JPH02136590A - Screw pump - Google Patents
Screw pumpInfo
- Publication number
- JPH02136590A JPH02136590A JP28665088A JP28665088A JPH02136590A JP H02136590 A JPH02136590 A JP H02136590A JP 28665088 A JP28665088 A JP 28665088A JP 28665088 A JP28665088 A JP 28665088A JP H02136590 A JPH02136590 A JP H02136590A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- pump
- discharge
- port
- shaft
- 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
- 239000000126 substance Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 12
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
未発明は、輸送物、例えば、海底２発電所の取水口、湖
沼、河川１港湾などに堆積したヘドロなどの軟泥を輸送
する際に利用されるスクリュポンプに関するものである
。[Detailed Description of the Invention] [Industrial Application Field] The invention is applicable to the transportation of transported objects, for example, soft mud such as sludge accumulated in water intakes of two submarine power plants, lakes, rivers, and ports. The invention relates to screw pumps.
［従来の技術］
従来用いられていたスクリュポンプは、ねじ効果により
輸送物を送るという使われ方が多く、大粒径の異物を輸
送できるという半面、圧力が立ちにくいという特性があ
った。[Prior Art] Conventionally used screw pumps are often used to transport materials using the screw effect, and while they can transport large particle size foreign materials, they have the property of being difficult to build up pressure.
また、遠心ポンプは、ケーシングとインペラとの間の隙
間が小さく、圧力が立ちやすい半面、異物が詰まりやす
いという欠点があった。In addition, centrifugal pumps have a small gap between the casing and impeller, which makes it easy for pressure to build up, but it also has the disadvantage of being easily clogged with foreign matter.
［発明が解決しようとする課題］
したがって、従来のスクリュポンプにあっては、単にス
クリュポンプの取込口からその内部に輸送物を導入する
だけの構造であり、吐出圧は比較的小さく、高揚程もし
くは遠距離の輸送に不向きであるという欠点があった。[Problems to be Solved by the Invention] Therefore, conventional screw pumps have a structure in which the material to be transported is simply introduced into the screw pump from the intake port, and the discharge pressure is relatively small and the high The drawback was that it was unsuitable for long-distance transportation.
［課題を解決するための手段］
本発明に係るスクリュポンプは、一端に取込口、他端に
吐出口を有し、スクリュ軸を軸承する軸受を少なくとも
２個所以上設けたスクリュポンプにおいて、取込口から
吐出口に向かうにしたがって徐々にスクリュ直径を増加
するよう構成した。[Means for Solving the Problems] The screw pump according to the present invention has an intake port at one end, a discharge port at the other end, and is provided with at least two bearings for supporting the screw shaft. The screw diameter was configured to gradually increase from the inlet to the discharge port.
また、第２には、取込−以降の等径のスクリュコンベヤ
部と吐出側に向かって拡径するポンプ部とから構成され
るスクリュポンプとした。Second, the screw pump is composed of a screw conveyor section having an equal diameter from the intake side to the downstream side, and a pump section whose diameter increases toward the discharge side.
［作用］
本発明のスクリュポンプは、吸込口より吐出口に向かっ
てスクリュ直径が徐々に増加しているため、輸送物がス
クリュコンベヤ中で圧密されることなく吐出口へ向かい
、吐出口ではスクリュの直径が最大であるから、同一回
転数に対して周速が最大であり高い圧送力が得られる。[Function] Since the screw diameter of the screw pump of the present invention gradually increases from the suction port toward the discharge port, the conveyed material is not consolidated in the screw conveyor and goes to the discharge port, and the screw is not compressed at the discharge port. Since the diameter is the maximum, the circumferential speed is the maximum for the same number of rotations, and a high pumping force can be obtained.
しかも、途中のスクリュ直径も段階的でなく徐々に増加
しているので円滑な輸送物の流動が達成される。Moreover, since the diameter of the screw in the middle increases gradually rather than stepwise, smooth flow of the transported material is achieved.
また、吸込口以降は等径のスクリュであって吐出部のポ
ンプ部のみ拡径であっても吐出圧力を増大させることが
できる。Further, even if the screws are of equal diameter after the suction port and only the pump portion of the discharge portion is enlarged in diameter, the discharge pressure can be increased.
［実施例］
以下、図に示す実施例を用いて本発明の詳細な説明する
。[Example] Hereinafter, the present invention will be described in detail using examples shown in the drawings.
第１図〜第３図は本発明に係るスクリュポンプの１実施
例を示し、第１図は全体縦断面図、第２図は第１図のＩ
Ｉ −ＩＩ視要部外形図、第３図は他の実施例を示す全
体縦断面図である。1 to 3 show one embodiment of the screw pump according to the present invention, FIG. 1 is an overall longitudinal sectional view, and FIG. 2 is an I of FIG.
FIG. 3 is an overall vertical sectional view showing another embodiment.
スクリュポンプ１は、下端に取込口６を有するスクリュ
コンベヤ２と、これに連結される吐出部のポンプ３と、
駆動部としての油圧モータ４とから構成される。スクリ
ュコンベヤ２は、ポンプ３部の羽根３ａの軸３ｂと１体
的に形成されたスクリュ軸７に取付けられ取込口６から
吐出側に向かって次第に拡径されたスクリュ８と、この
スクリュ８を被覆するケーシング５、および、下端にお
いてスクリュ軸７を軸支する軸受９から成る。The screw pump 1 includes a screw conveyor 2 having an intake port 6 at the lower end, a pump 3 at a discharge section connected to this,
It is composed of a hydraulic motor 4 as a drive section. The screw conveyor 2 includes a screw 8 which is attached to a screw shaft 7 formed integrally with the shaft 3b of the vane 3a of the pump 3, and whose diameter gradually increases from the intake port 6 toward the discharge side, and this screw 8. It consists of a casing 5 that covers the screw shaft 7, and a bearing 9 that pivotally supports the screw shaft 7 at the lower end.
取込口６は、第２図に示すように、ケーシング５の下端
に長方形の形状に複数個等ピツチで穿孔されて形成され
る。As shown in FIG. 2, the intake ports 6 are formed by drilling a plurality of rectangular holes at the same pitch in the lower end of the casing 5.
一方、ポンプ３は、前記スクリュ軸７と１体的に形成さ
れた軸３ｂに取付けられ同じく吐出側に向かうにしたが
って拡径する羽根３ａと、この羽根３ａを覆い最下流で
膨満した円環部を有するケーシング３Ｃ１および、羽根
３ａと前記円環部の接線方向へ輸送物を吐出させる吐出
口１５とを有し、上流側、下流側ともフランジによって
スクリュコンベヤ２や輸送管（図示せず）と締結される
。On the other hand, the pump 3 includes a blade 3a that is attached to a shaft 3b integrally formed with the screw shaft 7 and whose diameter increases toward the discharge side, and an annular portion that covers the blade 3a and expands at the most downstream side. and a discharge port 15 for discharging the transported material in the tangential direction of the vane 3a and the annular portion, and is connected to the screw conveyor 2 and the transport pipe (not shown) by flanges on both the upstream and downstream sides. It is concluded.
また、ポンプ３の上部には、ポンプ軸３ｂとカップリン
グ１２で連結された軸１４を軸支する軸受１０があり、
この軸受ｌＯを貫通した軸１４をカップリング１１にて
連結し、ポンプの羽根３ａおよびスクリュコンベヤ２の
スクリュ８を１体的に駆動回転させる油圧ポンプ４が設
けられている。そして、ポンプ３内の輸送物が駆動部へ
侵入しないようカップリング１２の下部にメカニカルシ
ール１３が設けられている。Further, on the upper part of the pump 3, there is a bearing 10 that pivotally supports a shaft 14 connected to the pump shaft 3b by a coupling 12.
A hydraulic pump 4 is provided which connects a shaft 14 passing through the bearing 10 with a coupling 11 and drives and rotates the pump blades 3a and the screw 8 of the screw conveyor 2 as one unit. A mechanical seal 13 is provided at the lower part of the coupling 12 to prevent the transported material in the pump 3 from entering the drive section.
以上のように構成された本発明のスクリュポンプの作動
について次に説明する。The operation of the screw pump of the present invention constructed as above will be explained next.
まず、ヘドロなどの軟泥などを採取したい所望の場所へ
スクリュコンベヤ２を下にして静かに下降させ、海底に
到達したところで油圧ユニットの電源を入れて油圧モー
タ４を回転駆動する。輸送物は、スクリュコンベヤ２の
最丁部にある取込［コロを経由してスクリュコンベヤ２
内に入り、スクリュ８の回転に伴なって上昇し、やがて
ポンプ３に入るが、ここで、スクリュ軸７の方向から回
転の接線方向（円周方向）へ輸送物は方向転換して円環
状のケーシング３Ｃの接線方向に設けられた吐出口１５
より高い圧力で吐出される。First, the screw conveyor 2 is gently lowered to a desired location where soft mud such as sludge is to be collected, and when it reaches the seabed, the hydraulic unit is turned on and the hydraulic motor 4 is driven to rotate. The transported items are taken in at the end of the screw conveyor 2 [via the rollers, and transferred to the screw conveyor 2].
The material enters the interior, rises as the screw 8 rotates, and eventually enters the pump 3. At this point, the transported material changes direction from the direction of the screw shaft 7 to the direction tangential to the rotation (circumferential direction) and becomes an annular shape. A discharge port 15 provided in the tangential direction of the casing 3C
Discharged at higher pressure.
以上の輸送過程において、本発明のスクリュポンプ１に
おいては、スクリュコンベヤ２およびポンプ３とも、そ
のスクリュ８および羽根３ａは吐出側に向かってその直
径が徐々に拡径されているので、刻々その外周端では周
速が増加するため、吐出圧力が次第に増強されて、輸送
物は高い吐出圧力が付与されるのである。特に、ポンプ
３においては最下流側に膨満した円環状のケーシング形
状としているため、遠心ポンプと同一の遠心効果により
高い吐出圧力で輸送物を吐出する。しかも、急激にスク
リュ８および羽根３ａが拡径する訳ではないので、スク
リュポンプ１内の輸送物は円滑に無理なく流動する。と
同時に、ポンプ３の内部の羽ｆｆ１３ａとケーシング３
Ｃとの間には広い空間が確認されるので、異物による閉
塞や、それに伴なう機器損傷のトラブルを生じる恐れが
非常に少ない。In the above transportation process, in the screw pump 1 of the present invention, the diameter of the screw 8 and the blade 3a of both the screw conveyor 2 and the pump 3 gradually increases toward the discharge side, so that the outer circumference of the screw conveyor 2 and the pump 3 are gradually increased. Since the circumferential speed increases at the end, the discharge pressure is gradually increased, and a high discharge pressure is applied to the transported object. In particular, since the pump 3 has an annular casing shape that swells toward the most downstream side, the transported material is discharged at a high discharge pressure due to the same centrifugal effect as a centrifugal pump. Moreover, since the screw 8 and the blade 3a do not suddenly expand in diameter, the transported material within the screw pump 1 flows smoothly and without strain. At the same time, the blade ff13a inside the pump 3 and the casing 3
Since a wide space is confirmed between the device and the device C, there is very little risk of blockage by foreign objects and related troubles such as damage to the equipment.
また、第３図に示す他の実施例においては、スクリュコ
ンベヤ２は拡径とすることなく通常の等径のスクリュ８
を持つスクリュコンベヤ２とし、ポンプ３のみ羽根３ａ
を拡径としたもので、これによっても輸送物の吐出圧力
をある程度高めることができるので、比較的低揚程でか
つ近距離の場合に簡便に利用できる。Moreover, in another embodiment shown in FIG.
The screw conveyor 2 has a
This allows the discharge pressure of the transported object to be increased to a certain extent, so it can be easily used when the lift is relatively low and the distance is short.
また、第３図に示すように、逆止弁２０や排送管２１に
圧送空気注入管２２を分枝して設け、圧縮空気による混
気圧送装置として利用することができる。Further, as shown in FIG. 3, a pressurized air injection pipe 22 is branched from the check valve 20 and the exhaust pipe 21, and can be used as a mixed pumping device using compressed air.
なお１本実施例の逆止弁２０は圧縮空気の逆流を防止す
るために設けたもので、図示の状態は弁フラツプ２０ａ
が回転ビン２０ｂに回転自在に取伺けられ、輸送物のな
い時には重力により閉塞（図の実線状態）し、運転時に
は輸送物の圧力により開放（図の二点鎖線）状態となる
。Note that the check valve 20 of this embodiment is provided to prevent backflow of compressed air, and the illustrated state is the valve flap 20a.
is rotatably taken up by the rotating bin 20b, and when there is no object to be transported, it is closed by gravity (solid line in the figure), and during operation, it is opened by the pressure of the object to be transported (double-dashed line in the figure).
［発明の効果］
以上の通り１本発明によれば、スクリュコンベヤのスク
リュおよびポンプの羽根が吐出側に向かって次第に拡径
しているので、輸送物の吐出圧力を高めることができる
ので、高揚程または遠距離の輸送ができると同時に、大
塊物など異物によるスクリュポンプ内の閉塞トラブルが
非常に少ないという優れた効果を有する。また、第２の
発明においてもポンプの羽根の拡径により吐出圧力の増
加に寄与できる。[Effects of the Invention] As described above, according to the present invention, the diameter of the screw of the screw conveyor and the blades of the pump gradually expands toward the discharge side, so that the discharge pressure of the transported material can be increased. It has an excellent effect in that it can be transported over long distances or long distances, and at the same time, there is very little trouble in clogging the screw pump due to foreign objects such as large lumps. Furthermore, in the second aspect of the invention, the diameter of the pump blades can also be expanded to contribute to an increase in the discharge pressure.
第１図〜第３図は本発明の実施例を示し、第１図は全体
縦断面図、第２図は第１図のＩＩ −ＩＩ視要部外形図
、第３図は全体縦断面図である。
１・・・スクリュポンプ、
２・・・スクリュコンベヤ、 ３・・・ポンプ、４・
・・油圧モータ、 ５・・・ケーシング、６・
・・取込口、 ７・・・スクリュ軸、８・
・・スクリュ、 ９，１０・・・軸受、１１
．１２・・・カップリング、
１３・・・メカニカルシール、１４・・・軸Ｌ５・・・
吐出口、 ２０・・・逆止弁、２１・・・排
送管、 ２２・・・圧送空気注入管。
第１図1 to 3 show embodiments of the present invention, FIG. 1 is an overall vertical sectional view, FIG. 2 is an outline view of the main part seen from II-II in FIG. 1, and FIG. 3 is an overall vertical sectional view. It is. 1... Screw pump, 2... Screw conveyor, 3... Pump, 4...
...Hydraulic motor, 5...Casing, 6.
...Intake port, 7...Screw shaft, 8.
...Screw, 9,10...Bearing, 11
．． 12...Coupling, 13...Mechanical seal, 14...Shaft L5...
Discharge port, 20... Check valve, 21... Exhaust pipe, 22... Pressurized air injection pipe. Figure 1
Claims (2)
リュ軸を軸承する軸受を少なくとも２個所以上設けたス
クリュポンプにおいて、前記取込口と前記吐出口の間で
スクリュ直径を下流側に向かうにしたがって徐々に増加
させたことを特徴とするスクリュポンプ。(1) In a screw pump having an intake port at one end, a discharge port at the other end, and at least two bearings for supporting the screw shaft, the screw pump is provided between the intake port and the discharge port. A screw pump characterized in that its diameter gradually increases toward the downstream side.
リュ軸を軸承する軸受を少なくとも２個所以上設けたス
クリュポンプにおいて、取込口以降の等径のスクリュコ
ンベヤ部と吐出側に向かって拡径するポンプ部とから構
成されたことを特徴とするスクリュポンプ。(2) In a screw pump having an intake port at one end, a discharge port at the other end, and at least two bearings for supporting the screw shaft, a screw conveyor portion of equal diameter after the intake port and A screw pump characterized in that it is comprised of a pump part whose diameter increases toward the discharge side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28665088A JPH02136590A (en) | 1988-11-15 | 1988-11-15 | Screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28665088A JPH02136590A (en) | 1988-11-15 | 1988-11-15 | Screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02136590A true JPH02136590A (en) | 1990-05-25 |
Family
ID=17707173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28665088A Pending JPH02136590A (en) | 1988-11-15 | 1988-11-15 | Screw pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02136590A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003074486A (en) * | 2001-09-04 | 2003-03-12 | Toyo Denki Industrial Co Ltd | Conveying pump with hopper |
| JP2005270719A (en) * | 2004-03-23 | 2005-10-06 | Hitachi Kiden Kogyo Ltd | Sand lifting/conveying system in sand sedimentation basin |
| CN102359449A (en) * | 2011-10-07 | 2012-02-22 | 熊建华 | Mono screw pump with stirring and drainage functions for reaction kettle |
| CN102588349A (en) * | 2012-02-28 | 2012-07-18 | 中联重科股份有限公司 | Axial flow fan for exhausting air and dust in pipeline |
-
1988
- 1988-11-15 JP JP28665088A patent/JPH02136590A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003074486A (en) * | 2001-09-04 | 2003-03-12 | Toyo Denki Industrial Co Ltd | Conveying pump with hopper |
| JP2005270719A (en) * | 2004-03-23 | 2005-10-06 | Hitachi Kiden Kogyo Ltd | Sand lifting/conveying system in sand sedimentation basin |
| CN102359449A (en) * | 2011-10-07 | 2012-02-22 | 熊建华 | Mono screw pump with stirring and drainage functions for reaction kettle |
| CN102588349A (en) * | 2012-02-28 | 2012-07-18 | 中联重科股份有限公司 | Axial flow fan for exhausting air and dust in pipeline |
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