CN102767534A - Sealing device for motor output shaft of multistage submersible pump for high-water head well - Google Patents
Sealing device for motor output shaft of multistage submersible pump for high-water head well Download PDFInfo
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- CN102767534A CN102767534A CN2012102358498A CN201210235849A CN102767534A CN 102767534 A CN102767534 A CN 102767534A CN 2012102358498 A CN2012102358498 A CN 2012102358498A CN 201210235849 A CN201210235849 A CN 201210235849A CN 102767534 A CN102767534 A CN 102767534A
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- ring
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Abstract
The invention provides a sealing device for a motor output shaft of a multistage submersible pump for a high-water head well, relating to submersible pumps. The sealing device comprises a motor output shaft, a motor mechanical seal, a pump body rear end cover and a pump body rear cavity, and is characterized in that a mechanical seal and a hydro-extracting cage are additionally arranged in the pump body rear cavity, the hydro-extracting cage is of a conical ring shape, and the small-diameter end of the conical ring is inward integrally extended with an annular disc; an isodiametric skeleton oil seal is firstly sheathed in a central round groove arranged at the front surface of a motor front end cover, then a static ring sealing ring, a static ring, a movable ring, a spring, a spring seat and a hydro-extracting cage of a mechanical seal, which are additionally arranged, are sequentially sheathed on a step shaft of the motor output shaft; and the excircle and the outer end surface of the static ring sealing ring are respectively attached to the excirlce of the central round groove of a motor front end cover and the outer end surface of the skeleton oil seal, the inner wall of the conical ring body of the hydro-extracting cage is elastically clamped on the outer edge of the mechanically-sealed spring seat in a compression manner, and the outer surface of the ring disc of the hydro-extracting cage is compressively attached to the axial check ring of the step shaft of the motor output shaft. The skeleton oil seal and the mechanical oil seal are additionally arranged, so that the sealing safety is improved.
Description
Technical field:
The present invention relates to submersible pump, be specially adapted to high head well use multistage motor for submerged pump output shaft seal arrangement.
Background technique:
Well uses submersible pump to be multistage pump, is made up of motor, the pump housing.The pump housing is made up of pump shaft, several modular pumps, pump head, superimposed fixing device.Modular pump is made up of a spiral case, an impeller, water conservancy diversion leaf, the pump shaft section of walking.
The oil-filled type motor output shaft passes spring seat, spring, rotating ring, stationary ring, the stationary ring seal ring of mechanical seal after being linked in bearing fixing on the motor front cover successively, stretches out front cover outside central hole again.After pump housing rear end cover docks with motor front cover enforcement peripheral seal and fixes; The motor output shaft axle head stretches into pump housing rear end cover central hole; The motor output shaft axle head is step axle shape; The place is provided with tool withdrawal groove on step pillow block rank, and step axle outer end axle is provided with keyway, and step axle outer end axle is implemented to be in transmission connection through double-headed shaft shell type coupling and pump housing main shaft.
Mechanical seal is that standard piece is usually used in water pump packing, generally is on the oil-filled type motor mechanical seal to be installed, and needn't seal naturally at this end of the pump housing; But for multistage pump, modular pump quantity sometimes is many, and the longest combination can reach 4,5 meters; This high-lift pump is for the motor side that mechanical seal is installed; Also can be owing to high hydraulic pressure is pressed in the motor, motor side mechanical seal dynamic and static ring is mounted in the direct pressure-bearing of nearly water pump end after all, can produce the elastic yield phenomenon simultaneously.In case water infiltrates, infiltration influences the motor operating mode in the motor, and oil impregnate influences water quality in the pump housing.
Summary of the invention:
The objective of the invention is to overcome above-mentioned defective, a kind of high head well use multistage motor for submerged pump output shaft seal arrangement is provided.
Scheme of the present invention is: comprise motor output shaft, electromechanics sealing, pump housing rear end cover, pump housing back cavity; It is characterized in that: in pump housing back cavity, set up a mechanical seal, a dewatering device; Dewatering device is shaped as conical ring; Circle ring disk of the inside disjunctor extension of conical ring miner diameter end, dewatering device circle ring disk internal diameter is greater than the motor output shaft external diameter; Be provided with a central round recessed at motor front cover front surface; Be inserted in isometrical outside framework oil seal earlier in central authorities' round recessed, then on motor output shaft step axle, be inserted in stationary ring seal ring, stationary ring, rotating ring, spring, spring seat, the dewatering device of the mechanical seal of setting up successively; Stationary ring seal ring with outer, exterior edge face are fitted in respectively on motor front cover central authorities round recessed cylindrical, the outside framework oil seal exterior edge face; Dewatering device conical ring body inwall elasticity pressure type is stuck on the spring seat outer of mechanical seal; Dewatering device circle ring disk outer surface is fitted with the shaft block ring pressure type that is installed on motor output shaft step axle tool withdrawal groove, and dewatering device conical ring body bigger diameter end outer and pump housing rear end cover internal surface are possessed the gap.
The invention has the advantages that: pump housing back cavity installs outside framework oil seal, mechanical seal additional on motor output shaft, has guaranteed the motor output end sealing of multistage high-head pump, and margin of safety improves.
Description of drawings:
Accompanying drawing is a structural representation of the present invention.
Embodiment:
The present invention includes motor output shaft 4, electromechanics sealing, pump housing rear end cover 5, pump housing back cavity; It is characterized in that: in pump housing back cavity, set up a mechanical seal, a dewatering device; Dewatering device is shaped as conical ring; Circle ring disk of the inside disjunctor extension of conical ring miner diameter end, dewatering device circle ring disk internal diameter is greater than motor output shaft 4 external diameters; Be provided with a central round recessed at motor front cover 6 front surfaces; Be inserted in isometrical outside framework oil seal 1 earlier in central authorities' round recessed, then on motor output shaft 4 step axles, be inserted in stationary ring seal ring, stationary ring 2, rotating ring, spring, spring seat 3, the dewatering device of the mechanical seal of setting up successively; Stationary ring seal ring with outer, exterior edge face are fitted in respectively on motor front cover 6 central round recessed cylindricals, outside framework oil seal 1 exterior edge face; Dewatering device conical ring body inwall elasticity pressure type is stuck on spring seat 3 outers of mechanical seal; Dewatering device circle ring disk outer surface is fitted with the shaft block ring pressure type that is installed on motor output shaft 4 step axle tool withdrawal grooves, and dewatering device conical ring body bigger diameter end outer and pump housing rear end cover 5 internal surfaces are possessed the gap.
Pump housing back cavity installs mechanical seal additional, is in the back cavity water-cooled can not generate heat.Two the mechanical seal dynamic and static ring 2 in motor front cover 6 both sides are reverse each other simultaneously, and sealing effect is many.Guaranteed the sealing operation of motor output shaft 4 under the high head high pressure conditions.
Claims (1)
1. high head well use multistage motor for submerged pump output shaft seal arrangement; Comprise motor output shaft (4), electromechanics sealing, pump housing rear end cover (5), pump housing back cavity; It is characterized in that: in pump housing back cavity, set up a mechanical seal, a dewatering device; Dewatering device is shaped as conical ring, circle ring disk of the inside disjunctor extension of conical ring miner diameter end, and dewatering device circle ring disk internal diameter is greater than motor output shaft (4) external diameter; Be provided with a central round recessed at motor front cover (6) front surface; Fit earlier in central authorities' round recessed and be inserted in isometrical outside framework oil seal (1), then on motor output shaft (4) step axle, be inserted in stationary ring (2) seal ring, stationary ring (2), rotating ring, spring, spring seat (3) and the dewatering device of the mechanical seal of setting up successively; Stationary ring (2) seal ring with outer, interior edge face are fitted in respectively on the central round recessed cylindrical of motor front cover (6), outside framework oil seal (1) exterior edge face; Dewatering device conical ring body inwall elasticity pressure type is stuck on spring seat (3) outer of mechanical seal; Dewatering device circle ring disk outer surface is fitted with the shaft block ring pressure type that is installed on motor output shaft (4) step axle tool withdrawal groove, and dewatering device conical ring body bigger diameter end outer and pump housing rear end cover (5) internal surface are possessed the gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102358498A CN102767534A (en) | 2012-06-28 | 2012-06-28 | Sealing device for motor output shaft of multistage submersible pump for high-water head well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102358498A CN102767534A (en) | 2012-06-28 | 2012-06-28 | Sealing device for motor output shaft of multistage submersible pump for high-water head well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102767534A true CN102767534A (en) | 2012-11-07 |
Family
ID=47095050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102358498A Pending CN102767534A (en) | 2012-06-28 | 2012-06-28 | Sealing device for motor output shaft of multistage submersible pump for high-water head well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102767534A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438020A (en) * | 2013-09-02 | 2013-12-11 | 王子新 | Seal device for overwater submerged pump |
| CN104265678A (en) * | 2014-09-26 | 2015-01-07 | 浙江理工大学 | Sealing mechanism for gap between impeller and volute |
| CN110552895A (en) * | 2019-10-12 | 2019-12-10 | 北京慨尔康科技发展有限公司 | Centrifugal pump |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1289442A (en) * | 1970-03-06 | 1972-09-20 | ||
| CN2037509U (en) * | 1987-07-14 | 1989-05-10 | 德昌电机工业制造厂有限公司 | Motor with oil slinger |
| CN2527766Y (en) * | 2001-12-11 | 2002-12-25 | 顾和尚 | Pump for conveying residue and slurry |
| EP1394429A2 (en) * | 2002-08-30 | 2004-03-03 | Aktiebolaget SKF | A bearing housing and a seal assembly in such a bearing housing |
| CN2733047Y (en) * | 2004-04-20 | 2005-10-12 | 张维昌 | Single-screw pump with underslung seal |
| CN201034161Y (en) * | 2007-04-29 | 2008-03-12 | 王大禹 | Energy-saving type sealer |
| EP2055962A1 (en) * | 2007-11-05 | 2009-05-06 | Sulzer Pumpen AG | Centrifugal pump, a shaft sleeve and a stationary seal member |
| CN201307800Y (en) * | 2008-12-04 | 2009-09-09 | 江门市瑞荣泵业有限公司 | A water-filling motor bearing base mechanism of submersible pump |
| CN201705716U (en) * | 2010-06-04 | 2011-01-12 | 淮安精英电气科技有限公司 | Submersible sewage pump motor shaft sealing device |
| CN102108977A (en) * | 2011-03-30 | 2011-06-29 | 江苏全力机械制造有限公司 | Double-sealed structure of submersible sewage pump |
-
2012
- 2012-06-28 CN CN2012102358498A patent/CN102767534A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1289442A (en) * | 1970-03-06 | 1972-09-20 | ||
| CN2037509U (en) * | 1987-07-14 | 1989-05-10 | 德昌电机工业制造厂有限公司 | Motor with oil slinger |
| CN2527766Y (en) * | 2001-12-11 | 2002-12-25 | 顾和尚 | Pump for conveying residue and slurry |
| EP1394429A2 (en) * | 2002-08-30 | 2004-03-03 | Aktiebolaget SKF | A bearing housing and a seal assembly in such a bearing housing |
| CN2733047Y (en) * | 2004-04-20 | 2005-10-12 | 张维昌 | Single-screw pump with underslung seal |
| CN201034161Y (en) * | 2007-04-29 | 2008-03-12 | 王大禹 | Energy-saving type sealer |
| EP2055962A1 (en) * | 2007-11-05 | 2009-05-06 | Sulzer Pumpen AG | Centrifugal pump, a shaft sleeve and a stationary seal member |
| CN201307800Y (en) * | 2008-12-04 | 2009-09-09 | 江门市瑞荣泵业有限公司 | A water-filling motor bearing base mechanism of submersible pump |
| CN201705716U (en) * | 2010-06-04 | 2011-01-12 | 淮安精英电气科技有限公司 | Submersible sewage pump motor shaft sealing device |
| CN102108977A (en) * | 2011-03-30 | 2011-06-29 | 江苏全力机械制造有限公司 | Double-sealed structure of submersible sewage pump |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438020A (en) * | 2013-09-02 | 2013-12-11 | 王子新 | Seal device for overwater submerged pump |
| CN103438020B (en) * | 2013-09-02 | 2017-01-11 | 王子新 | Seal device for overwater submerged pump |
| CN104265678A (en) * | 2014-09-26 | 2015-01-07 | 浙江理工大学 | Sealing mechanism for gap between impeller and volute |
| CN104265678B (en) * | 2014-09-26 | 2017-02-15 | 浙江理工大学 | Sealing mechanism for gap between impeller and volute |
| CN110552895A (en) * | 2019-10-12 | 2019-12-10 | 北京慨尔康科技发展有限公司 | Centrifugal pump |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121107 |