図 4は、 図 1の別の変形例を示す側断面図であり、 図 5は、 図 1のさ らに他の変形例を示す側断面図であり、 図 6は、 図 1の Y部分の拡大図であり、 図 7は、 図 1の Z部分の拡大図であり、 図 8は、 図 7を右側から見た図であり、 図 9は、 図 3の U部分の拡大図であり、 図 1 0は、 図 9を矢印 V方向から見た図 であり、 図 1 1は、 多数の羽根車を用いたポンプ装置の 1実施例を示す側断面図 FIG. 1 is a side sectional view of a pump device embodying the present invention, FIG. 2 is a diagram illustrating an effect of the pump device shown in FIG. 1, and FIG. 3 shows another modification of FIG. FIG. 4 is a side sectional view showing another modified example of FIG. 1, FIG. 5 is a side sectional view showing another modified example of FIG. 1, and FIG. , FIG. 7 is an enlarged view of a Z part of FIG. 1, FIG. 8 is an enlarged view of FIG. 7, viewed from the right side, and FIG. 9 is a view of a U of FIG. FIG. 10 is an enlarged view of a portion, FIG. 10 is a view of FIG. 9 viewed from the direction of arrow V, and FIG. 11 is a side sectional view showing one embodiment of a pump device using a number of impellers.
^め O 発明を実施するための最良の形態 BEST MODE FOR CARRYING OUT THE INVENTION
本発明をより詳細に詳述するために、 添付の図面に従ってこれを説明する。 図 1は本発明を実施するポンプ装置を示し、 図において全体を符号 Aで示すポ ンプ装置にポンプ部分 Pとモータ部分 Mとで構成され、 モータ部分 Mはモータケ —シング 1内に収納されたモータ 2と備え、 回転軸 3を回転するようになってい る。 ポンプ部分 Pはポンプケーシング 4と、 このポンプケーシング 4のモータ部 分 M側に設けたカバ一ケーシング 5を備え、 ポンプケ一シング 4の中には前記回 転軸 3と固定手段 1 0で固定されて回転する羽根車 7が収納されている。 したが
つて、 ポンプケーシング 4に設けた吸込口 8から吸込まれた液は羽根車 7によつ て昇圧され、 ポンプケーシング 4に設けた吐出口 9から吐出される。 The present invention will be described in more detail with reference to the accompanying drawings. FIG. 1 shows a pump device embodying the present invention. In the figure, a pump device generally indicated by reference numeral A is composed of a pump portion P and a motor portion M, and the motor portion M is housed in a motor casing 1. The motor 2 is provided, and the rotating shaft 3 is rotated. The pump part P includes a pump casing 4 and a cover casing 5 provided on the motor portion M side of the pump casing 4, and is fixed in the pump casing 4 by the rotating shaft 3 and fixing means 10. The rotating impeller 7 is housed. But The liquid sucked from the suction port 8 provided in the pump casing 4 is pressurized by the impeller 7 and discharged from the discharge port 9 provided in the pump casing 4.
羽根車 7を駆動する回転軸 3はカバーケーシング 5を貫通する所でモータ側が 軸受 1 0で支持され、 ポンプ側がメカニカルシールでシールされている。 そして このカバーケーシング 5はその中心部付近が支持部材、 図示の例ではスラストフ ランジ 1 2でモータ側から支持されている。 このスラス トフランジ 1 2は板金製 で截頭円錐形状に形成されている。 The rotating shaft 3 that drives the impeller 7 is supported by a bearing 10 on the motor side at a location penetrating through the cover casing 5, and the pump side is sealed with a mechanical seal. The central portion of the cover casing 5 is supported from the motor side by a support member, in the illustrated example, a thrust flange 12. This thrust flange 12 is made of sheet metal and formed in a frusto-conical shape.
図 2は本発明の効果を示す図である。 図 1から解るようにカバ一ケーシング 5 の羽根車 7側すなわち図面の左側は圧力を受ける。 そのためにカバーケーシング 5はモータ側すなわち図面の右側に移動する。 すると、 図 2に示すようにメカ二 カルシール 1 1は第 1の構成部品 1 1 aと第 2の構成部品 1 1 bとの摺動ができ なくなり、 符号 Xで示すように漏洩を生ずる。 しかるに本発明では支持部材 1 2 があるので、 このような不都合は生じない。 FIG. 2 is a diagram showing the effect of the present invention. As can be seen from FIG. 1, pressure is applied to the impeller 7 side of the cover casing 5, that is, the left side of the drawing. Therefore, the cover casing 5 moves to the motor side, that is, the right side in the drawing. Then, as shown in FIG. 2, the mechanical seal 11 cannot slide between the first component 11a and the second component 11b, and leakage occurs as shown by the symbol X. However, in the present invention, since the support member 12 is provided, such a disadvantage does not occur.
図 3は本発明の別の実施例を示し、 羽根車 7の固定手段としてキー止めしたボ ス 1 0 aを用いた例である。 その他の点は実質的に図 1と同じであるので、 同一 符号で同一部品を示し、 説明を省略する。 FIG. 3 shows another embodiment of the present invention, which is an example in which a keyed boss 10 a is used as a fixing means of the impeller 7. The other points are substantially the same as those in FIG.
図 4は本発明の他の実施例を示している。 この例では支持部材 1 2 Aとしてモ 一夕 Mの前部ケーシング 1 5のポンプ側に延びる突出部で構成した例である。 そ の他の点は図 1の実施例と実質的に同じである。 いずれの実施例も板金製のカバ ーケーシング 5に対して効果的である。 FIG. 4 shows another embodiment of the present invention. In this example, the supporting member 12A is configured by a protruding portion extending to the pump side of the front casing 15 of the module M. The other points are substantially the same as the embodiment of FIG. Each embodiment is effective for the cover casing 5 made of sheet metal.
図 5は図 3の実施例に図 4の支持部材 1 2 Aを用いた例である。 その他の点は 前記の各実施例と実質的に同じである。 FIG. 5 shows an example in which the support member 12A of FIG. 4 is used in the embodiment of FIG. Other points are substantially the same as those of the above-described embodiments.
図 1の円 Y部分の拡大図が図 6に示されている。 前述の通り吸込口 8はポンプ ケーシング 4に例えば溶接 2 0により取付けられており、 ポンプケ一シング 4は 吸込口 8の所で内方に折り曲げられた案内部分 6 aが延び、 そしてベンチユリチ ユ ーブ 2 1と係合している。 そして、 ベンチユリチューブ 2 1の外方の室 H 1す なわちポンプケーシング 4との間は吐出口 9に連通していて高圧であり、 他方、 ベンチユリチューブ 2 1の内方の室 H 2は羽根車 7で吸込まれるので圧力が低い。 室 H 1および H 2間の漏洩を防止するために 0—リ ング 2 2が設けられている。
しかしながら、 従来技術によれば単に 0—リング 2 2が設けられているだけで、 室 Η 1の圧力によって案内部分 6 aが半径方向内方に変形して 0 —リ ングが脱落 するおそれがあつた。 FIG. 6 shows an enlarged view of the circle Y portion in FIG. As described above, the suction port 8 is attached to the pump casing 4 by, for example, welding 20.The pump casing 4 has a guide portion 6a which is bent inward at the suction port 8 and extends. 2 1 is engaged. The chamber H 1 outside the bench lily tube 21, that is, the pump casing 4 communicates with the discharge port 9 and has a high pressure. On the other hand, the chamber H 2 inside the bench lily tube 21 1 Is sucked by the impeller 7, so that the pressure is low. A 0-ring 22 is provided to prevent leakage between chambers H1 and H2. However, according to the prior art, only the 0-ring 22 is provided, and the pressure of the chamber Η1 may deform the guide portion 6a inward in the radial direction and the 0-ring may fall off. Was.
そこで本発明ではベンチュリチューブ 2 1の先端に形成した段部 2 3の外側に リ ング状のストッパ 2 4が固着され、 そして案内部分 6 aの内端 6 bがベンチュ リチューブ 2 1の内方に沿って所定長さ 1だけ内方に延びている。 Therefore, in the present invention, a ring-shaped stopper 24 is fixed to the outside of the stepped portion 23 formed at the tip of the venturi tube 21, and the inner end 6 b of the guide portion 6 a is positioned inside the venturi tube 21. Along a predetermined length of one.
したがって、 0—リ ング 2 2の脱落は勿論のこと、 この部分のシール性を充分 に得ることができる。 尚、 組立に際しては 0 —リ ング 2 2を挿入してからストッ パ 2 4を固着すればよい。 このストツバ 2 4は室 H 2の高圧を受け持って案内部 分 6 aの内端 6 bの方に高圧が印加しないようにする効果を有している。 したが つて板金製のケーシングに対して効果的である。 なお、 図 1以外の実施例でも同 様に実施できる。 Therefore, not only the 0-ring 22 can come off, but also sufficient sealing performance can be obtained at this portion. When assembling, it is sufficient to insert the 0-ring 22 before fixing the stopper 24. The stopper 24 has an effect of receiving the high pressure of the chamber H2 and preventing the high pressure from being applied to the inner end 6b of the guide portion 6a. Therefore, it is effective for sheet metal casings. It should be noted that embodiments other than FIG. 1 can be similarly implemented.
図 7は図 1の円 Zで囲んだ部分の拡大図である。 周知の通り、 羽根車 7とケー シング部分 2 5との間にはライナリ ングが設けられ、 羽根車 7の回転部分と固定 部材であるケーシング部分 2 5との間をシールしている。 しかしながら、 従来技 術によれば、 ケーシング部分 2 5はソリ ッ ドタイプのリング状のライナリ ングを 固定していた。 したがって、 ライナリングと羽根車 7との間隙が大きいと漏洩が 大きくポンプ効率が低下し、 小さいと嚙み込みを生ずる。 FIG. 7 is an enlarged view of a portion surrounded by a circle Z in FIG. As is well known, a liner is provided between the impeller 7 and the casing portion 25 to seal between the rotating portion of the impeller 7 and the casing portion 25 as a fixing member. However, according to the conventional technology, the casing portion 25 has a solid type ring-shaped liner ring fixed thereto. Therefore, if the gap between the liner ring and the impeller 7 is large, the leakage is large and the pump efficiency is reduced, and if the gap is small, penetration occurs.
そこで、 本発明では図 7で示すように、 羽根車 7のボス部に向って延びるケ一 シング部分 2 5に段部 2 5 aを形成し、 その段部 2 5 aに断面 L字状のライナリ ングホルダ 2 6が設けられ、 そのライナリ ングホルダ 2 6に全体を符号 2 7で示 すゴム製のライナリングが取付けられている。 このライナリ ング 2 7は断面がコ 字状に形成され、 その高圧側が開いて位置している。 したがって、 ライナリ ング 2 7はライナリングホルダ 2 6に取付けられているフランジ部分 2 7 aとそのフ ランジ部分 2 7 aから半径方向内方に延びるウェブ部分 2 7 bとそのウェブ部分 2 7 bの半径方向内縁からほぼ直角方向に延びてリ ップ部 2 7 dを有するフラン ジ部分 2 7 cとよりなっている。 Therefore, in the present invention, as shown in FIG. 7, a step portion 25a is formed in the casing portion 25 extending toward the boss portion of the impeller 7, and the step portion 25a has an L-shaped cross section. A liner holder 26 is provided, and a rubber liner ring indicated generally by reference numeral 27 is attached to the liner holder 26. The liner 27 has a U-shaped cross section, and its high-pressure side is open. Accordingly, the liner ring 27 is formed of the flange portion 27a attached to the liner ring holder 26, the web portion 27b extending radially inward from the flange portion 27a, and the web portion 27b. The flange portion 27c has a lip portion 27d extending substantially perpendicularly from the radial inner edge.
したがって、 このフランジ部分 2 7 a、 2 7 cとウェブ部分 2 7 bとで開口部 2 8が形成され、 この開口部 2 8に高圧水が流入すると、 開口部 2 8が拡がって、
リ ップ部 2 7 dが羽根車 7と係合するようになる。 しかしながら、 あまり変形し すぎると摩耗等に好まく しないので、 図 8に示すように円周方向に角度的に離れ て適数のリブ 2 9を設け、 変形量を規制してある。 Therefore, an opening 28 is formed by the flange portions 27a and 27c and the web portion 27b, and when high-pressure water flows into the opening 28, the opening 28 expands, The lip portion 27 d comes into engagement with the impeller 7. However, since excessive deformation does not favor wear and the like, an appropriate number of ribs 29 are provided at angular intervals in the circumferential direction as shown in FIG. 8 to regulate the amount of deformation.
このように本発明によれば断面コ字状のライナリ ング 2 7を設けることで漏洩 が少なく、 またかじりを防止することができる。 したがって、 板金製のケ一シン グ部分や羽根車のように変形しやすいものに極めて好適である。 なお、 図 1の例 について説明したが、 図 3、 図 4、 図 5の例に本発明が適用できることは明らか であ 0 As described above, according to the present invention, by providing the linering 27 having a U-shaped cross section, leakage can be reduced and galling can be prevented. Therefore, it is very suitable for a deformable part such as a sheet metal casing or an impeller. Incidentally, an example has been described in FIGS. 1, 3, 4, clearly der that the present invention can be applied to the example of FIG. 5 0
図 9は図 3の丸印 Uで囲った部分の拡大図であり、 図 1 0は図 9の矢印 V方向 に見た図である。 図 9において周知の通り羽根車 7とカバーケーシング 5との間 の室 H 3には空気層 A iが遠心力の差で形成されやすい。 この空気層 A iを除去 するために羽根車 7の適所に空気抜穴 3 0を設けることは知られている。 その理 由は空気層 A iによりメカニカルシール 1 1がドライタツチとなり焼付きのおそ れがあるからである。 FIG. 9 is an enlarged view of a portion surrounded by a circle U in FIG. 3, and FIG. 10 is a view seen in the direction of arrow V in FIG. As is well known in FIG. 9, an air layer Ai is likely to be formed in the chamber H3 between the impeller 7 and the cover casing 5 due to a difference in centrifugal force. It is known that an air vent hole 30 is provided at an appropriate position of the impeller 7 in order to remove the air layer Ai. The reason is that the mechanical seal 11 becomes dry touch due to the air layer Ai, and there is a risk of seizure.
しかしながら、 この空気抜穴 3 0はあまり大きすぎると漏洩による効率低下を 生ずるので直径 2 m m程度が好ましい。 他方、 板金製の羽根車 7においては直径 3 . 5 m m程度以上の穴を穿設するのが加工上容易である。 しかしながら、 それ では穴が大きすぎて効率が低下する。 そこで本発明では羽根車のボス部 1 0 aの 半径方向外方に拡がりフランジ部 1 0 bを利用して図 1 0に示すように空気抜穴 3 0を半分程度を覆うように構成してある。 このようにすることによって、 穴 3 0の加工が容易となり、 しかも効果的に空気を排出することができる。 However, the diameter of the air vent hole 30 is preferably about 2 mm, because if the air vent hole 30 is too large, the efficiency will decrease due to leakage. On the other hand, in the impeller 7 made of sheet metal, it is easy to form a hole having a diameter of about 3.5 mm or more. However, that would make the hole too large and reduce efficiency. Therefore, in the present invention, the air vent hole 30 is configured to cover about half of the air vent hole 30 as shown in FIG. 10 by using the flange portion 10b that extends radially outward of the boss portion 10a of the impeller. is there. By doing so, the processing of the hole 30 is facilitated, and the air can be effectively exhausted.
本発明は前記実施例のように単段ポンプではなく多段ポンプにも適用できる。 その例が図 1 1に示されている。 図 1 1において図 1、 図 3、 図 4、 図 5に対応 する部品は同じ符号で示されている。 図示の実施例において 1段目の羽根車 7 a と 2段目の羽根車 7 bが回転軸 3に取付けられており、 それらの羽根車 7 a、 7 bの間を区画するために、 ガイ ドベーン 3 1および通路カバ一 3 3が設けられて いる。 そしてガイ ドべ一ン 3 1と通路カバー 3 3との間には整流用のブレード 3 2が設けられ、 このブレード 3 2はガイ ドべーン 3 1に溶接により固着されてい る。 したがって、 ブレード 3 2は通路カバー 3 3に対してフリーの状態となって
いる。 通路カバー 3 3はポンプ Pの軸線方向に圧力差が生じている。 したがって、 通路カバー 3 3は運転中に変形しやすい。 他方ガイ ドベーン 3 1は軸線方向の圧 力差はほとんどないので、 変形しない。 The present invention can be applied not only to a single-stage pump but also to a multi-stage pump as in the above embodiment. An example is shown in FIG. In FIG. 11, components corresponding to FIGS. 1, 3, 4, and 5 are denoted by the same reference numerals. In the illustrated embodiment, a first-stage impeller 7a and a second-stage impeller 7b are mounted on the rotating shaft 3, and a guide is provided to partition between the impellers 7a and 7b. Daven 31 and passage cover 33 are provided. A rectifying blade 32 is provided between the guide vane 31 and the passage cover 33, and the blade 32 is fixed to the guide vane 31 by welding. Therefore, the blade 3 2 becomes free with respect to the passage cover 3 3. I have. The passage cover 33 has a pressure difference in the axial direction of the pump P. Therefore, the passage cover 33 is easily deformed during operation. On the other hand, the guide vane 31 does not deform because there is almost no pressure difference in the axial direction.
通路カバ一 3 3にプレード 3 2を固定するとその変形により固定した溶接部分 に応力集中を生じ、 破損のおそれがあるが、 本発明では、 ガイ ドベーン 3 1にブ レ一ドを固着したので、 応力集中が生じない。 それ故に板金製の場合に好適であ O If the blade 32 is fixed to the passage cover 33, the deformation may cause stress concentration at the fixed welded portion, which may cause damage.In the present invention, the blade is fixed to the guide vane 31. No stress concentration occurs. Therefore, it is suitable for sheet metal O
さらに本発明によれば、 最終段すなわち 2段目の羽根車 7 bの半径方向外方に ボリユート室 3 5が形成され、 そして吐出口 9に連通している。 すなわち最終部 (図 3の例では 2段目) の羽根車 7 bに関してはガイ ドベーンが設けられていな い o Further, according to the present invention, a volute chamber 35 is formed radially outward of the final stage, that is, the second stage impeller 7 b, and communicates with the discharge port 9. That is, no guide vane is provided for the impeller 7b in the final part (the second stage in the example of FIG. 3).
従来技術のように最終段の羽根車から液体をガイ ドベーンを介して案内すると、 吐出口 9の位置の最終段の羽根車 7 bより軸線方向に偏寄し、 その分軸線方向の 長さが増加する。 しかるに本発明ではポリユート 3 5を介して吐出口 9を設けた ので、 吐出口 9を羽根車 7 bの半径方向外方に位置させることができ、 軸線方向 の長さを短くできる。 When the liquid is guided from the last stage impeller through the guide vane as in the prior art, it is deviated in the axial direction from the last stage impeller 7 b at the position of the discharge port 9, and the length in the axial direction is reduced accordingly. To increase. However, in the present invention, since the discharge port 9 is provided through the polytube 35, the discharge port 9 can be located radially outward of the impeller 7b, and the length in the axial direction can be shortened.
なお、 以上の実施例はいずれも遠心ポンプについて図示したが、 本発明はその 他のポンプ装置に適用できることは明らかである。 発明の効果 Although all of the above embodiments have been illustrated with respect to a centrifugal pump, it is apparent that the present invention can be applied to other pump devices. The invention's effect
以上の通り本発明によれば、 回転軸に設けたメカニカルシールを支持している カバーケーシングを支持部材でモータ側から支持したので、 メ力二カルシールが 機能しなくなることがない。 As described above, according to the present invention, since the cover casing supporting the mechanical seal provided on the rotating shaft is supported by the support member from the motor side, the mechanical seal does not fail.
また、 吸込口からベンチュリチューブに至る液路をシールする 0―リングをス トツパで支持し、 高圧の液を受け止めたので、 シール効果が低下したり、 0—リ ングが変形により脱落することがない。 In addition, the O-ring, which seals the fluid path from the suction port to the venturi tube, is supported by stoppers to receive high-pressure liquid, so the sealing effect is reduced and the 0-ring may fall off due to deformation. Absent.
さらに、 羽根車とケーシング部分との間のライナリ ングが、 高圧側が開いてい る断面コ字状としたので、 漏洩が少なく、 かっかじりを防止することができる。 そして、 羽根車のモータ側の室に溜まる空気を流出させる穴をボス部のフラ ン
ジで一部を覆ったので、 大きい穴を開けることができ、 加工性が向上する。 In addition, the liner between the impeller and the casing has a U-shaped cross section with the high-pressure side open, so that leakage is small and galling can be prevented. Then, holes for letting out the air accumulated in the motor side chamber of the impeller Since part of the hole is covered, large holes can be drilled, improving workability.
多段ポンプにおいて、 整流用のブレードを圧力の変化の影響を受けないガイ ド ベーンに固着し、 通路カバーとはフリーにしたので、 通路カバーが変形しても応 力集中は生じない。 In a multi-stage pump, the flow regulating blades are fixed to guide vanes that are not affected by changes in pressure, and are free from the passage cover. Therefore, stress concentration does not occur even if the passage cover is deformed.
そして最終段の羽根車の半径方向外方のボリユ ートを介して吐出口を連通した ので軸線方向の長さを短くできる。 したがって、 軽量であるが、 比較的に変形し やすい板金製のポンプ装置において、 本発明は好適に実施できる。
Further, since the discharge port is communicated through the radially outer volute of the last stage impeller, the length in the axial direction can be shortened. Therefore, the present invention can be suitably implemented in a sheet metal pump device that is lightweight but relatively easily deformed.
Claims
1 . 一体に構成されたモータ部分とポンプ部分とよりなり、 ポンプケーシング 内にモータにより回転する羽根車を備え、 回転軸がカバーケーシングで支持され たメカニカルシールでシールされている板金加工したポンプ装置において、 前記 カバーケーシングはその半径方向内側がモータ側に固定された支持部材で支持さ れてモータ側への軸線方向の変形が防止されていることを特徴とする板金加工し たポンプ装置。 1. A pump device made of sheet metal with a motor part and a pump part that are integrally configured, an impeller that is rotated by a motor in a pump casing, and a rotating shaft that is sealed with a mechanical seal supported by a cover casing. 3. The pump apparatus according to claim 1, wherein the cover casing has a radially inner side supported by a supporting member fixed to the motor side to prevent deformation in the axial direction toward the motor side.
2 . —体に構成されたモータ部分とポンプ部分とよりなり、 ポンプケ一シング 内にモータにより回転する羽根車を備え、 吸込ケーシングに設けた吸込口はベン チユリチューブを介して羽根車の入口に連通している板金加工したボンプ装置に おいて、 吸込ケーシングは吸込口の所で内方に延びる案内部分を有し、 その案内 部分はベンチュリチューブの内側に係合しており、 ベンチユリチューブの先端に 形成した段部には 0—リングが収納され、 その 0—リ ングの外側にストツバが設 けられていることを特徴とする板金加工したポンプ装置。 2 .- The motor consists of a body and a pump. The pump casing has an impeller that rotates by the motor. The suction port provided in the suction casing is connected to the inlet of the impeller via a venturi tube. In a communicating sheet metal stamping device, the suction casing has a guide portion extending inward at the suction port, the guide portion engaging the inside of the venturi tube and the bench lily tube. A pump device made of sheet metal, characterized in that a 0-ring is accommodated in a step formed at the tip, and a stop is provided outside the 0-ring.
3 . 一体に構成されたモータ部分とポンプ部分とよりなり、 ポンプケ一シング 内にモータにより回転する羽根車を備え、 羽根車とケ一シング部分との間にライ ナリ ングが設けられている板金加工したポンプ装置において、 ライナリ ングは高 圧側が開いている断面コ字状のライナリ ングを備え、 そのライナリ ングの半径方 向外方のフランジ部分はケーシング部分に形成した段部に取付けたライナリ ング ホルダに取付けられ、 その半径方向内方のフランジ部分にはリツプ部が設けられ、 半径方向外方のフランジ部分と半径方向内方のフラ ンジ部分とは適数のリブで連 結されていることを特徴とする板金加工したポンプ装置。 3. A sheet metal comprising a motor part and a pump part which are integrally formed, an impeller rotated by a motor in the pump casing, and a liner provided between the impeller and the casing part. In the machined pump device, the liner has a U-shaped cross-section liner with an open high-pressure side, and the radially outward flange portion of the liner is a liner attached to a step formed in the casing. Attached to the holder, its inner radial flange is provided with a lip, and the outer radial flange and the inner radial flange are connected by an appropriate number of ribs. A pump device processed by sheet metal.
4 . 一体に構成されたモータ部分とポンプ部分とよりなり、 ポンプケーシング 内にモータにより回転する羽根車を備え、 回転軸がカバーケーシングで支持され たメ力二カルシールでシールされている板金加工したポンプ装置において、 羽根 車には空気抜穴が穿設され、 羽根車は回転軸に取付けたボス部に取付けられ、 前
記空気抜穴は前記ボス部の半径方向外方に拡がるフランジで部分的に覆われてい ることを特徴とする板金加工したポンプ装置。 4. A sheet metal processing machine consisting of a motor part and a pump part that are integrally formed, an impeller that is rotated by the motor inside the pump casing, and a rotating shaft that is sealed with a mechanical seal supported by a cover casing. In the pump device, the impeller has an air vent hole, and the impeller is mounted on the boss mounted on the rotating shaft. The pump device according to claim 1, wherein the air vent hole is partially covered with a flange extending radially outward of the boss portion.
5 . 一体に構成されたモータ部分とポンプ部分とよりなり、 ポンプケーシング 内にモータにより回転する複数の羽根車を備え、 それらの羽根車の間はガイ ドべ ーンと通路カバ一とで区画されている板金加工したポンプ装置において、 前記ガ ィ ドベーンと通路カバーとの間に設けた整流用のブレー ドがガイ ドベーンに固着 されている板金加工したポンプ装置。 5. It consists of a motor part and a pump part that are integrally formed, and has a plurality of impellers that are rotated by a motor in a pump casing, and the space between these impellers is divided by a guide vane and a passage cover. The rectifying blade provided between the guide vane and the passage cover is fixed to the guide vane.
6 . —体に構成されたモータ部分とポンプ部分とよりなり、 ポンプケ一シング 内にモータにより回転する複数の羽根車を備え、 そして吸込口および吐出口が設 けられた板金加工したポンプ装置において、 最終段の羽根車の半径方向外方にボ リュートが形成され、 そのボリュ一トを介して吐出口が連通していることを特徴 とする板金加工したポンプ装置。
6 .—In a sheet metal-worked pump device comprising a motor portion and a pump portion formed on the body, a plurality of impellers rotated by a motor in a pump casing, and a suction port and a discharge port are provided. A pump device formed by sheet metal processing, wherein a volute is formed radially outward of the last stage impeller, and a discharge port communicates through the volute.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU51382/98A AU5138298A (en) | 1997-12-08 | 1997-12-08 | Pumping device formed by sheet-metal working |
PCT/JP1997/004484 WO1999030040A1 (en) | 1997-12-08 | 1997-12-08 | Pumping device formed by sheet-metal working |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP1997/004484 WO1999030040A1 (en) | 1997-12-08 | 1997-12-08 | Pumping device formed by sheet-metal working |
Publications (1)
Publication Number | Publication Date |
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WO1999030040A1 true WO1999030040A1 (en) | 1999-06-17 |
Family
ID=14181604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1997/004484 WO1999030040A1 (en) | 1997-12-08 | 1997-12-08 | Pumping device formed by sheet-metal working |
Country Status (2)
Country | Link |
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AU (1) | AU5138298A (en) |
WO (1) | WO1999030040A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001165090A (en) * | 1999-12-13 | 2001-06-19 | Matsushita Electric Ind Co Ltd | Pump |
JP2022025504A (en) * | 2020-07-29 | 2022-02-10 | 株式会社荏原製作所 | Fluid machine |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS322427B1 (en) * | 1954-10-08 | 1957-04-19 | ||
JPS5594491U (en) * | 1978-12-25 | 1980-06-30 | ||
JPH02135698U (en) * | 1989-04-14 | 1990-11-13 | ||
JPH0547493U (en) * | 1991-11-22 | 1993-06-25 | 株式会社ユニシアジェックス | water pump |
JPH0699516A (en) * | 1992-09-22 | 1994-04-12 | Ube Nitto Kasei Co Ltd | Hollow sheet made of thermoplastic resin |
JPH0647999B2 (en) * | 1990-02-22 | 1994-06-22 | カーエスベー・アクチエンゲゼルシャフト | Sheet metal structure spiral wound casing |
JPH0718436B2 (en) * | 1990-12-25 | 1995-03-06 | 株式会社荏原製作所 | Steel plate intermediate casing and multi-stage pump using the intermediate casing |
-
1997
- 1997-12-08 WO PCT/JP1997/004484 patent/WO1999030040A1/en active Application Filing
- 1997-12-08 AU AU51382/98A patent/AU5138298A/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS322427B1 (en) * | 1954-10-08 | 1957-04-19 | ||
JPS5594491U (en) * | 1978-12-25 | 1980-06-30 | ||
JPH02135698U (en) * | 1989-04-14 | 1990-11-13 | ||
JPH0647999B2 (en) * | 1990-02-22 | 1994-06-22 | カーエスベー・アクチエンゲゼルシャフト | Sheet metal structure spiral wound casing |
JPH0718436B2 (en) * | 1990-12-25 | 1995-03-06 | 株式会社荏原製作所 | Steel plate intermediate casing and multi-stage pump using the intermediate casing |
JPH0547493U (en) * | 1991-11-22 | 1993-06-25 | 株式会社ユニシアジェックス | water pump |
JPH0699516A (en) * | 1992-09-22 | 1994-04-12 | Ube Nitto Kasei Co Ltd | Hollow sheet made of thermoplastic resin |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001165090A (en) * | 1999-12-13 | 2001-06-19 | Matsushita Electric Ind Co Ltd | Pump |
JP4517426B2 (en) * | 1999-12-13 | 2010-08-04 | パナソニック電工株式会社 | pump |
JP2022025504A (en) * | 2020-07-29 | 2022-02-10 | 株式会社荏原製作所 | Fluid machine |
Also Published As
Publication number | Publication date |
---|---|
AU5138298A (en) | 1999-06-28 |
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