JPS60173400A - Jet pump - Google Patents
Jet pumpInfo
- Publication number
- JPS60173400A JPS60173400A JP2997484A JP2997484A JPS60173400A JP S60173400 A JPS60173400 A JP S60173400A JP 2997484 A JP2997484 A JP 2997484A JP 2997484 A JP2997484 A JP 2997484A JP S60173400 A JPS60173400 A JP S60173400A
- Authority
- JP
- Japan
- Prior art keywords
- pressure water
- suction port
- main pipe
- discharge port
- jet pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/46—Arrangements of nozzles
- F04F5/466—Arrangements of nozzles with a plurality of nozzles arranged in parallel
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、地下水の汲揚げ、大型ポンプ起動時の満水
用、灰、砂、泥等の吸揚げ等に多く用いられるジェット
ポンプに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a jet pump that is often used for pumping up underground water, for filling up with water when starting a large pump, for sucking up ash, sand, mud, etc.
従来のこの種のジェットポンプとしては、例えば第1図
、第2図に示すようなものがある。Examples of conventional jet pumps of this type include those shown in FIGS. 1 and 2, for example.
第1図に示す例は、直管状の主管1に対して、その胴部
2途中部位からノズル3を差込み、主管lの吐出口4へ
接続したディフューザ5内に高圧水Wを噴射するように
している。そして、ノズル3からの高圧水Wの噴射によ
シ所定の総圧上昇を与え、吸込口8、吐出口4、ディフ
ューザ5を介して汚水等を揚水するものとなっている。In the example shown in FIG. 1, a nozzle 3 is inserted into a straight main pipe 1 from the middle of its body 2, and high-pressure water W is injected into a diffuser 5 connected to a discharge port 4 of the main pipe 1. ing. Then, a predetermined total pressure increase is given by the injection of high-pressure water W from the nozzle 3, and sewage or the like is pumped up through the suction port 8, the discharge port 4, and the diffuser 5.
第2図に示す例は、ベンド部Bを有する主管10に対し
、ベンド部Bに短管11を取付け、該短管11内に高圧
水W噴射用のノズル12を設けているものである。そし
て、上記第1図の例と同様にノズル12からの高圧水W
の噴射によシ、所定の総圧上昇を与え、吸込口14、吐
出口15、吐出管16を経て汚水等を揚水するものとな
っている。In the example shown in FIG. 2, a short pipe 11 is attached to the bend part B of a main pipe 10 having a bend part B, and a nozzle 12 for jetting high-pressure water W is provided in the short pipe 11. Then, as in the example shown in FIG.
A predetermined total pressure increase is given to the injection of water, and waste water or the like is pumped up through the suction port 14, the discharge port 15, and the discharge pipe 16.
しかしながら、もともとジェットポンプは2系統の水流
等を混合することからエネルギ損失が大きく、効率があ
まり良いものとはいえず〔一般に20〜25チといわれ
るが、高圧水Wの条件等によっては5チ以下のこともあ
る。〕、第1図の例にあっては、主管l中にノズル3が
突出していることによるエネルギ損失も加わってしまう
ため、これを解消すべくディフューザ5を必要とするこ
とになるという問題点があった。また第2図の例にあっ
ては、主管lo内へのノズル12の突出はないものの、
ベンド部Bにょるエネ′ルギ損失があり、効率の良化が
あ1り図れないというものであった。However, since jet pumps originally mix water streams from two systems, there is a large energy loss, and the efficiency cannot be said to be very good [generally said to be 20 to 25 inches, but depending on the conditions of the high-pressure water W, it may be possible to There are also the following. ], In the example shown in FIG. 1, energy loss is added due to the nozzle 3 protruding into the main pipe l, so there is a problem that a diffuser 5 is required to solve this problem. there were. Furthermore, in the example shown in Fig. 2, although the nozzle 12 does not protrude into the main pipe lo,
There was energy loss due to the bend part B, making it impossible to improve efficiency.
更に、第1図、第2図の両側ともに、主管l。Furthermore, on both sides of FIGS. 1 and 2, the main pipe l.
10の中心軸線と、ノズル3.j2の中心軸線とが一致
していないと、効率が大幅に低下してしま、うというこ
とや、ディフューザ5中でゴミが詰まシ易いため、あま
p絞シの大きなものが使用できず、結局効率の大幅上昇
は望めないということもあった。10 and the nozzle 3. If the center axis of j2 does not match, the efficiency will be greatly reduced, and the diffuser 5 will be easily clogged with dust, so it will not be possible to use a large aperture. It was also said that a significant increase in efficiency could not be expected.
この発明は、上記従来の問題点に鑑みて為したもので、
効率が良く、シかも構造が簡単なジェットポンプの提供
を目的とするものである。This invention was made in view of the above-mentioned conventional problems.
The object of the present invention is to provide a jet pump that is highly efficient and has a simple structure.
そして具体的には、この発明に係るジェットポンプは、
直管状に吸込口と吐出口を備えた主管と、該主管の吸込
口近辺の胴部に複数本設けられ、主管の吐出側へ向いた
高圧水噴射用のノズルとから構成されている。Specifically, the jet pump according to the present invention is
It consists of a straight main pipe with a suction port and a discharge port, and a plurality of nozzles for high-pressure water injection directed toward the discharge side of the main pipe, which are provided in the body near the suction port of the main pipe.
以下、この発明の実施例を図面に基づいて説明する。第
3図は、この発明に係るジェットポンプの一実施例を示
す図であり、第4図は、第3図に示す実施例を用いた汚
泥吸湯げ装置を示す図である。Embodiments of the present invention will be described below based on the drawings. FIG. 3 is a diagram showing an embodiment of the jet pump according to the present invention, and FIG. 4 is a diagram showing a sludge suction and boiling device using the embodiment shown in FIG. 3.
まず構成を説明すると、図中20が主管で、略直管状に
吸込口21と吐出口22を備えている。高圧水Wtg射
用のノズル23は、主管2oの吸込口21近辺に複数設
けられており、主管2oの胴部24に配設する円環状の
高圧水導入管25に取付けてゎる。高圧水導入管25は
取付部材25 bを介して高圧ホース25 aに接続し
ている。First, the configuration will be described. In the figure, 20 is a main pipe, which has a substantially straight pipe shape and is provided with a suction port 21 and a discharge port 22. A plurality of nozzles 23 for injecting high-pressure water Wtg are provided near the suction port 21 of the main pipe 2o, and are attached to an annular high-pressure water introduction pipe 25 disposed in the body 24 of the main pipe 2o. The high-pressure water introduction pipe 25 is connected to a high-pressure hose 25a via a mounting member 25b.
主管20内の吸込口21と吐出口22との間の通路26
は、高圧水Wと吸込まれる汚水や汚泥等とを混合するチ
ャンバとなり、吐出口22がらノズルn取付は位置にか
けて逆テーパ状に断面拡開形状を呈している。ノズル2
3からの高圧水Wの噴射は、この通路26の側面26
a K沿うような状態で行なわれる。尚、図示の例では
高圧水Wの噴射方向と通路26の中心軸線のなす角αを
16°、通路26の側面26 aと中心軸線のなす角β
を14゜としている。尚、図中27は、連結用パイプ、
28は取付はボルトである。Passage 26 between the suction port 21 and the discharge port 22 in the main pipe 20
serves as a chamber for mixing the high-pressure water W with sucked sewage, sludge, etc., and the nozzle n has an inversely tapered cross-sectional shape extending from the discharge port 22 to the mounting position. Nozzle 2
The high-pressure water W from 3 is sprayed from the side surface 26 of this passage 26.
It is performed in such a way that it follows the lines a and K. In the illustrated example, the angle α between the injection direction of the high-pressure water W and the central axis of the passage 26 is 16°, and the angle β between the side surface 26 a of the passage 26 and the central axis is 16°.
is set to 14°. In addition, 27 in the figure is a connecting pipe,
28 is attached with bolts.
次に」二記の如く構成したジェットポンプを汚泥吸湯げ
装置に使用する場合の構成を説明する。Next, a configuration in which the jet pump configured as described in section 2 is used in a sludge suction and boiling device will be explained.
この場合、第4図に示すようにジェットポンプJPを連
結用パイプ27の下端に取付け、この連結用パイプ27
を汚泥吸湯げ装置の汚泥移送用ホース29へ取付りてい
る。そしてジェットポンプJPの各ノズル23に連結す
る高圧水導入管25と高圧水W発生用の多段ポンプ30
の吐出側とを高圧ホース25 aで接続している。尚、
図中31は高圧水用タンク、32は吸水管、33は制御
弁である。In this case, the jet pump JP is attached to the lower end of the connecting pipe 27 as shown in FIG.
is attached to the sludge transfer hose 29 of the sludge suction and boiling device. A high-pressure water introduction pipe 25 connected to each nozzle 23 of the jet pump JP and a multistage pump 30 for generating high-pressure water W
The high pressure hose 25a is connected to the discharge side of the high pressure hose 25a. still,
In the figure, 31 is a high-pressure water tank, 32 is a water suction pipe, and 33 is a control valve.
次に第4図の如く汚泥吸湯げ装置に取付けた状態で、第
3図の実施例に係るジェットポンプJPの作用を説明す
る。Next, the operation of the jet pump JP according to the embodiment shown in FIG. 3 will be explained with the jet pump JP installed in the sludge suction and boiling device as shown in FIG. 4.
まず、ジェン)VンプJPの吸込口21を、吸湯げるべ
き汚泥Fの上ヘセントし、多段ポンプ30を起動する。First, the suction port 21 of the V pump JP is placed above the sludge F to be sucked, and the multistage pump 30 is started.
多段ポンプ30によシ、高圧水用タンク31から引いた
水を高圧水Wとなし、適宜の制御手段によシ制御弁33
を開き、各高圧水導入管25を介して各ノズル23から
主管20の通路26内へ噴射する。The multi-stage pump 30 converts the water drawn from the high-pressure water tank 31 into high-pressure water W, and the control valve 33 uses appropriate control means.
is opened, and the water is injected from each nozzle 23 into the passage 26 of the main pipe 20 via each high-pressure water introduction pipe 25.
ノズル23から噴射さi′した高圧水Wf′i、通路2
6の側面26 aに沿って吐出口22側へ向い、その運
動エネルギによって吸込口21近辺に総圧上昇を与える
。このとき、ノズル23か通路26の中心軸線上でなく
周囲の胴部24へ設けであるため、通路26の円周部分
も中央部分に近い流速となり、通路26内の流速は略均
−なものとなる。High pressure water Wf'i injected from nozzle 23, passage 2
6 toward the discharge port 22 side, and its kinetic energy increases the total pressure near the suction port 21. At this time, since the nozzle 23 is provided not on the central axis of the passage 26 but on the surrounding body 24, the flow velocity in the circumferential part of the passage 26 is also close to that in the central part, and the flow velocity in the passage 26 is approximately equal. becomes.
汚泥Fは、吸込口2」から吸込まれ、通路26及びそれ
に続く連結用パイプ27、汚泥移送用ノくイブ29内で
高圧水Wと混合しつつ移送される。この際通路26内で
高圧水Wが側面26 aに沿って吐出口22側へ向かい
、通路26内に突出物もベンド部もなく、殆んど直線や
円滑な曲線による面のみなので、エネルギ損失を招く大
きな6′1τ】は発生せず、汚泥Fの移送は滞溜等なく
行なわれる。The sludge F is sucked in from the suction port 2'', and is transferred while being mixed with the high-pressure water W within the passage 26, the connecting pipe 27 following it, and the sludge transfer nozzle 29. At this time, the high-pressure water W in the passage 26 heads toward the discharge port 22 along the side surface 26a, and there is no protrusion or bend in the passage 26, and there are almost only straight or smooth curved surfaces, so there is no energy loss. A large amount of 6′1τ] that would lead to this does not occur, and the sludge F is transferred without stagnation or the like.
このジェットポンプは、多段ポンプの能力及び詰まりに
くさとの関係から、その大きさが3〜5インチのものが
経済的である。It is economical for this jet pump to have a size of 3 to 5 inches in view of the multistage pump's ability and resistance to clogging.
本発明に係るジェットポンプは、以上説明してきた如く
、その構成を、吸込口と吐出口を備えた直管状の主管の
胴部に、吐出口側を向いた高圧水噴射用ノズルを吸込口
の近辺で複数本設けるものとしたため、構造が簡単なも
のとなってゴミ詰ま夛等もなくなシ、内部にベンド部や
突出物がないためエネルギ損失が少なく効率の非常によ
いものとすることができるという効果がある。そして、
従来の同程度の容量のものに比べ吸込み流速が早くなり
、同程度の揚程のものに比べては吸込口の断面積を大き
くすることができ、図示の例によれば従来より12qb
程度の効率上昇が期待できるものとなる。捷だ図示の実
施例では全ノズルから畠圧水を噴射するものとしている
が、揚程カー犬きl場合には、数本のノズルからエアを
混入することにより、吸込効率を高め、吸込んだ汚泥等
に浮力を持たせるようにすることもできる。As explained above, the jet pump according to the present invention has a structure in which a high-pressure water injection nozzle facing the discharge port is attached to the body of a straight main pipe equipped with a suction port and a discharge port. Since multiple tubes are installed nearby, the structure is simple and there is no possibility of dirt clogging, and since there are no bends or protrusions inside, energy loss is reduced and the efficiency is very high. There is an effect that it can be done. and,
The suction flow rate is faster than conventional ones with the same capacity, and the cross-sectional area of the suction port can be made larger than with conventional ones with the same head.
A certain degree of efficiency improvement can be expected. In the illustrated embodiment, water is injected from all nozzles, but if the pumping height is small, air can be mixed in from several nozzles to increase the suction efficiency and reduce the amount of sludge that has been sucked in. It is also possible to make the objects have buoyancy.
第1図及び第2図は、従来のジェットポンプの断面図、
第3図は、この発明の一実施例を示す断面図、そして
第4図は、第3図の実施例を汚泥吸湯げ装置に用いた例
を示す説明図である。
20・・・主管 21・・・吸込口
22・・・吐出口 2;3・・・ノズル24・・・主管
の胴部 W・・・高圧水F・・・汚泥
出願人三幸株式会社
−第1図
第3図
第4図1 and 2 are sectional views of a conventional jet pump, FIG. 3 is a sectional view of an embodiment of the present invention, and FIG. 4 is a sectional view of the embodiment of FIG. It is an explanatory diagram showing an example used for a device. 20... Main pipe 21... Suction port 22... Discharge port 2; 3... Nozzle 24... Body of main pipe W... High pressure water F... Sludge applicant Sanko Co., Ltd. - No. Figure 1 Figure 3 Figure 4
Claims (1)
口近辺の胴部に主管の吐出口側へ向けて複数本設けられ
た高圧水噴射用のノズルとよシなるジェットポンプ。A jet pump that is different from a main pipe having a straight suction port and a discharge port, and a plurality of nozzles for high-pressure water injection provided in the body near the suction port of the main pipe toward the discharge port side of the main pipe.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2997484A JPS60173400A (en) | 1984-02-20 | 1984-02-20 | Jet pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2997484A JPS60173400A (en) | 1984-02-20 | 1984-02-20 | Jet pump |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS60173400A true JPS60173400A (en) | 1985-09-06 |
Family
ID=12290927
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2997484A Pending JPS60173400A (en) | 1984-02-20 | 1984-02-20 | Jet pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60173400A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62200200U (en) * | 1986-06-09 | 1987-12-19 | ||
JPS6345100U (en) * | 1986-09-11 | 1988-03-26 | ||
US5788464A (en) * | 1993-10-01 | 1998-08-04 | Gabelgaard; Keld | Downhole suction process and devices |
JP2019015286A (en) * | 2017-07-03 | 2019-01-31 | 裕司 阪本 | Jet twister pump |
-
1984
- 1984-02-20 JP JP2997484A patent/JPS60173400A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62200200U (en) * | 1986-06-09 | 1987-12-19 | ||
JPS6345100U (en) * | 1986-09-11 | 1988-03-26 | ||
US5788464A (en) * | 1993-10-01 | 1998-08-04 | Gabelgaard; Keld | Downhole suction process and devices |
JP2019015286A (en) * | 2017-07-03 | 2019-01-31 | 裕司 阪本 | Jet twister pump |
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