JP2946014B2 - Vertical shaft pump shaft sealing device - Google Patents
Vertical shaft pump shaft sealing deviceInfo
- Publication number
- JP2946014B2 JP2946014B2 JP25564293A JP25564293A JP2946014B2 JP 2946014 B2 JP2946014 B2 JP 2946014B2 JP 25564293 A JP25564293 A JP 25564293A JP 25564293 A JP25564293 A JP 25564293A JP 2946014 B2 JP2946014 B2 JP 2946014B2
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- shaft sealing
- main shaft
- chamber
- filter member
- 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.)
- Expired - Fee Related
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Sealing Devices (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は立軸ポンプの軸封装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft sealing device for a vertical shaft pump.
【０００２】[0002]
【従来の技術】従来より、図３に示す主軸１に固着した
羽根車２が羽根車室３に回転自在に収容され、この羽根
車室３の下流側に揚水管４Ａと吐出しエルボ４Ｂを備え
た吐出系４が連設され、この吐出系４の吐出しエルボ４
Ｂを貫通して主軸１が外部に導出された立軸ポンプにお
いて、主軸１を回転自在かつ液密に軸封する軸封装置５
として、たとえば、図４に示すように、主軸１を取り囲
んで吐出しエルボ４Ｂの貫通部４ｂに接続したスタフイ
ングボックス（軸封ボックス）５０と、このスタフイン
グボックス５０のパッキン室（軸封室）５１に装入され
た複数のグランドパッキンによってなる軸封部材５２を
備え、この軸封部材５２をパッキン押え５３によって軸
方向に押圧付勢することで、軸封部材５２の内周面を主
軸１の外周に摺接させた構造、あるいは、図５に示すよ
うに、軸封ボックス５０の軸封室５１に装入されたセグ
メントシールによってなる軸封部材５２を備え、この軸
封部材５２を押え板５３によって押圧固定することで、
軸封部材５２の内周面を主軸１の外周に摺接させた構造
が知られている。2. Description of the Related Art Conventionally, an impeller 2 fixed to a main shaft 1 shown in FIG. 3 is rotatably accommodated in an impeller chamber 3, and a pumping pipe 4A and a discharge elbow 4B are provided downstream of the impeller chamber 3. A discharge elbow 4 of the discharge system 4.
A shaft sealing device 5 for rotatably and liquid-tightly sealing the main shaft 1 in a vertical shaft pump in which the main shaft 1 is led out to the outside through B.
For example, as shown in FIG. 4, a stuffing box (shaft sealed box) 50 surrounding the main shaft 1 and connected to the through portion 4b of the discharge elbow 4B, and a packing chamber (shaft sealed chamber) of the stuffing box 50 A) a shaft sealing member 52 composed of a plurality of gland packings inserted into the shaft 51. The shaft sealing member 52 is pressed and urged in the axial direction by a packing presser 53, so that the inner peripheral surface of the shaft sealing member 52 is 5, or a shaft sealing member 52 made of a segment seal inserted in a shaft sealing chamber 51 of a shaft sealing box 50, as shown in FIG. By pressing and fixing with the holding plate 53,
A structure in which the inner peripheral surface of the shaft sealing member 52 is slidably contacted with the outer periphery of the main shaft 1 is known.
【０００３】しかし、これら従来の軸封装置５では、図
４および図５において矢印Ａで示すように、揚水に混入
しているゴミやスラリーなどの異物が、軸封室５１の底
壁に形成した主軸挿通孔５１Ａの内周と主軸１の外周と
の間に形成される環状の隙間５４を通って、軸封部材５
２と主軸１の摺接部５５に侵入し、主軸１よりも軟質の
軸封部材５２を比較的短期間で摩耗させる。その結果、
シール性の低下により漏水する懸念がある。However, in the conventional shaft sealing device 5, as shown by an arrow A in FIGS. 4 and 5, foreign matters such as dust and slurry mixed in the pumping water are formed on the bottom wall of the shaft sealing chamber 51. The shaft sealing member 5 passes through an annular gap 54 formed between the inner periphery of the main shaft insertion hole 51A and the outer periphery of the main shaft 1.
2 penetrates into the sliding contact portion 55 between the main shaft 1 and wears the shaft sealing member 52 that is softer than the main shaft 1 in a relatively short period of time. as a result,
There is a concern that water leaks due to a decrease in sealing performance.
【０００４】このような問題は、メカニカルシールを採
用することによって軽減することができる。しかし、メ
カニカルシール自体、構造が比較的複雑でコスト高にな
るとともに、立軸ポンプの気中運転（ドライ運転）時に
は、揚水による潤滑を期待できないので、ドライ運転時
に潤滑水を供給する注水装置を別途設けなければなら
ず、構造の複雑化とコスト高を一層増大させる難点を有
している。[0004] Such a problem can be reduced by adopting a mechanical seal. However, the mechanical seal itself has a relatively complicated structure and is costly, and lubrication by pumping cannot be expected during the vertical operation of the vertical pump (dry operation). This has the disadvantage that the structure is complicated and the cost is further increased.
【０００５】[0005]
【発明が解決しようとする課題】解決しようとする問題
点は、従来の立軸ポンプの軸封装置では、軸封部材が比
較的短期間で摩耗しシール性の低下により漏水する懸念
がある点であり、軸封装置をメカニカルシールによって
構成すると、注水装置を別途設けなけらならず、構造面
および価格面で不利な点である。The problem to be solved is that, in the shaft sealing device of the conventional vertical shaft pump, the shaft sealing member is worn in a relatively short period of time, and there is a concern that water leaks due to deterioration of sealing performance. If the shaft sealing device is constituted by a mechanical seal, a water injection device must be separately provided, which is disadvantageous in terms of structure and cost.
【０００６】[0006]
【課題を解決するための手段】本発明は、主軸に固着し
た羽根車が羽根車室に回転自在に収容され、この羽根車
室の下流側に連設した吐出系を貫通して前記主軸が外部
に導出され、該吐出系の貫通部に前記主軸を取り囲む軸
封ボックスが連設されているとともに、この軸封ボック
スの軸封室に装入されている軸封部材により前記主軸を
回転自在かつ液密に軸封する立軸ポンプの軸封装置にお
いて、前記軸封部材がドライ運転可能な素材によって形
成され、前記軸封ボックスの軸封室よりも上流側に前記
吐出系から軸封ボックス内への揚水の透過を許し、その
揚水に混入されている異物を捕集して軸封部材と主軸と
の摺接部への異物の侵入を阻止するフイルター部材が前
記主軸を貫通して設けられているとともに、このフイル
ター部材の少なくとも主軸貫通部に対応する前記主軸の
外周に該主軸と同時に回転することによって前記軸封ボ
ックスの軸封室側から前記吐出系側に水を送り出すスク
リュー部が設けられていることを特徴とし、簡単な構造
によって軸封部材の摩耗を抑え、シール性の低下を避け
て漏水を防止するとともに、ドライ運転を可能にして注
水装置の設置を省略する目的を達成した。According to the present invention, an impeller fixed to a main shaft is rotatably housed in an impeller chamber, and the impeller passes through a discharge system provided downstream of the impeller chamber. A shaft-sealing box that extends to the outside and surrounds the main shaft is connected to a penetrating portion of the discharge system, and the main shaft is rotatable by a shaft-sealing member that is inserted into a shaft-sealing chamber of the shaft-sealing box. In the shaft sealing device of a vertical shaft pump that seals the shaft in a liquid-tight manner, the shaft sealing member is formed of a material that can be operated in a dry state, and the shaft is sealed from the discharge system upstream of the shaft sealing chamber of the shaft sealing box. To allow the pumping of water to
Foreign matter mixed in the pumping water is collected and the shaft sealing
With filter member for preventing foreign material from entering the sliding contact portion is provided through the main shaft, the main shaft simultaneously rotating the outer periphery of the main shaft corresponding to at least the main shaft penetrating portion of the filter member A screw portion for sending water from the shaft sealing chamber side of the shaft sealing box to the discharge system side is provided, and the wear of the shaft sealing member is suppressed by a simple structure, and a decrease in sealing performance is avoided. We achieved the purpose of preventing water leakage, enabling dry operation, and omitting installation of a water injection device.
【０００７】[0007]
【作用】本発明によれば、羽根車の回転によって羽根車
室から吐出系に吐出された揚水の一部は、フイルター部
材を透過して軸封ボックスの軸封室に取込まれ、軸封部
材と主軸の摺接部を潤滑する。このとき、揚水に混入し
ているゴミやスラリーなどの異物は、フイルター部材に
よって捕集されるので、軸封部材と主軸の摺接部に異物
が侵入することはない。また、主軸およびスクリュー部
の回転によってフイルター部材の少なくとも主軸貫通部
に、軸封ボックスの軸封室に流入した水を軸封室側から
吐出系側に送り出す流れ、つまり吐出系から前記主軸貫
通部を通って直接軸封ボックスに流入しようとする揚水
の流れを抑える流れが発生する。したがって、前記異物
を含んでいる揚水の一部がフイルター部材を透過せず、
主軸貫通部を通って直接軸封ボックスに流入することは
ない。しかも、万一、異物がフイルター部材を透過して
軸封ボックス内に流入したとしても、前述の軸封ボック
スの軸封室側から吐出系側に送り出す水の流れにより、
軸封室内に流入した異物を吐出系に排出することができ
る。一方、異物がフイルター部材によって捕集されるこ
とで、経時によりフイルター部材に目詰まりを生じて揚
水による軸封部材と主軸の摺接部の潤滑機能が低下した
としても、軸封部材がドライ運転可能な素材（たとえば
合成樹脂）によって形成されているので、支障を来たす
ことなくポンプの運転を継続できるとともに、ドライ運
転時において前記摺接部に潤滑水を供給しなくてもよ
い。According to the present invention, a part of the pumped water discharged from the impeller chamber to the discharge system by the rotation of the impeller passes through the filter member and is taken into the shaft sealing chamber of the shaft sealing box. Lubricate the sliding contact between the member and the spindle. At this time, foreign matter such as dust and slurry mixed in the pumped water is collected by the filter member, so that the foreign matter does not enter the sliding portion between the shaft sealing member and the main shaft. Further, at least in the main shaft penetrating portion of the filter member by the rotation of the main shaft and the screw portion, a flow of sending water flowing into the shaft sealing chamber of the shaft sealing box from the shaft sealing chamber side to the discharge system side, that is, the main shaft penetrating portion from the discharge system. A flow is generated that suppresses the flow of the pumping water that is going to flow directly into the shaft seal box. Therefore, part of the pumping water containing the foreign matter does not pass through the filter member,
It does not flow directly into the shaft sealing box through the main shaft penetration. Moreover, even if foreign matter passes through the filter member and flows into the shaft sealing box , the water flows out from the shaft sealing chamber side of the shaft sealing box to the discharge system side,
It can be discharged foreign matters flowing into the shaft seal chamber to a discharge system. On the other hand, even if foreign substances are collected by the filter member, the filter member may be clogged with time and the lubricating function of the sliding contact portion between the shaft sealing member and the main shaft due to water pumping may be reduced. Since the pump is made of a possible material (for example, synthetic resin), the operation of the pump can be continued without any trouble, and the lubricating water does not need to be supplied to the sliding contact portion during the dry operation.
【０００８】[0008]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。なお、本発明の特徴は立軸ポンプの軸封装置にあ
り、その他の構造は図３の立軸ポンプと異ならないの
で、同一もしくは相当部分には同一符号を付して詳しい
説明を省略する。図１は本発明の要部を示す拡大縦断面
図であり、この図において、軸封ボックス５０の軸封室
５１には、合成樹脂などのドライ運転可能な素材によっ
て形成されたセグメントシール構造の軸封部材５２が装
入されている。この軸封部材５２は押え板５３によって
押圧固定されるとともに、その内周面を主軸１の外周に
取付けられて主軸１と同時に回転する軸スリ−ブ１Ａの
外周に摺接させている。Embodiments of the present invention will be described below with reference to the drawings. The feature of the present invention resides in the shaft sealing device of the vertical shaft pump, and the other structure is not different from that of the vertical shaft pump of FIG. 3, so the same or corresponding parts are denoted by the same reference numerals and detailed description is omitted. FIG. 1 is an enlarged longitudinal sectional view showing a main part of the present invention. In this figure, a shaft sealing chamber 51 of a shaft sealing box 50 has a segment seal structure formed of a dry operable material such as a synthetic resin. The shaft sealing member 52 is inserted. The shaft sealing member 52 is pressed and fixed by a pressing plate 53, and its inner peripheral surface is attached to the outer periphery of the main shaft 1 and slidably contacts the outer periphery of a shaft sleeve 1A which rotates simultaneously with the main shaft 1.
【０００９】一方、軸封ボックス５０の入口に環状のフ
イルター部材６が主軸１を貫通して取付けられていると
ともに、この環状のフイルター部材６の主軸貫通部６Ａ
付近の上流側（吐出しエルボ４Ｂの貫通部４ｂ側）およ
び下流側（軸封ボックス５０の軸封室５１側）に対応す
る主軸１の外周に、ねじスリーブによってなるスクリュ
ー部７が主軸１と同時回転可能に取付けられている。こ
のスクリュー部７は、自己の回転によって軸封ボックス
５０側から吐出しエルボ４Ｂの貫通部４ｂ側に水を送り
出すねじ溝、つまり主軸１の回転方向の逆方向送りのね
じ溝によって構成されている。On the other hand, an annular filter member 6 is attached to the entrance of the shaft sealing box 50 so as to penetrate the main shaft 1, and a main shaft penetration portion 6A of the annular filter member 6 is provided.
On the outer periphery of the main shaft 1 corresponding to the upstream side (the side of the through-hole 4b of the discharge elbow 4B) and the downstream side (the side of the shaft-sealing chamber 51 of the shaft-sealing box 50), a screw portion 7 composed of a screw sleeve is provided. It is installed so that it can rotate simultaneously. The screw portion 7 is constituted by a screw groove that discharges water from the shaft sealing box 50 side by its own rotation and sends water to the penetrating portion 4b side of the elbow 4B, that is, a screw groove that is fed in the reverse direction of the rotation direction of the main shaft 1. .
【００１０】このような構成であれば、図３の羽根車２
の回転によって羽根車室３から吐出系４に吐出された揚
水の一部は、図１の矢印Ａで示すように、環状のフイル
ター部材６を透過して軸封ボックス５０の軸封室５１に
取込まれ、軸封部材５２と軸スリ−ブ１Ａの摺接部５５
を潤滑する。このとき、揚水に混入しているゴミやスラ
リーなどの異物は、環状のフイルター部材６によって捕
集されるので、軸封部材５２と軸スリ−ブ１Ａの摺接部
５５に異物が侵入することはない。したがって、異物に
よる軸封部材５２の摩耗が抑えられ、シール性の低下を
避けて漏水を防止することができる。With such a configuration, the impeller 2 shown in FIG.
A part of the pumped water discharged from the impeller chamber 3 to the discharge system 4 by the rotation of the shaft penetrates the annular filter member 6 as shown by an arrow A in FIG. The shaft sealing member 52 is slid into contact with the shaft sleeve 1A.
Lubricate. At this time, foreign matter such as dust and slurry mixed in the pumped water is collected by the annular filter member 6, so that foreign matter enters the sliding contact portion 55 between the shaft sealing member 52 and the shaft sleeve 1A. There is no. Therefore, abrasion of the shaft sealing member 52 due to foreign matter is suppressed, and it is possible to prevent water leakage while preventing a decrease in sealing performance.
【００１１】また、主軸１と同時にスクリュー部７が回
転することによって、主軸貫通部６Ａに矢印Ｂで示す流
れ、つまり軸封ボックス５０の軸封室５１内に侵入した
揚水を吐出しエルボ４Ｂの貫通部４ｂ側に送り出す流れ
が発生する。その結果、吐出しエルボ４Ｂの貫通部４ｂ
側から主軸貫通部６Ａを通って直接軸封ボックス５０に
流入しようとする揚水の流れ（矢印Ｃ）が抑えられる。
したがって、異物を含んでいる揚水の一部が主軸貫通部
６Ａを通って直接軸封ボックス５０に流入することはな
い。このような作用によっても、軸封部材５２と軸スリ
−ブ１Ａの摺接部５５に異物が侵入する不都合を防止で
きる。しかも、万一、異物がフイルター部材６を透過し
て軸封ボックス５０の軸封室５１内に流入したとして
も、軸封室５１側から吐出しエルボ４Ｂの貫通部４ｂ側
に送り出される矢印Ｂの流れにより、軸封室５１内に流
入した異物を吐出しエルボ４Ｂ側に排出できるので、異
物が軸封部材５２と軸スリ−ブ１Ａの摺接部５５に侵入
することはない。Further, by the main shaft 1 at the same time as the screw portion 7 is rotated, the flow indicated by the arrow B to the main shaft through portion 6A, i.e. ejecting pumping that has entered the shaft seal chamber 51 of the shaft seal box 50 of the elbow 4B The flow which sends out to the penetration part 4b side arises. As a result, the penetrating portion 4b of the discharge elbow 4B
The flow (arrow C) of pumping water that is going to flow directly into the shaft sealing box 50 from the side through the main shaft penetration portion 6A is suppressed.
Therefore, a part of the pumping water containing the foreign matter does not flow directly into the shaft sealing box 50 through the main shaft through portion 6A. Even with such an operation, it is possible to prevent the inconvenience of foreign matter from entering the sliding contact portion 55 between the shaft sealing member 52 and the shaft sleeve 1A. Moreover, the event, even if flowed into the shaft seal chamber 51 of the shaft seal box 50 foreign matter passes through the filter member 6, out feed to the through portion 4b side of the elbow 4B discharged from the shaft seal chamber 51 side the flow arrows B, so can be discharged to the elbow 4B side discharge foreign matter which has flowed into the shaft seal chamber 51, different
An object does not enter the sliding contact portion 55 between the shaft sealing member 52 and the shaft sleeve 1A.
【００１２】一方、異物が環状のフイルター部材６によ
って捕集されることで、経時により環状のフイルター部
材６に目詰まりを生じて揚水による軸封部材５２と軸ス
リ−ブ１Ａの摺接部５５の潤滑機能が低下したとして
も、軸封部材５２が合成樹脂などのドライ運転可能な素
材によって形成されているので、支障を来たすことなく
ポンプの運転を継続できるとともに、ドライ運転時にお
いて摺接部５５に潤滑水を供給しなくてもよい。つま
り、ドライ運転時において摺接部５５に潤滑水を供給す
る注水装置の設置を省略できる。On the other hand, as the foreign matter is collected by the annular filter member 6, the annular filter member 6 is clogged with the passage of time, and the sliding contact portion 55 between the shaft sealing member 52 and the shaft sleeve 1A due to water pumping. Even if the lubrication function is reduced, the shaft sealing member 52 is made of a dry operable material such as a synthetic resin, so that the operation of the pump can be continued without any trouble, It is not necessary to supply lubricating water to 55. That is, it is possible to omit the installation of the water injection device for supplying the lubricating water to the sliding portion 55 during the dry operation.
【００１３】図２は環状のフイルター部材６の変形例を
示し、内周の主軸貫通部６Ａ側を外周部よりも吐出しエ
ルボ４Ｂの貫通部４ｂ側、つまり下側に膨出させてフイ
ルター面を下向きに傾斜さている。このような環状のフ
イルター部材６を使用することで、フイルター部材６を
透過して軸封ボックス５０内に流入した異物が主軸貫通
部６Ａ側に移動し易くなり、軸封ボックス５０側から吐
出しエルボ４Ｂ側への異物の排出が一層容易になる。FIG. 2 shows a modification of the annular filter member 6, wherein the main shaft penetrating portion 6A on the inner periphery is discharged from the outer peripheral portion to swell toward the penetrating portion 4b of the elbow 4B, that is, the filter surface is expanded downward. Is inclined downward. By using such an annular filter member 6, the foreign matter that has penetrated the filter member 6 and flowed into the shaft sealing box 50 can easily move to the main shaft penetrating portion 6A side, and is discharged from the shaft sealing box 50 side. Discharge of foreign matter to the elbow 4B side is further facilitated.
【００１４】なお、前記実施例では、軸封部材５２の内
周面を主軸１の外周に取付けた軸スリ−ブ１Ａの外周に
摺接させた構成で説明しているが、軸スリ−ブ１Ａの使
用を省略し、軸封部材５２の内周面を主軸１の外周に摺
接させた構成であってもよい。また、ねじスリーブによ
ってなるスクリュー部７を主軸１に対して同時回転可能
に取付けた構成で説明しているが、主軸１の外周にスク
リュー部７を切削加工によって形成した構成であっても
よい。In the above-described embodiment, the inner peripheral surface of the shaft sealing member 52 is described as being in sliding contact with the outer periphery of the shaft sleeve 1A mounted on the outer periphery of the main shaft 1. However, the shaft sleeve has been described. 1A may be omitted, and the inner peripheral surface of the shaft sealing member 52 may be slid on the outer periphery of the main shaft 1. Further, the configuration has been described in which the screw portion 7 made of a screw sleeve is attached to the main shaft 1 so as to be rotatable at the same time, but the screw portion 7 may be formed on the outer periphery of the main shaft 1 by cutting.
【００１５】[0015]
【発明の効果】以上説明したように、本発明は、揚水の
一部を軸封室内に取込んで軸封部材と主軸との摺接部を
潤滑しつつ、その揚水に混入しているゴミやスラリーな
どの異物を環状のフイルター部材によって捕集できるの
で、軸封部材と主軸の摺接部に異物が侵入することはな
い。また、吐出系から主軸貫通部を通って直接軸封ボッ
クスに流入しようとする揚水の流れを、スクリュー部の
回転によって生じる軸封ボックス側から吐出系側に送り
出す流れにより抑えるので、異物を含んでいる揚水の一
部が環状のフイルター部材を透過せず、主軸貫通部を通
って直接軸封ボックスに流入することもない。しかも、
万一、異物がフイルター部材を透過して軸封ボックス内
に流入したとしても、軸封ボックスの軸封室内に流入し
た異物を前述のスクリュー部の回転によって生じる流れ
により吐出系に排出することができる。そのために、簡
単な構造によって軸封部材の摩耗を抑え、シール性の低
下を避けて漏水を防止することが可能になる。その上、
軸封部材がドライ運転可能な素材によって形成されてい
るので、異物が環状のフイルター部材によって捕集され
ることに伴い経時により環状のフイルター部材に目詰ま
りを生じて揚水による軸封部材と主軸の摺接部の潤滑機
能が低下したとしても、何等支障を来たすことなくポン
プの運転を継続できるとともに、ドライ運転時において
前記摺接部に潤滑水を供給しなくてもよい。つまり、注
水装置の設置を省略できるから構造面および価格面で有
利である。As described above, the present invention provides pumping
Part is taken into the shaft sealing chamber and the sliding contact between the shaft sealing member and the spindle is
While lubricating , foreign matter such as dust and slurry mixed in the pumped water can be collected by the annular filter member, so that foreign matter does not enter the sliding contact portion between the shaft sealing member and the main shaft. In addition, since the flow of pumping water that is going to flow directly into the shaft sealing box from the discharge system through the main shaft penetration portion is suppressed by the flow generated by the rotation of the screw portion and sent out from the shaft sealing box side to the discharge system side, foreign matters are included. Part of the pumped water does not pass through the annular filter member and does not directly flow into the shaft sealing box through the main shaft penetration. Moreover,
Should foreign matter is even flowing into the shaft seal box through the filter member, to discharge the foreign matter that has flowed into the shaft seal chamber of the shaft seal box to the discharge system by the flow generated by the rotation of the screw portion of the above Can be. For this reason, it is possible to suppress wear of the shaft sealing member with a simple structure, to prevent a reduction in sealing performance, and to prevent water leakage. Besides ,
Since the shaft sealing member is formed by dry operable material, foreign matter of particular with shaft sealing member and the main shaft by pumping clogged the annular filter element over time is collected by an annular filter member Even if the lubrication function of the sliding contact portion is reduced, the operation of the pump can be continued without any trouble, and lubricating water does not need to be supplied to the sliding contact portion during the dry operation. That is, the installation of the water injection device can be omitted, which is advantageous in terms of structure and cost.
【図１】本発明の要部を示す拡大縦断面図である。FIG. 1 is an enlarged vertical sectional view showing a main part of the present invention.
【図２】環状のフイルター部材の変形例を示す部分断面
図である。FIG. 2 is a partial cross-sectional view showing a modification of the annular filter member.
【図３】本発明が適用される立軸ポンプの一例を示す概
略構成図である。FIG. 3 is a schematic configuration diagram showing an example of a vertical pump to which the present invention is applied.
【図４】従来の軸封装置の一例を示す拡大縦断面図であ
る。FIG. 4 is an enlarged vertical sectional view showing an example of a conventional shaft sealing device.
【図５】従来の軸封装置の他の例を示す拡大縦断面図で
ある。FIG. 5 is an enlarged vertical sectional view showing another example of the conventional shaft sealing device.
１ 主軸 ２ 羽根車 ３ 羽根車室 ４ 吐出系 ４ｂ 吐出系の貫通部 ５ 軸封装置 ６ 環状のフイルター部材（フイルター部材） ６Ａ 主軸貫通部 ５０ 軸封ボックス ５１ 軸封室 ５２ ドライ運転可能な軸封部材 Reference Signs List 1 spindle 2 impeller 3 impeller chamber 4 discharge system 4b discharge system penetrating portion 5 shaft sealing device 6 annular filter member (filter member) 6A main shaft penetrating portion 50 shaft sealing box 51 shaft sealing room 52 shaft seal capable of dry operation Element
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F04D 29/10 F16J 15/16 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) F04D 29/10 F16J 15/16
Claims (1)
自在に収容され、この羽根車室の下流側に連設した吐出
系を貫通して前記主軸が外部に導出され、該吐出系の貫
通部に前記主軸を取り囲む軸封ボックスが連設されてい
るとともに、この軸封ボックスの軸封室に装入されてい
る軸封部材により前記主軸を回転自在かつ液密に軸封す
る立軸ポンプの軸封装置において、前記軸封部材がドラ
イ運転可能な素材によって形成され、前記軸封ボックス
の軸封室よりも上流側に前記吐出系から軸封ボックス内
への揚水の透過を許し、その揚水に混入されている異物
を捕集して軸封部材と主軸との摺接部への異物の侵入を
阻止するフイルター部材が前記主軸を貫通して設けられ
ているとともに、このフイルター部材の少なくとも主軸
貫通部に対応する前記主軸の外周に該主軸と同時に回転
することによって前記軸封ボックスの軸封室側から前記
吐出系側に水を送り出すスクリュー部が設けられている
ことを特徴とする立軸ポンプの軸封装置。1. An impeller fixed to a main shaft is rotatably housed in an impeller chamber, and penetrates a discharge system provided downstream of the impeller chamber to lead the main shaft to the outside. A shaft sealing box surrounding the main shaft is continuously provided at the penetrating portion, and a vertical shaft rotatably and liquid-tightly seals the main shaft with a shaft sealing member inserted into a shaft sealing chamber of the shaft sealing box. In the shaft sealing device of the pump, the shaft sealing member is formed of a material that can be dry-operated, and the shaft is sealed from the discharge system upstream of the shaft sealing chamber of the shaft sealing box.
Foreign matter that is allowed to permeate the pumped water
A filter member that collects and prevents foreign matter from entering the sliding portion between the shaft sealing member and the main shaft is provided through the main shaft, and the filter member corresponding to at least the main shaft penetrating portion of the filter member is provided. Rotate around the main shaft at the same time as the main shaft
A shaft sealing device for a vertical shaft pump, wherein a screw portion for sending out water from the shaft sealing chamber side of the shaft sealing box to the discharge system side is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25564293A JP2946014B2 (en) | 1993-10-13 | 1993-10-13 | Vertical shaft pump shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25564293A JP2946014B2 (en) | 1993-10-13 | 1993-10-13 | Vertical shaft pump shaft sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07109995A JPH07109995A (en) | 1995-04-25 |
| JP2946014B2 true JP2946014B2 (en) | 1999-09-06 |
Family
ID=17281587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25564293A Expired - Fee Related JP2946014B2 (en) | 1993-10-13 | 1993-10-13 | Vertical shaft pump shaft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2946014B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949086B (en) * | 2017-02-27 | 2019-06-11 | 浙江大学 | A kind of combined mechanical sealing device |
| CN106884799A (en) * | 2017-03-22 | 2017-06-23 | 宜兴市宙斯泵业有限公司 | One kind centrifugation shurry pump rotating shaft lip-type packing |
| CN106870384A (en) * | 2017-03-22 | 2017-06-20 | 宜兴市宙斯泵业有限公司 | A kind of Centrifugal liquid pump |
| CN106870385A (en) * | 2017-03-22 | 2017-06-20 | 宜兴市宙斯泵业有限公司 | A kind of magnetic seals Centrifugal liquid pump |
-
1993
- 1993-10-13 JP JP25564293A patent/JP2946014B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07109995A (en) | 1995-04-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3589738A (en) | Mechanical seal for pulp pumps | |
| US4743034A (en) | Labyrinth bearing protector seal | |
| US4895460A (en) | Sealing for bearing assemblies | |
| US5921748A (en) | Centrifugal pump | |
| JPH0247314Y2 (en) | ||
| GB2254664A (en) | Barrier system for the lubricating oil for the bearings of a centrifugal compressor with labyrinth seals installed in a confined environment | |
| JP2946014B2 (en) | Vertical shaft pump shaft sealing device | |
| US4406465A (en) | Centrifugal pump | |
| US5772396A (en) | Pump having flush system for seal arrangement | |
| US6607196B2 (en) | Sealing washer | |
| KR101647553B1 (en) | Mud pump | |
| US6073934A (en) | Mechanical seal | |
| JP2829359B2 (en) | Vertical shaft pump shaft sealing device | |
| US3088415A (en) | Submersible pump | |
| JPS599367A (en) | Shaft sealing device | |
| GB2592179A (en) | Seal assembly | |
| US5944482A (en) | Front-removable bearing housing for vertical turbine pump | |
| US6533540B1 (en) | Double-seal/oil-reservoir system for a motor/pump assembly | |
| US5577886A (en) | Sealing device for pump impeller | |
| CA2144692C (en) | Sealing device for pump impeller | |
| JP2895180B2 (en) | Single mechanical seal type pump | |
| JP2006125278A (en) | Shaft seal device for submersible machine | |
| JPH0626486A (en) | Crushing pump | |
| RU2310773C2 (en) | Sheielding of bearing and seal unit from objectionable materials | |
| SU1149057A1 (en) | Suction dredge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |