JPH0352395U - - Google Patents
Info
- Publication number
- JPH0352395U JPH0352395U JP11315089U JP11315089U JPH0352395U JP H0352395 U JPH0352395 U JP H0352395U JP 11315089 U JP11315089 U JP 11315089U JP 11315089 U JP11315089 U JP 11315089U JP H0352395 U JPH0352395 U JP H0352395U
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- attached
- ring
- pump
- tapered surface
- 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
- Mechanical Sealing (AREA)
Description
第１図、第２図は本考案の第１、第２実施例の
要部断面図である。
１……曲胴部、２……ポンプ軸、３……軸封部
、４……メカニカルシール、５……シートリング
、６……従動リング、７……テーパ面、９……シ
ールボツクス、１０……連通孔、１１……シリン
ダ室、１２……ピストン、１３……ピストンロツ
ド、１６……圧接手段、１７……回転リング、１
８……テーパ面、１９……ブツシユ、２０……テ
ーパ面、Ｓ……密封面。
1 and 2 are sectional views of essential parts of the first and second embodiments of the present invention. DESCRIPTION OF SYMBOLS 1...Bent body, 2...Pump shaft, 3...Shaft seal, 4...Mechanical seal, 5...Seat ring, 6...Driver ring, 7...Tapered surface, 9...Seal box, 10... Communication hole, 11... Cylinder chamber, 12... Piston, 13... Piston rod, 16... Pressing means, 17... Rotating ring, 1
8...Tapered surface, 19...Button, 20...Tapered surface, S...Sealing surface.
Claims (1)
通するポンプ軸の軸封部にメカニカルシールを装
着した立軸ポンプにおいて、前記メカニカルシー
ルのシートリングをポンプ軸に固定し、このシー
トリングに押圧手段により下方から密接する静止
形従動リングを、前記曲胴部の軸封部開口に取り
付けたシールボツクス内周面にパツキングを介し
て摺動可能に装着するとともに、前記シールボツ
クスに、一端が前記曲胴部内と連通する連通孔を
有するシリンダ室を設け、このシリンダ室内に摺
動可能に設けたピストンのピストンロツド先端を
、前記従動リングに係合し、前記曲胴部が負圧に
なつた時、前記ピストンにより従動リングを下方
に移動させ密封面を解放させるようにしたことを
特徴とする立軸ポンプ。 (2) 前記従動リングの密封面と反対側の内周面
に下方に向つて拡大するテーパ面を設け、かつ、
ポンプ軸に前記テーパ面と間隙をもつて対応する
テーパ面を外周面に備えた回転リングを取り付け
たことを特徴とする前記請求項１に記載の立軸ポ
ンプ。 (3) 前記シールボツクスの下部内面に、内周面
に下方に向つて拡大するテーパ面を有するブツシ
ユをパツキングを介して摺動可能に取り付け、か
つ、ポンプ軸に前記テーパ面と間隙をもつて対応
するテーパ面を外周面に備えた回転リングを設け
たことを特徴とする前記請求項１に記載の立軸ポ
ンプ。[Claims for Utility Model Registration] (1) In a vertical shaft pump in which a mechanical seal is attached to the shaft seal portion of a pump shaft that vertically passes through a curved body of a discharge casing, the seat ring of the mechanical seal is attached to the pump shaft. A stationary driven ring that is fixed and brought into close contact with the seat ring from below by a pressing means is slidably attached to the inner circumferential surface of the seal box attached to the shaft seal opening of the curved body through packing, The seal box is provided with a cylinder chamber having a communication hole that communicates with the inside of the curved body at one end, and a piston rod tip of a piston slidably provided in the cylinder chamber is engaged with the driven ring and the cylinder chamber is connected to the curved body. 1. A vertical shaft pump, characterized in that when a negative pressure is applied to the shaft, the driven ring is moved downward by the piston to release a sealing surface. (2) A tapered surface that expands downward is provided on the inner peripheral surface of the driven ring opposite to the sealing surface, and
2. The vertical shaft pump according to claim 1, wherein a rotary ring is attached to the pump shaft, the rotary ring having an outer peripheral surface having a tapered surface corresponding to the tapered surface with a gap therebetween. (3) A bushing having a tapered surface that expands downward on the inner peripheral surface is slidably attached to the inner surface of the lower part of the seal box via a packing, and the bushing is attached to the pump shaft with a gap between the bushing and the tapered surface. 2. The vertical shaft pump according to claim 1, further comprising a rotating ring having a corresponding tapered surface on its outer peripheral surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11315089U JPH0730953Y2 (en) | 1989-09-27 | 1989-09-27 | Vertical pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11315089U JPH0730953Y2 (en) | 1989-09-27 | 1989-09-27 | Vertical pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0352395U true JPH0352395U (en) | 1991-05-21 |
| JPH0730953Y2 JPH0730953Y2 (en) | 1995-07-19 |
Family
ID=31661573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11315089U Expired - Fee Related JPH0730953Y2 (en) | 1989-09-27 | 1989-09-27 | Vertical pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0730953Y2 (en) |
-
1989
- 1989-09-27 JP JP11315089U patent/JPH0730953Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0730953Y2 (en) | 1995-07-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |