GB2263312A - Vertical pump with magnetic coupling. - Google Patents

Vertical pump with magnetic coupling. Download PDF

Info

Publication number
GB2263312A
GB2263312A GB9300733A GB9300733A GB2263312A GB 2263312 A GB2263312 A GB 2263312A GB 9300733 A GB9300733 A GB 9300733A GB 9300733 A GB9300733 A GB 9300733A GB 2263312 A GB2263312 A GB 2263312A
Authority
GB
United Kingdom
Prior art keywords
pump
annular space
delivery side
shaft
space
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.)
Withdrawn
Application number
GB9300733A
Other versions
GB9300733D0 (en
Inventor
Bernard Rudolf Wolbers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stork Pompen BV
Original Assignee
Stork Pompen BV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Stork Pompen BV filed Critical Stork Pompen BV
Publication of GB9300733D0 publication Critical patent/GB9300733D0/en
Publication of GB2263312A publication Critical patent/GB2263312A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F04D29/06—Lubrication
    • F04D29/061—Lubrication 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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
    • F04D13/026—Details of the bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
    • F04D13/027—Details of the magnetic circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • F04D29/588—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling or heating the machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/004—Priming of not self-priming pumps
    • F04D9/006—Priming of not self-priming pumps by venting gas or using gas valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/40—Transmission of power
    • F05B2260/404—Transmission of power through magnetic drive coupling
    • F05B2260/4041—Transmission of power through magnetic drive coupling the driven magnets encircling the driver magnets

Abstract

The inner rotor 4 of the magnetic coupling is coupled to the drive shaft 3 and the outer rotor 5, separated therefrom by a separating pot 8, is coupled to the shaft 7 supporting the pump member. The construction of the pump is hereby greatly simplified. Any danger of the bearings being left dry during starting of the pump is avoided. By connecting the delivery side of the pump (line 14) to the space 13 enclosing the outer rotor 5, sufficient liquid is always supplied to this space and therefore to the bearings which may be ceramic. Air bubble formation can be avoided by connecting this space to the atmosphere via a venting valve 20. <IMAGE>

Description

SUBSTANTIALLY VERTICAL PUMP WITH A MAGNETIC COUPLING The invention relates to a substantially vertical pump comprising a bearing mounted shaft supporting the pump members, a drive shaft, a suction side and a delivery side, wherein the pump members and the drive shaft are coupled by a magnetic coupling consisting of an inner rotor carrying magnets and, separated therefrom by a separating pot, an outer rotor carrying magnetic.
Such a pump is of a complicated construction. In addition there is the danger with such a pump that, due for instance to air bubble formation, the upper bearing in particular will be left dry when the pump is started, which can result in serious bearing damage. There is the further danger of the separating pot being damaged by contaminants in the liquid.
The invention has for its object to obviate these drawbacks.
This is achieved according to the invention in that the shaft of the inner rotor is the drive shaft and the shaft of the outer rotor is the shaft supporting the pump member.
Because the separating pot is reversed compared to the known pump, a simple construction results and it becomes possible to take steps to vent the space connecting onto the bearings.
To this end, the space connecting onto the bearings of the rotor is connectable via a venting valve to the atmosphere. Air bubble formation is therefore avoided.
In preference the said space is further connected to the delivery side of the pump, thus ensuring that the bearings are continually flushed with liquid.
The connection between the delivery side and the space connecting onto the bearings is preferably joined to this space in tangential direction. A cyclone action is hereby obtained so that as a consequence of the centrifugal action the contaminated parts in the liquid are moved to the outer wall and damage to the bearings and a separating pot are avoided.
The annular space is preferably further connected to the suction side of the pump for the discharge of the contaminated parts.
It is also possible to accommodate a cyclone or a filter in the connection line between the delivery side and the annular space.
Fig. 1 is a partly sectional view of the pump according to the invention, fig, 2 is a sectional view along the line z 1 in fig. 1, and fig. 3 shows a part of fig. 1 on a larger scale.
The pump 1 is driven from a drive motor 2 over a magnetic coupling via the drive shaft 3. The magnetic coupling consists of an inner rotor 4 connected to drive shaft 3 and an outer rotor 5 coupled to the shaft 7 supporting the impeller 6. Rotors 4 and 5 are spatially separated by the separating pot 8. Both rotors carry magnets such that when the drive shaft 3 turns the shaft 7 cf the pump follows without slipping. The said magnets are designated respectively with the reference numerals 9 and 10.
The pump is bearing mounted using ceramic bearings wherein a distinction is made between lower bearings 11 and upper bearings 12. Formed according to the invention round the outer rotor is an annular space 13 which is connected via the line 14 to the delivery side 15 of the pump. The line 14 carries to the annular space water which, as indicated by the arrows, follows a path from the feed opening upward and downward and finally comes out via the outlet opening 16 and line 17 into the suction side 18 of the pump. The bearings are therefore flushed by water.
Arranged on the top side of the annular space 13 is a venting opening 19 which is closable with a venting valve 20. The line 14 is connected via a feed opening 21 (sQe fig.
2) onto the annular space. As shown in fig. 2, this feed opening is oriented tangentially of the annular space 13 such that a cyclone action is created. Contaminants are therefore carried away downward along the outer wall so that a scouring effect is avoided in respect of the bearings and the separating pot. The clean liquid, that is, the liquid freed of contaminant6, is also drained to the suction side 18 via the narrow gap 22 (fig. 3) between the outer rotor and the separating pot 8. As a result of the invention the magnetic coupling is cooled by the water flowing therearound while the bearing is lubricated. The invention is particularly applicable in a pump with ceramic bearings, since these are particularly sensitive to being left dry.

Claims (8)

1. Substantially vertical pump comprising a bearing mounted shaft supporting the pump members, a drive shaft, a suction side and a delivery side, wherein the pump members and the drive shaft are coupled by a magnetic coupling consisting of an inner rotor carrying magnets and, separated therefrom by a separating pot, an outer rotor carrying magnets, characterized in that the shaft of the inner rotor is the drive shaft and the shaft of the outer rotor is the shaft supporting the pump members.
2. Pump as claimed in claim 1, characterized in that an annular space connecting onto the bearings of the rotor is connectable via a venting valve to the atmoSphere.
3. Pump as claimed in claim 2, characterized in that this space is connected to the delivery side.
4. Pump as claimed in claim 1, characterized in that the connection between the delivery side and the annular space is connected to the annular space in tangential direction.
5. Pump as claimed in claims 1-4, characterized in that the annular space is further connected to the suction side of the pump.
6. Punp as claimed in claims 1-5, characterized in that the connection of the annular space to the delivery side is located close to the top end and the connection to the suction side close to the bottom end.
7, Pump as claimed in claims 1-6, characterized in that a cyclone is accomodated in the connection between the delivery side and the annular space.
8. Pump as claimed in claims 1-6, characterized in that a filter is accomodated in the connection between the delivery side and the annular space.
GB9300733A 1992-01-17 1993-01-14 Vertical pump with magnetic coupling. Withdrawn GB2263312A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL9200088 1992-01-17

Publications (2)

Publication Number Publication Date
GB9300733D0 GB9300733D0 (en) 1993-03-03
GB2263312A true GB2263312A (en) 1993-07-21

Family

ID=19860313

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9300733A Withdrawn GB2263312A (en) 1992-01-17 1993-01-14 Vertical pump with magnetic coupling.

Country Status (1)

Country Link
GB (1) GB2263312A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2274683A (en) * 1993-01-14 1994-08-03 Stork Pompen Venting bearing lubrication ducts in pumps
FR2715442A1 (en) * 1994-01-26 1995-07-28 Lorraine Carbone Centrifugal pump with magnetic drive.
GB2332928A (en) * 1997-08-23 1999-07-07 Concentric Pumps Ltd Belt-driven pump with magnetic coupling
WO2007112938A2 (en) * 2006-03-31 2007-10-11 H. Wernert & Co. Ohg Rotary pump with coaxial magnetic coupling
CN101956715A (en) * 2009-07-17 2011-01-26 Hmd磁力泵有限公司 The non-intrusion type steam detector that is used for magnetic drive pump
CN103133392A (en) * 2013-03-06 2013-06-05 扬州大学 Movable cavity water guide valve device of upright open type pump system
EP3299627A1 (en) * 2016-09-23 2018-03-28 Speck Pumpen Verkaufsgesellchaft GmbH Feed pump
CN109779974A (en) * 2019-02-21 2019-05-21 三联泵业股份有限公司 A kind of vehicle-mounted fire water monitor water supply pump
EP3523539A4 (en) * 2016-11-01 2019-10-02 PSG Worldwide, Inc. Magnetically coupled sealless centrifugal pump

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115885915B (en) * 2022-11-24 2023-06-27 武汉理工大学 Multi-point oxygen supply device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1325131A (en) * 1971-02-16 1973-08-01 Sethco Mfg Corp Pump and filter unit
GB1485815A (en) * 1973-12-03 1977-09-14 Rule Industries Vertical shaft impeller pump
US4645433A (en) * 1984-07-16 1987-02-24 Cp Pumpen Ag Sealing shroud centrifugal pump
US4648808A (en) * 1984-07-16 1987-03-10 Cp Pumpen Ag Sealing shroud centrifugal pump
US4684329A (en) * 1985-01-08 1987-08-04 Nikkiso Co., Ltd. Canned motor pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1325131A (en) * 1971-02-16 1973-08-01 Sethco Mfg Corp Pump and filter unit
GB1485815A (en) * 1973-12-03 1977-09-14 Rule Industries Vertical shaft impeller pump
US4645433A (en) * 1984-07-16 1987-02-24 Cp Pumpen Ag Sealing shroud centrifugal pump
US4648808A (en) * 1984-07-16 1987-03-10 Cp Pumpen Ag Sealing shroud centrifugal pump
US4684329A (en) * 1985-01-08 1987-08-04 Nikkiso Co., Ltd. Canned motor pump

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2274683A (en) * 1993-01-14 1994-08-03 Stork Pompen Venting bearing lubrication ducts in pumps
US5435701A (en) * 1993-01-14 1995-07-25 Stork Pompen B.V. Pump with medium tight shell and venting means
GB2274683B (en) * 1993-01-14 1995-10-25 Stork Pompen A pump
FR2715442A1 (en) * 1994-01-26 1995-07-28 Lorraine Carbone Centrifugal pump with magnetic drive.
US5501582A (en) * 1994-01-26 1996-03-26 Le Carbone Lorraine Magnetically driven centrifugal pump
GB2332928A (en) * 1997-08-23 1999-07-07 Concentric Pumps Ltd Belt-driven pump with magnetic coupling
US8162630B2 (en) 2006-03-31 2012-04-24 H. Wernert & Co. Ohg Rotary pump with coaxial magnetic coupling
WO2007112938A3 (en) * 2006-03-31 2008-04-10 Wernert & Co Ohg H Rotary pump with coaxial magnetic coupling
JP2009531589A (en) * 2006-03-31 2009-09-03 エイチ．ベルネルト・ウント・コンパニー・オーハーゲー Rotary pump with coaxial magnetic coupling
WO2007112938A2 (en) * 2006-03-31 2007-10-11 H. Wernert & Co. Ohg Rotary pump with coaxial magnetic coupling
CN101415950B (en) * 2006-03-31 2013-02-06 H.威内特有限公司 Rotary pump with coaxial magnetic coupling
CN101956715A (en) * 2009-07-17 2011-01-26 Hmd磁力泵有限公司 The non-intrusion type steam detector that is used for magnetic drive pump
CN101956715B (en) * 2009-07-17 2013-03-13 Hmd磁力泵有限公司 Non-intrusive vapor detector for magnetic device pump
CN103133392A (en) * 2013-03-06 2013-06-05 扬州大学 Movable cavity water guide valve device of upright open type pump system
EP3299627A1 (en) * 2016-09-23 2018-03-28 Speck Pumpen Verkaufsgesellchaft GmbH Feed pump
EP3523539A4 (en) * 2016-11-01 2019-10-02 PSG Worldwide, Inc. Magnetically coupled sealless centrifugal pump
US10738782B2 (en) 2016-11-01 2020-08-11 Psg Worldwide, Inc. Magnetically coupled sealless centrifugal pump
US11396890B2 (en) 2016-11-01 2022-07-26 Psg California Llc Magnetically coupled sealless centrifugal pump
CN109779974A (en) * 2019-02-21 2019-05-21 三联泵业股份有限公司 A kind of vehicle-mounted fire water monitor water supply pump
WO2020168783A1 (en) * 2019-02-21 2020-08-27 三联泵业股份有限公司 Vehicle-mounted fire monitor water supply pump

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Publication number Publication date
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Legal Events

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)