WO2007096736A1 - Pump seal apparatus - Google Patents
Pump seal apparatus Download PDFInfo
- Publication number
- WO2007096736A1 WO2007096736A1 PCT/IB2007/000394 IB2007000394W WO2007096736A1 WO 2007096736 A1 WO2007096736 A1 WO 2007096736A1 IB 2007000394 W IB2007000394 W IB 2007000394W WO 2007096736 A1 WO2007096736 A1 WO 2007096736A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seal
- pump
- housing
- chamber
- impeller
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/406—Sealings between relatively-moving surfaces by means of fluid by at least one pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
Definitions
- THIS invention relates to a pump seal apparatus.
- the invention is particularly but not solely concerned with slurry pumps used in various applications to pump slurries, i.e. fluent suspensions of solid particles in liquid, typically water.
- the pump impeller is mounted fast on a shaft which rotates it in a pump casing.
- the shaft is driven by an external motor and is supported by bearings outside the casing.
- bearings outside the casing.
- a typical sealing arrangement includes a series of packing rings, and possibly also a labyrinth seal, in a stuffing box located between the pump casing and the bearing housing.
- the present invention provides a pump seal apparatus for a pump having a . rotatable shaft supported by a bearing assembly in a bearing housing, a pump casing and a pump impeller mounted fast on the shaft for rotation in the casing in order to pump liquid material from the casing
- the pump seal apparatus comprising: a seal housing mountable non-rotatably to the bearing housing at a position between the pump casing and the bearing housing, the seal housing having a radially outer wall with an opening therein at an operatively low level, a sleeve mountable fast on the shaft partially within the seal housing and between the pump casing and the bearing housing, the sleeve carrying fast thereon a vaned expulsion impeller operative to impel, outwardly against the radially outer wall of the seal housing, liquid material which enters the seal housing from the pump casing, whereby the liquid material is expelled from seal housing through the opening; and means forming a labyrinth seal between the sleeve and the housing.
- the labyrinth seal is located downstream of the expulsion impeller, i.e. on the bearing assembly side thereof.
- the labyrinth seal may be defined between a radially inner wall of the seal housing and an annular member fast on the sleeve.
- the seal apparatus may furthermore comprise a lip seal carried by the annular member and arranged to seal against a surface of the seal housing which is transverse to the shaft.
- the lip seal may be arranged between the expulsion impeller and the labyrinth seal.
- Figure 1 diagrammatically illustrates a centrifugal slurry pump fitted with a seal apparatus according to the invention
- Figure 2 shows a diagrammatic enlargement of the area 2 in Figure 1 ;
- Figure 3 shows a cross-section at the line 3-3 in Figure 2.
- the slurry pump 10 seen in Figure 1 has a pump casing 12 with an inlet 14 and an outlet 16.
- the casing 12 accommodates a pump impeller 18 which is fast on a shaft 20 driven by a motor (not shown) and supported by bearings (not shown) in a bearing housing 22.
- liquid material in this case slurry, is drawn into the pump casing 12 through the inlet 14 and is expelled therefrom under pressure through the outlet 16 by the action of the rotating pump impeller 18.
- a stuffing box 24 accommodating a series of packing rings which are provided to prevent slurry from leaking from the pump casing along the shaft and into the bearing housing.
- a seal apparatus is designated by the numeral 26. It includes a seal housing 28 which is bolted to the bearing housing 22 through bolt holes 30, a sleeve 34 on the shaft 20 and an annular member 36 on the sleeve. The sleeve is sealed with respect to the shaft by an O-ring 38 which allows it to slide on the shaft, and the member 36 is sealed with respect to the sleeve by O-rings 40.
- the sleeve At its upstream end, i.e. the end nearest to the pump casing 12, the sleeve carries a radial extension 42 having an inner face 44 formed with circumferentially spaced recesses 46 shaped to form intermediate vanes 48.
- the radial extension 42 acts as an expulsion impeller, rotating in a chamber 49 defined by the seal housing 28, to expel slurry radially from the housing as described below.
- the radially outer wall 50 of the chamber 49 is formed at a low level with a waste opening 52 in the form of an elongate slot.
- the slot 52 extends for some distance in the circumferential direction.
- the annular member 36 is located downstream of the expulsion impeller 42. Its radially outer surface is formed with an annular groove in which the inner end of a lip seal 54 is anchored.
- the radially outer end of the lip seal which is made of rubber or other suitable, resiliently flexible material, acts against a transverse, annular wall 56 of the seal housing.
- the numeral 56 designates the interior of the bearing housing 22 which accommodates the conventional bearing assembly (not shown) that supports the shaft 20.
- the interior 56 is charged in the normal way with grease through a grease nipple (not shown).
- the lip seal 54 which acts against the wall 56 of the seal housing as a result of the prevailing pressure, acts to prevent slurry which bypasses the expulsion impeller 42 from reaching the interior 56 of the bearing housing. Slurry arrested by the lip seal flows to waste through a waste opening in the form of an elongate, circumferentially extending slot 57 similar to the slot 52. Slurry which manages to bypass the lip seal is arrested by the labyrinth seal 60.
- the housing 28 is bolted to the bearing housing 22.
- the housing 28 could be pressed into position with the provision of an O-ring seal 80, as also illustrated in Figure 2.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2007219209A AU2007219209A1 (en) | 2006-02-20 | 2007-02-20 | Pump seal apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA2006/01461 | 2006-02-20 | ||
ZA200601461 | 2006-02-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007096736A1 true WO2007096736A1 (en) | 2007-08-30 |
Family
ID=38051784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2007/000394 WO2007096736A1 (en) | 2006-02-20 | 2007-02-20 | Pump seal apparatus |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU2007219209A1 (en) |
WO (1) | WO2007096736A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102116307A (en) * | 2010-12-30 | 2011-07-06 | 上海阿波罗机械股份有限公司 | Labyrinth-type sealing device for bearing on centrifugal pump |
CN102606515A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Oil seal system for boric acid recirculation pump |
US11293554B2 (en) | 2017-03-09 | 2022-04-05 | Johnson Controls Technology Company | Back to back bearing sealing systems |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103438220B (en) * | 2013-09-11 | 2016-03-23 | 西安船舶工程研究院有限公司 | A kind of vibrator sealing configuration |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB637005A (en) * | 1948-03-19 | 1950-05-10 | Jonkopings Mek Werkstads Atkie | Improvements in centrifugal pumps |
DE930961C (en) * | 1942-05-16 | 1955-07-28 | Daimler Benz Ag | Oil sealing on bearings of high-speed shafts, especially for the loading fan of aircraft engines |
US3731940A (en) * | 1971-08-06 | 1973-05-08 | W Spruiell | Elastomer seal with a plurality of annular ribs for a rotating shaft of a centrifugal pump or the like |
US4147468A (en) * | 1975-08-21 | 1979-04-03 | Mitsui Mining & Smelting Co., Ltd. | Impeller type pump having seal means and protective means |
US4521151A (en) * | 1980-03-07 | 1985-06-04 | Joy Manufacturing Holdings Limited | Centrifugal slurry pump |
US4795167A (en) * | 1987-06-26 | 1989-01-03 | Eagle Industry Co., Ltd. | Mechanical seal |
WO1994012816A1 (en) * | 1992-12-02 | 1994-06-09 | Rotoflex, Inc. | Resilient rotary seal with projecting edge |
-
2007
- 2007-02-20 AU AU2007219209A patent/AU2007219209A1/en not_active Abandoned
- 2007-02-20 WO PCT/IB2007/000394 patent/WO2007096736A1/en active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE930961C (en) * | 1942-05-16 | 1955-07-28 | Daimler Benz Ag | Oil sealing on bearings of high-speed shafts, especially for the loading fan of aircraft engines |
GB637005A (en) * | 1948-03-19 | 1950-05-10 | Jonkopings Mek Werkstads Atkie | Improvements in centrifugal pumps |
US3731940A (en) * | 1971-08-06 | 1973-05-08 | W Spruiell | Elastomer seal with a plurality of annular ribs for a rotating shaft of a centrifugal pump or the like |
US4147468A (en) * | 1975-08-21 | 1979-04-03 | Mitsui Mining & Smelting Co., Ltd. | Impeller type pump having seal means and protective means |
US4521151A (en) * | 1980-03-07 | 1985-06-04 | Joy Manufacturing Holdings Limited | Centrifugal slurry pump |
US4795167A (en) * | 1987-06-26 | 1989-01-03 | Eagle Industry Co., Ltd. | Mechanical seal |
WO1994012816A1 (en) * | 1992-12-02 | 1994-06-09 | Rotoflex, Inc. | Resilient rotary seal with projecting edge |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102116307A (en) * | 2010-12-30 | 2011-07-06 | 上海阿波罗机械股份有限公司 | Labyrinth-type sealing device for bearing on centrifugal pump |
CN102116307B (en) * | 2010-12-30 | 2012-06-20 | 上海阿波罗机械股份有限公司 | Labyrinth-type sealing device for bearing on centrifugal pump |
CN102606515A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Oil seal system for boric acid recirculation pump |
US11293554B2 (en) | 2017-03-09 | 2022-04-05 | Johnson Controls Technology Company | Back to back bearing sealing systems |
Also Published As
Publication number | Publication date |
---|---|
AU2007219209A1 (en) | 2007-08-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5195867A (en) | Slurry pump shaft seal flushing | |
CN101506526B (en) | Delivery pump | |
CA2150293C (en) | Centrifugal pump | |
WO2007096736A1 (en) | Pump seal apparatus | |
KR101647553B1 (en) | Mud pump | |
AU2008253594A1 (en) | Seal assembly | |
US9212659B2 (en) | Apparatus for sealing a pump chamber of a rotary lobe pump, and a rotary lobe pump having said apparatus | |
EP3545174B1 (en) | Shaft seal including an upstream non-contact part, e.g. a labyrinth seal, and a downstream slinger | |
WO1998007990A1 (en) | Pump shaft sealing system | |
CN210164650U (en) | Wear-resisting type chemical process pump | |
RU2372528C1 (en) | Pump device | |
JPS61123795A (en) | Centrifugal pump | |
RU171633U1 (en) | CENTRIFUGAL SLUDGE PUMP | |
CN109779921A (en) | A kind of high pressure axial-flow pump | |
CN100400891C (en) | Pump using waste tire | |
RU2171916C1 (en) | Suction dredge pump | |
KR200229322Y1 (en) | Centrifugal pump | |
AU2018204369A1 (en) | Seal Assembly | |
JP7441034B2 (en) | Mechanical seal for pumps and magnetic pumps equipped with the same | |
CN209638007U (en) | Large-scale Pulp pump seal chamber structure | |
CN207989321U (en) | A kind of water ring vacuum pump with moisture backflow | |
US10670033B2 (en) | Pump for a fluid | |
RU2256099C1 (en) | Scoop pump | |
CN114909323A (en) | Front opening ring protection device of submersible sewage pump | |
RU168011U1 (en) | SINGLE AUGER PUMP PUMP |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007219209 Country of ref document: AU |
|
ENP | Entry into the national phase |
Ref document number: 2007219209 Country of ref document: AU Date of ref document: 20070220 Kind code of ref document: A |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 07705616 Country of ref document: EP Kind code of ref document: A1 |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 07705616 Country of ref document: EP Kind code of ref document: A1 |
|
32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 26-03-2009). |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 07705616 Country of ref document: EP Kind code of ref document: A1 |