GB834951A - Improvements in or relating to electromotor-driven centrifugal pump assemblies - Google Patents

Improvements in or relating to electromotor-driven centrifugal pump assemblies

Info

Publication number
GB834951A
GB834951A GB33607/57A GB3360757A GB834951A GB 834951 A GB834951 A GB 834951A GB 33607/57 A GB33607/57 A GB 33607/57A GB 3360757 A GB3360757 A GB 3360757A GB 834951 A GB834951 A GB 834951A
Authority
GB
United Kingdom
Prior art keywords
shell
rotor
shaft
impeller
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
GB33607/57A
Inventor
Per Helge Valentin Weberg
Bror Knut Fare
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.)
FAERE ARMATURFABRIK AB
Original Assignee
FAERE ARMATURFABRIK AB
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 FAERE ARMATURFABRIK AB filed Critical FAERE ARMATURFABRIK AB
Priority to GB33607/57A priority Critical patent/GB834951A/en
Publication of GB834951A publication Critical patent/GB834951A/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
    • 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
    • F04D13/064—Details of the magnetic circuit

Landscapes

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

Abstract

834,951. Centrifugal pumps. FARE ARMATURFABRIK A.B. Oct. 28, 1957, No. 33607/57. Class 110 (1). [Also in Groups XIX and XXXV] In a centrifugal pump driven by a shortcircuited alternating-current motor disposed laterally of the pump housing, the motor rotor and the pump impeller being connected together for rotation on a stationary shaft, and the rotor being enclosed by a cylindrical shell which is clamped against the motor stator by means of the stationary shaft and has an outwardly-directed flange which is clamped between the stator and the pump housing, the impeller has a larger external diameter than the rotor and has its largest circumference close to the flange of the shell and radially outside the cylinder of the shell. The motor rotor 12 and the pump impeller 13 are secured to a bearing- sleeve 14 which is journalled on a stationary shaft 10. The shaft 10 is secured to a statorcarrying cap 4 by a nut 20, with a cylindrical shell 16 tightly clamped between the cap and a distance-ring 18 which abuts a shoulder on the shaft. A flange 15 at the other end of the shell 16 is tightly clamped against the pump housing 1 by the cap 4, which has a threaded engagement with the housing. The impeller 13 is of greater diameter than the rotor 12 and has its largest circumference close to the flange 15, so that centrifugal force prevents solid particles entrained in the pumped liquid from entering the clearance between the shell 16 and the rotor 12 and damaging the shell and rotor and possibly jamming the rotor. To ensure that pumped liquid can rise in the shell 16 to lubricate the shaft bearing, air collecting in the shell can be vented to atmosphere by way of passages 25 in the distance-ring 18 and a passage 21 in the shaft 10, a plug 22 being removed for this purpose. The plug 22 may be replaced by a cock. To permit inspection of the impeller 13, a lens (not shown) is recessed into the wall of the housing 1, and a similar lens is provided adjacent or diametrically opposite the viewing lens to permit a light to be shone into the pump.
GB33607/57A 1957-10-28 1957-10-28 Improvements in or relating to electromotor-driven centrifugal pump assemblies Expired GB834951A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB33607/57A GB834951A (en) 1957-10-28 1957-10-28 Improvements in or relating to electromotor-driven centrifugal pump assemblies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33607/57A GB834951A (en) 1957-10-28 1957-10-28 Improvements in or relating to electromotor-driven centrifugal pump assemblies

Publications (1)

Publication Number Publication Date
GB834951A true GB834951A (en) 1960-05-11

Family

ID=10355115

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33607/57A Expired GB834951A (en) 1957-10-28 1957-10-28 Improvements in or relating to electromotor-driven centrifugal pump assemblies

Country Status (1)

Country Link
GB (1) GB834951A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201844A (en) * 1987-02-04 1988-09-07 Associated Electric Ind Limite 'Canned' rotor for electric motors used with pumps
EP0953772A1 (en) * 1998-05-02 1999-11-03 WILO GmbH Centrifugal pump with degasing screw

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201844A (en) * 1987-02-04 1988-09-07 Associated Electric Ind Limite 'Canned' rotor for electric motors used with pumps
EP0953772A1 (en) * 1998-05-02 1999-11-03 WILO GmbH Centrifugal pump with degasing screw

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