GB1241912A - Centrifugal pump - Google Patents

Centrifugal pump

Info

Publication number
GB1241912A
GB1241912A GB3968169A GB3968169A GB1241912A GB 1241912 A GB1241912 A GB 1241912A GB 3968169 A GB3968169 A GB 3968169A GB 3968169 A GB3968169 A GB 3968169A GB 1241912 A GB1241912 A GB 1241912A
Authority
GB
United Kingdom
Prior art keywords
radial
groove
space
bores
pump
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.)
Expired
Application number
GB3968169A
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.)
Bauknecht GmbH
Original Assignee
Bauknecht GmbH
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 Bauknecht GmbH filed Critical Bauknecht GmbH
Publication of GB1241912A publication Critical patent/GB1241912A/en
Expired 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2238—Special flow patterns
    • F04D29/2255—Special flow patterns flow-channels with a special cross-section contour, e.g. ejecting, throttling or diffusing effect
    • 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
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/0613—Special connection between the rotor compartments

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

1,241,912. Centrifugal pumps. G. BAUKNECHT G.m.b.H. ELEKTROTECHNISCRE FABRIKEN. Aug. 8, 1969 [Aug.21, 1968], No.39681/69. Heading F1C. [Also in Division H2] In a centrifugal pump, the impeller hub 21 or shaft 11 is formed with at least one axial groove 22 communicating with a radial bore 23 to provide a flow passage between the high-and low-pressure sides of the pump, which groove is dimensioned to allow air flow but prevent significant liquid flow therethrough. Thus, during operation, any air trapped in high pressure space 6<SP>1</SP> and, due to centrifugal effects, collecting around the shaft, is withdrawn through the groove 22, thereby reducing cavitation and consequent damage and noise. The radial bore 23 acts as a pump to withdraw liquid from the groove 22. Liquid for lubricating radial and thrust bearings 12, 13 is supplied from the space 6<SP>1</SP> through filter 18, axial bores 17' and radial grooves 26 into the space 17 within gap tube 16, and returns via radial grooves 27, bearing clearance, radial bores 24 and axial bore 25. Air trapped in the space 17 is withdrawn via the lubricanting-flow return path. The bores 24 are dimensioned to permit only a small liquid flow therethrough.
GB3968169A 1968-08-21 1969-08-08 Centrifugal pump Expired GB1241912A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681728075 DE1728075A1 (en) 1968-08-21 1968-08-21 Radial centrifugal pump without shaft feed-through

Publications (1)

Publication Number Publication Date
GB1241912A true GB1241912A (en) 1971-08-04

Family

ID=5690273

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3968169A Expired GB1241912A (en) 1968-08-21 1969-08-08 Centrifugal pump

Country Status (7)

Country Link
AT (1) AT291002B (en)
BE (1) BE737172A (en)
CH (1) CH504623A (en)
DE (1) DE1728075A1 (en)
FR (1) FR2016031A1 (en)
GB (1) GB1241912A (en)
SE (1) SE380870B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2226506A1 (en) * 2009-03-06 2010-09-08 Pompes Salmson Assembly of a filter and a ring
EP2428681A1 (en) * 2010-09-08 2012-03-14 Pompes Salmson Circulation pump
CN109083866A (en) * 2018-09-20 2018-12-25 江门市桑尼光电科技有限公司 A kind of ceiling fan

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH532201A (en) * 1970-12-11 1972-12-31 Inventio Ag Lubricating and filtering device for circulation pumps
DE2516575C3 (en) * 1975-04-16 1982-08-19 Grundfos A/S, 8850 Bjerringbro Circulation pump, in particular for heating and service water systems
DE3412774A1 (en) * 1984-04-05 1985-10-17 Webasto-Werk W. Baier GmbH & Co, 8035 Gauting Centrifugal-type circulation pump
CN112855558B (en) * 2021-01-26 2022-11-08 浙江扬子江泵业有限公司 Self-starting centrifugal water pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2226506A1 (en) * 2009-03-06 2010-09-08 Pompes Salmson Assembly of a filter and a ring
EP2428681A1 (en) * 2010-09-08 2012-03-14 Pompes Salmson Circulation pump
CN109083866A (en) * 2018-09-20 2018-12-25 江门市桑尼光电科技有限公司 A kind of ceiling fan

Also Published As

Publication number Publication date
DE1728075A1 (en) 1972-03-09
CH504623A (en) 1971-03-15
AT291002B (en) 1971-06-25
SE380870B (en) 1975-11-17
FR2016031A1 (en) 1970-04-30
BE737172A (en) 1970-01-16

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