JPH0972428A - Shaft sealing device for vertical-shaft pump - Google Patents
Shaft sealing device for vertical-shaft pumpInfo
- Publication number
- JPH0972428A JPH0972428A JP22616695A JP22616695A JPH0972428A JP H0972428 A JPH0972428 A JP H0972428A JP 22616695 A JP22616695 A JP 22616695A JP 22616695 A JP22616695 A JP 22616695A JP H0972428 A JPH0972428 A JP H0972428A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- return
- lubricating water
- rotary cylinder
- seal
- 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.)
- Granted
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Mechanical Sealing (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自己保持した潤滑水で
摺動面を潤滑するようにした立軸ポンプ用軸封装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft seal device for a vertical shaft pump in which a sliding surface is lubricated with self-held lubricating water.
【０００２】[0002]
【従来の技術】雨水を排水する立軸ポンプの軸封装置に
おけるシール部材として耐摩耗性に優れたセラミックス
を用いた端面型セラミック軸封装置が使用されるように
なってきた。2. Description of the Related Art An end face type ceramic shaft sealing device using ceramics having excellent wear resistance has come to be used as a sealing member in a shaft sealing device of a vertical shaft pump for draining rainwater.
【０００３】その一方において、近年における急激な都
市化により排水機場への雨水の流入が大量且つ急激なも
のとなりつつあり、こうした状況に対応するために排水
ポンプを先行待機運転させる必要性が高まってきてい
る。ところが、このような先行待機運転に代表される気
中運転を行う立軸排水ポンプは、ポンプが起動して主軸
が回転しているにもかかわらず揚水されない気中運転状
態が３０分間以上もの長時間に亘って継続する場合があ
る。この間、軸封装置に対しては潤滑水が補給されない
ことになり、そのままでは軸封装置が摺動面潤滑のため
に自己保持している潤滑水が不足してドライ摺動による
異常摩耗が発生し、セラミック軸封装置を採用すること
が困難である。On the other hand, due to the rapid urbanization in recent years, the inflow of rainwater to the drainage pump station is becoming large and rapid, and in order to cope with such a situation, it becomes necessary to operate the drainage pump in advance standby. ing. However, such a vertical shaft drainage pump that performs an air operation represented by the preceding standby operation does not pump water even if the pump is started and the main shaft rotates, but the air operation state is a long time of 30 minutes or more. May continue over. During this time, the lubricating oil is not replenished to the shaft sealing device, and if it is left as it is, the lubricating oil that the shaft sealing device is holding for lubrication of the sliding surface is insufficient and abnormal wear occurs due to dry sliding. However, it is difficult to adopt a ceramic shaft sealing device.
【０００４】なお、この種の軸封装置としては、特開平
７−１２２３６号公報に記載されたものがある。An example of this type of shaft seal device is disclosed in Japanese Patent Laid-Open No. 7-12236.
【０００５】[0005]
【発明が解決しようとする課題】従来の立軸ポンプ用軸
封装置は、揚水した水を潤滑水として回転容器内に溜め
る構造になっていが、潤滑水の保持量を多くし且つ気中
運転時にこの潤滑水の消費量を軽減することにより長時
間の気中運転に耐えられるようにする配慮が不足してい
る。A conventional shaft seal device for a vertical shaft pump has a structure in which pumped water is stored as lubricating water in a rotary container. However, the amount of lubricating water retained is increased and the device is operated in the air. There is a lack of consideration to reduce the consumption of this lubricating water so that it can withstand long-time air operation.
【０００６】本発明の目的は、潤滑水の保持量を多くす
ると共に該潤滑水を有効に使用して長時間の気中運転に
耐えられる立軸ポンプ用軸封装置を提供することにあ
る。It is an object of the present invention to provide a shaft seal device for a vertical shaft pump which can hold a large amount of lubricating water and can effectively use the lubricating water to endure long-time air operation.
【０００７】[0007]
【課題を解決するための手段】本発明は、前記目的を達
成するために、軸封のための摺動部材であるシートリン
グとシールリングの外周を取り囲んで潤滑水保持室を形
成する回転筒の上縁から該回転筒の上部開口を覆うよう
に突出した返し板に該返し板の内周縁から外周部に向か
って伸びて該回転筒の内側に向けて開口する戻し水路を
形成したことを特徴とする。In order to achieve the above-mentioned object, the present invention provides a rotary cylinder which forms a lubricating water holding chamber by surrounding the outer circumferences of a seat ring and a seal ring which are sliding members for shaft sealing. A return water channel extending from the inner peripheral edge of the return plate toward the outer peripheral portion and opening toward the inside of the rotary cylinder is formed on the return plate protruding from the upper edge of the rotary cylinder so as to cover the upper opening of the rotary cylinder. Characterize.
【０００８】[0008]
【作用】潤滑水保持室はシートリングとシールリングの
周囲に多量の潤滑水を保持し、また、回転時の遠心力に
より上部開口から飛散しようとする潤滑水を返し板によ
り抑制すると共に該返し板の内周縁から漏出しようとす
る潤滑水を戻し水路の遠心ポンプ作用によって潤滑水保
持室の内側に押し戻す。The lubricating water holding chamber holds a large amount of lubricating water around the seat ring and the seal ring, and suppresses the lubricating water that tends to splash from the upper opening due to centrifugal force during rotation by the return plate and The lubricating water that is about to leak from the inner peripheral edge of the plate is pushed back into the lubricating water holding chamber by the centrifugal pump action of the returning water channel.
【０００９】[0009]
【実施例】以下、本発明の実施例を図面を用いて説明す
る。この実施例における立軸ポンプ用軸封装置は、シー
ル部材がセラミックスからなる軸封装置（以下、セラミ
ック軸封装置と呼ぶ）であり、雨水を排水するために先
行待機運転（気中運転）する排水ポンプの軸封装置とし
て搭載される。しかしながら、本発明の立軸ポンプ用軸
封装置のシール部材は、セラミックスのみに限定される
ものではない。Embodiments of the present invention will be described below with reference to the drawings. The shaft seal device for a vertical shaft pump in this embodiment is a shaft seal device in which a seal member is made of ceramics (hereinafter referred to as a ceramic shaft seal device), and drainage for performing a preliminary standby operation (in-air operation) to drain rainwater. It is installed as a shaft seal device for pumps. However, the seal member of the shaft sealing device for a vertical shaft pump of the present invention is not limited to ceramics.
【００１０】図１は、本発明になる立軸排水ポンプ軸封
装置の縦断側面図である。この軸封装置は、主軸１とポ
ンプケーシング７の間の隙間からの流体の漏れを防止す
る装置である。主軸１にはフランジ２が固定され、該フ
ランジ２の上面にはシートリング４を取り付けたケース
３ａが固定される。前記シートリング４に押接して摺動
させるシールリング５を保持したケース３ｂは、シール
ケース６にねじ止めして着脱可能に固定される。主軸１
とフランジ２を囲むように設けられたポンプケーシング
７の上端には環状カバー８が取付けられ、前記シールケ
ース６は該環状カバー８の内周端にＯリング９を介して
水密状態且つ上下方向摺動可能に取付けられる。コイル
ばね１０は、シールリング５をシートリング４に押接す
るようにシールケース６を押下する。なお、１３は、シ
ールケース６の内側からコイルばね１０及び該シールケ
ース６と環状カバー８の摺動部を覆うように伸びたダス
トカバーである。FIG. 1 is a vertical side view of a vertical shaft drainage pump shaft sealing device according to the present invention. This shaft sealing device is a device that prevents fluid from leaking from a gap between the main shaft 1 and the pump casing 7. A flange 2 is fixed to the main shaft 1, and a case 3a to which a seat ring 4 is attached is fixed to the upper surface of the flange 2. The case 3b, which holds the seal ring 5 that is pressed against the seat ring 4 and slides, is detachably fixed to the seal case 6 by screwing. Spindle 1
An annular cover 8 is attached to an upper end of a pump casing 7 provided so as to surround the flange 2 and the seal case 6 in a watertight state and vertically slidable on an inner peripheral end of the annular cover 8 via an O-ring 9. Mounted movably. The coil spring 10 pushes the seal case 6 so that the seal ring 5 is pressed against the seat ring 4. Reference numeral 13 is a dust cover extending from the inside of the seal case 6 so as to cover the coil spring 10 and the sliding portion between the seal case 6 and the annular cover 8.
【００１１】そして、シートリング４及びシールリング
５を支持するケース３ａ，３ｂとシールケース６の外周
側を取り囲むように前記フランジ２の外周端から起立さ
せて固定した回転筒１１は、ポンプによって汲上げられ
た揚水液を溜めて潤滑水として保持する潤滑水保持室１
１ａを形成する。この潤滑水保持室１１ａ内に保持した
潤滑水が主軸１の回転に伴う遠心力によって回転筒１１
の上部開口から飛散するのを抑制するために、該回転筒
１１の上縁から内側に向けて突出してシールケース６の
外周面に近接するように伸びて該上部開口を覆う環状の
返し板１２が設けられる。この返し板１２には、その内
周縁から外周部に向かって伸びて潤滑水保持室１１ａ内
に向けて開口する戻し水路１４が形成されている。１５
は、前記戻し水路１４の潤滑水保持室内側に向けた開口
の内側に設けた環状の案内壁で、戻し水路１４から潤滑
水保持室１１ａ内に戻された潤滑水を回転筒１１の内壁
面に沿って流下するように方向付けする。Then, the rotary cylinder 11 which is erected and fixed from the outer peripheral end of the flange 2 so as to surround the outer peripheral sides of the cases 3a and 3b supporting the seat ring 4 and the seal ring 5 and the outer peripheral side of the seal case 6 is pumped by a pump. Lubricating water holding chamber 1 for collecting the pumped-up liquid and holding it as lubricating water
1a is formed. The lubricating water held in the lubricating water holding chamber 11a is rotated by the centrifugal force generated by the rotation of the main shaft 1 to rotate the rotating cylinder 11
In order to suppress scattering from the upper opening of the rotary cylinder 11, an annular return plate 12 that projects inward from the upper edge of the rotary cylinder 11 and extends so as to be close to the outer peripheral surface of the seal case 6 and covers the upper opening. Is provided. The return plate 12 is formed with a return water passage 14 extending from the inner peripheral edge thereof toward the outer peripheral portion and opening toward the inside of the lubricating water holding chamber 11a. Fifteen
Is an annular guide wall provided inside the opening of the return water passage 14 toward the inside of the lubricating water holding chamber, and the lubricating water returned from the return water passage 14 into the lubricating water holding chamber 11 a is an inner wall surface of the rotary cylinder 11. Orient to run down along.
【００１２】この立軸排水ポンプ軸封装置において、揚
水時は、ポンプケーシング７内が揚水液で満たされ、回
転筒１１を越えた揚水液はシールケース６と返し板１２
の内周縁の間の隙間から潤滑水保持室１１ａ内に侵入し
て溜められ、シートリング４とシールリング５の摺動面
を潤滑する潤滑水となる。摺動面を潤滑しながら外周側
から内周側に通過した潤滑水（漏水）は、主軸１の外周
面とシールケース６内周面の間に形成された隙間を上昇
し、ダストカバー１３の上面に溢れ出て環状カバー８の
上面を外周側に流れる。漏水に含まれる土砂粒子は、該
漏水した流体と一緒に運ばれるのでシールケース６と環
状カバー８の間の摺動面に侵入してＯリング９を損傷す
ることがない。In this vertical shaft drainage pump shaft sealing device, when pumping water, the pump casing 7 is filled with pumping liquid, and the pumping liquid that has passed over the rotary cylinder 11 is sealed case 6 and return plate 12.
Lubricant water that enters and is stored in the lubrication water holding chamber 11a from the gap between the inner peripheral edges of the lubrication water serves to lubricate the sliding surfaces of the seat ring 4 and the seal ring 5. Lubricating water (water leakage) that has passed from the outer peripheral side to the inner peripheral side while lubricating the sliding surface rises in the gap formed between the outer peripheral surface of the main shaft 1 and the inner peripheral surface of the seal case 6, and the dust cover 13 It overflows to the upper surface and flows to the outer peripheral side on the upper surface of the annular cover 8. The earth and sand particles contained in the leaked water are carried together with the leaked fluid, so that they do not enter the sliding surface between the seal case 6 and the annular cover 8 and damage the O-ring 9.
【００１３】揚水が終了するとポンプケーシング７内の
水は落水するが、回転筒１１で囲まれた潤滑水保持室１
１ａ内には返し板１２の上面のレベルまで揚水液が溜め
らて潤滑水として保持される。なお、潤滑水保持室１１
ａ内の矢印は、排水ポンプの回転中における該潤滑水保
持室１１ａ内での揚水液（潤滑水）の循環方向を示して
いる。When the pumping is completed, the water in the pump casing 7 falls, but the lubricating water holding chamber 1 surrounded by the rotary cylinder 11
The pumped-up liquid is stored in 1a up to the level of the upper surface of the return plate 12 and is retained as lubricating water. The lubricating water holding chamber 11
The arrow in a indicates the circulation direction of the pumping liquid (lubricating water) in the lubricating water holding chamber 11a during rotation of the drainage pump.
【００１４】この立軸排水ポンプ軸封装置は、新規組立
て終了時に、最初の気中運転のための潤滑水を潤滑水保
持室１１ａに供給しておくが、その後は、排水ポンプの
揚水運転時の揚水液を自動的に補充して潤滑水として自
己保持し、該潤滑水で４と５の摺動面を潤滑する。シー
トリング４及びシールリング５を支持するケース３ａ，
３ｂとシールケース６の外周側を取り囲むようにフラン
ジ２の外周端から起立させた回転筒１１によって形成す
る潤滑水保持室１１ａは、比較的大きな容量に形成して
多量の潤滑水を保持することができる。This vertical shaft drainage pump shaft sealing device supplies the lubricating water for the first air operation to the lubricating water holding chamber 11a at the end of new assembly, but after that, after the drainage pump pumping operation, The pumped water is automatically replenished and self-held as lubricating water, and the lubricating water lubricates the sliding surfaces 4 and 5. A case 3a for supporting the seat ring 4 and the seal ring 5,
The lubricating water holding chamber 11a formed by the rotary cylinder 11 standing upright from the outer peripheral end of the flange 2 so as to surround the outer peripheral side of 3b and the seal case 6 should be formed to have a relatively large capacity to hold a large amount of lubricating water. You can
【００１５】潤滑水保持室１１ａ内に蓄えられた潤滑水
は、主軸１が回転するときに一緒に回転することにより
その遠心力によって回転筒１１の内壁面を伝って上昇す
る。上昇した潤滑水は、返し板１２に押えられて下側に
戻される。しかし、上部にある潤滑水の一部は、下部か
ら上昇する水によって押し出されて返し板１２を伝って
該返し板１２の内周縁とシールケース６の間の隙間から
溢れ出て回転筒１１の外に飛散しようとするが、該返し
板１２の外周縁に開口する戻し水路１４が該潤滑水を吸
い込んでその遠心力によるポンプ作用によって潤滑水保
持室１１ａ内に戻し、回転筒１１の内壁に沿って上昇し
てくる潤滑水の上昇を押え込むように下向きに噴出す
る。The lubricating water stored in the lubricating water holding chamber 11a rises along the inner wall surface of the rotary cylinder 11 due to the centrifugal force of the main spindle 1 as it rotates together with the main spindle 1. The rising lubricating water is pressed down by the return plate 12 and returned to the lower side. However, a part of the lubricating water in the upper part is pushed out by the water rising from the lower part, travels along the return plate 12 and overflows from the gap between the inner peripheral edge of the return plate 12 and the seal case 6, and the rotary cylinder 11 moves. Although returning to the outside, the return water passage 14 opening to the outer peripheral edge of the return plate 12 sucks the lubricating water and returns it into the lubricating water holding chamber 11a by the pumping action by its centrifugal force. It jets downward so as to suppress the rise of lubricating water that rises along it.
【００１６】従って、潤滑水保持室１１ａ内の潤滑水が
飛散して浪費するようなことが少なくなくなるので、長
時間の気中運転に対して確実な潤滑を維持することがで
き、より信頼性の高い軸封装置を実現することができ
る。Therefore, since the lubricating water in the lubricating water holding chamber 11a is often scattered and wasted, reliable lubrication can be maintained even during long-time air operation, and reliability is further improved. It is possible to realize a high shaft sealing device.
【００１７】次に、返し板１２に形成する戻し水路１４
の幾つかの実施例を図２〜図４を参照して説明する。Next, the return water channel 14 formed in the return plate 12
Some embodiments of the above will be described with reference to FIGS.
【００１８】図２に示す実施例は、返し板１２の厚み方
向中間部に該返し板１２の内周縁に開口する５ｍｍ程度
の環状の隙間１４ａを形成し、この隙間１４ａにおける
回転筒１１の壁面に近いところに潤滑水保持室１１ａ内
に向けて複数個の穴１４ｂを形成したものである。この
穴１４ｂは、５ｍｍ程度の直径の丸穴を等間隔に８個程
度形成すれば良い。In the embodiment shown in FIG. 2, an annular gap 14a of about 5 mm opening to the inner peripheral edge of the return plate 12 is formed in the middle portion in the thickness direction of the return plate 12, and the wall surface of the rotary cylinder 11 in this gap 14a. A plurality of holes 14b are formed in the location close to the inside toward the inside of the lubricating water holding chamber 11a. About this hole 14b, about eight round holes having a diameter of about 5 mm may be formed at equal intervals.
【００１９】図３に示す実施例は、返し板１２の内周縁
から外周部に向けて放射状に等間隔に形成した複数本の
丸穴１４ｃを回転筒１１の壁面に近いところで潤滑水保
持室１１ａに折り曲げることにより該潤滑水保持室１１
ａに向けて下向きに開口させたものである。In the embodiment shown in FIG. 3, a plurality of circular holes 14c radially formed from the inner peripheral edge of the return plate 12 toward the outer peripheral portion are formed at equal intervals, and the lubricating water holding chamber 11a is located near the wall surface of the rotary cylinder 11. The lubricating water holding chamber 11
It is opened downward toward a.
【００２０】図４に示す実施例は、返し板１２の内周縁
から外周部に向けて等間隔に形成する複数本の丸穴１４
ｄをポンプの回転方向に向けて湾曲させると共に回転筒
１１の壁面に近いところで潤滑水保持室１１ａに湾曲さ
せことにより該潤滑水保持室１１ａに向けて回転方向に
斜め下向きに開口させたものである。In the embodiment shown in FIG. 4, a plurality of round holes 14 are formed at equal intervals from the inner peripheral edge of the return plate 12 toward the outer peripheral portion.
d is curved toward the rotation direction of the pump and is curved toward the lubricating water holding chamber 11a at a position near the wall surface of the rotating cylinder 11 so that the lubricating water holding chamber 11a is opened obliquely downward toward the lubricating water holding chamber 11a. is there.
【００２１】このようにすれば、、丸穴１５ｄから潤滑
水保持室１１ａに噴出する戻し水は、より効果的に潤滑
水保持室１１ａ内の潤滑水の上昇を押えることができる
ようになる。In this way, the return water jetted from the round hole 15d to the lubricating water holding chamber 11a can more effectively suppress the rise of the lubricating water in the lubricating water holding chamber 11a.
【００２２】図５は、本発明になる立軸排水ポンプ軸封
装置の他の実施例を示す縦断側面図である。この軸封装
置は、シールケース６と返し板１２の内周縁の間の隙間
部分に段付け部材１６を設け、該隙間を通過しようとす
る潤滑水を返し板１２に形成した戻し水路１４に吸い込
み易くしたものである。その他の構成は、前述した実施
例と共通であるので同一の参照符号を付して重複する説
明は省略する。FIG. 5 is a vertical sectional side view showing another embodiment of the vertical shaft drainage pump shaft sealing device according to the present invention. In this shaft sealing device, a step member 16 is provided in the gap between the seal case 6 and the inner peripheral edge of the return plate 12, and the lubricating water that attempts to pass through the gap is sucked into the return water passage 14 formed in the return plate 12. It is made easier. Other configurations are the same as those in the above-described embodiment, and therefore, the same reference numerals are given and duplicated description will be omitted.
【００２３】この実施例における戻し水路１４は、段付
け部材１６に沿って後退させて段付きにした返し板１２
の内周縁の段部に臨んで開口する。従って、段付け部材
１６に沿って漏出しようとする潤滑水は戻し水路１４に
吸い込まれ易くなる。The return water channel 14 in this embodiment is a return plate 12 which is stepped back by retreating along the stepping member 16.
The opening faces the step of the inner peripheral edge of the. Therefore, the lubricating water that tends to leak along the stepped member 16 is easily sucked into the return water passage 14.
【００２４】図６は、本発明になる立軸排水ポンプ軸封
装置の更に他の実施例を示す縦断側面図である。この軸
封装置は、シールケース６に固定した補助容器１７を潤
滑水保持室１１ａ内に同心的に設けたものである。その
他の構成は、図１に示した実施例と共通であるので同一
の参照符号を付して重複する説明を省略する。FIG. 6 is a vertical sectional side view showing still another embodiment of the vertical shaft drainage pump shaft sealing device according to the present invention. In this shaft sealing device, an auxiliary container 17 fixed to the seal case 6 is concentrically provided in the lubricating water holding chamber 11a. Since other configurations are common to those of the embodiment shown in FIG. 1, the same reference numerals are given and redundant description will be omitted.
【００２５】補助容器１７は、その上部が開放し、その
底部が連通穴（図示せず）によって潤滑水保持室１１ａ
と連通する補助室１７ａを形成し、潤滑水保持室１１ａ
内の潤滑水の一部を該補助室１７ａ内に回転しないよう
に保持する。そして、戻し水路１４は、潤滑水保持室１
１ａに対しては、回転筒１１と補助容器１７の間の隙間
に向けて下向きに開口する。The auxiliary container 17 has an upper portion opened and a lower portion provided with a communication hole (not shown) at the bottom portion thereof for holding the lubricating water holding chamber 11a.
An auxiliary chamber 17a communicating with the lubricating water holding chamber 11a is formed.
A part of the lubricating water therein is held in the auxiliary chamber 17a so as not to rotate. The return water passage 14 is provided in the lubricating water holding chamber 1
1a is opened downward toward a gap between the rotary cylinder 11 and the auxiliary container 17.
【００２６】この実施例における補助容器１７は、潤滑
水保持室１１ａ内を仕切って潤滑水の一部を回転しない
ように保持し、しかも遠心力による潤滑水の上昇水路を
回転筒１１と補助容器１７の間の狭い隙間に限ると共に
該隙間に戻し水路１４からの戻り水を噴出して潤滑水の
上昇を押えるようにしたので、潤滑水の飛散を一層軽減
することができる効果がある。The auxiliary container 17 in this embodiment partitions the inside of the lubricating water holding chamber 11a and holds a part of the lubricating water so that it does not rotate, and the rising channel of the lubricating water due to centrifugal force is provided in the rotating cylinder 11 and the auxiliary container. Since it is limited to the narrow gap between the gaps 17 and the return water from the return water channel 14 is jetted to the gap so as to suppress the rise of the lubricating water, it is possible to further reduce the scattering of the lubricating water.
【００２７】[0027]
【発明の効果】本発明は、シートリングとシールリング
の周囲に形成した潤滑水保持室によって多量の潤滑水を
保持し、また、回転時の遠心力により上部開口から飛散
しようとする潤滑水を返し板により抑制すると共に該返
し板の内周縁から漏出しようとする潤滑水を戻し水路に
よる遠心ポンプ作用によって潤滑水保持室の内側に押し
戻すようにしたので、潤滑水を有効に使用して長時間の
気中運転に耐えられる水潤滑を実現することができる。According to the present invention, a large amount of lubricating water is held by the lubricating water holding chamber formed around the seat ring and the seal ring, and the lubricating water that is about to be scattered from the upper opening due to centrifugal force during rotation is retained. Since the lubricating water that is suppressed by the return plate and leaks from the inner peripheral edge of the return plate is pushed back to the inside of the lubricating water holding chamber by the centrifugal pump action by the return water channel, it is possible to effectively use the lubricating water for a long time. It is possible to realize water lubrication that can withstand in-air operation.
【図１】本発明になる立軸排水ポンプ軸封装置の一実施
例を示す縦断側面図である。FIG. 1 is a vertical sectional side view showing an embodiment of a vertical shaft drainage pump shaft sealing device according to the present invention.
【図２】本発明になる立軸排水ポンプ軸封装置における
返し板に形成する戻し水路の一実施例を示す斜視断面図
である。FIG. 2 is a perspective sectional view showing an embodiment of a return water channel formed in the return plate in the vertical shaft drainage pump shaft sealing device according to the present invention.
【図３】本発明になる立軸排水ポンプ軸封装置における
返し板に形成する戻し水路の他の実施例を示す斜視断面
図である。FIG. 3 is a perspective sectional view showing another embodiment of the return water channel formed in the return plate in the vertical shaft drainage pump shaft sealing device according to the present invention.
【図４】本発明になる立軸排水ポンプ軸封装置における
返し板に形成する戻し水路の更に他の実施例を示す斜視
断面図である。FIG. 4 is a perspective sectional view showing still another embodiment of the return water channel formed in the return plate in the vertical shaft drainage pump shaft sealing device according to the present invention.
【図５】本発明になる立軸排水ポンプ軸封装置の他の実
施例を示す縦断側面図である。FIG. 5 is a vertical sectional side view showing another embodiment of the vertical shaft drainage pump shaft sealing device according to the present invention.
【図６】本発明になる立軸排水ポンプ軸封装置の更に他
の実施例を示す縦断側面図である。FIG. 6 is a vertical sectional side view showing still another embodiment of the vertical shaft drainage pump shaft sealing device according to the present invention.
１…主軸、２…フランジ、３ａ，３ｂ…ケース、４…シ
ートリング、５…シールリング、６…シールケース、７
…ポンプケーシング、８…カバー、９…Ｏリング、１０
…コイルばね、１１…回転筒、１１ａ…潤滑水保持室、
１２…返し板、１４…戻し水路。1 ... Spindle, 2 ... Flange, 3a, 3b ... Case, 4 ... Seat ring, 5 ... Seal ring, 6 ... Seal case, 7
… Pump casing, 8… Cover, 9… O-ring, 10
... Coil spring, 11 ... Rotating cylinder, 11a ... Lubricating water holding chamber,
12 ... Return plate, 14 ... Return channel.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 千葉 吉秋 茨城県土浦市神立町502番地 株式会社日 立製作所機械研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiaki Chiba 502 Jinrachicho, Tsuchiura City, Ibaraki Pref. Inside the Ritsuryo Seisakusho Co., Ltd.
Claims (9)
を支持するフランジと、シールケースに支持されて前記
シートリングに当接するシールリングを備えた立軸ポン
プ用軸封装置において、 前記フランジに取り付けられてシートリングとシールリ
ングの外周を取り囲むように起立して潤滑水保持室を形
成する回転筒と、該回転筒の上縁から該回転筒の上部開
口を覆うように突出した返し板と、該返し板の内周縁か
ら外周部に向かって伸びて該回転筒の内側に向けて開口
する戻し水路を設けたことを特徴とする立軸ポンプ用軸
封装置。1. A shaft seal device for a vertical shaft pump, comprising: a main shaft; a flange fixed to the main shaft to support a seat ring; and a seal ring supported by a seal case to abut against the seat ring. A rotary cylinder that is attached and stands up to surround the outer circumferences of the seat ring and the seal ring to form a lubricating water holding chamber; and a return plate that projects from the upper edge of the rotary cylinder so as to cover the upper opening of the rotary cylinder. A shaft seal device for a vertical shaft pump, comprising a return water channel extending from an inner peripheral edge of the return plate toward an outer peripheral portion and opening toward an inner side of the rotary cylinder.
段付きに形成し、前記戻し水路は前記段部に臨んで開口
させたことを特徴とする立軸ポンプ用軸封装置。2. The shaft sealing device for a vertical shaft pump according to claim 1, wherein an inner peripheral edge of the return plate is formed in a stepped shape, and the return water channel is opened so as to face the stepped portion.
路の潤滑水保持室側開口の内側に該開口から噴出する戻
り水を方向付ける案内壁を備えたことを特徴とする立軸
ポンプ用軸封装置。3. The vertical shaft pump according to claim 1, wherein the return plate has a guide wall for directing return water ejected from the opening inside the opening of the return water channel on the side of the lubricating water holding chamber. Shaft sealing device.
静止状態に補助容器を設置し、潤滑水の一部を回転しな
いように保持することを特徴とする立軸ポンプ用軸封装
置。4. The shaft seal device for a vertical shaft pump according to claim 1, wherein an auxiliary container is installed in a stationary state in the lubricating water holding chamber to hold a part of the lubricating water so as not to rotate.
と同心的に設置し、戻し水路の外端は、回転筒と補助容
器の間に向けて開口することを特徴とする立軸ポンプ用
軸封装置。5. The vertical shaft pump according to claim 4, wherein the auxiliary container is installed concentrically with the rotary cylinder, and an outer end of the return water channel is opened between the rotary cylinder and the auxiliary container. Shaft sealing device.
と、このフランジに固定したケ−スに取り付けたシ−ト
リングと、前記主軸とフランジを囲むように設けたポン
プケ−シングと、このポンプケ−シング側に設けたシ−
ルケ−スと、このシ−ルケ−スに固定したケ−スに取り
付けたシ−ルリングと、このシ−ルリングを前記シ−ト
リング面に押接する弾性手段とを備えた立軸ポンプ用軸
封装置において、 前記両ケ−ス及びシ−ルケ−スの外周を囲むように前記
フランジに固定して潤滑水保持室を形成する回転筒と、
この回転筒の上縁に設けられて回転筒の内壁に沿って上
昇する潤滑水の上昇を抑制する返し板と、該返し板の内
周縁から外周部に伸びるように形成されて該返し板の内
周縁から漏出しようとする潤滑水を吸い込んで潤滑水保
持室に戻す戻し水路を設けたことを特徴とする立軸ポン
プ用軸封装置。6. A flange provided on the outer periphery of a main shaft of a vertical shaft pump, a seat ring attached to a case fixed to the flange, a pump casing provided so as to surround the main shaft and the flange, and the pump casing. -Shear provided on the sing side
A shaft seal device for a vertical shaft pump including a casing, a seal ring attached to the casing fixed to the seal casing, and elastic means for pressing the seal ring against the seat ring surface. A rotary cylinder fixed to the flange so as to surround the outer peripheries of the both cases and the seal case, and forming a lubricating water holding chamber,
A return plate that is provided at the upper edge of the rotary cylinder and that suppresses the rise of lubricating water that rises along the inner wall of the rotary cylinder; and a return plate that is formed to extend from the inner peripheral edge of the return plate to the outer peripheral portion. A shaft seal device for a vertical shaft pump, comprising a return water channel for sucking lubricating water which is about to leak from the inner peripheral edge and returning it to the lubricating water holding chamber.
段付きに形成し、前記戻し水路の内端は前記段部に臨ん
で開口させたことを特徴とする立軸ポンプ用軸封装置。7. The shaft seal device for a vertical shaft pump according to claim 6, wherein an inner peripheral edge of the return plate is formed in a stepped shape, and an inner end of the return water channel is opened so as to face the stepped portion. .
にセラミックスを使用したことを特徴とする立軸ポンプ
用軸封装置。8. A shaft seal device for a vertical shaft pump according to any one of claims 1 to 7, wherein ceramic is used for the seal member.
転を行う雨水排水ポンプに使用したことを特徴とする立
軸ポンプ用軸封装置。9. A shaft sealing device for a vertical shaft pump according to any one of claims 1 to 7, which is used for a rainwater drainage pump performing a preceding standby operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22616695A JP3223767B2 (en) | 1995-09-04 | 1995-09-04 | Shaft sealing device for vertical shaft pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22616695A JP3223767B2 (en) | 1995-09-04 | 1995-09-04 | Shaft sealing device for vertical shaft pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0972428A true JPH0972428A (en) | 1997-03-18 |
| JP3223767B2 JP3223767B2 (en) | 2001-10-29 |
Family
ID=16840911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22616695A Expired - Fee Related JP3223767B2 (en) | 1995-09-04 | 1995-09-04 | Shaft sealing device for vertical shaft pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3223767B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383419C (en) * | 2005-08-05 | 2008-04-23 | 重庆大学 | Water lubricating dynamic sealing rubber alloy bearing |
| CN107869481A (en) * | 2016-09-28 | 2018-04-03 | 中国电建集团上海能源装备有限公司 | A kind of self-lubricating bearing case of photo-thermal power station pump for liquid salts |
-
1995
- 1995-09-04 JP JP22616695A patent/JP3223767B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383419C (en) * | 2005-08-05 | 2008-04-23 | 重庆大学 | Water lubricating dynamic sealing rubber alloy bearing |
| CN107869481A (en) * | 2016-09-28 | 2018-04-03 | 中国电建集团上海能源装备有限公司 | A kind of self-lubricating bearing case of photo-thermal power station pump for liquid salts |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3223767B2 (en) | 2001-10-29 |
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